subject:"NullPointerException"

Okay...another issue from a revision project. If you need any other information 
to make the situation clearer, let me know. I keep getting a 
NullPointerException in the following code. Keep in mind that me is an 
Address object and this block of code is contained in a method that is 
triggered to give the exception. All of my System.out.println() efforts return 
positive results:

try{
  System.out.println(editingContext.toString());
  me.editingContext().saveChanges();
} catch (Exception e){
  System.out.println(me._primaryKey);
  
System.out.println(editingContext.objectForGlobalID(me.__globalID()).valueForKey(ADDRESS1_KEY));
  System.out.println(e.getCause().toString());
}
System.out.println(ec saved for:  + 
me.getAddressForMap(true));

Printout:

r.extensions.eof.ERXEC@7a4fe91e
1010660
42 Rue Perron
java.lang.NullPointerException

at com.digitalesdesign.pup.dataobjects.Address.geocodeAddress(Address.java:100)

at 
com.digitalesdesign.pup.dataobjects.Address.provideGeocodeAddress(Address.java:120)

at 
com.digitalesdesign.pup.Application.performAddressGeocodingTemp(Application.java:176)

at com.digitalesdesign.pup.Application.init(Application.java:34)

at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)

at 
sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)

at 
sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)

at java.lang.reflect.Constructor.newInstance(Constructor.java:513)

at java.lang.Class.newInstance0(Class.java:355)

at java.lang.Class.newInstance(Class.java:308)

at com.webobjects.appserver.WOApplication.main(WOApplication.java:547)

at er.extensions.appserver.ERXApplication.main(ERXApplication.java:826)

at com.digitalesdesign.pup.Application.main(Application.java:26)


Ken Anderson
k...@watermarkstudios.com



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Re: NullPointerException

2012-04-12 Thread Chuck Hill

Which is line 100?  My first guess is that editingContext != 
me.editingContext() and further that me has been deleted or is otherwise no 
longer in an valid editing context.


On 2012-04-12, at 10:05 AM, Ken Anderson wrote:

 Okay...another issue from a revision project. If you need any other 
 information to make the situation clearer, let me know. I keep getting a 
 NullPointerException in the following code. Keep in mind that me is an 
 Address object and this block of code is contained in a method that is 
 triggered to give the exception. All of my System.out.println() efforts 
 return positive results:
 
   try{
 System.out.println(editingContext.toString());
 me.editingContext().saveChanges();
   } catch (Exception e){
 System.out.println(me._primaryKey);
 
 System.out.println(editingContext.objectForGlobalID(me.__globalID()).valueForKey(ADDRESS1_KEY));
 System.out.println(e.getCause().toString());
   }
   System.out.println(ec saved for:  + 
 me.getAddressForMap(true));
 
 Printout:
 
 r.extensions.eof.ERXEC@7a4fe91e
 1010660
 42 Rue Perron
 java.lang.NullPointerException
   
 at 
 com.digitalesdesign.pup.dataobjects.Address.geocodeAddress(Address.java:100)
   
 at 
 com.digitalesdesign.pup.dataobjects.Address.provideGeocodeAddress(Address.java:120)
   
 at 
 com.digitalesdesign.pup.Application.performAddressGeocodingTemp(Application.java:176)
   
 at com.digitalesdesign.pup.Application.init(Application.java:34)
   
 at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
   
 at 
 sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
   
 at 
 sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
   
 at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
   
 at java.lang.Class.newInstance0(Class.java:355)
   
 at java.lang.Class.newInstance(Class.java:308)
   
 at com.webobjects.appserver.WOApplication.main(WOApplication.java:547)
   
 at er.extensions.appserver.ERXApplication.main(ERXApplication.java:826)
   
 at com.digitalesdesign.pup.Application.main(Application.java:26)
 
 
 Ken Anderson
 k...@watermarkstudios.com
 
 
 
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 This email sent to ch...@global-village.net

-- 
Chuck Hill Senior Consultant / VP Development

Practical WebObjects - for developers who want to increase their overall 
knowledge of WebObjects or who are trying to solve specific problems.
http://www.global-village.net/gvc/practical_webobjects










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Re: NullPointerException

The editing context is passed in as a parameter and checked between lines 68-73.

This is line 68-73:

68  Address me = this;
69
70  if (editingContext() != editingContext) {
71System.out.println(ec not matched);
72  me = this.localInstanceIn(editingContext);
73  }

And this is line 94-101:

94  try{
95System.out.println(editingContext.toString());
96me.editingContext().saveChanges();
97  } catch (Exception e){
98System.out.println(me._primaryKey);
99
System.out.println(editingContext.objectForGlobalID(me.__globalID()).valueForKey(ADDRESS1_KEY));
100   System.out.println(e.getCause().toString());
101 }

Ken Anderson
k...@watermarkstudios.com



On Apr 12, 2012, at 10:14 AM, Chuck Hill wrote:

 Which is line 100?  My first guess is that editingContext != 
 me.editingContext() and further that me has been deleted or is otherwise no 
 longer in an valid editing context.
 
 
 On 2012-04-12, at 10:05 AM, Ken Anderson wrote:
 
 Okay...another issue from a revision project. If you need any other 
 information to make the situation clearer, let me know. I keep getting a 
 NullPointerException in the following code. Keep in mind that me is an 
 Address object and this block of code is contained in a method that is 
 triggered to give the exception. All of my System.out.println() efforts 
 return positive results:
 
  try{
System.out.println(editingContext.toString());
me.editingContext().saveChanges();
  } catch (Exception e){
System.out.println(me._primaryKey);

 System.out.println(editingContext.objectForGlobalID(me.__globalID()).valueForKey(ADDRESS1_KEY));
System.out.println(e.getCause().toString());
  }
  System.out.println(ec saved for:  + 
 me.getAddressForMap(true));
 
 Printout:
 
 r.extensions.eof.ERXEC@7a4fe91e
 1010660
 42 Rue Perron
 java.lang.NullPointerException
  
 at 
 com.digitalesdesign.pup.dataobjects.Address.geocodeAddress(Address.java:100)
  
 at 
 com.digitalesdesign.pup.dataobjects.Address.provideGeocodeAddress(Address.java:120)
  
 at 
 com.digitalesdesign.pup.Application.performAddressGeocodingTemp(Application.java:176)
  
 at com.digitalesdesign.pup.Application.init(Application.java:34)
  
 at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
  
 at 
 sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
  
 at 
 sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
  
 at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
  
 at java.lang.Class.newInstance0(Class.java:355)
  
 at java.lang.Class.newInstance(Class.java:308)
  
 at com.webobjects.appserver.WOApplication.main(WOApplication.java:547)
  
 at er.extensions.appserver.ERXApplication.main(ERXApplication.java:826)
  
 at com.digitalesdesign.pup.Application.main(Application.java:26)
 
 
 Ken Anderson
 k...@watermarkstudios.com
 
 
 
 ___
 Do not post admin requests to the list. They will be ignored.
 Webobjects-dev mailing list  (Webobjects-dev@lists.apple.com)
 Help/Unsubscribe/Update your Subscription:
 https://lists.apple.com/mailman/options/webobjects-dev/chill%40global-village.net
 
 This email sent to ch...@global-village.net
 
 -- 
 Chuck Hill Senior Consultant / VP Development
 
 Practical WebObjects - for developers who want to increase their overall 
 knowledge of WebObjects or who are trying to solve specific problems.
 http://www.global-village.net/gvc/practical_webobjects
 
 
 
 
 
 
 
 

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Re: NullPointerException

2012-04-12 Thread Chuck Hill


On 2012-04-12, at 10:25 AM, Ken Anderson wrote:

 The editing context is passed in as a parameter and checked between lines 
 68-73.
 
 This is line 68-73:
 
   68  Address me = this;
   69
   70  if (editingContext() != editingContext) {
   71System.out.println(ec not matched);
   72  me = this.localInstanceIn(editingContext);

That seems confusing.  You are using editingContext, editingContext(), and 
me.editingContext().


   73  }
 
 And this is line 94-101:
 
   94  try{
   95System.out.println(editingContext.toString());
   96me.editingContext().saveChanges();
   97  } catch (Exception e){
   98System.out.println(me._primaryKey);
   99
 System.out.println(editingContext.objectForGlobalID(me.__globalID()).valueForKey(ADDRESS1_KEY));
   100   System.out.println(e.getCause().toString());

So if the exception is happening on line 100, then e.getCause() is null, no?  
Try e.printStackTrace();


Chuck

   101 }
 
 Ken Anderson
 k...@watermarkstudios.com
 
 
 
 On Apr 12, 2012, at 10:14 AM, Chuck Hill wrote:
 
 Which is line 100?  My first guess is that editingContext != 
 me.editingContext() and further that me has been deleted or is otherwise no 
 longer in an valid editing context.
 
 
 On 2012-04-12, at 10:05 AM, Ken Anderson wrote:
 
 Okay...another issue from a revision project. If you need any other 
 information to make the situation clearer, let me know. I keep getting a 
 NullPointerException in the following code. Keep in mind that me is an 
 Address object and this block of code is contained in a method that is 
 triggered to give the exception. All of my System.out.println() efforts 
 return positive results:
 
 try{
   System.out.println(editingContext.toString());
   me.editingContext().saveChanges();
 } catch (Exception e){
   System.out.println(me._primaryKey);
   
 System.out.println(editingContext.objectForGlobalID(me.__globalID()).valueForKey(ADDRESS1_KEY));
   System.out.println(e.getCause().toString());
 }
 System.out.println(ec saved for:  + 
 me.getAddressForMap(true));
 
 Printout:
 
 r.extensions.eof.ERXEC@7a4fe91e
 1010660
 42 Rue Perron
 java.lang.NullPointerException
 
 at 
 com.digitalesdesign.pup.dataobjects.Address.geocodeAddress(Address.java:100)
 
 at 
 com.digitalesdesign.pup.dataobjects.Address.provideGeocodeAddress(Address.java:120)
 
 at 
 com.digitalesdesign.pup.Application.performAddressGeocodingTemp(Application.java:176)
 
 at com.digitalesdesign.pup.Application.init(Application.java:34)
 
 at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
 
 at 
 sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
 
 at 
 sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
 
 at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
 
 at java.lang.Class.newInstance0(Class.java:355)
 
 at java.lang.Class.newInstance(Class.java:308)
 
 at com.webobjects.appserver.WOApplication.main(WOApplication.java:547)
 
 at er.extensions.appserver.ERXApplication.main(ERXApplication.java:826)
 
 at com.digitalesdesign.pup.Application.main(Application.java:26)
 
 
 Ken Anderson
 k...@watermarkstudios.com
 
 
 
 ___
 Do not post admin requests to the list. They will be ignored.
 Webobjects-dev mailing list  (Webobjects-dev@lists.apple.com)
 Help/Unsubscribe/Update your Subscription:
 https://lists.apple.com/mailman/options/webobjects-dev/chill%40global-village.net
 
 This email sent to ch...@global-village.net
 
 -- 
 Chuck Hill Senior Consultant / VP Development
 
 Practical WebObjects - for developers who want to increase their overall 
 knowledge of WebObjects or who are trying to solve specific problems.
 http://www.global-village.net/gvc/practical_webobjects
 
 
 
 
 
 
 
 
 

-- 
Chuck Hill Senior Consultant / VP Development

Practical WebObjects - for developers who want to increase their overall 
knowledge of WebObjects or who are trying to solve specific problems.
http://www.global-village.net/gvc/practical_webobjects










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Re: NullPointerException

This is not my code. I'm still figuring it out myself, but the ec's all match 
up by id. I did the printstacktrace:

java.lang.NullPointerException
at com.digitalesdesign.pup.util.WorkerQueue.addTask(WorkerQueue.java:53)
at 
com.digitalesdesign.pup.dataobjects.Address.willUpdate(Address.java:160)
at 
er.extensions.eof.ERXEnterpriseObject$4.perform(ERXEnterpriseObject.java:196)
at 
er.extensions.eof.ERXEnterpriseObject$Processor.perform(ERXEnterpriseObject.java:163)
at 
er.extensions.eof.ERXEnterpriseObject$Observer.editingContextWillSaveChanges(ERXEnterpriseObject.java:74)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at 
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at 
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at 
com.webobjects.foundation.NSSelector._safeInvokeMethod(NSSelector.java:122)
at 
com.webobjects.foundation.NSNotificationCenter$_Entry.invokeMethod(NSNotificationCenter.java:588)
at 
com.webobjects.foundation.NSNotificationCenter.postNotification(NSNotificationCenter.java:532)
at 
com.webobjects.foundation.NSNotificationCenter.postNotification(NSNotificationCenter.java:546)
at er.extensions.eof.ERXEC.saveChanges(ERXEC.java:1014)
at 
com.digitalesdesign.pup.dataobjects.Address.geocodeAddress(Address.java:96)
at 
com.digitalesdesign.pup.dataobjects.Address.provideGeocodeAddress(Address.java:122)
at 
com.digitalesdesign.pup.Application.performAddressGeocodingTemp(Application.java:176)
at com.digitalesdesign.pup.Application.init(Application.java:34)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at 
sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
at 
sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
at java.lang.Class.newInstance0(Class.java:355)
at java.lang.Class.newInstance(Class.java:308)
at com.webobjects.appserver.WOApplication.main(WOApplication.java:547)
at er.extensions.appserver.ERXApplication.main(ERXApplication.java:826)
at com.digitalesdesign.pup.Application.main(Application.java:26)

Ken Anderson
k...@watermarkstudios.com



On Apr 12, 2012, at 10:37 AM, Chuck Hill wrote:

 
 On 2012-04-12, at 10:25 AM, Ken Anderson wrote:
 
 The editing context is passed in as a parameter and checked between lines 
 68-73.
 
 This is line 68-73:
 
  68  Address me = this;
  69
  70  if (editingContext() != editingContext) {
  71System.out.println(ec not matched);
  72  me = this.localInstanceIn(editingContext);
 
 That seems confusing.  You are using editingContext, editingContext(), and 
 me.editingContext().
 
 
  73  }
 
 And this is line 94-101:
 
  94  try{
  95System.out.println(editingContext.toString());
  96me.editingContext().saveChanges();
  97  } catch (Exception e){
  98System.out.println(me._primaryKey);
  99
 System.out.println(editingContext.objectForGlobalID(me.__globalID()).valueForKey(ADDRESS1_KEY));
  100   System.out.println(e.getCause().toString());
 
 So if the exception is happening on line 100, then e.getCause() is null, no?  
 Try e.printStackTrace();
 
 
 Chuck
 
  101 }
 
 Ken Anderson
 k...@watermarkstudios.com
 
 
 
 On Apr 12, 2012, at 10:14 AM, Chuck Hill wrote:
 
 Which is line 100?  My first guess is that editingContext != 
 me.editingContext() and further that me has been deleted or is otherwise no 
 longer in an valid editing context.
 
 
 On 2012-04-12, at 10:05 AM, Ken Anderson wrote:
 
 Okay...another issue from a revision project. If you need any other 
 information to make the situation clearer, let me know. I keep getting a 
 NullPointerException in the following code. Keep in mind that me is an 
 Address object and this block of code is contained in a method that is 
 triggered to give the exception. All of my System.out.println() efforts 
 return positive results:
 
try{
  System.out.println(editingContext.toString());
  me.editingContext().saveChanges();
} catch (Exception e){
  System.out.println(me._primaryKey);
  
 System.out.println(editingContext.objectForGlobalID(me.__globalID()).valueForKey(ADDRESS1_KEY));
  System.out.println(e.getCause().toString());
}
System.out.println(ec saved for:  + 
 me.getAddressForMap(true));
 
 Printout:
 
 r.extensions.eof.ERXEC@7a4fe91e
 1010660
 42 Rue Perron
 java.lang.NullPointerException

Re: NullPointerException

2012-04-12 Thread Chuck Hill

Keep following the trace, what is on
at com.digitalesdesign.pup.util.WorkerQueue.addTask(WorkerQueue.java:53)

And what is calling that on
   at 
 com.digitalesdesign.pup.dataobjects.Address.willUpdate(Address.java:160)


Chuck

On 2012-04-12, at 10:43 AM, Ken Anderson wrote:

 This is not my code. I'm still figuring it out myself, but the ec's all match 
 up by id. I did the printstacktrace:
 
 java.lang.NullPointerException
   at com.digitalesdesign.pup.util.WorkerQueue.addTask(WorkerQueue.java:53)
   at 
 com.digitalesdesign.pup.dataobjects.Address.willUpdate(Address.java:160)
   at 
 er.extensions.eof.ERXEnterpriseObject$4.perform(ERXEnterpriseObject.java:196)
   at 
 er.extensions.eof.ERXEnterpriseObject$Processor.perform(ERXEnterpriseObject.java:163)
   at 
 er.extensions.eof.ERXEnterpriseObject$Observer.editingContextWillSaveChanges(ERXEnterpriseObject.java:74)
   at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
   at 
 sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
   at 
 sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
   at java.lang.reflect.Method.invoke(Method.java:597)
   at 
 com.webobjects.foundation.NSSelector._safeInvokeMethod(NSSelector.java:122)
   at 
 com.webobjects.foundation.NSNotificationCenter$_Entry.invokeMethod(NSNotificationCenter.java:588)
   at 
 com.webobjects.foundation.NSNotificationCenter.postNotification(NSNotificationCenter.java:532)
   at 
 com.webobjects.foundation.NSNotificationCenter.postNotification(NSNotificationCenter.java:546)
   at er.extensions.eof.ERXEC.saveChanges(ERXEC.java:1014)
   at 
 com.digitalesdesign.pup.dataobjects.Address.geocodeAddress(Address.java:96)
   at 
 com.digitalesdesign.pup.dataobjects.Address.provideGeocodeAddress(Address.java:122)
   at 
 com.digitalesdesign.pup.Application.performAddressGeocodingTemp(Application.java:176)
   at com.digitalesdesign.pup.Application.init(Application.java:34)
   at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
   at 
 sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
   at 
 sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
   at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
   at java.lang.Class.newInstance0(Class.java:355)
   at java.lang.Class.newInstance(Class.java:308)
   at com.webobjects.appserver.WOApplication.main(WOApplication.java:547)
   at er.extensions.appserver.ERXApplication.main(ERXApplication.java:826)
   at com.digitalesdesign.pup.Application.main(Application.java:26)
 
 Ken Anderson
 k...@watermarkstudios.com
 
 
 
 On Apr 12, 2012, at 10:37 AM, Chuck Hill wrote:
 
 
 On 2012-04-12, at 10:25 AM, Ken Anderson wrote:
 
 The editing context is passed in as a parameter and checked between lines 
 68-73.
 
 This is line 68-73:
 
 68  Address me = this;
 69
 70  if (editingContext() != editingContext) {
 71System.out.println(ec not matched);
 72  me = this.localInstanceIn(editingContext);
 
 That seems confusing.  You are using editingContext, editingContext(), and 
 me.editingContext().
 
 
 73  }
 
 And this is line 94-101:
 
 94  try{
 95System.out.println(editingContext.toString());
 96me.editingContext().saveChanges();
 97  } catch (Exception e){
 98System.out.println(me._primaryKey);
 99
 System.out.println(editingContext.objectForGlobalID(me.__globalID()).valueForKey(ADDRESS1_KEY));
 100   System.out.println(e.getCause().toString());
 
 So if the exception is happening on line 100, then e.getCause() is null, no? 
  Try e.printStackTrace();
 
 
 Chuck
 
 101 }
 
 Ken Anderson
 k...@watermarkstudios.com
 
 
 
 On Apr 12, 2012, at 10:14 AM, Chuck Hill wrote:
 
 Which is line 100?  My first guess is that editingContext != 
 me.editingContext() and further that me has been deleted or is otherwise 
 no longer in an valid editing context.
 
 
 On 2012-04-12, at 10:05 AM, Ken Anderson wrote:
 
 Okay...another issue from a revision project. If you need any other 
 information to make the situation clearer, let me know. I keep getting a 
 NullPointerException in the following code. Keep in mind that me is an 
 Address object and this block of code is contained in a method that is 
 triggered to give the exception. All of my System.out.println() efforts 
 return positive results:
 
   try{
 System.out.println(editingContext.toString());
 me.editingContext().saveChanges();
   } catch (Exception e){
 System.out.println(me._primaryKey);
 
 System.out.println(editingContext.objectForGlobalID(me.__globalID()).valueForKey(ADDRESS1_KEY));
 System.out.println

Re: NullPointerException

Yep! It was a concurrency issue in the utility. All I needed to do was add that 
PrintStackTrace to the catch block to point me in the right direction.

Thanks as always!

Ken Anderson
k...@watermarkstudios.com



On Apr 12, 2012, at 10:46 AM, Chuck Hill wrote:

 Keep following the trace, what is on
   at com.digitalesdesign.pup.util.WorkerQueue.addTask(WorkerQueue.java:53)
 
 And what is calling that on
  at 
 com.digitalesdesign.pup.dataobjects.Address.willUpdate(Address.java:160)
 
 
 Chuck
 
 On 2012-04-12, at 10:43 AM, Ken Anderson wrote:
 
 This is not my code. I'm still figuring it out myself, but the ec's all 
 match up by id. I did the printstacktrace:
 
 java.lang.NullPointerException
  at com.digitalesdesign.pup.util.WorkerQueue.addTask(WorkerQueue.java:53)
  at 
 com.digitalesdesign.pup.dataobjects.Address.willUpdate(Address.java:160)
  at 
 er.extensions.eof.ERXEnterpriseObject$4.perform(ERXEnterpriseObject.java:196)
  at 
 er.extensions.eof.ERXEnterpriseObject$Processor.perform(ERXEnterpriseObject.java:163)
  at 
 er.extensions.eof.ERXEnterpriseObject$Observer.editingContextWillSaveChanges(ERXEnterpriseObject.java:74)
  at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
  at 
 sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
  at 
 sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
  at java.lang.reflect.Method.invoke(Method.java:597)
  at 
 com.webobjects.foundation.NSSelector._safeInvokeMethod(NSSelector.java:122)
  at 
 com.webobjects.foundation.NSNotificationCenter$_Entry.invokeMethod(NSNotificationCenter.java:588)
  at 
 com.webobjects.foundation.NSNotificationCenter.postNotification(NSNotificationCenter.java:532)
  at 
 com.webobjects.foundation.NSNotificationCenter.postNotification(NSNotificationCenter.java:546)
  at er.extensions.eof.ERXEC.saveChanges(ERXEC.java:1014)
  at 
 com.digitalesdesign.pup.dataobjects.Address.geocodeAddress(Address.java:96)
  at 
 com.digitalesdesign.pup.dataobjects.Address.provideGeocodeAddress(Address.java:122)
  at 
 com.digitalesdesign.pup.Application.performAddressGeocodingTemp(Application.java:176)
  at com.digitalesdesign.pup.Application.init(Application.java:34)
  at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
  at 
 sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
  at 
 sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
  at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
  at java.lang.Class.newInstance0(Class.java:355)
  at java.lang.Class.newInstance(Class.java:308)
  at com.webobjects.appserver.WOApplication.main(WOApplication.java:547)
  at er.extensions.appserver.ERXApplication.main(ERXApplication.java:826)
  at com.digitalesdesign.pup.Application.main(Application.java:26)
 
 Ken Anderson
 k...@watermarkstudios.com
 
 
 
 On Apr 12, 2012, at 10:37 AM, Chuck Hill wrote:
 
 
 On 2012-04-12, at 10:25 AM, Ken Anderson wrote:
 
 The editing context is passed in as a parameter and checked between lines 
 68-73.
 
 This is line 68-73:
 
68  Address me = this;
69
70  if (editingContext() != editingContext) {
71System.out.println(ec not matched);
72  me = this.localInstanceIn(editingContext);
 
 That seems confusing.  You are using editingContext, editingContext(), and 
 me.editingContext().
 
 
73  }
 
 And this is line 94-101:
 
94  try{
95System.out.println(editingContext.toString());
96me.editingContext().saveChanges();
97  } catch (Exception e){
98System.out.println(me._primaryKey);
99
 System.out.println(editingContext.objectForGlobalID(me.__globalID()).valueForKey(ADDRESS1_KEY));
100   System.out.println(e.getCause().toString());
 
 So if the exception is happening on line 100, then e.getCause() is null, 
 no?  Try e.printStackTrace();
 
 
 Chuck
 
101 }
 
 Ken Anderson
 k...@watermarkstudios.com
 
 
 
 On Apr 12, 2012, at 10:14 AM, Chuck Hill wrote:
 
 Which is line 100?  My first guess is that editingContext != 
 me.editingContext() and further that me has been deleted or is otherwise 
 no longer in an valid editing context.
 
 
 On 2012-04-12, at 10:05 AM, Ken Anderson wrote:
 
 Okay...another issue from a revision project. If you need any other 
 information to make the situation clearer, let me know. I keep getting a 
 NullPointerException in the following code. Keep in mind that me is an 
 Address object and this block of code is contained in a method that is 
 triggered to give the exception. All of my System.out.println() efforts 
 return positive results:
 
  try{
System.out.println(editingContext.toString());
me.editingContext().saveChanges

Re: NullPointerException

2012-04-12 Thread Farrukh Ijaz

Hi Ken,

Also we should not call toString() method on e.getCause() because it's not 
always necessary you get a cause if the exception is already at it's origin. 
Here is a sample code to test this:

Farrukh

public class ExceptionTest {

public static void printCause(Throwable t) {
System.err.println(t.toString());
printCause(t.getCause());
}

public static void main(String[] args) {
try {
throw new Exception(Testing);
} catch(Exception e) {
printCause(e);
}
}
}

Farrukhs-MacBook-Pro:TopCoder fijaz$ java ExceptionTest
java.lang.Exception: Testing
Exception in thread main java.lang.NullPointerException
at ExceptionTest.printCause(ExceptionTest.java:4)
at ExceptionTest.printCause(ExceptionTest.java:5)
at ExceptionTest.main(ExceptionTest.java:12)


On 2012-04-12, at 9:08 PM, Ken Anderson wrote:

 94try{
   95System.out.println(editingContext.toString());
   96me.editingContext().saveChanges();
   97  } catch (Exception e){
   98System.out.println(me._primaryKey);
   99
 System.out.println(editingContext.objectForGlobalID(me.__globalID()).valueForKey(ADDRESS1_KEY));
   100   System.out.println(e.getCause().toString());

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NullPointerException

2011-12-04 Thread Kevin Spake

Still working on the WebObjects, WOlips and Wonder tutorial, part 2...

Getting a null pointer exception. I've spent hours trying to figure out the 
issue, but I just don't have the experience to properly trouble shoot it. The 
stack trace is below, and below that is the code for my DirectAction.  The 
console says the error occurs on line 55, which is if (errorMessage != null || 
errorMessage.length() != 0) { 

The thing is, errorMessage is null at this point. I've entered in valid user 
credentials, the session object has been created. The currentUser and nextPage 
objects are not null.  nextPage is set to AdminPage.   As soon as I try to 
step into the if (errorMessage != null || errorMessage.length() != 0) {
line the exception occurs.  Is this a scope issue? 

Thanks.


Application: SooperSeekrit Error: java.lang.NullPointerException Reason: Stack 
trace:
FileLine#   Method  Package
DirectAction.java   55  loginAction com.sooperseekrit.app
NativeMethodAccessorImpl.java   NA  invoke0 sun.reflect
NativeMethodAccessorImpl.java   39  invoke  sun.reflect
DelegatingMethodAccessorImpl.java   25  invoke  sun.reflect
Method.java 597 invoke  java.lang.reflect
WODirectAction.java 144 performActionNamed  com.webobjects.appserver
ERXDirectAction.java401 performActionNamed  er.extensions.appserver
WOActionRequestHandler.java 259 _handleRequest  
com.webobjects.appserver._private
WOActionRequestHandler.java 158 handleRequest   
com.webobjects.appserver._private
ERXDirectActionRequestHandler.java  126 handleRequest   
er.extensions.appserver
WOApplication.java  1687dispatchRequest com.webobjects.appserver
ERXApplication.java 2021dispatchRequestImmediately  
er.extensions.appserver
ERXApplication.java 1986dispatchRequest er.extensions.appserver
WOWorkerThread.java 144 runOnce com.webobjects.appserver._private
WOWorkerThread.java 226 run com.webobjects.appserver._private
Thread.java 680 run java.lang





package com.sooperseekrit.app;

import java.util.NoSuchElementException;

import com.webobjects.appserver.WOActionResults;
import com.webobjects.appserver.WOComponent;
import com.webobjects.appserver.WORequest;
import com.webobjects.eocontrol.EOQualifier;

import er.extensions.appserver.ERXDirectAction;
import er.extensions.eof.ERXEC;

import com.sooperseekrit.components.AdminPage;
import com.sooperseekrit.components.Main;
import com.sooperseekrit.components.UserPage;
import com.sooperseekrit.model.User;

public class DirectAction extends ERXDirectAction {
public DirectAction(WORequest request) {
super(request);
}


@Override
public WOActionResults defaultAction() {
return pageWithName(Main.class.getName());
}

public WOActionResults loginAction() {

WOComponent nextPage = null;
String username = request().stringFormValueForKey(username);
String password = request().stringFormValueForKey(password);
String errorMessage = null;
if (username == null || username.length() == 0 || 
password == null || password.length() == 0) {
errorMessage = Please enter a username and password;
}   else {
try {
EOQualifier qual = 
User.USERNAME.eq(username).and(User.PASSWORD.eq(password));
User user = 
User.fetchRequiredUser(ERXEC.newEditingContext(), qual);
((Session)session()).set_currentUser(user);
if (user.group().name().equals(Admin)) {
nextPage = 
pageWithName(AdminPage.class.getName());
} else if (user.group().name().equals(User)) {
nextPage = 
pageWithName(UserPage.class.getName());
}
} catch (NoSuchElementException e) {
errorMessage = No user found for those 
credentials;
} catch (Exception e) {
// something bad happened
}
}

if (errorMessage != null || errorMessage.length() != 0) {
nextPage = pageWithName(Main.class.getName());
nextPage.takeValueForKey(errorMessage, errorMessage);
nextPage.takeValueForKey(username, username);
nextPage.takeValueForKey(password, password);
}

return nextPage;
}
}

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Re: NullPointerException

2011-12-04 Thread Philippe Rabier

Hi Kevin

You have to use a  operator when you test if your string is not null and 
length  0. ;-)

Bad copy/paste I guess. 

Your code is clean.  

Philippe

Sent from my iPhone

On 4 déc. 2011, at 09:01, Kevin Spake sparky0...@yahoo.com wrote:

 Still working on the WebObjects, WOlips and Wonder tutorial, part 2...
 
 Getting a null pointer exception. I've spent hours trying to figure out the 
 issue, but I just don't have the experience to properly trouble shoot it. The 
 stack trace is below, and below that is the code for my DirectAction.  The 
 console says the error occurs on line 55, which is if (errorMessage != null 
 || errorMessage.length() != 0) { 
 
 The thing is, errorMessage is null at this point. I've entered in valid user 
 credentials, the session object has been created. The currentUser and 
 nextPage objects are not null.  nextPage is set to AdminPage.   As soon as 
 I try to step into the if (errorMessage != null || errorMessage.length() != 
 0) {line the exception occurs.  Is this a scope issue? 
 
 Thanks.
 
 
 Application: SooperSeekrit Error: java.lang.NullPointerException Reason: 
 Stack trace:
 File  Line#   Method  Package
 DirectAction.java 55  loginAction com.sooperseekrit.app
 NativeMethodAccessorImpl.java NA  invoke0 sun.reflect
 NativeMethodAccessorImpl.java 39  invoke  sun.reflect
 DelegatingMethodAccessorImpl.java 25  invoke  sun.reflect
 Method.java   597 invoke  java.lang.reflect
 WODirectAction.java   144 performActionNamed  com.webobjects.appserver
 ERXDirectAction.java  401 performActionNamed  er.extensions.appserver
 WOActionRequestHandler.java   259 _handleRequest  
 com.webobjects.appserver._private
 WOActionRequestHandler.java   158 handleRequest   
 com.webobjects.appserver._private
 ERXDirectActionRequestHandler.java126 handleRequest   
 er.extensions.appserver
 WOApplication.java1687dispatchRequest com.webobjects.appserver
 ERXApplication.java   2021dispatchRequestImmediately  
 er.extensions.appserver
 ERXApplication.java   1986dispatchRequest er.extensions.appserver
 WOWorkerThread.java   144 runOnce com.webobjects.appserver._private
 WOWorkerThread.java   226 run com.webobjects.appserver._private
 Thread.java   680 run java.lang
 
 
 
 
 
 package com.sooperseekrit.app;
 
 import java.util.NoSuchElementException;
 
 import com.webobjects.appserver.WOActionResults;
 import com.webobjects.appserver.WOComponent;
 import com.webobjects.appserver.WORequest;
 import com.webobjects.eocontrol.EOQualifier;
 
 import er.extensions.appserver.ERXDirectAction;
 import er.extensions.eof.ERXEC;
 
 import com.sooperseekrit.components.AdminPage;
 import com.sooperseekrit.components.Main;
 import com.sooperseekrit.components.UserPage;
 import com.sooperseekrit.model.User;
 
 public class DirectAction extends ERXDirectAction {
   public DirectAction(WORequest request) {
   super(request);
   }
   
   
   @Override
   public WOActionResults defaultAction() {
   return pageWithName(Main.class.getName());
   }
   
   public WOActionResults loginAction() {
   
   WOComponent nextPage = null;
   String username = request().stringFormValueForKey(username);
   String password = request().stringFormValueForKey(password);
   String errorMessage = null;
   if (username == null || username.length() == 0 || 
   password == null || password.length() == 0) {
   errorMessage = Please enter a username and password;
   }   else {
   try {
   EOQualifier qual = 
 User.USERNAME.eq(username).and(User.PASSWORD.eq(password));
   User user = 
 User.fetchRequiredUser(ERXEC.newEditingContext(), qual);
   ((Session)session()).set_currentUser(user);
   if (user.group().name().equals(Admin)) {
   nextPage = 
 pageWithName(AdminPage.class.getName());
   } else if (user.group().name().equals(User)) {
   nextPage = 
 pageWithName(UserPage.class.getName());
   }
   } catch (NoSuchElementException e) {
   errorMessage = No user found for those 
 credentials;
   } catch (Exception e) {
   // something bad happened
   }
   }
   
   if (errorMessage != null || errorMessage.length() != 0) {
   nextPage = pageWithName(Main.class.getName());
   nextPage.takeValueForKey(errorMessage, errorMessage);
   nextPage.takeValueForKey(username, username);
   nextPage.takeValueForKey(password, password);

Re: NullPointerException

2011-12-04 Thread Paul D Yu

Kevin

This is a java or may be even programming issue, NOT a WebObjects one.

Because of the || or operator, the runtime has to evaluate the second portion 
of the condition.  Since errorMessage is null, length() of errorMessage will 
throw the exception...

Paul

Sent from my iPad

On Dec 4, 2011, at 3:22 AM, Philippe Rabier prab...@me.com wrote:

 Hi Kevin
 
 You have to use a  operator when you test if your string is not null and 
 length  0. ;-)
 
 Bad copy/paste I guess. 
 
 Your code is clean.  
 
 Philippe
 
 Sent from my iPhone
 
 On 4 déc. 2011, at 09:01, Kevin Spake sparky0...@yahoo.com wrote:
 
 Still working on the WebObjects, WOlips and Wonder tutorial, part 2...
 
 Getting a null pointer exception. I've spent hours trying to figure out the 
 issue, but I just don't have the experience to properly trouble shoot it. 
 The stack trace is below, and below that is the code for my DirectAction.  
 The console says the error occurs on line 55, which is if (errorMessage != 
 null || errorMessage.length() != 0) { 
 
 The thing is, errorMessage is null at this point. I've entered in valid user 
 credentials, the session object has been created. The currentUser and 
 nextPage objects are not null.  nextPage is set to AdminPage.   As soon as 
 I try to step into the if (errorMessage != null || errorMessage.length() != 
 0) {line the exception occurs.  Is this a scope issue? 
 
 Thanks.
 
 
 Application: SooperSeekrit Error: java.lang.NullPointerException Reason: 
 Stack trace:
 File Line#   Method  Package
 DirectAction.java55  loginAction com.sooperseekrit.app
 NativeMethodAccessorImpl.javaNA  invoke0 sun.reflect
 NativeMethodAccessorImpl.java39  invoke  sun.reflect
 DelegatingMethodAccessorImpl.java25  invoke  sun.reflect
 Method.java  597 invoke  java.lang.reflect
 WODirectAction.java  144 performActionNamed  com.webobjects.appserver
 ERXDirectAction.java 401 performActionNamed  er.extensions.appserver
 WOActionRequestHandler.java  259 _handleRequest  
 com.webobjects.appserver._private
 WOActionRequestHandler.java  158 handleRequest   
 com.webobjects.appserver._private
 ERXDirectActionRequestHandler.java   126 handleRequest   
 er.extensions.appserver
 WOApplication.java   1687dispatchRequest com.webobjects.appserver
 ERXApplication.java  2021dispatchRequestImmediately  
 er.extensions.appserver
 ERXApplication.java  1986dispatchRequest er.extensions.appserver
 WOWorkerThread.java  144 runOnce com.webobjects.appserver._private
 WOWorkerThread.java  226 run com.webobjects.appserver._private
 Thread.java  680 run java.lang
 
 
 
 
 
 package com.sooperseekrit.app;
 
 import java.util.NoSuchElementException;
 
 import com.webobjects.appserver.WOActionResults;
 import com.webobjects.appserver.WOComponent;
 import com.webobjects.appserver.WORequest;
 import com.webobjects.eocontrol.EOQualifier;
 
 import er.extensions.appserver.ERXDirectAction;
 import er.extensions.eof.ERXEC;
 
 import com.sooperseekrit.components.AdminPage;
 import com.sooperseekrit.components.Main;
 import com.sooperseekrit.components.UserPage;
 import com.sooperseekrit.model.User;
 
 public class DirectAction extends ERXDirectAction {
  public DirectAction(WORequest request) {
  super(request);
  }
  
  
  @Override
  public WOActionResults defaultAction() {
  return pageWithName(Main.class.getName());
  }
  
  public WOActionResults loginAction() {
  
  WOComponent nextPage = null;
  String username = request().stringFormValueForKey(username);
  String password = request().stringFormValueForKey(password);
  String errorMessage = null;
  if (username == null || username.length() == 0 || 
  password == null || password.length() == 0) {
  errorMessage = Please enter a username and password;
  }   else {
  try {
  EOQualifier qual = 
 User.USERNAME.eq(username).and(User.PASSWORD.eq(password));
  User user = 
 User.fetchRequiredUser(ERXEC.newEditingContext(), qual);
  ((Session)session()).set_currentUser(user);
  if (user.group().name().equals(Admin)) {
  nextPage = 
 pageWithName(AdminPage.class.getName());
  } else if (user.group().name().equals(User)) {
  nextPage = 
 pageWithName(UserPage.class.getName());
  }
  } catch (NoSuchElementException e) {
  errorMessage = No user found for those 
 credentials;
  } catch (Exception e) {
  // something bad happened
  }
  }
  
  if

Re: NullPointerException

2011-12-04 Thread Kevin Spake

I was pretty sure it was something I was doing. Yes, I just did a copy and 
paste. 

Thanks again. 

Sent from my iPhone

On Dec 4, 2011, at 2:48 AM, Paul D Yu p...@mac.com wrote:

 Kevin
 
 This is a java or may be even programming issue, NOT a WebObjects one.
 
 Because of the || or operator, the runtime has to evaluate the second portion 
 of the condition.  Since errorMessage is null, length() of errorMessage will 
 throw the exception...
 
 Paul
 
 Sent from my iPad
 
 On Dec 4, 2011, at 3:22 AM, Philippe Rabier prab...@me.com wrote:
 
 Hi Kevin
 
 You have to use a  operator when you test if your string is not null and 
 length  0. ;-)
 
 Bad copy/paste I guess. 
 
 Your code is clean.  
 
 Philippe
 
 Sent from my iPhone
 
 On 4 déc. 2011, at 09:01, Kevin Spake sparky0...@yahoo.com wrote:
 
 Still working on the WebObjects, WOlips and Wonder tutorial, part 2...
 
 Getting a null pointer exception. I've spent hours trying to figure out the 
 issue, but I just don't have the experience to properly trouble shoot it. 
 The stack trace is below, and below that is the code for my DirectAction.  
 The console says the error occurs on line 55, which is if (errorMessage != 
 null || errorMessage.length() != 0) { 
 
 The thing is, errorMessage is null at this point. I've entered in valid 
 user credentials, the session object has been created. The currentUser and 
 nextPage objects are not null.  nextPage is set to AdminPage.   As soon 
 as I try to step into the if (errorMessage != null || 
 errorMessage.length() != 0) {line the exception occurs.  Is this a 
 scope issue? 
 
 Thanks.
 
 
 Application: SooperSeekrit Error: java.lang.NullPointerException Reason: 
 Stack trace:
 FileLine#   Method  Package
 DirectAction.java   55  loginAction com.sooperseekrit.app
 NativeMethodAccessorImpl.java   NA  invoke0 sun.reflect
 NativeMethodAccessorImpl.java   39  invoke  sun.reflect
 DelegatingMethodAccessorImpl.java   25  invoke  sun.reflect
 Method.java 597 invoke  java.lang.reflect
 WODirectAction.java 144 performActionNamed  com.webobjects.appserver
 ERXDirectAction.java401 performActionNamed  
 er.extensions.appserver
 WOActionRequestHandler.java 259 _handleRequest  
 com.webobjects.appserver._private
 WOActionRequestHandler.java 158 handleRequest   
 com.webobjects.appserver._private
 ERXDirectActionRequestHandler.java  126 handleRequest   
 er.extensions.appserver
 WOApplication.java  1687dispatchRequest com.webobjects.appserver
 ERXApplication.java 2021dispatchRequestImmediately  
 er.extensions.appserver
 ERXApplication.java 1986dispatchRequest er.extensions.appserver
 WOWorkerThread.java 144 runOnce com.webobjects.appserver._private
 WOWorkerThread.java 226 run com.webobjects.appserver._private
 Thread.java 680 run java.lang
 
 
 
 
 
 package com.sooperseekrit.app;
 
 import java.util.NoSuchElementException;
 
 import com.webobjects.appserver.WOActionResults;
 import com.webobjects.appserver.WOComponent;
 import com.webobjects.appserver.WORequest;
 import com.webobjects.eocontrol.EOQualifier;
 
 import er.extensions.appserver.ERXDirectAction;
 import er.extensions.eof.ERXEC;
 
 import com.sooperseekrit.components.AdminPage;
 import com.sooperseekrit.components.Main;
 import com.sooperseekrit.components.UserPage;
 import com.sooperseekrit.model.User;
 
 public class DirectAction extends ERXDirectAction {
 public DirectAction(WORequest request) {
 super(request);
 }
 
 
 @Override
 public WOActionResults defaultAction() {
 return pageWithName(Main.class.getName());
 }
 
 public WOActionResults loginAction() {
 
 WOComponent nextPage = null;
 String username = request().stringFormValueForKey(username);
 String password = request().stringFormValueForKey(password);
 String errorMessage = null;
 if (username == null || username.length() == 0 || 
 password == null || password.length() == 0) {
 errorMessage = Please enter a username and password;
 }   else {
 try {
 EOQualifier qual = 
 User.USERNAME.eq(username).and(User.PASSWORD.eq(password));
 User user = 
 User.fetchRequiredUser(ERXEC.newEditingContext(), qual);
 ((Session)session()).set_currentUser(user);
 if (user.group().name().equals(Admin)) {
 nextPage = 
 pageWithName(AdminPage.class.getName());
 } else if (user.group().name().equals(User)) {
 nextPage = 
 pageWithName(UserPage.class.getName());
 }
 } catch (NoSuchElementException e) {
 errorMessage = No user found for those 
 credentials;

Re: Weird NullPointerException

2011-03-28 Thread Markus Ruggiero

Thanks Chuck, you made my day.

Cheers
---markus---

On 25.03.2011, at 18:47, Chuck Hill wrote:

 Hi Markus,
 
 
 On Mar 25, 2011, at 3:41 AM, Markus Ruggiero wrote:
 
 I have an EO that has business logic for creating an PDF file. There is a 
 WOComponent that generates an XML which is then fed to ApacheFOP. Following 
 code is in the EO:
 
 GeneratedDocument.java
 
  public void generatePDF(WOComponent sender) {
  if (sender == null) {
  return;
  }
  
  String generatorName = xmlGeneratorClassName();
  if (generatorName != null) {
  XmlGeneratorComponent xmlGenerator = 
 (XmlGeneratorComponent)sender.pageWithName(generatorName);
 
 That might be a problem there.  Try this instead:
 XmlGeneratorComponent xmlGenerator = 
 (XmlGeneratorComponent)WOApplication.application().pageWithName(generatorName,
  new WOContent(sender.context().request()));
 
 It is usually safer to create a new context for things like this.
 
 
 Chuck
 
 
  PDFGenerator pdfGenerator = 
 PDFGenerator.sharedInstance();
  pdfGenerator.generatePdfFile( this, xmlGenerator );
  }
  else {
  log.error( *** No xmlGeneratorClassName available );
  }
  }
 
 
 Depending on the context I call this I get a NullPointerException or not. 
 This is the NPE, context info follows below:
 
 Mar 25 11:13:49 ec_admin[13000] WARN  NSLog  - 
 com.webobjects.appserver._private.WOComponentRequestHandler: Exception 
 occurred while handling request:
 java.lang.NullPointerException
 [2011-3-25 11:13:49 CET] WorkerThread14 java.lang.NullPointerException
  at 
 com.webobjects.appserver._private.WOComponentReference._popComponentFromContext(WOComponentReference.java:108)
  at 
 com.webobjects.appserver._private.WOComponentReference.invokeAction(WOComponentReference.java:128)
  at 
 er.extensions.components._private.ERXSwitchComponent.invokeAction(ERXSwitchComponent.java:117)
  at 
 com.webobjects.appserver._private.WODynamicGroup.invokeChildrenAction(WODynamicGroup.java:105)
  at 
 com.webobjects.appserver._private.WODynamicGroup.invokeAction(WODynamicGroup.java:115)
  at 
 er.extensions.components._private.ERXWORepetition.invokeAction(ERXWORepetition.java:496)
  at 
 com.webobjects.appserver._private.WODynamicGroup.invokeChildrenAction(WODynamicGroup.java:105)
  at 
 er.extensions.components.conditionals.ERXWOConditional.invokeChildrenAction(ERXWOConditional.java:113)
  at 
 com.webobjects.appserver._private.WODynamicGroup.invokeAction(WODynamicGroup.java:115)
  at 
 er.extensions.components.conditionals.ERXWOConditional.invokeAction(ERXWOConditional.java:104)
  at 
 com.webobjects.appserver.WOComponent.invokeAction(WOComponent.java:1079)
  at 
 com.webobjects.appserver._private.WOComponentReference.invokeAction(WOComponentReference.java:127)
  at 
 com.webobjects.appserver._private.WODynamicGroup.invokeChildrenAction(WODynamicGroup.java:105)
  at 
 com.webobjects.appserver._private.WODynamicGroup.invokeAction(WODynamicGroup.java:115)
  at 
 com.webobjects.appserver._private.WOComponentContent.invokeAction(WOComponentContent.java:38)
  at 
 com.webobjects.appserver._private.WODynamicGroup.invokeChildrenAction(WODynamicGroup.java:105)
  at 
 com.webobjects.appserver._private.WODynamicGroup.invokeAction(WODynamicGroup.java:115)
  at 
 com.webobjects.appserver.WOComponent.invokeAction(WOComponent.java:1079)
  at 
 com.webobjects.appserver._private.WOComponentReference.invokeAction(WOComponentReference.java:127)
  at 
 er.extensions.components._private.ERXSwitchComponent.invokeAction(ERXSwitchComponent.java:117)
  at 
 com.webobjects.appserver._private.WODynamicGroup.invokeChildrenAction(WODynamicGroup.java:105)
  at 
 com.webobjects.appserver._private.WODynamicGroup.invokeAction(WODynamicGroup.java:115)
  at 
 com.webobjects.appserver.WOComponent.invokeAction(WOComponent.java:1079)
  at er.directtoweb.pages.ERD2WPage.invokeAction(ERD2WPage.java:619)
  at 
 er.directtoweb.pages.ERD2WListPage.invokeAction(ERD2WListPage.java:479)
  at com.webobjects.appserver.WOSession.invokeAction(WOSession.java:1357)
  at 
 com.webobjects.appserver.WOApplication.invokeAction(WOApplication.java:1745)
  at 
 er.extensions.appserver.ajax.ERXAjaxApplication.invokeAction(ERXAjaxApplication.java:93)
  at 
 er.extensions.appserver.ERXApplication.invokeAction(ERXApplication.java:1863)
  at 
 com.webobjects.appserver._private.WOComponentRequestHandler._dispatchWithPreparedPage(WOComponentRequestHandler.java:206)
  at 
 com.webobjects.appserver._private.WOComponentRequestHandler._dispatchWithPreparedSession(WOComponentRequestHandler.java:298)
  at 
 com.webobjects.appserver._private.WOComponentRequestHandler._dispatchWithPreparedApplication

Weird NullPointerException

2011-03-25 Thread Markus Ruggiero

I have an EO that has business logic for creating an PDF file. There is a 
WOComponent that generates an XML which is then fed to ApacheFOP. Following 
code is in the EO:

GeneratedDocument.java

public void generatePDF(WOComponent sender) {
if (sender == null) {
return;
}

String generatorName = xmlGeneratorClassName();
if (generatorName != null) {
XmlGeneratorComponent xmlGenerator = 
(XmlGeneratorComponent)sender.pageWithName(generatorName);
PDFGenerator pdfGenerator = 
PDFGenerator.sharedInstance();
pdfGenerator.generatePdfFile( this, xmlGenerator );
}
else {
log.error( *** No xmlGeneratorClassName available );
}
}


Depending on the context I call this I get a NullPointerException or not. This 
is the NPE, context info follows below:

Mar 25 11:13:49 ec_admin[13000] WARN  NSLog  - 
com.webobjects.appserver._private.WOComponentRequestHandler: Exception 
occurred while handling request:
java.lang.NullPointerException
[2011-3-25 11:13:49 CET] WorkerThread14 java.lang.NullPointerException
at 
com.webobjects.appserver._private.WOComponentReference._popComponentFromContext(WOComponentReference.java:108)
at 
com.webobjects.appserver._private.WOComponentReference.invokeAction(WOComponentReference.java:128)
at 
er.extensions.components._private.ERXSwitchComponent.invokeAction(ERXSwitchComponent.java:117)
at 
com.webobjects.appserver._private.WODynamicGroup.invokeChildrenAction(WODynamicGroup.java:105)
at 
com.webobjects.appserver._private.WODynamicGroup.invokeAction(WODynamicGroup.java:115)
at 
er.extensions.components._private.ERXWORepetition.invokeAction(ERXWORepetition.java:496)
at 
com.webobjects.appserver._private.WODynamicGroup.invokeChildrenAction(WODynamicGroup.java:105)
at 
er.extensions.components.conditionals.ERXWOConditional.invokeChildrenAction(ERXWOConditional.java:113)
at 
com.webobjects.appserver._private.WODynamicGroup.invokeAction(WODynamicGroup.java:115)
at 
er.extensions.components.conditionals.ERXWOConditional.invokeAction(ERXWOConditional.java:104)
at 
com.webobjects.appserver.WOComponent.invokeAction(WOComponent.java:1079)
at 
com.webobjects.appserver._private.WOComponentReference.invokeAction(WOComponentReference.java:127)
at 
com.webobjects.appserver._private.WODynamicGroup.invokeChildrenAction(WODynamicGroup.java:105)
at 
com.webobjects.appserver._private.WODynamicGroup.invokeAction(WODynamicGroup.java:115)
at 
com.webobjects.appserver._private.WOComponentContent.invokeAction(WOComponentContent.java:38)
at 
com.webobjects.appserver._private.WODynamicGroup.invokeChildrenAction(WODynamicGroup.java:105)
at 
com.webobjects.appserver._private.WODynamicGroup.invokeAction(WODynamicGroup.java:115)
at 
com.webobjects.appserver.WOComponent.invokeAction(WOComponent.java:1079)
at 
com.webobjects.appserver._private.WOComponentReference.invokeAction(WOComponentReference.java:127)
at 
er.extensions.components._private.ERXSwitchComponent.invokeAction(ERXSwitchComponent.java:117)
at 
com.webobjects.appserver._private.WODynamicGroup.invokeChildrenAction(WODynamicGroup.java:105)
at 
com.webobjects.appserver._private.WODynamicGroup.invokeAction(WODynamicGroup.java:115)
at 
com.webobjects.appserver.WOComponent.invokeAction(WOComponent.java:1079)
at er.directtoweb.pages.ERD2WPage.invokeAction(ERD2WPage.java:619)
at 
er.directtoweb.pages.ERD2WListPage.invokeAction(ERD2WListPage.java:479)
at com.webobjects.appserver.WOSession.invokeAction(WOSession.java:1357)
at 
com.webobjects.appserver.WOApplication.invokeAction(WOApplication.java:1745)
at 
er.extensions.appserver.ajax.ERXAjaxApplication.invokeAction(ERXAjaxApplication.java:93)
at 
er.extensions.appserver.ERXApplication.invokeAction(ERXApplication.java:1863)
at 
com.webobjects.appserver._private.WOComponentRequestHandler._dispatchWithPreparedPage(WOComponentRequestHandler.java:206)
at 
com.webobjects.appserver._private.WOComponentRequestHandler._dispatchWithPreparedSession(WOComponentRequestHandler.java:298)
at 
com.webobjects.appserver._private.WOComponentRequestHandler._dispatchWithPreparedApplication(WOComponentRequestHandler.java:332)
at 
com.webobjects.appserver._private.WOComponentRequestHandler._handleRequest(WOComponentRequestHandler.java:369)
at 
com.webobjects.appserver._private.WOComponentRequestHandler.handleRequest(WOComponentRequestHandler.java:442)
at 
com.webobjects.appserver.WOApplication.dispatchRequest(WOApplication.java:1687)
at 
er.extensions.appserver.ERXApplication.dispatchRequestImmediately

Re: Weird NullPointerException

2011-03-25 Thread Chuck Hill

Hi Markus,


On Mar 25, 2011, at 3:41 AM, Markus Ruggiero wrote:

 I have an EO that has business logic for creating an PDF file. There is a 
 WOComponent that generates an XML which is then fed to ApacheFOP. Following 
 code is in the EO:
 
 GeneratedDocument.java
 
   public void generatePDF(WOComponent sender) {
   if (sender == null) {
   return;
   }
   
   String generatorName = xmlGeneratorClassName();
   if (generatorName != null) {
   XmlGeneratorComponent xmlGenerator = 
 (XmlGeneratorComponent)sender.pageWithName(generatorName);

That might be a problem there.  Try this instead:
XmlGeneratorComponent xmlGenerator = 
(XmlGeneratorComponent)WOApplication.application().pageWithName(generatorName, 
new WOContent(sender.context().request()));

It is usually safer to create a new context for things like this.


Chuck


   PDFGenerator pdfGenerator = 
 PDFGenerator.sharedInstance();
   pdfGenerator.generatePdfFile( this, xmlGenerator );
   }
   else {
   log.error( *** No xmlGeneratorClassName available );
   }
   }
 
 
 Depending on the context I call this I get a NullPointerException or not. 
 This is the NPE, context info follows below:
 
 Mar 25 11:13:49 ec_admin[13000] WARN  NSLog  - 
 com.webobjects.appserver._private.WOComponentRequestHandler: Exception 
 occurred while handling request:
 java.lang.NullPointerException
 [2011-3-25 11:13:49 CET] WorkerThread14 java.lang.NullPointerException
   at 
 com.webobjects.appserver._private.WOComponentReference._popComponentFromContext(WOComponentReference.java:108)
   at 
 com.webobjects.appserver._private.WOComponentReference.invokeAction(WOComponentReference.java:128)
   at 
 er.extensions.components._private.ERXSwitchComponent.invokeAction(ERXSwitchComponent.java:117)
   at 
 com.webobjects.appserver._private.WODynamicGroup.invokeChildrenAction(WODynamicGroup.java:105)
   at 
 com.webobjects.appserver._private.WODynamicGroup.invokeAction(WODynamicGroup.java:115)
   at 
 er.extensions.components._private.ERXWORepetition.invokeAction(ERXWORepetition.java:496)
   at 
 com.webobjects.appserver._private.WODynamicGroup.invokeChildrenAction(WODynamicGroup.java:105)
   at 
 er.extensions.components.conditionals.ERXWOConditional.invokeChildrenAction(ERXWOConditional.java:113)
   at 
 com.webobjects.appserver._private.WODynamicGroup.invokeAction(WODynamicGroup.java:115)
   at 
 er.extensions.components.conditionals.ERXWOConditional.invokeAction(ERXWOConditional.java:104)
   at 
 com.webobjects.appserver.WOComponent.invokeAction(WOComponent.java:1079)
   at 
 com.webobjects.appserver._private.WOComponentReference.invokeAction(WOComponentReference.java:127)
   at 
 com.webobjects.appserver._private.WODynamicGroup.invokeChildrenAction(WODynamicGroup.java:105)
   at 
 com.webobjects.appserver._private.WODynamicGroup.invokeAction(WODynamicGroup.java:115)
   at 
 com.webobjects.appserver._private.WOComponentContent.invokeAction(WOComponentContent.java:38)
   at 
 com.webobjects.appserver._private.WODynamicGroup.invokeChildrenAction(WODynamicGroup.java:105)
   at 
 com.webobjects.appserver._private.WODynamicGroup.invokeAction(WODynamicGroup.java:115)
   at 
 com.webobjects.appserver.WOComponent.invokeAction(WOComponent.java:1079)
   at 
 com.webobjects.appserver._private.WOComponentReference.invokeAction(WOComponentReference.java:127)
   at 
 er.extensions.components._private.ERXSwitchComponent.invokeAction(ERXSwitchComponent.java:117)
   at 
 com.webobjects.appserver._private.WODynamicGroup.invokeChildrenAction(WODynamicGroup.java:105)
   at 
 com.webobjects.appserver._private.WODynamicGroup.invokeAction(WODynamicGroup.java:115)
   at 
 com.webobjects.appserver.WOComponent.invokeAction(WOComponent.java:1079)
   at er.directtoweb.pages.ERD2WPage.invokeAction(ERD2WPage.java:619)
   at 
 er.directtoweb.pages.ERD2WListPage.invokeAction(ERD2WListPage.java:479)
   at com.webobjects.appserver.WOSession.invokeAction(WOSession.java:1357)
   at 
 com.webobjects.appserver.WOApplication.invokeAction(WOApplication.java:1745)
   at 
 er.extensions.appserver.ajax.ERXAjaxApplication.invokeAction(ERXAjaxApplication.java:93)
   at 
 er.extensions.appserver.ERXApplication.invokeAction(ERXApplication.java:1863)
   at 
 com.webobjects.appserver._private.WOComponentRequestHandler._dispatchWithPreparedPage(WOComponentRequestHandler.java:206)
   at 
 com.webobjects.appserver._private.WOComponentRequestHandler._dispatchWithPreparedSession(WOComponentRequestHandler.java:298)
   at 
 com.webobjects.appserver._private.WOComponentRequestHandler._dispatchWithPreparedApplication(WOComponentRequestHandler.java:332)
   at 
 com.webobjects.appserver

NullPointerException in DerbyPlugIn$DerbyExpression.isLOBAttribute

2010-09-04 Thread Marvin

Hi,I am new to WebObjects and am working through the documentation and Apple's Movies tutorial found here: http://developer.apple.com/legacy/mac/library/documentation/DeveloperTools/Conceptual/WOTutorial/DatabaseApplication/DatabaseApplication.html.I am running on Mac OS 10.6.4.I was able to get WebObects installed (version 5.4.3) along with the WOLips plugin for eclipse obtained from: http://wiki.objectstyle.org/confluence/display/WOL/Installing+WOLips. I installed it using method 2.I am using the built in VelocityEOGenerator with the Entity.java templates obtained from: http://wiki.objectstyle.org/confluence/display/WOL/EOGenerator+Templates+and+Additions.I have created the Movies database and have generated the Movies entities using the EO Generator and can launch the application but when I do a search as instructed in the tutorial I get the following exception. I have searched this mailing list archive and the web for elements of this error but have not had any luck Does anyone have any idea what is going wrong?Thanks for the help.Marvin[2010-9-4 4:3:15 EDT] main Waiting for requests...java.lang.NullPointerException	at com.webobjects.jdbcadaptor.DerbyPlugIn$DerbyExpression.isLOBAttribute(DerbyPlugIn.java:345)	at com.webobjects.jdbcadaptor.DerbyPlugIn$DerbyExpression.shouldUseBindVariableForAttribute(DerbyPlugIn.java:361)	at com.webobjects.eoaccess.EOSQLExpression.sqlStringForValue(EOSQLExpression.java:1965)	at com.webobjects.eoaccess.EOSQLExpression.sqlStringForKeyValueQualifier(EOSQLExpression.java:1659)	at com.webobjects.eoaccess.EOQualifierSQLGeneration$_KeyValueQualifierSupport.sqlStringForSQLExpression(EOQualifierSQLGeneration.java:463)	at com.webobjects.eoaccess.EOQualifierSQLGeneration$Support._sqlStringForSQLExpression(EOQualifierSQLGeneration.java:165)	at com.webobjects.eoaccess.EOSQLExpression.sqlStringForArrayOfQualifiers(EOSQLExpression.java:1528)	at com.webobjects.eoaccess.EOSQLExpression.sqlStringForConjoinedQualifiers(EOSQLExpression.java:1560)	at com.webobjects.eoaccess.EOQualifierSQLGeneration$_AndQualifierSupport.sqlStringForSQLExpression(EOQualifierSQLGeneration.java:541)	at com.webobjects.eoaccess.EOQualifierSQLGeneration$Support._sqlStringForSQLExpression(EOQualifierSQLGeneration.java:165)	at com.webobjects.eoaccess.EOSQLExpression.prepareSelectExpressionWithAttributes(EOSQLExpression.java:997)	at com.webobjects.jdbcadaptor.JDBCExpression.prepareSelectExpressionWithAttributes(JDBCExpression.java:146)	at com.webobjects.eoaccess.EOSQLExpressionFactory.selectStatementForAttributes(EOSQLExpressionFactory.java:225)	at com.webobjects.jdbcadaptor.JDBCChannel.selectAttributes(JDBCChannel.java:213)	at com.webobjects.eoaccess.EODatabaseChannel._selectWithFetchSpecificationEditingContext(EODatabaseChannel.java:897)	at com.webobjects.eoaccess.EODatabaseChannel.selectObjectsWithFetchSpecification(EODatabaseChannel.java:234)	at com.webobjects.eoaccess.EODatabaseContext._objectsWithFetchSpecificationEditingContext(EODatabaseContext.java:3055)	at com.webobjects.eoaccess.EODatabaseContext.objectsWithFetchSpecification(EODatabaseContext.java:3195)	at com.webobjects.eocontrol.EOObjectStoreCoordinator.objectsWithFetchSpecification(EOObjectStoreCoordinator.java:488)	at com.webobjects.eocontrol.EOEditingContext.objectsWithFetchSpecification(EOEditingContext.java:4069)	at com.webobjects.eocontrol.EOEditingContext.objectsWithFetchSpecification(EOEditingContext.java:)	at your.app.eo._Movie.fetchMovies(_Movie.java:84)	at your.app.components.Main.searchMovies(Main.java:75)	at sunreflect.NativeMethodAccessorImpl.invoke0(Native Method)	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)	at java.lang.reflect.Method.invoke(Method.java:597)	at com.webobjects.foundation.NSKeyValueCoding$ValueAccessor$1.methodValue(NSKeyValueCoding.java:636)	at com.webobjects.foundation.NSKeyValueCoding$_MethodBinding.valueInObject(NSKeyValueCoding.java:1134)	at com.webobjects.foundation.NSKeyValueCoding$DefaultImplementation.valueForKey(NSKeyValueCoding.java:1324)	at com.webobjects.appserver.WOComponent.valueForKey(WOComponent.java:1736)	at com.webobjects.foundation.NSKeyValueCoding$Utility.valueForKey(NSKeyValueCoding.java:447)	at com.webobjects.foundation.NSKeyValueCodingAdditions$DefaultImplementation.valueForKeyPath(NSKeyValueCodingAdditions.java:212)	at com.webobjects.appserver.WOComponent.valueForKeyPath(WOComponent.java:1804)	at com.webobjects.appserver._private.WOKeyValueAssociation.valueInComponent(WOKeyValueAssociation.java:50)	at com.webobjects.appserver._private.WOSubmitButton.invokeAction(WOSubmitButton.java:81)	at com.webobjects.appserver._private.WODynamicGroup.invokeChildrenAction(WODynamicGroup.java:105)	at com.webobjects.appserver._private.WODynamicGroup.invokeAction(WODynamicGroup.java:115)	at com.webobjects.appserver._private.WOForm.invokeAction(WOForm.java:141)	at

Re: NullPointerException in DerbyPlugIn$DerbyExpression.isLOBAttribute

2010-09-04 Thread Mike Schrag

I don't have source in front of me at the moment, but I seem to recall this is 
when you accidentally forget to fill in the external type of an attribute (the 
varchar part). Go back through the attributes in your model and give then a 
once-over. I should really add a check to entity modeler for JDBC attributes 
with missing required values.

Sent from my iPhone

On Sep 4, 2010, at 4:58 AM, Marvin marvin.pub...@me.com wrote:

 Hi,
 
 I am new to WebObjects and am working through the documentation and Apple's 
 Movies tutorial found here: 
 http://developer.apple.com/legacy/mac/library/documentation/DeveloperTools/Conceptual/WOTutorial/DatabaseApplication/DatabaseApplication.html.
 
 I am running on Mac OS 10.6.4.
 
 I was able to get WebObects installed (version 5.4.3) along with the WOLips 
 plugin for eclipse obtained from: 
 http://wiki.objectstyle.org/confluence/display/WOL/Installing+WOLips.  I 
 installed it using method 2.
 
 I am using the built in VelocityEOGenerator with the Entity.java templates 
 obtained from: 
 http://wiki.objectstyle.org/confluence/display/WOL/EOGenerator+Templates+and+Additions.
 
 I have created the Movies database and have generated the Movies entities 
 using the EO Generator and can launch the application but when I do a search 
 as instructed in the tutorial I get the following exception.  I have searched 
 this mailing list archive and the web for elements of this error but have not 
 had any luck  Does anyone have any idea what is going wrong?
 
 Thanks for the help.
 
 Marvin
 
 
 [2010-9-4 4:3:15 EDT] main Waiting for requests...
 java.lang.NullPointerException
   at 
 com.webobjects.jdbcadaptor.DerbyPlugIn$DerbyExpression.isLOBAttribute(DerbyPlugIn.java:345)
   at 
 com.webobjects.jdbcadaptor.DerbyPlugIn$DerbyExpression.shouldUseBindVariableForAttribute(DerbyPlugIn.java:361)
   at 
 com.webobjects.eoaccess.EOSQLExpression.sqlStringForValue(EOSQLExpression.java:1965)
   at 
 com.webobjects.eoaccess.EOSQLExpression.sqlStringForKeyValueQualifier(EOSQLExpression.java:1659)
   at 
 com.webobjects.eoaccess.EOQualifierSQLGeneration$_KeyValueQualifierSupport.sqlStringForSQLExpression(EOQualifierSQLGeneration.java:463)
   at 
 com.webobjects.eoaccess.EOQualifierSQLGeneration$Support._sqlStringForSQLExpression(EOQualifierSQLGeneration.java:165)
   at 
 com.webobjects.eoaccess.EOSQLExpression.sqlStringForArrayOfQualifiers(EOSQLExpression.java:1528)
   at 
 com.webobjects.eoaccess.EOSQLExpression.sqlStringForConjoinedQualifiers(EOSQLExpression.java:1560)
   at 
 com.webobjects.eoaccess.EOQualifierSQLGeneration$_AndQualifierSupport.sqlStringForSQLExpression(EOQualifierSQLGeneration.java:541)
   at 
 com.webobjects.eoaccess.EOQualifierSQLGeneration$Support._sqlStringForSQLExpression(EOQualifierSQLGeneration.java:165)
   at 
 com.webobjects.eoaccess.EOSQLExpression.prepareSelectExpressionWithAttributes(EOSQLExpression.java:997)
   at 
 com.webobjects.jdbcadaptor.JDBCExpression.prepareSelectExpressionWithAttributes(JDBCExpression.java:146)
   at 
 com.webobjects.eoaccess.EOSQLExpressionFactory.selectStatementForAttributes(EOSQLExpressionFactory.java:225)
   at 
 com.webobjects.jdbcadaptor.JDBCChannel.selectAttributes(JDBCChannel.java:213)
   at 
 com.webobjects.eoaccess.EODatabaseChannel._selectWithFetchSpecificationEditingContext(EODatabaseChannel.java:897)
   at 
 com.webobjects.eoaccess.EODatabaseChannel.selectObjectsWithFetchSpecification(EODatabaseChannel.java:234)
   at 
 com.webobjects.eoaccess.EODatabaseContext._objectsWithFetchSpecificationEditingContext(EODatabaseContext.java:3055)
   at 
 com.webobjects.eoaccess.EODatabaseContext.objectsWithFetchSpecification(EODatabaseContext.java:3195)
   at 
 com.webobjects.eocontrol.EOObjectStoreCoordinator.objectsWithFetchSpecification(EOObjectStoreCoordinator.java:488)
   at 
 com.webobjects.eocontrol.EOEditingContext.objectsWithFetchSpecification(EOEditingContext.java:4069)
   at 
 com.webobjects.eocontrol.EOEditingContext.objectsWithFetchSpecification(EOEditingContext.java:)
   at your.app.eo._Movie.fetchMovies(_Movie.java:84)
   at your.app.components.Main.searchMovies(Main.java:75)
   at sunreflect.NativeMethodAccessorImpl.invoke0(Native Method)
   at 
 sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
   at 
 sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
   at java.lang.reflect.Method.invoke(Method.java:597)
   at 
 com.webobjects.foundation.NSKeyValueCoding$ValueAccessor$1.methodValue(NSKeyValueCoding.java:636)
   at 
 com.webobjects.foundation.NSKeyValueCoding$_MethodBinding.valueInObject(NSKeyValueCoding.java:1134)
   at 
 com.webobjects.foundation.NSKeyValueCoding$DefaultImplementation.valueForKey(NSKeyValueCoding.java:1324)
   at 
 com.webobjects.appserver.WOComponent.valueForKey(WOComponent.java:1736)
   at

Re: NullPointerException in DerbyPlugIn$DerbyExpression.isLOBAttribute

2010-09-04 Thread Chuck Hill

Or the prototypes are not configured or not loading properly?


On Sep 4, 2010, at 10:40 AM, Mike Schrag wrote:

 I don't have source in front of me at the moment, but I seem to recall this 
 is when you accidentally forget to fill in the external type of an attribute 
 (the varchar part). Go back through the attributes in your model and give 
 then a once-over. I should really add a check to entity modeler for JDBC 
 attributes with missing required values.
 
 Sent from my iPhone
 
 On Sep 4, 2010, at 4:58 AM, Marvin marvin.pub...@me.com wrote:
 
 Hi,
 
 I am new to WebObjects and am working through the documentation and Apple's 
 Movies tutorial found here: 
 http://developer.apple.com/legacy/mac/library/documentation/DeveloperTools/Conceptual/WOTutorial/DatabaseApplication/DatabaseApplication.html.
 
 I am running on Mac OS 10.6.4.
 
 I was able to get WebObects installed (version 5.4.3) along with the WOLips 
 plugin for eclipse obtained from: 
 http://wiki.objectstyle.org/confluence/display/WOL/Installing+WOLips.  I 
 installed it using method 2.
 
 I am using the built in VelocityEOGenerator with the Entity.java templates 
 obtained from: 
 http://wiki.objectstyle.org/confluence/display/WOL/EOGenerator+Templates+and+Additions.
 
 I have created the Movies database and have generated the Movies entities 
 using the EO Generator and can launch the application but when I do a search 
 as instructed in the tutorial I get the following exception.  I have 
 searched this mailing list archive and the web for elements of this error 
 but have not had any luck  Does anyone have any idea what is going wrong?
 
 Thanks for the help.
 
 Marvin
 
 
 [2010-9-4 4:3:15 EDT] main Waiting for requests...
 java.lang.NullPointerException
  at 
 com.webobjects.jdbcadaptor.DerbyPlugIn$DerbyExpression.isLOBAttribute(DerbyPlugIn.java:345)
  at 
 com.webobjects.jdbcadaptor.DerbyPlugIn$DerbyExpression.shouldUseBindVariableForAttribute(DerbyPlugIn.java:361)
  at 
 com.webobjects.eoaccess.EOSQLExpression.sqlStringForValue(EOSQLExpression.java:1965)
  at 
 com.webobjects.eoaccess.EOSQLExpression.sqlStringForKeyValueQualifier(EOSQLExpression.java:1659)
  at 
 com.webobjects.eoaccess.EOQualifierSQLGeneration$_KeyValueQualifierSupport.sqlStringForSQLExpression(EOQualifierSQLGeneration.java:463)
  at 
 com.webobjects.eoaccess.EOQualifierSQLGeneration$Support._sqlStringForSQLExpression(EOQualifierSQLGeneration.java:165)
  at 
 com.webobjects.eoaccess.EOSQLExpression.sqlStringForArrayOfQualifiers(EOSQLExpression.java:1528)
  at 
 com.webobjects.eoaccess.EOSQLExpression.sqlStringForConjoinedQualifiers(EOSQLExpression.java:1560)
  at 
 com.webobjects.eoaccess.EOQualifierSQLGeneration$_AndQualifierSupport.sqlStringForSQLExpression(EOQualifierSQLGeneration.java:541)
  at 
 com.webobjects.eoaccess.EOQualifierSQLGeneration$Support._sqlStringForSQLExpression(EOQualifierSQLGeneration.java:165)
  at 
 com.webobjects.eoaccess.EOSQLExpression.prepareSelectExpressionWithAttributes(EOSQLExpression.java:997)
  at 
 com.webobjects.jdbcadaptor.JDBCExpression.prepareSelectExpressionWithAttributes(JDBCExpression.java:146)
  at 
 com.webobjects.eoaccess.EOSQLExpressionFactory.selectStatementForAttributes(EOSQLExpressionFactory.java:225)
  at 
 com.webobjects.jdbcadaptor.JDBCChannel.selectAttributes(JDBCChannel.java:213)
  at 
 com.webobjects.eoaccess.EODatabaseChannel._selectWithFetchSpecificationEditingContext(EODatabaseChannel.java:897)
  at 
 com.webobjects.eoaccess.EODatabaseChannel.selectObjectsWithFetchSpecification(EODatabaseChannel.java:234)
  at 
 com.webobjects.eoaccess.EODatabaseContext._objectsWithFetchSpecificationEditingContext(EODatabaseContext.java:3055)
  at 
 com.webobjects.eoaccess.EODatabaseContext.objectsWithFetchSpecification(EODatabaseContext.java:3195)
  at 
 com.webobjects.eocontrol.EOObjectStoreCoordinator.objectsWithFetchSpecification(EOObjectStoreCoordinator.java:488)
  at 
 com.webobjects.eocontrol.EOEditingContext.objectsWithFetchSpecification(EOEditingContext.java:4069)
  at 
 com.webobjects.eocontrol.EOEditingContext.objectsWithFetchSpecification(EOEditingContext.java:)
  at your.app.eo._Movie.fetchMovies(_Movie.java:84)
  at your.app.components.Main.searchMovies(Main.java:75)
  at sunreflect.NativeMethodAccessorImpl.invoke0(Native Method)
  at 
 sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
  at 
 sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
  at java.lang.reflect.Method.invoke(Method.java:597)
  at 
 com.webobjects.foundation.NSKeyValueCoding$ValueAccessor$1.methodValue(NSKeyValueCoding.java:636)
  at 
 com.webobjects.foundation.NSKeyValueCoding$_MethodBinding.valueInObject(NSKeyValueCoding.java:1134)
  at 
 com.webobjects.foundation.NSKeyValueCoding$DefaultImplementation.valueForKey(NSKeyValueCoding.java:1324)
  at

Re: NullPointerException in DerbyPlugIn$DerbyExpression.isLOBAttribute

2010-09-04 Thread Mike Schrag

No way apple's soca teach prototypes, right? I seem to recall those soca only 
teach bad practices.

Sent from my iPhone

On Sep 4, 2010, at 10:46 AM, Chuck Hill ch...@global-village.net wrote:

 Or the prototypes are not configured or not loading properly?
 
 
 On Sep 4, 2010, at 10:40 AM, Mike Schrag wrote:
 
 I don't have source in front of me at the moment, but I seem to recall this 
 is when you accidentally forget to fill in the external type of an attribute 
 (the varchar part). Go back through the attributes in your model and give 
 then a once-over. I should really add a check to entity modeler for JDBC 
 attributes with missing required values.
 
 Sent from my iPhone
 
 On Sep 4, 2010, at 4:58 AM, Marvin marvin.pub...@me.com wrote:
 
 Hi,
 
 I am new to WebObjects and am working through the documentation and Apple's 
 Movies tutorial found here: 
 http://developer.apple.com/legacy/mac/library/documentation/DeveloperTools/Conceptual/WOTutorial/DatabaseApplication/DatabaseApplication.html.
 
 I am running on Mac OS 10.6.4.
 
 I was able to get WebObects installed (version 5.4.3) along with the WOLips 
 plugin for eclipse obtained from: 
 http://wiki.objectstyle.org/confluence/display/WOL/Installing+WOLips.  I 
 installed it using method 2.
 
 I am using the built in VelocityEOGenerator with the Entity.java templates 
 obtained from: 
 http://wiki.objectstyle.org/confluence/display/WOL/EOGenerator+Templates+and+Additions.
 
 I have created the Movies database and have generated the Movies entities 
 using the EO Generator and can launch the application but when I do a 
 search as instructed in the tutorial I get the following exception.  I have 
 searched this mailing list archive and the web for elements of this error 
 but have not had any luck  Does anyone have any idea what is going wrong?
 
 Thanks for the help.
 
 Marvin
 
 
 [2010-9-4 4:3:15 EDT] main Waiting for requests...
 java.lang.NullPointerException
at 
 com.webobjects.jdbcadaptor.DerbyPlugIn$DerbyExpression.isLOBAttribute(DerbyPlugIn.java:345)
at 
 com.webobjects.jdbcadaptor.DerbyPlugIn$DerbyExpression.shouldUseBindVariableForAttribute(DerbyPlugIn.java:361)
at 
 com.webobjects.eoaccess.EOSQLExpression.sqlStringForValue(EOSQLExpression.java:1965)
at 
 com.webobjects.eoaccess.EOSQLExpression.sqlStringForKeyValueQualifier(EOSQLExpression.java:1659)
at 
 com.webobjects.eoaccess.EOQualifierSQLGeneration$_KeyValueQualifierSupport.sqlStringForSQLExpression(EOQualifierSQLGeneration.java:463)
at 
 com.webobjects.eoaccess.EOQualifierSQLGeneration$Support._sqlStringForSQLExpression(EOQualifierSQLGeneration.java:165)
at 
 com.webobjects.eoaccess.EOSQLExpression.sqlStringForArrayOfQualifiers(EOSQLExpression.java:1528)
at 
 com.webobjects.eoaccess.EOSQLExpression.sqlStringForConjoinedQualifiers(EOSQLExpression.java:1560)
at 
 com.webobjects.eoaccess.EOQualifierSQLGeneration$_AndQualifierSupport.sqlStringForSQLExpression(EOQualifierSQLGeneration.java:541)
at 
 com.webobjects.eoaccess.EOQualifierSQLGeneration$Support._sqlStringForSQLExpression(EOQualifierSQLGeneration.java:165)
at 
 com.webobjects.eoaccess.EOSQLExpression.prepareSelectExpressionWithAttributes(EOSQLExpression.java:997)
at 
 com.webobjects.jdbcadaptor.JDBCExpression.prepareSelectExpressionWithAttributes(JDBCExpression.java:146)
at 
 com.webobjects.eoaccess.EOSQLExpressionFactory.selectStatementForAttributes(EOSQLExpressionFactory.java:225)
at 
 com.webobjects.jdbcadaptor.JDBCChannel.selectAttributes(JDBCChannel.java:213)
at 
 com.webobjects.eoaccess.EODatabaseChannel._selectWithFetchSpecificationEditingContext(EODatabaseChannel.java:897)
at 
 com.webobjects.eoaccess.EODatabaseChannel.selectObjectsWithFetchSpecification(EODatabaseChannel.java:234)
at 
 com.webobjects.eoaccess.EODatabaseContext._objectsWithFetchSpecificationEditingContext(EODatabaseContext.java:3055)
at 
 com.webobjects.eoaccess.EODatabaseContext.objectsWithFetchSpecification(EODatabaseContext.java:3195)
at 
 com.webobjects.eocontrol.EOObjectStoreCoordinator.objectsWithFetchSpecification(EOObjectStoreCoordinator.java:488)
at 
 com.webobjects.eocontrol.EOEditingContext.objectsWithFetchSpecification(EOEditingContext.java:4069)
at 
 com.webobjects.eocontrol.EOEditingContext.objectsWithFetchSpecification(EOEditingContext.java:)
at your.app.eo._Movie.fetchMovies(_Movie.java:84)
at your.app.components.Main.searchMovies(Main.java:75)
at sunreflect.NativeMethodAccessorImpl.invoke0(Native Method)
at 
 sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at 
 sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at 
 com.webobjects.foundation.NSKeyValueCoding$ValueAccessor$1.methodValue(NSKeyValueCoding.java:636)
at

Re: NullPointerException in DerbyPlugIn$DerbyExpression.isLOBAttribute

2010-09-04 Thread Mike Schrag

soca? Apparently the iPhone thought I wanted to say soca instead of docs.

Sent from my iPhone

On Sep 4, 2010, at 11:12 AM, Mike Schrag msch...@pobox.com wrote:

 No way apple's soca teach prototypes, right? I seem to recall those soca only 
 teach bad practices.
 
 Sent from my iPhone
 
 On Sep 4, 2010, at 10:46 AM, Chuck Hill ch...@global-village.net wrote:
 
 Or the prototypes are not configured or not loading properly?
 
 
 On Sep 4, 2010, at 10:40 AM, Mike Schrag wrote:
 
 I don't have source in front of me at the moment, but I seem to recall this 
 is when you accidentally forget to fill in the external type of an 
 attribute (the varchar part). Go back through the attributes in your 
 model and give then a once-over. I should really add a check to entity 
 modeler for JDBC attributes with missing required values.
 
 Sent from my iPhone
 
 On Sep 4, 2010, at 4:58 AM, Marvin marvin.pub...@me.com wrote:
 
 Hi,
 
 I am new to WebObjects and am working through the documentation and 
 Apple's Movies tutorial found here: 
 http://developer.apple.com/legacy/mac/library/documentation/DeveloperTools/Conceptual/WOTutorial/DatabaseApplication/DatabaseApplication.html.
 
 I am running on Mac OS 10.6.4.
 
 I was able to get WebObects installed (version 5.4.3) along with the 
 WOLips plugin for eclipse obtained from: 
 http://wiki.objectstyle.org/confluence/display/WOL/Installing+WOLips.  I 
 installed it using method 2.
 
 I am using the built in VelocityEOGenerator with the Entity.java templates 
 obtained from: 
 http://wiki.objectstyle.org/confluence/display/WOL/EOGenerator+Templates+and+Additions.
 
 I have created the Movies database and have generated the Movies entities 
 using the EO Generator and can launch the application but when I do a 
 search as instructed in the tutorial I get the following exception.  I 
 have searched this mailing list archive and the web for elements of this 
 error but have not had any luck  Does anyone have any idea what is going 
 wrong?
 
 Thanks for the help.
 
 Marvin
 
 
 [2010-9-4 4:3:15 EDT] main Waiting for requests...
 java.lang.NullPointerException
   at 
 com.webobjects.jdbcadaptor.DerbyPlugIn$DerbyExpression.isLOBAttribute(DerbyPlugIn.java:345)
   at 
 com.webobjects.jdbcadaptor.DerbyPlugIn$DerbyExpression.shouldUseBindVariableForAttribute(DerbyPlugIn.java:361)
   at 
 com.webobjects.eoaccess.EOSQLExpression.sqlStringForValue(EOSQLExpression.java:1965)
   at 
 com.webobjects.eoaccess.EOSQLExpression.sqlStringForKeyValueQualifier(EOSQLExpression.java:1659)
   at 
 com.webobjects.eoaccess.EOQualifierSQLGeneration$_KeyValueQualifierSupport.sqlStringForSQLExpression(EOQualifierSQLGeneration.java:463)
   at 
 com.webobjects.eoaccess.EOQualifierSQLGeneration$Support._sqlStringForSQLExpression(EOQualifierSQLGeneration.java:165)
   at 
 com.webobjects.eoaccess.EOSQLExpression.sqlStringForArrayOfQualifiers(EOSQLExpression.java:1528)
   at 
 com.webobjects.eoaccess.EOSQLExpression.sqlStringForConjoinedQualifiers(EOSQLExpression.java:1560)
   at 
 com.webobjects.eoaccess.EOQualifierSQLGeneration$_AndQualifierSupport.sqlStringForSQLExpression(EOQualifierSQLGeneration.java:541)
   at 
 com.webobjects.eoaccess.EOQualifierSQLGeneration$Support._sqlStringForSQLExpression(EOQualifierSQLGeneration.java:165)
   at 
 com.webobjects.eoaccess.EOSQLExpression.prepareSelectExpressionWithAttributes(EOSQLExpression.java:997)
   at 
 com.webobjects.jdbcadaptor.JDBCExpression.prepareSelectExpressionWithAttributes(JDBCExpression.java:146)
   at 
 com.webobjects.eoaccess.EOSQLExpressionFactory.selectStatementForAttributes(EOSQLExpressionFactory.java:225)
   at 
 com.webobjects.jdbcadaptor.JDBCChannel.selectAttributes(JDBCChannel.java:213)
   at 
 com.webobjects.eoaccess.EODatabaseChannel._selectWithFetchSpecificationEditingContext(EODatabaseChannel.java:897)
   at 
 com.webobjects.eoaccess.EODatabaseChannel.selectObjectsWithFetchSpecification(EODatabaseChannel.java:234)
   at 
 com.webobjects.eoaccess.EODatabaseContext._objectsWithFetchSpecificationEditingContext(EODatabaseContext.java:3055)
   at 
 com.webobjects.eoaccess.EODatabaseContext.objectsWithFetchSpecification(EODatabaseContext.java:3195)
   at 
 com.webobjects.eocontrol.EOObjectStoreCoordinator.objectsWithFetchSpecification(EOObjectStoreCoordinator.java:488)
   at 
 com.webobjects.eocontrol.EOEditingContext.objectsWithFetchSpecification(EOEditingContext.java:4069)
   at 
 com.webobjects.eocontrol.EOEditingContext.objectsWithFetchSpecification(EOEditingContext.java:)
   at your.app.eo._Movie.fetchMovies(_Movie.java:84)
   at your.app.components.Main.searchMovies(Main.java:75)
   at sunreflect.NativeMethodAccessorImpl.invoke0(Native Method)
   at 
 sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
   at 
 sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
   at java.lang.reflect.Method.invoke(Method.java:597)
   at

Re: NullPointerException in DerbyPlugIn$DerbyExpression.isLOBAttribute

2010-09-04 Thread Marvin Chase

Thanks Mike and Chuck.

I did forget to enter values for the external types.  I had been through the 
steps to set up the EOModel so many times trying to get it to work that I 
eventually convinced myself that the docs were wrong and those values weren't 
used for anything.  Eventually I just started overlooking them in the setup.  
It would help to have warnings for required fields.  Thanks for getting me 
unstuck.

Marvin

On Sep 4, 2010, at 11:13 AM, Mike Schrag wrote:

 soca? Apparently the iPhone thought I wanted to say soca instead of docs.
 
 Sent from my iPhone
 
 On Sep 4, 2010, at 11:12 AM, Mike Schrag msch...@pobox.com wrote:
 
 No way apple's soca teach prototypes, right? I seem to recall those soca 
 only teach bad practices.
 
 Sent from my iPhone
 
 On Sep 4, 2010, at 10:46 AM, Chuck Hill ch...@global-village.net wrote:
 
 Or the prototypes are not configured or not loading properly?
 
 
 On Sep 4, 2010, at 10:40 AM, Mike Schrag wrote:
 
 I don't have source in front of me at the moment, but I seem to recall 
 this is when you accidentally forget to fill in the external type of an 
 attribute (the varchar part). Go back through the attributes in your 
 model and give then a once-over. I should really add a check to entity 
 modeler for JDBC attributes with missing required values.
 
 Sent from my iPhone
 
 On Sep 4, 2010, at 4:58 AM, Marvin marvin.pub...@me.com wrote:
 
 Hi,
 
 I am new to WebObjects and am working through the documentation and 
 Apple's Movies tutorial found here: 
 http://developer.apple.com/legacy/mac/library/documentation/DeveloperTools/Conceptual/WOTutorial/DatabaseApplication/DatabaseApplication.html.
 
 I am running on Mac OS 10.6.4.
 
 I was able to get WebObects installed (version 5.4.3) along with the 
 WOLips plugin for eclipse obtained from: 
 http://wiki.objectstyle.org/confluence/display/WOL/Installing+WOLips.  I 
 installed it using method 2.
 
 I am using the built in VelocityEOGenerator with the Entity.java 
 templates obtained from: 
 http://wiki.objectstyle.org/confluence/display/WOL/EOGenerator+Templates+and+Additions.
 
 I have created the Movies database and have generated the Movies entities 
 using the EO Generator and can launch the application but when I do a 
 search as instructed in the tutorial I get the following exception.  I 
 have searched this mailing list archive and the web for elements of this 
 error but have not had any luck  Does anyone have any idea what is going 
 wrong?
 
 Thanks for the help.
 
 Marvin
 
 
 [2010-9-4 4:3:15 EDT] main Waiting for requests...
 java.lang.NullPointerException
  at 
 com.webobjects.jdbcadaptor.DerbyPlugIn$DerbyExpression.isLOBAttribute(DerbyPlugIn.java:345)
  at 
 com.webobjects.jdbcadaptor.DerbyPlugIn$DerbyExpression.shouldUseBindVariableForAttribute(DerbyPlugIn.java:361)
  at 
 com.webobjects.eoaccess.EOSQLExpression.sqlStringForValue(EOSQLExpression.java:1965)
  at 
 com.webobjects.eoaccess.EOSQLExpression.sqlStringForKeyValueQualifier(EOSQLExpression.java:1659)
  at 
 com.webobjects.eoaccess.EOQualifierSQLGeneration$_KeyValueQualifierSupport.sqlStringForSQLExpression(EOQualifierSQLGeneration.java:463)
  at 
 com.webobjects.eoaccess.EOQualifierSQLGeneration$Support._sqlStringForSQLExpression(EOQualifierSQLGeneration.java:165)
  at 
 com.webobjects.eoaccess.EOSQLExpression.sqlStringForArrayOfQualifiers(EOSQLExpression.java:1528)
  at 
 com.webobjects.eoaccess.EOSQLExpression.sqlStringForConjoinedQualifiers(EOSQLExpression.java:1560)
  at 
 com.webobjects.eoaccess.EOQualifierSQLGeneration$_AndQualifierSupport.sqlStringForSQLExpression(EOQualifierSQLGeneration.java:541)
  at 
 com.webobjects.eoaccess.EOQualifierSQLGeneration$Support._sqlStringForSQLExpression(EOQualifierSQLGeneration.java:165)
  at 
 com.webobjects.eoaccess.EOSQLExpression.prepareSelectExpressionWithAttributes(EOSQLExpression.java:997)
  at 
 com.webobjects.jdbcadaptor.JDBCExpression.prepareSelectExpressionWithAttributes(JDBCExpression.java:146)
  at 
 com.webobjects.eoaccess.EOSQLExpressionFactory.selectStatementForAttributes(EOSQLExpressionFactory.java:225)
  at 
 com.webobjects.jdbcadaptor.JDBCChannel.selectAttributes(JDBCChannel.java:213)
  at 
 com.webobjects.eoaccess.EODatabaseChannel._selectWithFetchSpecificationEditingContext(EODatabaseChannel.java:897)
  at 
 com.webobjects.eoaccess.EODatabaseChannel.selectObjectsWithFetchSpecification(EODatabaseChannel.java:234)
  at 
 com.webobjects.eoaccess.EODatabaseContext._objectsWithFetchSpecificationEditingContext(EODatabaseContext.java:3055)
  at 
 com.webobjects.eoaccess.EODatabaseContext.objectsWithFetchSpecification(EODatabaseContext.java:3195)
  at 
 com.webobjects.eocontrol.EOObjectStoreCoordinator.objectsWithFetchSpecification(EOObjectStoreCoordinator.java:488)
  at 
 com.webobjects.eocontrol.EOEditingContext.objectsWithFetchSpecification(EOEditingContext.java:4069)
  at 
 com.webobjects.eocontrol.EOEditingContext.objectsWithFetchSpecification(EOEditingContext.java:)
  at

Re: NullPointerException in DerbyPlugIn$DerbyExpression.isLOBAttribute

2010-09-04 Thread Chuck Hill

On Sep 4, 2010, at 11:12 AM, Mike Schrag wrote:

 No way apple's soca teach prototypes, right? I seem to recall those soca only 
 teach bad practices.

Yeah, the apple soca fwe narki in places.  er, whatever.

 Sent from my iPhone

Apparently. :-P

I missed the Apple reference, only the Wiki link sunk in.  Didn't someone make 
proper directions?

http://wiki.objectstyle.org/confluence/display/WO/Home
http://www.wocommunity.org/

Hmmm, guess not.


Chuck



 On Sep 4, 2010, at 10:46 AM, Chuck Hill ch...@global-village.net wrote:
 
 Or the prototypes are not configured or not loading properly?
 
 
 On Sep 4, 2010, at 10:40 AM, Mike Schrag wrote:
 
 I don't have source in front of me at the moment, but I seem to recall this 
 is when you accidentally forget to fill in the external type of an 
 attribute (the varchar part). Go back through the attributes in your 
 model and give then a once-over. I should really add a check to entity 
 modeler for JDBC attributes with missing required values.
 
 Sent from my iPhone
 
 On Sep 4, 2010, at 4:58 AM, Marvin marvin.pub...@me.com wrote:
 
 Hi,
 
 I am new to WebObjects and am working through the documentation and 
 Apple's Movies tutorial found here: 
 http://developer.apple.com/legacy/mac/library/documentation/DeveloperTools/Conceptual/WOTutorial/DatabaseApplication/DatabaseApplication.html.
 
 I am running on Mac OS 10.6.4.
 
 I was able to get WebObects installed (version 5.4.3) along with the 
 WOLips plugin for eclipse obtained from: 
 http://wiki.objectstyle.org/confluence/display/WOL/Installing+WOLips.  I 
 installed it using method 2.
 
 I am using the built in VelocityEOGenerator with the Entity.java templates 
 obtained from: 
 http://wiki.objectstyle.org/confluence/display/WOL/EOGenerator+Templates+and+Additions.
 
 I have created the Movies database and have generated the Movies entities 
 using the EO Generator and can launch the application but when I do a 
 search as instructed in the tutorial I get the following exception.  I 
 have searched this mailing list archive and the web for elements of this 
 error but have not had any luck  Does anyone have any idea what is going 
 wrong?
 
 Thanks for the help.
 
 Marvin
 
 
 [2010-9-4 4:3:15 EDT] main Waiting for requests...
 java.lang.NullPointerException
   at 
 com.webobjects.jdbcadaptor.DerbyPlugIn$DerbyExpression.isLOBAttribute(DerbyPlugIn.java:345)
   at 
 com.webobjects.jdbcadaptor.DerbyPlugIn$DerbyExpression.shouldUseBindVariableForAttribute(DerbyPlugIn.java:361)
   at 
 com.webobjects.eoaccess.EOSQLExpression.sqlStringForValue(EOSQLExpression.java:1965)
   at 
 com.webobjects.eoaccess.EOSQLExpression.sqlStringForKeyValueQualifier(EOSQLExpression.java:1659)
   at 
 com.webobjects.eoaccess.EOQualifierSQLGeneration$_KeyValueQualifierSupport.sqlStringForSQLExpression(EOQualifierSQLGeneration.java:463)
   at 
 com.webobjects.eoaccess.EOQualifierSQLGeneration$Support._sqlStringForSQLExpression(EOQualifierSQLGeneration.java:165)
   at 
 com.webobjects.eoaccess.EOSQLExpression.sqlStringForArrayOfQualifiers(EOSQLExpression.java:1528)
   at 
 com.webobjects.eoaccess.EOSQLExpression.sqlStringForConjoinedQualifiers(EOSQLExpression.java:1560)
   at 
 com.webobjects.eoaccess.EOQualifierSQLGeneration$_AndQualifierSupport.sqlStringForSQLExpression(EOQualifierSQLGeneration.java:541)
   at 
 com.webobjects.eoaccess.EOQualifierSQLGeneration$Support._sqlStringForSQLExpression(EOQualifierSQLGeneration.java:165)
   at 
 com.webobjects.eoaccess.EOSQLExpression.prepareSelectExpressionWithAttributes(EOSQLExpression.java:997)
   at 
 com.webobjects.jdbcadaptor.JDBCExpression.prepareSelectExpressionWithAttributes(JDBCExpression.java:146)
   at 
 com.webobjects.eoaccess.EOSQLExpressionFactory.selectStatementForAttributes(EOSQLExpressionFactory.java:225)
   at 
 com.webobjects.jdbcadaptor.JDBCChannel.selectAttributes(JDBCChannel.java:213)
   at 
 com.webobjects.eoaccess.EODatabaseChannel._selectWithFetchSpecificationEditingContext(EODatabaseChannel.java:897)
   at 
 com.webobjects.eoaccess.EODatabaseChannel.selectObjectsWithFetchSpecification(EODatabaseChannel.java:234)
   at 
 com.webobjects.eoaccess.EODatabaseContext._objectsWithFetchSpecificationEditingContext(EODatabaseContext.java:3055)
   at 
 com.webobjects.eoaccess.EODatabaseContext.objectsWithFetchSpecification(EODatabaseContext.java:3195)
   at 
 com.webobjects.eocontrol.EOObjectStoreCoordinator.objectsWithFetchSpecification(EOObjectStoreCoordinator.java:488)
   at 
 com.webobjects.eocontrol.EOEditingContext.objectsWithFetchSpecification(EOEditingContext.java:4069)
   at 
 com.webobjects.eocontrol.EOEditingContext.objectsWithFetchSpecification(EOEditingContext.java:)
   at your.app.eo._Movie.fetchMovies(_Movie.java:84)
   at your.app.components.Main.searchMovies(Main.java:75)
   at sunreflect.NativeMethodAccessorImpl.invoke0(Native Method)
   at 
 sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
   at

Re: WOXMLDecoder NullPointerException

2010-03-14 Thread Simon

my advice is to use a mapping file. no mapping file = debugging nightmare

simon

On 13 March 2010 11:45, Shravan Kumar. M mshravan_...@yahoo.com wrote:
 Hi Group,

 Following code to decode an xml file or xml string is resuting in NPE, could
 you any one please advise what's going wrong here:

         WOXMLDecoder xmlDecoder = WOXMLDecoder.decoder();
         //InputStream is =
 application().resourceManager().inputStreamForResourceNamed(supra.xml,
 null, null);
         //System.out.println(is... + is);
         //Object obj = xmlDecoder.decodeRootObject(new NSData(is, 1024));
         String xmlString = ?xml version='1.0'
 encoding='UTF-8'?suprachilde123/childe/supra;
         StringReader stringReader = new StringReader(xmlString);
         InputSource is = new InputSource(stringReader);
         Object obj = xmlDecoder.decodeRootObject(is);
         System.out.println(childe:  + xmlDecoder.valueForKey(childe));

 java.lang.NullPointerException
 [2010-03-13 17:08:56 IST] WorkerThread0 java.lang.NullPointerException
     at
 com.webobjects.appserver.xml.WOXMLDecoder.decodeObjectForKey(WOXMLDecoder.java:744)
     at
 com.webobjects.appserver.xml._private._DecodingHandler.root(_DecodingHandler.java:31)
     at
 com.webobjects.appserver.xml.WOXMLDecoder.decodeRootObject(WOXMLDecoder.java:706)
     at your.app.components.Main.submitData(Main.java:160)

 Thank You,
 Shravan Kumar. M
 ---


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Re: WOXMLDecoder NullPointerException

2010-03-14 Thread Shravan Kumar. M

Okay. Will try it out! Thanks for your suggestion, Simon!

From: Simon si...@potwells.co.uk
To: Shravan Kumar. M mshravan_...@yahoo.com
Cc: WO Dev Group webobjects-dev@lists.apple.com
Sent: Sun, March 14, 2010 4:35:04 PM
Subject: Re: WOXMLDecoder NullPointerException

my advice is to use a mapping file. no mapping file = debugging nightmare

simon

On 13 March 2010 11:45, Shravan Kumar. M mshravan_...@yahoo.com wrote:
 Hi Group,

 Following code to decode an xml file or xml string is resuting in NPE, could
 you any one please advise what's going wrong here:

 WOXMLDecoder xmlDecoder = WOXMLDecoder.decoder();
 //InputStream is =
 application().resourceManager().inputStreamForResourceNamed(supra.xml,
 null, null);
 //System.out.println(is... + is);
 //Object obj = xmlDecoder.decodeRootObject(new NSData(is, 1024));
 String xmlString = ?xml version='1.0'
 encoding='UTF-8'?suprachilde123/childe/supra;
 StringReader stringReader = new StringReader(xmlString);
 InputSource is = new InputSource(stringReader);
 Object obj = xmlDecoder.decodeRootObject(is);
 System.out.println(childe:  + xmlDecoder.valueForKey(childe));

 java.lang.NullPointerException
 [2010-03-13 17:08:56 IST] WorkerThread0 java.lang.NullPointerException
 at
 com.webobjects.appserver.xml.WOXMLDecoder.decodeObjectForKey(WOXMLDecoder.java:744)
 at
 com.webobjects.appserver.xml._private._DecodingHandler.root(_DecodingHandler.java:31)
 at
 com.webobjects.appserver.xml.WOXMLDecoder.decodeRootObject(WOXMLDecoder.java:706)
 at your.app.components.Main.submitData(Main.java:160)

 Thank You,
 Shravan Kumar. M
 ---

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 Help/Unsubscribe/Update your Subscription:
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WOXMLDecoder NullPointerException

2010-03-13 Thread Shravan Kumar. M

Hi Group,

Following code to decode an xml file or xml string is resuting in NPE, could 
you any one please advise what's going wrong here:

WOXMLDecoder xmlDecoder = WOXMLDecoder.decoder();
//InputStream is = 
application().resourceManager().inputStreamForResourceNamed(supra.xml, null, 
null);
//System.out.println(is... + is);
//Object obj = xmlDecoder.decodeRootObject(new NSData(is, 1024));
String xmlString = ?xml version='1.0'  
encoding='UTF-8'?suprachilde123/childe/supra;
StringReader stringReader = new StringReader(xmlString); 
InputSource is = new InputSource(stringReader); 
Object obj = xmlDecoder.decodeRootObject(is);
System.out.println(childe:  + xmlDecoder.valueForKey(childe));

java.lang.NullPointerException
[2010-03-13 17:08:56 IST] WorkerThread0 java.lang.NullPointerException
at 
com.webobjects.appserver.xml.WOXMLDecoder.decodeObjectForKey(WOXMLDecoder.java:744)
at 
com.webobjects.appserver.xml._private._DecodingHandler.root(_DecodingHandler.java:31)
at 
com.webobjects.appserver.xml.WOXMLDecoder.decodeRootObject(WOXMLDecoder.java:706)
at your.app.components.Main.submitData(Main.java:160)

Thank You,
Shravan Kumar. M
---



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Fw: WOXMLDecoder NullPointerException

2010-03-13 Thread Shravan Kumar. M

Any suggestions please?

Fw: WOXMLDecoder NullPointerException
WOXMLDecoder NullPointerException
Sat Mar 13 17:15:22 2010
From: 
Shravan Kumar. M mshravan_...@yahoo.com
To: 
WO Dev Group webobjects-dev@lists.apple.com
Hi Group,

Following code to decode an xml file or xml string is resuting in NPE, could 
you any one please advise what's going wrong here:

WOXMLDecoder xmlDecoder = WOXMLDecoder.decoder();
//InputStream is = 
application().resourceManager().inputStreamForResourceNamed(supra.xml, null, 
null);
//supra.xml has similar xml as shown in xmlString below, but little elaborated.
//System.out.println(is... + is);
//Object obj = xmlDecoder.decodeRootObject(new NSData(is, 1024));
String xmlString = ?xml version='1.0'  
encoding='UTF-8'?suprachilde123/childe/supra;
StringReader stringReader = new StringReader(xmlString); 
InputSource is = new InputSource(stringReader); 
Object obj = xmlDecoder.decodeRootObject(is);
System.out.println(childe:  + xmlDecoder.valueForKey(childe));

java.lang.NullPointerException
[2010-03-13 17:08:56 IST] WorkerThread0 java.lang.NullPointerException
at 
com.webobjects.appserver.xml.WOXMLDecoder.decodeObjectForKey(WOXMLDecoder.java:744)
at 
com.webobjects.appserver.xml._private._DecodingHandler.root(_DecodingHandler.java:31)
at 
com.webobjects.appserver.xml.WOXMLDecoder.decodeRootObject(WOXMLDecoder.java:706)
at your.app.components.Main.submitData(Main.java:160)

Thank You,
Shravan Kumar. M
---

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Re: NullPointerException in many-many relationship cross two models

2009-12-15 Thread Kieran Kelleher


Chuck, you are mean! ;-)

Ren, here is connection URL example:

jdbc:mysql://myhost/mydatabase? 
capitalizeTypenames=trueuseUnicode=truecharacterEncoding=UTF-8


Also, changing the my.cnf will not magically change databases and  
tables that have been previously created without UTF-8.



See the CREATE DATABASE and CREATE TABLE statement docs online. YOu  
can verify a table's current encoding with SHOW CREATE TABLE. I  
*think* you can even have different encodings on different columns if  
you really want to . that of course if the versatility of the  
wonderful MySQL. The reference manual is generally comprehensive

http://dev.mysql.com/doc/refman/5.0/en/
http://dev.mysql.com/doc/refman/5.0/en/charset.html

HTH, Kieran

On Dec 14, 2009, at 10:59 PM, Chuck Hill wrote:

For WebObjects and Java, UTF-8.  Not sure what MySquirrelyDatabase  
needs.





On Dec 14, 2009, at 7:51 PM, Ren, Kevin wrote:



yes, this confused me. In my.cnf default-character-set=utf8

I did google search someone said  characterEncoding=UTF8 working,  
others said characterEncoding=UTF-8.


Not sure which one is right?


Kevin


-Original Message-
From: Chuck Hill [mailto:ch...@global-village.net]
Sent: Tuesday, 15 December 2009 4:42 p.m.
To: Ran, Kevin
Cc: webobjects-dev@lists.apple.com
Subject: Re: NullPointerException in many-many relationship
cross two models


On Dec 14, 2009, at 7:37 PM, Ren, Kevin wrote:



Hi,

You are brilliant, guys. It's simple copy/past error in the URL.

jdbc:mysql://156.13.128.28:3306/school?
useUnicode=truecharacterEncoding=UTF8

One was using characterEncoding=UTF-8 instead of UTF8, causing this
problem.

Now I change them both to UTF8 and works,



UTF-8 is the correct form


Chuck



-Original Message-
From:
webobjects-dev-bounces+kevin.ren=anz@lists.apple.com
[mailto:webobjects-dev-bounces+kevin.ren=anz@lists.apple.c
om] On Behalf Of Mike Schrag
Sent: Tuesday, 15 December 2009 4:25 p.m.
To: Development WebObjects
Subject: Re: NullPointerException in many-many

relationship cross two

models

same connection dictionary like i think they're the same

because the

url is the same or same like i tested with
.equals(..) at runtime and it returns true thereby proving they're
the same (technically they don't have to be exactly

.equals, but if

they are .equals, they are same-enough)

On Dec 14, 2009, at 10:22 PM, Ren, Kevin wrote:



HI,

I checked that, they are same connection dictionary,

because this just moral test example.


Not using WOnder,

Thanks

Kevin


-Original Message-
From: Chuck Hill [mailto:ch...@global-village.net]
Sent: Tuesday, 15 December 2009 4:18 p.m.
To: Ren, Kevin
Cc: webobjects-dev@lists.apple.com
Subject: Re: NullPointerException in many-many

relationship cross two

models

Both models need to have the exact (and I _do_ mean

_exact_) same

connection dictionary.  The dictionaries must be equals().

This is

most easily accomplished by setting the programatically

when the app

loads.  Wonder, of course, does this.


Chuck


On Dec 14, 2009, at 3:30 PM, Ren, Kevin wrote:

Hi,

There is m-m relationship between A and B entities which are in
different models, but in same database. I can create and

platen this

relationship in EOModler and got AB table as well.

AB is in the same DB and only has compound PK like A_ID

and B_ID.


When I tried to do saveChanges got this error


[2009-12-15 12:6:48 NZDT] WorkerThread0
java.lang.NullPointerException
at
com
.webobjects
.eoaccess
.EODatabaseContext





.primaryKeyForIntermediateRowFromSourceObject 
(EODatabaseContext.java:

4845)

at
com
.webobjects
.eoaccess
.EODatabaseContext
.databaseOperationForIntermediateRowFromSourceObject
(EODatabaseContext.java:4863)

at
com
.webobjects
.eoaccess
.EODatabaseContext
.recordInsertForIntermediateRowFromSourceObject
(EODatabaseContext.java:4888)

at
com
.webobjects
.eoaccess
.EODatabaseContext
.relayAttributesInRelationshipSourceObjectDestinationObject
(EODatabaseContext.java:4913)

at
com
.webobjects
.eoaccess
.EODatabaseContext
.relayAttributesInRelationshipSourceObjectDestinationObjects
(EODatabaseContext.java:4966)

at
com
.webobjects
.eoaccess
.EODatabaseContext
.recordChangesInEditingContext(EODatabaseContext.java:6036)
at
com
.webobjects
.eocontrol
.EOObjectStoreCoordinator
.saveChangesInEditingContext(EOObjectStoreCoordinator.java:373)

at
com
.webobjects

.eocontrol.EOEditingContext.saveChanges(EOEditingContext.java: 
3192)



And I found only updateObjects could has two entities's

details and

insertedObjects does not print out anything.

Not sure this does not work in across models or something

else need

setup?

thanks



Xiaowen(Kevin) Ren

Analyst Programmer
Channel Applications, Retail Applications ANZ National Bank

Ltd Level

6 ASB Tower
2 Hunter Street
PO Box 1791
Wellington
Phone: 04 4365363
Fax: 04 8028696





This e-mail and any attachments to it (the

Communication) is,

unless otherwise stated

Re: NullPointerException in many-many relationship cross two models

2009-12-15 Thread David Avendasora

On Dec 15, 2009, at 6:55 AM, Kieran Kelleher wrote:

Chuck, you are mean! ;-)

Ren, here is connection URL example:

jdbc:mysql://myhost/mydatabase?capitalizeTypenames=trueuseUnicode=truecharacterEncoding=UTF-8

Also, changing the my.cnf will not magically change databases and tables that
have been previously created without UTF-8.

See the CREATE DATABASE and CREATE TABLE statement docs online. YOu can
verify a table's current encoding with SHOW CREATE TABLE. I *think* you can
even have different encodings on different columns if you really want to
. that of course if the versatility of the wonderful MySQL. The reference
manual is generally comprehensive
http://dev.mysql.com/doc/refman/5.0/en/
http://dev.mysql.com/doc/refman/5.0/en/charset.html

HTH, Kieran

Whew. Good thing MySQL is so simple. :-P

Dave

On Dec 14, 2009, at 10:59 PM, Chuck Hill wrote:

For WebObjects and Java, UTF-8. Not sure what MySquirrelyDatabase needs.

On Dec 14, 2009, at 7:51 PM, Ren, Kevin wrote:

yes, this confused me. In my.cnf default-character-set=utf8

I did google search someone said characterEncoding=UTF8 working, others
said characterEncoding=UTF-8.

Not sure which one is right?

Kevin

-Original Message-
From: Chuck Hill [mailto:ch...@global-village.net]
Sent: Tuesday, 15 December 2009 4:42 p.m.
To: Ran, Kevin
Cc: webobjects-dev@lists.apple.com
Subject: Re: NullPointerException in many-many relationship
cross two models

On Dec 14, 2009, at 7:37 PM, Ren, Kevin wrote:

Hi,

You are brilliant, guys. It's simple copy/past error in the URL.

jdbc:mysql://156.13.128.28:3306/school?
useUnicode=truecharacterEncoding=UTF8

One was using characterEncoding=UTF-8 instead of UTF8, causing this
problem.

Now I change them both to UTF8 and works,

UTF-8 is the correct form

Chuck

-Original Message-
From:
webobjects-dev-bounces+kevin.ren=anz@lists.apple.com
[mailto:webobjects-dev-bounces+kevin.ren=anz@lists.apple.c
om] On Behalf Of Mike Schrag
Sent: Tuesday, 15 December 2009 4:25 p.m.
To: Development WebObjects
Subject: Re: NullPointerException in many-many
relationship cross two
models

same connection dictionary like i think they're the same
because the
url is the same or same like i tested with
.equals(..) at runtime and it returns true thereby proving they're
the same (technically they don't have to be exactly
.equals, but if
they are .equals, they are same-enough)

On Dec 14, 2009, at 10:22 PM, Ren, Kevin wrote:

HI,

I checked that, they are same connection dictionary,
because this just moral test example.

Not using WOnder,

Thanks

Kevin

-Original Message-
From: Chuck Hill [mailto:ch...@global-village.net]
Sent: Tuesday, 15 December 2009 4:18 p.m.
To: Ren, Kevin
Cc: webobjects-dev@lists.apple.com
Subject: Re: NullPointerException in many-many
relationship cross two
models

Both models need to have the exact (and I _do_ mean
_exact_) same
connection dictionary. The dictionaries must be equals().
This is
most easily accomplished by setting the programatically
when the app
loads. Wonder, of course, does this.

Chuck

On Dec 14, 2009, at 3:30 PM, Ren, Kevin wrote:
Hi,

There is m-m relationship between A and B entities which are in
different models, but in same database. I can create and
platen this
relationship in EOModler and got AB table as well.

AB is in the same DB and only has compound PK like A_ID
and B_ID.

When I tried to do saveChanges got this error

[2009-12-15 12:6:48 NZDT] WorkerThread0
java.lang.NullPointerException
at
com
.webobjects
.eoaccess
.EODatabaseContext

.primaryKeyForIntermediateRowFromSourceObject(EODatabaseContext.java:
4845)

at
com
.webobjects
.eoaccess
.EODatabaseContext
.databaseOperationForIntermediateRowFromSourceObject
(EODatabaseContext.java:4863)

at
com
.webobjects
.eoaccess
.EODatabaseContext
.recordInsertForIntermediateRowFromSourceObject
(EODatabaseContext.java:4888)

at
com
.webobjects
.eoaccess
.EODatabaseContext
.relayAttributesInRelationshipSourceObjectDestinationObject
(EODatabaseContext.java:4913)

at
com
.webobjects
.eoaccess
.EODatabaseContext
.relayAttributesInRelationshipSourceObjectDestinationObjects
(EODatabaseContext.java:4966)

at
com
.webobjects
.eoaccess
.EODatabaseContext
.recordChangesInEditingContext(EODatabaseContext.java:6036)
at
com
.webobjects
.eocontrol
.EOObjectStoreCoordinator
.saveChangesInEditingContext(EOObjectStoreCoordinator.java:373)

at
com
.webobjects

.eocontrol.EOEditingContext.saveChanges(EOEditingContext.java:3192)

And I found only updateObjects could has two entities's
details and
insertedObjects does not print out anything.

Not sure this does not work in across models or something
else need
setup?

thanks

Xiaowen(Kevin) Ren

Analyst

NullPointerException in many-many relationship cross two models


Hi,

There is m-m relationship between A and B entities which are in different 
models, but in same database. I can create and platen this relationship in 
EOModler and got AB table as well.
AB is in the same DB and only has compound PK like A_ID and B_ID.

When I tried to do saveChanges got this error


[2009-12-15 12:6:48 NZDT] WorkerThread0 java.lang.NullPointerException
at 
com.webobjects.eoaccess.EODatabaseContext.primaryKeyForIntermediateRowFromSourceObject(EODatabaseContext.java:4845)
at 
com.webobjects.eoaccess.EODatabaseContext.databaseOperationForIntermediateRowFromSourceObject(EODatabaseContext.java:4863)
at 
com.webobjects.eoaccess.EODatabaseContext.recordInsertForIntermediateRowFromSourceObject(EODatabaseContext.java:4888)
at 
com.webobjects.eoaccess.EODatabaseContext.relayAttributesInRelationshipSourceObjectDestinationObject(EODatabaseContext.java:4913)
at 
com.webobjects.eoaccess.EODatabaseContext.relayAttributesInRelationshipSourceObjectDestinationObjects(EODatabaseContext.java:4966)
at 
com.webobjects.eoaccess.EODatabaseContext.recordChangesInEditingContext(EODatabaseContext.java:6036)
at 
com.webobjects.eocontrol.EOObjectStoreCoordinator.saveChangesInEditingContext(EOObjectStoreCoordinator.java:373)
at 
com.webobjects.eocontrol.EOEditingContext.saveChanges(EOEditingContext.java:3192)


And I found only updateObjects could has two entities's details and 
insertedObjects does not print out anything.

Not sure this does not work in across models or something else need setup?

thanks



Xiaowen(Kevin) Ren

Analyst Programmer
Channel Applications, Retail Applications
ANZ National Bank Ltd
Level 6 ASB Tower
2 Hunter Street 
PO Box 1791
Wellington
Phone: 04 4365363
Fax: 04 8028696





This e-mail and any attachments to it (the Communication) is, unless 
otherwise stated, confidential,  may contain copyright material and is for the 
use only of the intended recipient. If you receive the Communication in error, 
please notify the sender immediately by return e-mail, delete the Communication 
and the return e-mail, and do not read, copy, retransmit or otherwise deal with 
it. Any views expressed in the Communication are those of the individual sender 
only, unless expressly stated to be those of Australia and New Zealand Banking 
Group Limited ABN 11 005 357 522, or any of its related entities including ANZ 
National Bank Limited (together ANZ). ANZ does not accept liability in 
connection with the integrity of or errors in the Communication, computer 
virus, data corruption, interference or delay arising from or in respect of the 
Communication.
 ___
Do not post admin requests to the list. They will be ignored.
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Re: NullPointerException in many-many relationship cross two models

2009-12-14 Thread Chuck Hill

Both models need to have the exact (and I _do_ mean _exact_) same  
connection dictionary.  The dictionaries must be equals().  This is  
most easily accomplished by setting the programatically when the app  
loads.  Wonder, of course, does this.



Chuck


On Dec 14, 2009, at 3:30 PM, Ren, Kevin wrote:

Hi,

There is m-m relationship between A and B entities which are in  
different models, but in same database. I can create and platen this  
relationship in EOModler and got AB table as well.


AB is in the same DB and only has compound PK like A_ID and B_ID.

When I tried to do saveChanges got this error


[2009-12-15 12:6:48 NZDT] WorkerThread0  
java.lang.NullPointerException
at  
com 
.webobjects 
.eoaccess 
.EODatabaseContext 
.primaryKeyForIntermediateRowFromSourceObject(EODatabaseContext.java: 
4845)


at  
com 
.webobjects 
.eoaccess 
.EODatabaseContext 
.databaseOperationForIntermediateRowFromSourceObject 
(EODatabaseContext.java:4863)


at  
com 
.webobjects 
.eoaccess 
.EODatabaseContext 
.recordInsertForIntermediateRowFromSourceObject 
(EODatabaseContext.java:4888)


at  
com 
.webobjects 
.eoaccess 
.EODatabaseContext 
.relayAttributesInRelationshipSourceObjectDestinationObject 
(EODatabaseContext.java:4913)


at  
com 
.webobjects 
.eoaccess 
.EODatabaseContext 
.relayAttributesInRelationshipSourceObjectDestinationObjects 
(EODatabaseContext.java:4966)


at  
com 
.webobjects 
.eoaccess 
.EODatabaseContext 
.recordChangesInEditingContext(EODatabaseContext.java:6036)
at  
com 
.webobjects 
.eocontrol 
.EOObjectStoreCoordinator 
.saveChangesInEditingContext(EOObjectStoreCoordinator.java:373)


at  
com 
.webobjects 
.eocontrol.EOEditingContext.saveChanges(EOEditingContext.java:3192)



And I found only updateObjects could has two entities's details and  
insertedObjects does not print out anything.


Not sure this does not work in across models or something else need  
setup?


thanks



Xiaowen(Kevin) Ren

Analyst Programmer
Channel Applications, Retail Applications
ANZ National Bank Ltd
Level 6 ASB Tower
2 Hunter Street
PO Box 1791
Wellington
Phone: 04 4365363
Fax: 04 8028696





This e-mail and any attachments to it (the Communication) is,  
unless otherwise stated, confidential,  may contain copyright  
material and is for the use only of the intended recipient. If you  
receive the Communication in error, please notify the sender  
immediately by return e-mail, delete the Communication and the  
return e-mail, and do not read, copy, retransmit or otherwise deal  
with it. Any views expressed in the Communication are those of the  
individual sender only, unless expressly stated to be those of  
Australia and New Zealand Banking Group Limited ABN 11 005 357 522,  
or any of its related entities including ANZ National Bank Limited  
(together ANZ). ANZ does not accept liability in connection with  
the integrity of or errors in the Communication, computer virus,  
data corruption, interference or delay arising from or in respect of  
the Communication.


___
Do not post admin requests to the list. They will be ignored.
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--
Chuck Hill Senior Consultant / VP Development

Practical WebObjects - for developers who want to increase their  
overall knowledge of WebObjects or who are trying to solve specific  
problems.

http://www.global-village.net/products/practical_webobjects







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RE: NullPointerException in many-many relationship cross two models


 HI,

I checked that, they are same connection dictionary, because this just moral 
test example.

Not using WOnder,

Thanks

Kevin

 -Original Message-
 From: Chuck Hill [mailto:ch...@global-village.net] 
 Sent: Tuesday, 15 December 2009 4:18 p.m.
 To: Ren, Kevin
 Cc: webobjects-dev@lists.apple.com
 Subject: Re: NullPointerException in many-many relationship 
 cross two models
 
 Both models need to have the exact (and I _do_ mean _exact_) 
 same connection dictionary.  The dictionaries must be 
 equals().  This is most easily accomplished by setting the 
 programatically when the app loads.  Wonder, of course, does this.
 
 
 Chuck
 
 
 On Dec 14, 2009, at 3:30 PM, Ren, Kevin wrote:
  Hi,
 
  There is m-m relationship between A and B entities which are in 
  different models, but in same database. I can create and 
 platen this 
  relationship in EOModler and got AB table as well.
 
  AB is in the same DB and only has compound PK like A_ID and B_ID.
 
  When I tried to do saveChanges got this error
 
 
  [2009-12-15 12:6:48 NZDT] WorkerThread0 
  java.lang.NullPointerException
  at
  com
  .webobjects
  .eoaccess
  .EODatabaseContext
  
 .primaryKeyForIntermediateRowFromSourceObject(EODatabaseContext.java: 
  4845)
 
  at
  com
  .webobjects
  .eoaccess
  .EODatabaseContext
  .databaseOperationForIntermediateRowFromSourceObject
  (EODatabaseContext.java:4863)
 
  at
  com
  .webobjects
  .eoaccess
  .EODatabaseContext
  .recordInsertForIntermediateRowFromSourceObject
  (EODatabaseContext.java:4888)
 
  at
  com
  .webobjects
  .eoaccess
  .EODatabaseContext
  .relayAttributesInRelationshipSourceObjectDestinationObject
  (EODatabaseContext.java:4913)
 
  at
  com
  .webobjects
  .eoaccess
  .EODatabaseContext
  .relayAttributesInRelationshipSourceObjectDestinationObjects
  (EODatabaseContext.java:4966)
 
  at
  com
  .webobjects
  .eoaccess
  .EODatabaseContext
  .recordChangesInEditingContext(EODatabaseContext.java:6036)
  at
  com
  .webobjects
  .eocontrol
  .EOObjectStoreCoordinator
  .saveChangesInEditingContext(EOObjectStoreCoordinator.java:373)
 
  at
  com
  .webobjects
  .eocontrol.EOEditingContext.saveChanges(EOEditingContext.java:3192)
 
 
  And I found only updateObjects could has two entities's details and 
  insertedObjects does not print out anything.
 
  Not sure this does not work in across models or something else need 
  setup?
 
  thanks
 
 
 
  Xiaowen(Kevin) Ren
 
  Analyst Programmer
  Channel Applications, Retail Applications ANZ National Bank 
 Ltd Level 
  6 ASB Tower
  2 Hunter Street
  PO Box 1791
  Wellington
  Phone: 04 4365363
  Fax: 04 8028696
 
 
 
 
 
  This e-mail and any attachments to it (the Communication) is, 
  unless otherwise stated, confidential,  may contain 
 copyright material 
  and is for the use only of the intended recipient. If you 
 receive the 
  Communication in error, please notify the sender 
 immediately by return 
  e-mail, delete the Communication and the return e-mail, and do not 
  read, copy, retransmit or otherwise deal with it. Any views 
 expressed 
  in the Communication are those of the individual sender 
 only, unless 
  expressly stated to be those of Australia and New Zealand Banking 
  Group Limited ABN 11 005 357 522, or any of its related entities 
  including ANZ National Bank Limited (together ANZ). ANZ does not 
  accept liability in connection with the integrity of or 
 errors in the 
  Communication, computer virus, data corruption, 
 interference or delay 
  arising from or in respect of the Communication.
 
  ___
  Do not post admin requests to the list. They will be ignored.
  Webobjects-dev mailing list  (Webobjects-dev@lists.apple.com)
  Help/Unsubscribe/Update your Subscription:
  
 http://lists.apple.com/mailman/options/webobjects-dev/chill%40global-v
  illage.net
 
  This email sent to ch...@global-village.net
 
 -- 
 Chuck Hill Senior Consultant / VP Development
 
 Practical WebObjects - for developers who want to increase 
 their overall knowledge of WebObjects or who are trying to 
 solve specific problems.
 http://www.global-village.net/products/practical_webobjects
 
 
 
 
 
 
 
 
 

This e-mail and any attachments to it (the Communication) is, unless 
otherwise stated, confidential,  may contain copyright material and is for the 
use only of the intended recipient. If you receive the Communication in error, 
please notify the sender immediately by return e-mail, delete the Communication 
and the return e-mail, and do not read, copy, retransmit or otherwise deal with 
it. Any views expressed in the Communication are those of the individual sender 
only, unless expressly stated to be those of Australia and New Zealand Banking 
Group Limited ABN 11 005 357 522, or any of its related entities including ANZ 
National Bank Limited (together ANZ). ANZ does not accept liability

Re: NullPointerException in many-many relationship cross two models

2009-12-14 Thread Mike Schrag

same connection dictionary like i think they're the same because the url is 
the same or same like i tested with .equals(..) at runtime and it returns 
true thereby proving they're the same (technically they don't have to be 
exactly .equals, but if they are .equals, they are same-enough)

On Dec 14, 2009, at 10:22 PM, Ren, Kevin wrote:

 
 HI,
 
 I checked that, they are same connection dictionary, because this just moral 
 test example.
 
 Not using WOnder,
 
 Thanks
 
 Kevin
 
 -Original Message-
 From: Chuck Hill [mailto:ch...@global-village.net] 
 Sent: Tuesday, 15 December 2009 4:18 p.m.
 To: Ren, Kevin
 Cc: webobjects-dev@lists.apple.com
 Subject: Re: NullPointerException in many-many relationship 
 cross two models
 
 Both models need to have the exact (and I _do_ mean _exact_) 
 same connection dictionary.  The dictionaries must be 
 equals().  This is most easily accomplished by setting the 
 programatically when the app loads.  Wonder, of course, does this.
 
 
 Chuck
 
 
 On Dec 14, 2009, at 3:30 PM, Ren, Kevin wrote:
 Hi,
 
 There is m-m relationship between A and B entities which are in 
 different models, but in same database. I can create and 
 platen this 
 relationship in EOModler and got AB table as well.
 
 AB is in the same DB and only has compound PK like A_ID and B_ID.
 
 When I tried to do saveChanges got this error
 
 
 [2009-12-15 12:6:48 NZDT] WorkerThread0 
 java.lang.NullPointerException
at
 com
 .webobjects
 .eoaccess
 .EODatabaseContext
 
 .primaryKeyForIntermediateRowFromSourceObject(EODatabaseContext.java: 
 4845)
 
at
 com
 .webobjects
 .eoaccess
 .EODatabaseContext
 .databaseOperationForIntermediateRowFromSourceObject
 (EODatabaseContext.java:4863)
 
at
 com
 .webobjects
 .eoaccess
 .EODatabaseContext
 .recordInsertForIntermediateRowFromSourceObject
 (EODatabaseContext.java:4888)
 
at
 com
 .webobjects
 .eoaccess
 .EODatabaseContext
 .relayAttributesInRelationshipSourceObjectDestinationObject
 (EODatabaseContext.java:4913)
 
at
 com
 .webobjects
 .eoaccess
 .EODatabaseContext
 .relayAttributesInRelationshipSourceObjectDestinationObjects
 (EODatabaseContext.java:4966)
 
at
 com
 .webobjects
 .eoaccess
 .EODatabaseContext
 .recordChangesInEditingContext(EODatabaseContext.java:6036)
at
 com
 .webobjects
 .eocontrol
 .EOObjectStoreCoordinator
 .saveChangesInEditingContext(EOObjectStoreCoordinator.java:373)
 
at
 com
 .webobjects
 .eocontrol.EOEditingContext.saveChanges(EOEditingContext.java:3192)
 
 
 And I found only updateObjects could has two entities's details and 
 insertedObjects does not print out anything.
 
 Not sure this does not work in across models or something else need 
 setup?
 
 thanks
 
 
 
 Xiaowen(Kevin) Ren
 
 Analyst Programmer
 Channel Applications, Retail Applications ANZ National Bank 
 Ltd Level 
 6 ASB Tower
 2 Hunter Street
 PO Box 1791
 Wellington
 Phone: 04 4365363
 Fax: 04 8028696
 
 
 
 
 
 This e-mail and any attachments to it (the Communication) is, 
 unless otherwise stated, confidential,  may contain 
 copyright material 
 and is for the use only of the intended recipient. If you 
 receive the 
 Communication in error, please notify the sender 
 immediately by return 
 e-mail, delete the Communication and the return e-mail, and do not 
 read, copy, retransmit or otherwise deal with it. Any views 
 expressed 
 in the Communication are those of the individual sender 
 only, unless 
 expressly stated to be those of Australia and New Zealand Banking 
 Group Limited ABN 11 005 357 522, or any of its related entities 
 including ANZ National Bank Limited (together ANZ). ANZ does not 
 accept liability in connection with the integrity of or 
 errors in the 
 Communication, computer virus, data corruption, 
 interference or delay 
 arising from or in respect of the Communication.
 
 ___
 Do not post admin requests to the list. They will be ignored.
 Webobjects-dev mailing list  (Webobjects-dev@lists.apple.com)
 Help/Unsubscribe/Update your Subscription:
 
 http://lists.apple.com/mailman/options/webobjects-dev/chill%40global-v
 illage.net
 
 This email sent to ch...@global-village.net
 
 -- 
 Chuck Hill Senior Consultant / VP Development
 
 Practical WebObjects - for developers who want to increase 
 their overall knowledge of WebObjects or who are trying to 
 solve specific problems.
 http://www.global-village.net/products/practical_webobjects
 
 
 
 
 
 
 
 
 
 
 This e-mail and any attachments to it (the Communication) is, unless 
 otherwise stated, confidential,  may contain copyright material and is for 
 the use only of the intended recipient. If you receive the Communication in 
 error, please notify the sender immediately by return e-mail, delete the 
 Communication and the return e-mail, and do not read, copy, retransmit or 
 otherwise deal with it. Any views expressed in the Communication are those

Re: NullPointerException in many-many relationship cross two models

2009-12-14 Thread Guido Neitzer

On 14. Dec. 2009, at 19:22 , Ren, Kevin wrote:

 I checked that, they are same connection dictionary, because this just moral 
 test example.

You need to check them programmatically. As Chuck said - equals() needs to 
return true.

Guido

-- 
http://www.event-s.net

 ___
Do not post admin requests to the list. They will be ignored.
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RE: NullPointerException in many-many relationship cross two models


 Hi,

You are brilliant, guys. It's simple copy/past error in the URL.

jdbc:mysql://156.13.128.28:3306/school?useUnicode=truecharacterEncoding=UTF8

One was using characterEncoding=UTF-8 instead of UTF8, causing this problem.

Now I change them both to UTF8 and works, 

Thanks,


kevin


 -Original Message-
 From: 
 webobjects-dev-bounces+kevin.ren=anz@lists.apple.com 
 [mailto:webobjects-dev-bounces+kevin.ren=anz@lists.apple.c
 om] On Behalf Of Mike Schrag
 Sent: Tuesday, 15 December 2009 4:25 p.m.
 To: Development WebObjects
 Subject: Re: NullPointerException in many-many relationship 
 cross two models
 
 same connection dictionary like i think they're the same 
 because the url is the same or same like i tested with 
 .equals(..) at runtime and it returns true thereby proving 
 they're the same (technically they don't have to be exactly 
 .equals, but if they are .equals, they are same-enough)
 
 On Dec 14, 2009, at 10:22 PM, Ren, Kevin wrote:
 
  
  HI,
  
  I checked that, they are same connection dictionary, 
 because this just moral test example.
  
  Not using WOnder,
  
  Thanks
  
  Kevin
  
  -Original Message-
  From: Chuck Hill [mailto:ch...@global-village.net]
  Sent: Tuesday, 15 December 2009 4:18 p.m.
  To: Ren, Kevin
  Cc: webobjects-dev@lists.apple.com
  Subject: Re: NullPointerException in many-many 
 relationship cross two 
  models
  
  Both models need to have the exact (and I _do_ mean _exact_) same 
  connection dictionary.  The dictionaries must be equals(). 
  This is 
  most easily accomplished by setting the programatically 
 when the app 
  loads.  Wonder, of course, does this.
  
  
  Chuck
  
  
  On Dec 14, 2009, at 3:30 PM, Ren, Kevin wrote:
  Hi,
  
  There is m-m relationship between A and B entities which are in 
  different models, but in same database. I can create and
  platen this
  relationship in EOModler and got AB table as well.
  
  AB is in the same DB and only has compound PK like A_ID and B_ID.
  
  When I tried to do saveChanges got this error
  
  
  [2009-12-15 12:6:48 NZDT] WorkerThread0 
  java.lang.NullPointerException
 at
  com
  .webobjects
  .eoaccess
  .EODatabaseContext
  
  
 .primaryKeyForIntermediateRowFromSourceObject(EODatabaseContext.java: 
  4845)
  
 at
  com
  .webobjects
  .eoaccess
  .EODatabaseContext
  .databaseOperationForIntermediateRowFromSourceObject
  (EODatabaseContext.java:4863)
  
 at
  com
  .webobjects
  .eoaccess
  .EODatabaseContext
  .recordInsertForIntermediateRowFromSourceObject
  (EODatabaseContext.java:4888)
  
 at
  com
  .webobjects
  .eoaccess
  .EODatabaseContext
  .relayAttributesInRelationshipSourceObjectDestinationObject
  (EODatabaseContext.java:4913)
  
 at
  com
  .webobjects
  .eoaccess
  .EODatabaseContext
  .relayAttributesInRelationshipSourceObjectDestinationObjects
  (EODatabaseContext.java:4966)
  
 at
  com
  .webobjects
  .eoaccess
  .EODatabaseContext
  .recordChangesInEditingContext(EODatabaseContext.java:6036)
 at
  com
  .webobjects
  .eocontrol
  .EOObjectStoreCoordinator
  .saveChangesInEditingContext(EOObjectStoreCoordinator.java:373)
  
 at
  com
  .webobjects
  
 .eocontrol.EOEditingContext.saveChanges(EOEditingContext.java:3192)
  
  
  And I found only updateObjects could has two entities's 
 details and 
  insertedObjects does not print out anything.
  
  Not sure this does not work in across models or something 
 else need 
  setup?
  
  thanks
  
  
  
  Xiaowen(Kevin) Ren
  
  Analyst Programmer
  Channel Applications, Retail Applications ANZ National Bank
  Ltd Level
  6 ASB Tower
  2 Hunter Street
  PO Box 1791
  Wellington
  Phone: 04 4365363
  Fax: 04 8028696
  
  
  
  
  
  This e-mail and any attachments to it (the Communication) is, 
  unless otherwise stated, confidential,  may contain
  copyright material
  and is for the use only of the intended recipient. If you
  receive the
  Communication in error, please notify the sender
  immediately by return
  e-mail, delete the Communication and the return e-mail, 
 and do not 
  read, copy, retransmit or otherwise deal with it. Any views
  expressed
  in the Communication are those of the individual sender
  only, unless
  expressly stated to be those of Australia and New Zealand Banking 
  Group Limited ABN 11 005 357 522, or any of its related entities 
  including ANZ National Bank Limited (together ANZ). ANZ 
 does not 
  accept liability in connection with the integrity of or
  errors in the
  Communication, computer virus, data corruption,
  interference or delay
  arising from or in respect of the Communication.
  
  ___
  Do not post admin requests to the list. They will be ignored.
  Webobjects-dev mailing list  (Webobjects-dev@lists.apple.com)
  Help/Unsubscribe/Update your Subscription:
  
  
 http://lists.apple.com/mailman/options/webobjects-dev/chill%40global-
  v
  illage.net

Re: NullPointerException in many-many relationship cross two models

2009-12-14 Thread Chuck Hill



On Dec 14, 2009, at 7:37 PM, Ren, Kevin wrote:



Hi,

You are brilliant, guys. It's simple copy/past error in the URL.

jdbc:mysql://156.13.128.28:3306/school? 
useUnicode=truecharacterEncoding=UTF8


One was using characterEncoding=UTF-8 instead of UTF8, causing this  
problem.


Now I change them both to UTF8 and works,



UTF-8 is the correct form


Chuck



-Original Message-
From:
webobjects-dev-bounces+kevin.ren=anz@lists.apple.com
[mailto:webobjects-dev-bounces+kevin.ren=anz@lists.apple.c
om] On Behalf Of Mike Schrag
Sent: Tuesday, 15 December 2009 4:25 p.m.
To: Development WebObjects
Subject: Re: NullPointerException in many-many relationship
cross two models

same connection dictionary like i think they're the same
because the url is the same or same like i tested with
.equals(..) at runtime and it returns true thereby proving
they're the same (technically they don't have to be exactly
.equals, but if they are .equals, they are same-enough)

On Dec 14, 2009, at 10:22 PM, Ren, Kevin wrote:



HI,

I checked that, they are same connection dictionary,

because this just moral test example.


Not using WOnder,

Thanks

Kevin


-Original Message-
From: Chuck Hill [mailto:ch...@global-village.net]
Sent: Tuesday, 15 December 2009 4:18 p.m.
To: Ren, Kevin
Cc: webobjects-dev@lists.apple.com
Subject: Re: NullPointerException in many-many

relationship cross two

models

Both models need to have the exact (and I _do_ mean _exact_) same
connection dictionary.  The dictionaries must be equals().

This is

most easily accomplished by setting the programatically

when the app

loads.  Wonder, of course, does this.


Chuck


On Dec 14, 2009, at 3:30 PM, Ren, Kevin wrote:

Hi,

There is m-m relationship between A and B entities which are in
different models, but in same database. I can create and

platen this

relationship in EOModler and got AB table as well.

AB is in the same DB and only has compound PK like A_ID and B_ID.

When I tried to do saveChanges got this error


[2009-12-15 12:6:48 NZDT] WorkerThread0
java.lang.NullPointerException
  at
com
.webobjects
.eoaccess
.EODatabaseContext




.primaryKeyForIntermediateRowFromSourceObject(EODatabaseContext.java:

4845)

  at
com
.webobjects
.eoaccess
.EODatabaseContext
.databaseOperationForIntermediateRowFromSourceObject
(EODatabaseContext.java:4863)

  at
com
.webobjects
.eoaccess
.EODatabaseContext
.recordInsertForIntermediateRowFromSourceObject
(EODatabaseContext.java:4888)

  at
com
.webobjects
.eoaccess
.EODatabaseContext
.relayAttributesInRelationshipSourceObjectDestinationObject
(EODatabaseContext.java:4913)

  at
com
.webobjects
.eoaccess
.EODatabaseContext
.relayAttributesInRelationshipSourceObjectDestinationObjects
(EODatabaseContext.java:4966)

  at
com
.webobjects
.eoaccess
.EODatabaseContext
.recordChangesInEditingContext(EODatabaseContext.java:6036)
  at
com
.webobjects
.eocontrol
.EOObjectStoreCoordinator
.saveChangesInEditingContext(EOObjectStoreCoordinator.java:373)

  at
com
.webobjects


.eocontrol.EOEditingContext.saveChanges(EOEditingContext.java:3192)



And I found only updateObjects could has two entities's

details and

insertedObjects does not print out anything.

Not sure this does not work in across models or something

else need

setup?

thanks



Xiaowen(Kevin) Ren

Analyst Programmer
Channel Applications, Retail Applications ANZ National Bank

Ltd Level

6 ASB Tower
2 Hunter Street
PO Box 1791
Wellington
Phone: 04 4365363
Fax: 04 8028696





This e-mail and any attachments to it (the Communication) is,
unless otherwise stated, confidential,  may contain

copyright material

and is for the use only of the intended recipient. If you

receive the

Communication in error, please notify the sender

immediately by return

e-mail, delete the Communication and the return e-mail,

and do not

read, copy, retransmit or otherwise deal with it. Any views

expressed

in the Communication are those of the individual sender

only, unless

expressly stated to be those of Australia and New Zealand Banking
Group Limited ABN 11 005 357 522, or any of its related entities
including ANZ National Bank Limited (together ANZ). ANZ

does not

accept liability in connection with the integrity of or

errors in the

Communication, computer virus, data corruption,

interference or delay

arising from or in respect of the Communication.

___
Do not post admin requests to the list. They will be ignored.
Webobjects-dev mailing list  (Webobjects-dev@lists.apple.com)
Help/Unsubscribe/Update your Subscription:




http://lists.apple.com/mailman/options/webobjects-dev/chill%40global-

v

illage.net

This email sent to ch...@global-village.net


--
Chuck Hill Senior Consultant / VP Development

Practical WebObjects - for developers who want to increase their
overall knowledge of WebObjects or who are trying to solve

specific

problems.
http

RE: NullPointerException in many-many relationship cross two models


 yes, this confused me. In my.cnf default-character-set=utf8

I did google search someone said  characterEncoding=UTF8 working, others said 
characterEncoding=UTF-8.

Not sure which one is right?


Kevin

 -Original Message-
 From: Chuck Hill [mailto:ch...@global-village.net] 
 Sent: Tuesday, 15 December 2009 4:42 p.m.
 To: Ran, Kevin
 Cc: webobjects-dev@lists.apple.com
 Subject: Re: NullPointerException in many-many relationship 
 cross two models
 
 
 On Dec 14, 2009, at 7:37 PM, Ren, Kevin wrote:
 
 
  Hi,
 
  You are brilliant, guys. It's simple copy/past error in the URL.
 
  jdbc:mysql://156.13.128.28:3306/school? 
  useUnicode=truecharacterEncoding=UTF8
 
  One was using characterEncoding=UTF-8 instead of UTF8, causing this 
  problem.
 
  Now I change them both to UTF8 and works,
 
 
 UTF-8 is the correct form
 
 
 Chuck
 
 
  -Original Message-
  From:
  webobjects-dev-bounces+kevin.ren=anz@lists.apple.com
  [mailto:webobjects-dev-bounces+kevin.ren=anz@lists.apple.c
  om] On Behalf Of Mike Schrag
  Sent: Tuesday, 15 December 2009 4:25 p.m.
  To: Development WebObjects
  Subject: Re: NullPointerException in many-many 
 relationship cross two 
  models
 
  same connection dictionary like i think they're the same 
 because the 
  url is the same or same like i tested with
  .equals(..) at runtime and it returns true thereby proving they're 
  the same (technically they don't have to be exactly 
 .equals, but if 
  they are .equals, they are same-enough)
 
  On Dec 14, 2009, at 10:22 PM, Ren, Kevin wrote:
 
 
  HI,
 
  I checked that, they are same connection dictionary,
  because this just moral test example.
 
  Not using WOnder,
 
  Thanks
 
  Kevin
 
  -Original Message-
  From: Chuck Hill [mailto:ch...@global-village.net]
  Sent: Tuesday, 15 December 2009 4:18 p.m.
  To: Ren, Kevin
  Cc: webobjects-dev@lists.apple.com
  Subject: Re: NullPointerException in many-many
  relationship cross two
  models
 
  Both models need to have the exact (and I _do_ mean 
 _exact_) same 
  connection dictionary.  The dictionaries must be equals().
  This is
  most easily accomplished by setting the programatically
  when the app
  loads.  Wonder, of course, does this.
 
 
  Chuck
 
 
  On Dec 14, 2009, at 3:30 PM, Ren, Kevin wrote:
  Hi,
 
  There is m-m relationship between A and B entities which are in 
  different models, but in same database. I can create and
  platen this
  relationship in EOModler and got AB table as well.
 
  AB is in the same DB and only has compound PK like A_ID 
 and B_ID.
 
  When I tried to do saveChanges got this error
 
 
  [2009-12-15 12:6:48 NZDT] WorkerThread0 
  java.lang.NullPointerException
at
  com
  .webobjects
  .eoaccess
  .EODatabaseContext
 
 
  
 .primaryKeyForIntermediateRowFromSourceObject(EODatabaseContext.java:
  4845)
 
at
  com
  .webobjects
  .eoaccess
  .EODatabaseContext
  .databaseOperationForIntermediateRowFromSourceObject
  (EODatabaseContext.java:4863)
 
at
  com
  .webobjects
  .eoaccess
  .EODatabaseContext
  .recordInsertForIntermediateRowFromSourceObject
  (EODatabaseContext.java:4888)
 
at
  com
  .webobjects
  .eoaccess
  .EODatabaseContext
  .relayAttributesInRelationshipSourceObjectDestinationObject
  (EODatabaseContext.java:4913)
 
at
  com
  .webobjects
  .eoaccess
  .EODatabaseContext
  .relayAttributesInRelationshipSourceObjectDestinationObjects
  (EODatabaseContext.java:4966)
 
at
  com
  .webobjects
  .eoaccess
  .EODatabaseContext
  .recordChangesInEditingContext(EODatabaseContext.java:6036)
at
  com
  .webobjects
  .eocontrol
  .EOObjectStoreCoordinator
  .saveChangesInEditingContext(EOObjectStoreCoordinator.java:373)
 
at
  com
  .webobjects
 
  .eocontrol.EOEditingContext.saveChanges(EOEditingContext.java:3192)
 
 
  And I found only updateObjects could has two entities's
  details and
  insertedObjects does not print out anything.
 
  Not sure this does not work in across models or something
  else need
  setup?
 
  thanks
 
 
 
  Xiaowen(Kevin) Ren
 
  Analyst Programmer
  Channel Applications, Retail Applications ANZ National Bank
  Ltd Level
  6 ASB Tower
  2 Hunter Street
  PO Box 1791
  Wellington
  Phone: 04 4365363
  Fax: 04 8028696
 
 
 
 
 
  This e-mail and any attachments to it (the 
 Communication) is, 
  unless otherwise stated, confidential,  may contain
  copyright material
  and is for the use only of the intended recipient. If you
  receive the
  Communication in error, please notify the sender
  immediately by return
  e-mail, delete the Communication and the return e-mail,
  and do not
  read, copy, retransmit or otherwise deal with it. Any views
  expressed
  in the Communication are those of the individual sender
  only, unless
  expressly stated to be those of Australia and New 
 Zealand Banking 
  Group Limited ABN 11 005 357 522, or any of its related 
 entities 
  including ANZ National Bank Limited (together ANZ

Re: NullPointerException in many-many relationship cross two models

2009-12-14 Thread Chuck Hill

For WebObjects and Java, UTF-8.  Not sure what MySquirrelyDatabase  
needs.





On Dec 14, 2009, at 7:51 PM, Ren, Kevin wrote:



yes, this confused me. In my.cnf default-character-set=utf8

I did google search someone said  characterEncoding=UTF8 working,  
others said characterEncoding=UTF-8.


Not sure which one is right?


Kevin


-Original Message-
From: Chuck Hill [mailto:ch...@global-village.net]
Sent: Tuesday, 15 December 2009 4:42 p.m.
To: Ran, Kevin
Cc: webobjects-dev@lists.apple.com
Subject: Re: NullPointerException in many-many relationship
cross two models


On Dec 14, 2009, at 7:37 PM, Ren, Kevin wrote:



Hi,

You are brilliant, guys. It's simple copy/past error in the URL.

jdbc:mysql://156.13.128.28:3306/school?
useUnicode=truecharacterEncoding=UTF8

One was using characterEncoding=UTF-8 instead of UTF8, causing this
problem.

Now I change them both to UTF8 and works,



UTF-8 is the correct form


Chuck



-Original Message-
From:
webobjects-dev-bounces+kevin.ren=anz@lists.apple.com
[mailto:webobjects-dev-bounces+kevin.ren=anz@lists.apple.c
om] On Behalf Of Mike Schrag
Sent: Tuesday, 15 December 2009 4:25 p.m.
To: Development WebObjects
Subject: Re: NullPointerException in many-many

relationship cross two

models

same connection dictionary like i think they're the same

because the

url is the same or same like i tested with
.equals(..) at runtime and it returns true thereby proving they're
the same (technically they don't have to be exactly

.equals, but if

they are .equals, they are same-enough)

On Dec 14, 2009, at 10:22 PM, Ren, Kevin wrote:



HI,

I checked that, they are same connection dictionary,

because this just moral test example.


Not using WOnder,

Thanks

Kevin


-Original Message-
From: Chuck Hill [mailto:ch...@global-village.net]
Sent: Tuesday, 15 December 2009 4:18 p.m.
To: Ren, Kevin
Cc: webobjects-dev@lists.apple.com
Subject: Re: NullPointerException in many-many

relationship cross two

models

Both models need to have the exact (and I _do_ mean

_exact_) same

connection dictionary.  The dictionaries must be equals().

This is

most easily accomplished by setting the programatically

when the app

loads.  Wonder, of course, does this.


Chuck


On Dec 14, 2009, at 3:30 PM, Ren, Kevin wrote:

Hi,

There is m-m relationship between A and B entities which are in
different models, but in same database. I can create and

platen this

relationship in EOModler and got AB table as well.

AB is in the same DB and only has compound PK like A_ID

and B_ID.


When I tried to do saveChanges got this error


[2009-12-15 12:6:48 NZDT] WorkerThread0
java.lang.NullPointerException
 at
com
.webobjects
.eoaccess
.EODatabaseContext






.primaryKeyForIntermediateRowFromSourceObject(EODatabaseContext.java:

4845)

 at
com
.webobjects
.eoaccess
.EODatabaseContext
.databaseOperationForIntermediateRowFromSourceObject
(EODatabaseContext.java:4863)

 at
com
.webobjects
.eoaccess
.EODatabaseContext
.recordInsertForIntermediateRowFromSourceObject
(EODatabaseContext.java:4888)

 at
com
.webobjects
.eoaccess
.EODatabaseContext
.relayAttributesInRelationshipSourceObjectDestinationObject
(EODatabaseContext.java:4913)

 at
com
.webobjects
.eoaccess
.EODatabaseContext
.relayAttributesInRelationshipSourceObjectDestinationObjects
(EODatabaseContext.java:4966)

 at
com
.webobjects
.eoaccess
.EODatabaseContext
.recordChangesInEditingContext(EODatabaseContext.java:6036)
 at
com
.webobjects
.eocontrol
.EOObjectStoreCoordinator
.saveChangesInEditingContext(EOObjectStoreCoordinator.java:373)

 at
com
.webobjects


.eocontrol.EOEditingContext.saveChanges(EOEditingContext.java:3192)



And I found only updateObjects could has two entities's

details and

insertedObjects does not print out anything.

Not sure this does not work in across models or something

else need

setup?

thanks



Xiaowen(Kevin) Ren

Analyst Programmer
Channel Applications, Retail Applications ANZ National Bank

Ltd Level

6 ASB Tower
2 Hunter Street
PO Box 1791
Wellington
Phone: 04 4365363
Fax: 04 8028696





This e-mail and any attachments to it (the

Communication) is,

unless otherwise stated, confidential,  may contain

copyright material

and is for the use only of the intended recipient. If you

receive the

Communication in error, please notify the sender

immediately by return

e-mail, delete the Communication and the return e-mail,

and do not

read, copy, retransmit or otherwise deal with it. Any views

expressed

in the Communication are those of the individual sender

only, unless

expressly stated to be those of Australia and New

Zealand Banking

Group Limited ABN 11 005 357 522, or any of its related

entities

including ANZ National Bank Limited (together ANZ). ANZ

does not

accept liability in connection with the integrity of or

errors in the

Communication, computer virus, data corruption,

interference or delay

arising from or in respect

RE: NullPointerException in many-many relationship cross two models

Cool, thanks

Kevin 

 -Original Message-
 From: Chuck Hill [mailto:ch...@global-village.net] 
 Sent: Tuesday, 15 December 2009 5:00 p.m.
 To: Ren, Kevin
 Cc: webobjects-dev@lists.apple.com
 Subject: Re: NullPointerException in many-many relationship 
 cross two models

 For WebObjects and Java, UTF-8.  Not sure what 
 MySquirrelyDatabase needs.

 On Dec 14, 2009, at 7:51 PM, Ren, Kevin wrote:

  yes, this confused me. In my.cnf default-character-set=utf8

  I did google search someone said  characterEncoding=UTF8 working, 
  others said characterEncoding=UTF-8.

  Not sure which one is right?

  Kevin

  -Original Message-
  From: Chuck Hill [mailto:ch...@global-village.net]
  Sent: Tuesday, 15 December 2009 4:42 p.m.
  To: Ran, Kevin
  Cc: webobjects-dev@lists.apple.com
  Subject: Re: NullPointerException in many-many 
 relationship cross two 
  models

  On Dec 14, 2009, at 7:37 PM, Ren, Kevin wrote:

  Hi,

  You are brilliant, guys. It's simple copy/past error in the URL.

  jdbc:mysql://156.13.128.28:3306/school?
  useUnicode=truecharacterEncoding=UTF8

  One was using characterEncoding=UTF-8 instead of UTF8, 
 causing this 
  problem.

  Now I change them both to UTF8 and works,

  UTF-8 is the correct form

  Chuck

  -Original Message-
  From:
  webobjects-dev-bounces+kevin.ren=anz@lists.apple.com
  [mailto:webobjects-dev-bounces+kevin.ren=anz@lists.apple.c
  om] On Behalf Of Mike Schrag
  Sent: Tuesday, 15 December 2009 4:25 p.m.
  To: Development WebObjects
  Subject: Re: NullPointerException in many-many
  relationship cross two
  models

  same connection dictionary like i think they're the same
  because the
  url is the same or same like i tested with
  .equals(..) at runtime and it returns true thereby 
 proving they're 
  the same (technically they don't have to be exactly
  .equals, but if
  they are .equals, they are same-enough)

  On Dec 14, 2009, at 10:22 PM, Ren, Kevin wrote:

  HI,

  I checked that, they are same connection dictionary,
  because this just moral test example.

  Not using WOnder,

  Thanks

  Kevin

  -Original Message-
  From: Chuck Hill [mailto:ch...@global-village.net]
  Sent: Tuesday, 15 December 2009 4:18 p.m.
  To: Ren, Kevin
  Cc: webobjects-dev@lists.apple.com
  Subject: Re: NullPointerException in many-many
  relationship cross two
  models

  Both models need to have the exact (and I _do_ mean
  _exact_) same
  connection dictionary.  The dictionaries must be equals().
  This is
  most easily accomplished by setting the programatically
  when the app
  loads.  Wonder, of course, does this.

  Chuck

  On Dec 14, 2009, at 3:30 PM, Ren, Kevin wrote:
  Hi,

  There is m-m relationship between A and B entities 
 which are in 
  different models, but in same database. I can create and
  platen this
  relationship in EOModler and got AB table as well.

  AB is in the same DB and only has compound PK like A_ID
  and B_ID.

  When I tried to do saveChanges got this error

  [2009-12-15 12:6:48 NZDT] WorkerThread0 
  java.lang.NullPointerException
   at
  com
  .webobjects
  .eoaccess
  .EODatabaseContext

 .primaryKeyForIntermediateRowFromSourceObject(EODatabaseContext.java:
  4845)

   at
  com
  .webobjects
  .eoaccess
  .EODatabaseContext
  .databaseOperationForIntermediateRowFromSourceObject
  (EODatabaseContext.java:4863)

   at
  com
  .webobjects
  .eoaccess
  .EODatabaseContext
  .recordInsertForIntermediateRowFromSourceObject
  (EODatabaseContext.java:4888)

   at
  com
  .webobjects
  .eoaccess
  .EODatabaseContext
  .relayAttributesInRelationshipSourceObjectDestinationObject
  (EODatabaseContext.java:4913)

   at
  com
  .webobjects
  .eoaccess
  .EODatabaseContext
  .relayAttributesInRelationshipSourceObjectDestinationObjects
  (EODatabaseContext.java:4966)

   at
  com
  .webobjects
  .eoaccess
  .EODatabaseContext
  .recordChangesInEditingContext(EODatabaseContext.java:6036)
   at
  com
  .webobjects
  .eocontrol
  .EOObjectStoreCoordinator

 .saveChangesInEditingContext(EOObjectStoreCoordinator.java:373)

   at
  com
  .webobjects

 .eocontrol.EOEditingContext.saveChanges(EOEditingContext.java:3192)

  And I found only updateObjects could has two entities's
  details and
  insertedObjects does not print out anything.

  Not sure this does not work in across models or something
  else need
  setup?

  thanks

  Xiaowen(Kevin) Ren

  Analyst Programmer
  Channel Applications, Retail Applications ANZ National Bank
  Ltd Level
  6 ASB Tower
  2 Hunter Street
  PO Box 1791
  Wellington
  Phone: 04 4365363
  Fax: 04 8028696

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Re: NullPointerException in many-many relationship cross two models

2009-12-14 Thread Cheong Hee (Gmail)


Hi Kevin

Could you post your code over how object inserted and saved?

Cheers

Cheong Hee

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Re: NullPointerException in many-many relationship cross two models

2009-12-14 Thread Cheong Hee (Gmail)

Thought it is unsolved yet.  Pls ignore.

- Original Message - 
From: Cheong Hee (Gmail) chn...@gmail.com

To: Ren, Kevin kevin@anz.com; webobjects-dev@lists.apple.com
Sent: Tuesday, December 15, 2009 12:26 PM
Subject: Re: NullPointerException in many-many relationship cross two models

Hi Kevin

Could you post your code over how object inserted and saved?

Cheers

Cheong Hee

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Re: NullPointerException in _popComponentFromContext



On Jun 26, 2009, at 12:55 AM, Chuck Hill wrote:



On Jun 25, 2009, at 8:49 PM, Ricardo J. Parada wrote:



Let me correct something I said: the action method is getting  
called!!!  ––  I was just confused the first time I looked.


Anyways, the action method gets called and then that action method  
is calling performParentAction as follows:


  return performParentAction(s);

I did not write that component and I rarely use the  
performParentAction.  But that is returning null.  And that is the  
value my component gets at line#113 and returns the page instead  
(is that bad? should I return the null value instead?).


Returning context.page is best.


Thanks... it's good to know.






Then if I resume execution I get the null pointer exception in  
_popComponentFromContext() in WebObjects.


Any chance the code called by performParentAction(s); is doing  
something bad?


I just noticed that the context().component() right before calling  
performParentAction(s) is my component that triggered the action.  BUT  
then, after I call performParentAction(s) I check the  
context().component() again and I noticed it has changed.  Shouldn't  
it be the same?  Anyways, I'm suspecting that's my problem.  Because  
if I call context()._setCurrentComponent() to set the current  
component back to the one before calling performParentAction(s) then  
the exception no longer happens.


Anyways, this is good progress... If the context current component was  
not supposed to change then I need to find out why it's changing.   
That may require a subclass of the editing context (which Wonder may  
already have) and then implement the _setCurrentComponent() and set a  
breakpoint so that I can see what's changing it.






Chuck




Still investigating...



On Jun 25, 2009, at 10:59 PM, Ricardo J. Parada wrote:



Well here's what I'm seeing... my component determines that it is  
the one that should invoke the action and goes through this code:


// Tell context that an action was performed.  If this is
// not done, the form's default action will be called also.
111:wocontext.setActionInvoked(true);
112:
113:	WOActionResults obj = (WOActionResults)  
valueForBinding(ACTION_BINDING_KEY);

114:if (obj == null) obj = wocontext.page();
115:
116:return obj;

Line # 113 should be calling the action method that is bound to  
the action binding.  That is the method on which I set the  
breakpoint that I was referring to earlier.  The one I never hit.   
So if I don't hit the breakpoint then it's not calling it.  But it  
is calling something else because I see stuff show on the console  
every time I evaluate the expression  
valueForBinding(ACTION_BINDING_KEY).


Anyways, I'll try to investigate what is getting called... or  
maybe take a look at valueForBinding to find out why it's not  
calling the right thing.


If I evaluate the expression  
_associationWithName(ACTION_BINDING_KEY) in the debugger right  
after line #113 I get the following:


(ognl.helperfunction.WOHelperFunctionBindingNameAssociation)  
ognl.helperfunction.WOHelperFunctionBindingNameAssociation:  
keyPath=^action






On Jun 25, 2009, at 10:19 PM, Chuck Hill wrote:



On Jun 25, 2009, at 7:10 PM, Ricardo J. Parada wrote:



On Jun 25, 2009, at 9:53 PM, Chuck Hill wrote:


Sigh...

Does anybody see anything obvious in this stack trace?  I used  
to have this exception ages ago and it was obscure.  I don't  
recall what ended up fixing it exactly but now that I moved my  
application to Wonder I'm running into this again and haven't  
figured out yet why or how to fix it.  Any ideas??  
Pleeeassee!!  :-)


I have seen this before.  It is caused by  the context not  
knowing the current component.  This is hitting some action  
method.  What is it returning?


I see in the stack trace that it's going through the  
invokeAction phase.  But the action method that is supposed to  
get called has not been called yet.  I set a breakpoint in the  
method that it's supposed to get called but I hit the exception  
first and the action method never gets called.


I'll set a breakpoint in the invokeAction() method of the  
component that is supposed to call the action to see how things  
look from there.


From what I can tell the _popComponentFromContext() gets the  
current component from the context and then to message it and  
throws the null pointer exception because the current component  
is null for some obscure reason.


Anyways, I'm taking a look at the invokeAction in my component.


I really ought to take better notes when I hit things like this.

Chuck

--
Chuck Hill Senior Consultant / VP Development

Practical WebObjects - for developers who want to increase their  
overall knowledge of WebObjects or who are trying to solve  
specific problems.

http://www.global-village.net/products/practical_webobjects








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Re: NullPointerException in _popComponentFromContext -- [WORKAROUND]



My theory is that the performParentAction() changes the context's  
current component with the intention to restore it afterwards.  But an  
exception may be occurring in a section of the code in  
performParentAction() which is not properly wrapped with an exception  
handler and so we end up with the wrong current component in the  
context.


Does it make sense?

With that theory in mind I wrote the following workaround which seems  
to be working.  The method below is the invokeAction() method in my  
component that detects it should call the action method.  Calling that  
action method goes through a whole lot of stuff and eventually calls  
performParentAction() which seems to be messing up the current  
component in the context because it's not catching an exception.  And  
the exception may be getting caught at a higher level but at this  
point we have a messed up current component.  The workaround is to  
read the current component before calling the action and then restore  
it afterwards as shown here in my component's invokeAction().  Notice  
the finally clause restoring the current component :



public WOActionResults invokeAction(WORequest worequest, WOContext  
wocontext)

{   

	... some code omitted here which detects whether this component is  
the one that should call the action

...  if so the shouldInvokeAction flag gets set

if (shouldInvokeAction) {
// Makes sure calling the action does not mess up the current
// component which should remain as this component otherwise
// WebObjects runs into a null pointer exception eventually
// in _popComponentFromContext().

WOComponent current = wocontext.component();
WOActionResults obj = null;
try {
obj = (WOActionResults) 
valueForBinding(ACTION_BINDING_KEY);
} finally {
wocontext._setCurrentComponent(current);
// Tell context that an action was performed.  If this 
is
// not done, the form's default action will be called 
also.
wocontext.setActionInvoked(true);
}

if (obj == null) {
obj = wocontext.page();
}

return obj;
}

// The action wasn't for us so try the child components
	WOActionResults childActionResults = super.invokeAction(worequest,  
wocontext);


return childActionResults;
}



On Jun 26, 2009, at 8:59 AM, Ricardo J. Parada wrote:



On Jun 26, 2009, at 12:55 AM, Chuck Hill wrote:



On Jun 25, 2009, at 8:49 PM, Ricardo J. Parada wrote:



Let me correct something I said: the action method is getting  
called!!!  ––  I was just confused the first time I looked.


Anyways, the action method gets called and then that action method  
is calling performParentAction as follows:


 return performParentAction(s);

I did not write that component and I rarely use the  
performParentAction.  But that is returning null.  And that is the  
value my component gets at line#113 and returns the page instead  
(is that bad? should I return the null value instead?).


Returning context.page is best.


Thanks... it's good to know.






Then if I resume execution I get the null pointer exception in  
_popComponentFromContext() in WebObjects.


Any chance the code called by performParentAction(s); is doing  
something bad?


I just noticed that the context().component() right before calling  
performParentAction(s) is my component that triggered the action.   
BUT then, after I call performParentAction(s) I check the  
context().component() again and I noticed it has changed.  Shouldn't  
it be the same?  Anyways, I'm suspecting that's my problem.  Because  
if I call context()._setCurrentComponent() to set the current  
component back to the one before calling performParentAction(s) then  
the exception no longer happens.


Anyways, this is good progress... If the context current component  
was not supposed to change then I need to find out why it's  
changing.  That may require a subclass of the editing context (which  
Wonder may already have) and then implement the  
_setCurrentComponent() and set a breakpoint so that I can see what's  
changing it.






Chuck




Still investigating...



On Jun 25, 2009, at 10:59 PM, Ricardo J. Parada wrote:



Well here's what I'm seeing... my component determines that it is  
the one that should invoke the action and goes through this code:


// Tell context that an action was performed.  If this is
// not done, the form's default action will be called also.
111:wocontext.setActionInvoked(true);
112:
113:	WOActionResults obj = (WOActionResults)  
valueForBinding(ACTION_BINDING_KEY);

114:if (obj == null) obj =

Re: NullPointerException in _popComponentFromContext -- [WORKAROUND]

2009-06-26 Thread Mike Schrag

My theory is that the performParentAction() changes the context's  
current component with the intention to restore it afterwards.  But  
an exception may be occurring in a section of the code in  
performParentAction() which is not properly wrapped with an  
exception handler and so we end up with the wrong current component  
in the context.
So it is definitely the case that performParentAction doesn't reset  
the current component in a finally block (which it seems like it  
should). However, it seems to me the only way this can fail is by  
throwing an exception OUT of performParentAction (inside the action  
that was called), which should manifest in YOUR code.  There's not way  
I can see that you don't get a reset of the component without you also  
getting an exception.  Is your code that calls performParentAction  
wrapped in a swallowing catch?


It seems to me you're putting in a really weird hack and hiding the  
root cause of your problem which might just be hanging around to screw  
you again later in another weird way.


I would figure out WHERE and WHY you aren't getting an exception out  
of performParentAction.  You should be able to override  
performParentAction in your base component or in ERXComponent and wrap  
it in an exception handler so you can always see when that dies and  
then you can possibly trace who's swallowing it.


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Re: NullPointerException in _popComponentFromContext -- [WORKAROUND]



On Jun 26, 2009, at 11:23 AM, Mike Schrag wrote:

My theory is that the performParentAction() changes the context's  
current component with the intention to restore it afterwards.  But  
an exception may be occurring in a section of the code in  
performParentAction() which is not properly wrapped with an  
exception handler and so we end up with the wrong current component  
in the context.
So it is definitely the case that performParentAction doesn't reset  
the current component in a finally block (which it seems like it  
should). However, it seems to me the only way this can fail is by  
throwing an exception OUT of performParentAction (inside the action  
that was called), which should manifest in YOUR code.  There's not  
way I can see that you don't get a reset of the component without  
you also getting an exception.  Is your code that calls  
performParentAction wrapped in a swallowing catch?


I'm investigating to see if it's wrapped in a swallowing catch...

And I see performParentAction() seems to be pushing bindings to the  
parent and that is not wrapped in an exception handler I think.




It seems to me you're putting in a really weird hack and hiding the  
root cause of your problem which might just be hanging around to  
screw you again later in another weird way.


I would figure out WHERE and WHY you aren't getting an exception out  
of performParentAction.  You should be able to override  
performParentAction in your base component or in ERXComponent and  
wrap it in an exception handler so you can always see when that dies  
and then you can possibly trace who's swallowing it.




You are right... Good idea... but it may be challenging as the  
performParentAction() calls an action in a parent component and then  
that component also calls performParentAction()... and it's a long  
chain.  So I need to look at all of them to find out...   Hey, I did  
not write those components hehehe...  but it's clear to me it is  
overly complex from the way I usually do things in WebObjects.   And  
it's one of legacy components which seems to be screaming for re- 
design.   :-)


Thanks for the suggestions.. I'll try them to find out WHERE and WHY...

:-)
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Re: NullPointerException in _popComponentFromContext -- [WORKAROUND]

2009-06-26 Thread Mike Schrag

You are right... Good idea... but it may be challenging as the  
performParentAction() calls an action in a parent component and then  
that component also calls performParentAction()... and it's a long  
chain.  So I need to look at all of them to find out...   Hey, I did  
not write those components hehehe...  but it's clear to me it is  
overly complex from the way I usually do things in WebObjects.   And  
it's one of legacy components which seems to be screaming for re- 
design.   :-)


Thanks for the suggestions.. I'll try them to find out WHERE and  
WHY...
The deep call trace is why i suggest putting a try/catch in your base  
component's performParentAction -- so all your components have to pass  
through yours ... SOMEONE in that chain is going to throw out -- it's  
required for this to fail. If it DOESN'T, then there's something else  
going on.


ms

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Re: NullPointerException in _popComponentFromContext -- [WORKAROUND]



On Jun 26, 2009, at 11:39 AM, Mike Schrag wrote:

You are right... Good idea... but it may be challenging as the  
performParentAction() calls an action in a parent component and  
then that component also calls performParentAction()... and it's a  
long chain.  So I need to look at all of them to find out...   Hey,  
I did not write those components hehehe... but it's clear to me it  
is overly complex from the way I usually do things in WebObjects.
And it's one of legacy components which seems to be screaming for  
re-design.   :-)


Thanks for the suggestions.. I'll try them to find out WHERE and  
WHY...
The deep call trace is why i suggest putting a try/catch in your  
base component's performParentAction -- so all your components have  
to pass through yours ... SOMEONE in that chain is going to throw  
out -- it's required for this to fail. If it DOESN'T, then there's  
something else going on.


Yep... working on this... I'm first making sure all the components  
extend my base class MPVWOComponent (who is a subclass of ERXComponent).


then I'll put the performParentAction() in MPVWOComponent to try to  
catch the exception assuming it's happening.


Thanks



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Re: NullPointerException in _popComponentFromContext -- [WORKAROUND]



Wow... I did a search through all our projects for places where we  
call performParentAction() and I found a whole bunch of component that  
are catching and swallowing like this:


try {
String s = (String) valueForBinding(parentAction);
if (s != null) {
performParentAction(s);
}
} catch (Exception e) {
session.addUserMessagesFromException(e);
return null;
}

Bad huh?  :-)

I'm changing all of these to extend the base class MPVWOComponent and  
then I should know which is getting the exception and what it is!




On Jun 26, 2009, at 11:49 AM, Ricardo J. Parada wrote:



On Jun 26, 2009, at 11:39 AM, Mike Schrag wrote:

You are right... Good idea... but it may be challenging as the  
performParentAction() calls an action in a parent component and  
then that component also calls performParentAction()... and it's a  
long chain.  So I need to look at all of them to find out...
Hey, I did not write those components hehehe... but it's clear to  
me it is overly complex from the way I usually do things in  
WebObjects.   And it's one of legacy components which seems to be  
screaming for re-design.   :-)


Thanks for the suggestions.. I'll try them to find out WHERE and  
WHY...
The deep call trace is why i suggest putting a try/catch in your  
base component's performParentAction -- so all your components have  
to pass through yours ... SOMEONE in that chain is going to throw  
out -- it's required for this to fail. If it DOESN'T, then there's  
something else going on.


Yep... working on this... I'm first making sure all the components  
extend my base class MPVWOComponent (who is a subclass of  
ERXComponent).


then I'll put the performParentAction() in MPVWOComponent to try to  
catch the exception assuming it's happening.


Thanks



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Re: NullPointerException in _popComponentFromContext -- [WORKAROUND]



Good news and bad news I guess.  The good news is that I identified  
all the components that are wrapping the call to performParentAction()  
with a swallowing exception handler.  I modified them all to extend  
my base component (MPVWOComponent).  I added the performParentAction()  
to MPVWOComponent.  Then I set a break point.  It gets called a couple  
of times but never from the swallowers.  In other words, none of the  
swallowers are participating in the action.


So even though the performParentAction in WOComponent changes the  
current component and then calls pushValuesToParent() and  
pullValuesFromParent() without wrapping them in an exception handler,  
I don't think that is the problem in my case.


So my new theory is that there is a swallower somewhere else that  
calls some portion of code (ours or WO's) that changes the current  
component and an exception is thrown without restoring the current  
context and then the exception swallower hides the problem.


Sigh...  LIfe is not easy sometimes!!  :-)



On Jun 26, 2009, at 12:12 PM, Ricardo J. Parada wrote:



Wow... I did a search through all our projects for places where we  
call performParentAction() and I found a whole bunch of component  
that are catching and swallowing like this:


try {
String s = (String) valueForBinding(parentAction);
if (s != null) {
performParentAction(s);
}
} catch (Exception e) {
session.addUserMessagesFromException(e);
return null;
}

Bad huh?  :-)

I'm changing all of these to extend the base class MPVWOComponent  
and then I should know which is getting the exception and what it is!




On Jun 26, 2009, at 11:49 AM, Ricardo J. Parada wrote:



On Jun 26, 2009, at 11:39 AM, Mike Schrag wrote:

You are right... Good idea... but it may be challenging as the  
performParentAction() calls an action in a parent component and  
then that component also calls performParentAction()... and it's  
a long chain.  So I need to look at all of them to find out...
Hey, I did not write those components hehehe... but it's clear to  
me it is overly complex from the way I usually do things in  
WebObjects.   And it's one of legacy components which seems to be  
screaming for re-design.   :-)


Thanks for the suggestions.. I'll try them to find out WHERE and  
WHY...
The deep call trace is why i suggest putting a try/catch in your  
base component's performParentAction -- so all your components  
have to pass through yours ... SOMEONE in that chain is going to  
throw out -- it's required for this to fail. If it DOESN'T, then  
there's something else going on.


Yep... working on this... I'm first making sure all the components  
extend my base class MPVWOComponent (who is a subclass of  
ERXComponent).


then I'll put the performParentAction() in MPVWOComponent to try to  
catch the exception assuming it's happening.


Thanks



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NullPointerException in _popComponentFromContext


Sigh...

Does anybody see anything obvious in this stack trace?  I used to have  
this exception ages ago and it was obscure.  I don't recall what ended  
up fixing it exactly but now that I moved my application to Wonder I'm  
running into this again and haven't figured out yet why or how to fix  
it.  Any ideas??  Pleeeassee!!  :-)


Jun 25 21:40:45 Phynance[58302] WARN  NSLog  -  
com.webobjects.appserver._private.WOComponentRequestHandler:  
Exception occurred while handling request:

java.lang.NullPointerException
[2009-6-25 21:40:45 EDT] WorkerThread8 java.lang.NullPointerException
	at  
com 
.webobjects 
.appserver 
._private 
.WOComponentReference 
._popComponentFromContext(WOComponentReference.java:108)
	at  
com 
.webobjects 
.appserver 
._private.WOComponentReference.invokeAction(WOComponentReference.java: 
128)
	at  
er 
.extensions 
.components 
._private.ERXSwitchComponent.invokeAction(ERXSwitchComponent.java:117)
	at  
com 
.webobjects 
.appserver 
._private.WODynamicGroup.invokeChildrenAction(WODynamicGroup.java:105)
	at  
com 
.webobjects 
.appserver._private.WODynamicGroup.invokeAction(WODynamicGroup.java:115)
	at  
er 
.extensions.components._private.ERXWOForm.invokeAction(ERXWOForm.java: 
180)
	at  
com 
.webobjects 
.appserver 
._private.WODynamicGroup.invokeChildrenAction(WODynamicGroup.java:105)
	at  
com 
.webobjects 
.appserver._private.WODynamicGroup.invokeAction(WODynamicGroup.java:115)
	at  
er 
.extensions 
.components.conditionals.ERXWOTemplate.invokeAction(ERXWOTemplate.java: 
50)
	at  
er 
.extensions 
.components 
.ERXWOComponentContent.invokeAction(ERXWOComponentContent.java:217)
	at  
com 
.webobjects 
.appserver 
._private.WODynamicGroup.invokeChildrenAction(WODynamicGroup.java:105)
	at  
com 
.webobjects 
.appserver._private.WODynamicGroup.invokeAction(WODynamicGroup.java:115)
	at  
com 
.webobjects 
.appserver 
._private.WOComponentContent.invokeAction(WOComponentContent.java:38)
	at  
com 
.webobjects 
.appserver 
._private.WODynamicGroup.invokeChildrenAction(WODynamicGroup.java:105)
	at  
com 
.webobjects 
.appserver._private.WODynamicGroup.invokeAction(WODynamicGroup.java:115)
	at com.webobjects.appserver.WOComponent.invokeAction(WOComponent.java: 
1079)
	at  
er.extensions.components.ERXComponent.invokeAction(ERXComponent.java:92)
	at  
er 
.extensions 
.components 
.ERXNonSynchronizingComponent 
.invokeAction(ERXNonSynchronizingComponent.java:60)
	at  
com 
.webobjects 
.appserver 
._private.WOComponentReference.invokeAction(WOComponentReference.java: 
127)
	at  
com 
.webobjects 
.appserver 
._private.WODynamicGroup.invokeChildrenAction(WODynamicGroup.java:105)
	at  
com 
.webobjects 
.appserver._private.WODynamicGroup.invokeAction(WODynamicGroup.java:115)
	at com.webobjects.appserver.WOComponent.invokeAction(WOComponent.java: 
1079)
	at  
er.extensions.components.ERXComponent.invokeAction(ERXComponent.java:92)
	at  
er 
.extensions 
.components 
.ERXNonSynchronizingComponent 
.invokeAction(ERXNonSynchronizingComponent.java:60)
	at  
com 
.webobjects 
.appserver 
._private.WOComponentReference.invokeAction(WOComponentReference.java: 
127)
	at  
com 
.webobjects 
.appserver 
._private.WODynamicGroup.invokeChildrenAction(WODynamicGroup.java:105)
	at  
com 
.webobjects 
.appserver._private.WODynamicGroup.invokeAction(WODynamicGroup.java:115)
	at com.webobjects.appserver.WOComponent.invokeAction(WOComponent.java: 
1079)
	at  
er.extensions.components.ERXComponent.invokeAction(ERXComponent.java:92)
	at  
er 
.extensions 
.components 
.ERXNonSynchronizingComponent 
.invokeAction(ERXNonSynchronizingComponent.java:60)

at com.webobjects.appserver.WOSession.invokeAction(WOSession.java:1357)
	at com.mpv.webcomponents.MPVWOSession.invokeAction(MPVWOSession.java: 
175)
	at  
com.webobjects.appserver.WOApplication.invokeAction(WOApplication.java: 
1745)
	at  
er 
.extensions 
.appserver 
.ajax.ERXAjaxApplication.invokeAction(ERXAjaxApplication.java:50)
	at  
er 
.extensions.appserver.ERXApplication.invokeAction(ERXApplication.java: 
1657)
	at  
com 
.webobjects 
.appserver 
._private 
.WOComponentRequestHandler 
._dispatchWithPreparedPage(WOComponentRequestHandler.java:206)
	at  
com 
.webobjects 
.appserver 
._private 
.WOComponentRequestHandler 
._dispatchWithPreparedSession(WOComponentRequestHandler.java:298)
	at  
com 
.webobjects 
.appserver 
._private 
.WOComponentRequestHandler 
._dispatchWithPreparedApplication(WOComponentRequestHandler.java:332)
	at  
com 
.webobjects 
.appserver 
._private 
.WOComponentRequestHandler 
._handleRequest(WOComponentRequestHandler.java:369)
	at  
com 
.webobjects 
.appserver 
._private 
.WOComponentRequestHandler 
.handleRequest(WOComponentRequestHandler.java:442)
	at  
com 
.webobjects.appserver.WOApplication.dispatchRequest(WOApplication.java: 
1687)
	at  
er 
.extensions 
.appserver 
.ERXApplication.dispatchRequestImmediately(ERXApplication.java:1772)
	at  
er 
.extensions

Re: NullPointerException in _popComponentFromContext

2009-06-25 Thread Chuck Hill



On Jun 25, 2009, at 6:49 PM, Ricardo J. Parada wrote:


Sigh...

Does anybody see anything obvious in this stack trace?  I used to  
have this exception ages ago and it was obscure.  I don't recall  
what ended up fixing it exactly but now that I moved my application  
to Wonder I'm running into this again and haven't figured out yet  
why or how to fix it.  Any ideas??  Pleeeassee!!  :-)


I have seen this before.  It is caused by  the context not knowing the  
current component.  This is hitting some action method.  What is it  
returning?



Chuck





Jun 25 21:40:45 Phynance[58302] WARN  NSLog  -  
com.webobjects.appserver._private.WOComponentRequestHandler:  
Exception occurred while handling request:

java.lang.NullPointerException
[2009-6-25 21:40:45 EDT] WorkerThread8  
java.lang.NullPointerException
	at  
com 
.webobjects 
.appserver 
._private 
.WOComponentReference 
._popComponentFromContext(WOComponentReference.java:108)
	at  
com 
.webobjects 
.appserver 
._private 
.WOComponentReference.invokeAction(WOComponentReference.java:128)
	at  
er 
.extensions 
.components 
._private.ERXSwitchComponent.invokeAction(ERXSwitchComponent.java:117)
	at  
com 
.webobjects 
.appserver 
._private.WODynamicGroup.invokeChildrenAction(WODynamicGroup.java:105)
	at  
com 
.webobjects 
.appserver._private.WODynamicGroup.invokeAction(WODynamicGroup.java: 
115)
	at  
er 
.extensions 
.components._private.ERXWOForm.invokeAction(ERXWOForm.java:180)
	at  
com 
.webobjects 
.appserver 
._private.WODynamicGroup.invokeChildrenAction(WODynamicGroup.java:105)
	at  
com 
.webobjects 
.appserver._private.WODynamicGroup.invokeAction(WODynamicGroup.java: 
115)
	at  
er 
.extensions 
.components 
.conditionals.ERXWOTemplate.invokeAction(ERXWOTemplate.java:50)
	at  
er 
.extensions 
.components 
.ERXWOComponentContent.invokeAction(ERXWOComponentContent.java:217)
	at  
com 
.webobjects 
.appserver 
._private.WODynamicGroup.invokeChildrenAction(WODynamicGroup.java:105)
	at  
com 
.webobjects 
.appserver._private.WODynamicGroup.invokeAction(WODynamicGroup.java: 
115)
	at  
com 
.webobjects 
.appserver 
._private.WOComponentContent.invokeAction(WOComponentContent.java:38)
	at  
com 
.webobjects 
.appserver 
._private.WODynamicGroup.invokeChildrenAction(WODynamicGroup.java:105)
	at  
com 
.webobjects 
.appserver._private.WODynamicGroup.invokeAction(WODynamicGroup.java: 
115)
	at  
com.webobjects.appserver.WOComponent.invokeAction(WOComponent.java: 
1079)
	at  
er.extensions.components.ERXComponent.invokeAction(ERXComponent.java: 
92)
	at  
er 
.extensions 
.components 
.ERXNonSynchronizingComponent 
.invokeAction(ERXNonSynchronizingComponent.java:60)
	at  
com 
.webobjects 
.appserver 
._private 
.WOComponentReference.invokeAction(WOComponentReference.java:127)
	at  
com 
.webobjects 
.appserver 
._private.WODynamicGroup.invokeChildrenAction(WODynamicGroup.java:105)
	at  
com 
.webobjects 
.appserver._private.WODynamicGroup.invokeAction(WODynamicGroup.java: 
115)
	at  
com.webobjects.appserver.WOComponent.invokeAction(WOComponent.java: 
1079)
	at  
er.extensions.components.ERXComponent.invokeAction(ERXComponent.java: 
92)
	at  
er 
.extensions 
.components 
.ERXNonSynchronizingComponent 
.invokeAction(ERXNonSynchronizingComponent.java:60)
	at  
com 
.webobjects 
.appserver 
._private 
.WOComponentReference.invokeAction(WOComponentReference.java:127)
	at  
com 
.webobjects 
.appserver 
._private.WODynamicGroup.invokeChildrenAction(WODynamicGroup.java:105)
	at  
com 
.webobjects 
.appserver._private.WODynamicGroup.invokeAction(WODynamicGroup.java: 
115)
	at  
com.webobjects.appserver.WOComponent.invokeAction(WOComponent.java: 
1079)
	at  
er.extensions.components.ERXComponent.invokeAction(ERXComponent.java: 
92)
	at  
er 
.extensions 
.components 
.ERXNonSynchronizingComponent 
.invokeAction(ERXNonSynchronizingComponent.java:60)
	at com.webobjects.appserver.WOSession.invokeAction(WOSession.java: 
1357)
	at  
com.mpv.webcomponents.MPVWOSession.invokeAction(MPVWOSession.java:175)
	at  
com 
.webobjects.appserver.WOApplication.invokeAction(WOApplication.java: 
1745)
	at  
er 
.extensions 
.appserver 
.ajax.ERXAjaxApplication.invokeAction(ERXAjaxApplication.java:50)
	at  
er 
.extensions 
.appserver.ERXApplication.invokeAction(ERXApplication.java:1657)
	at  
com 
.webobjects 
.appserver 
._private 
.WOComponentRequestHandler 
._dispatchWithPreparedPage(WOComponentRequestHandler.java:206)
	at  
com 
.webobjects 
.appserver 
._private 
.WOComponentRequestHandler 
._dispatchWithPreparedSession(WOComponentRequestHandler.java:298)
	at  
com 
.webobjects 
.appserver 
._private 
.WOComponentRequestHandler 
._dispatchWithPreparedApplication(WOComponentRequestHandler.java:332)
	at  
com 
.webobjects 
.appserver 
._private 
.WOComponentRequestHandler 
._handleRequest(WOComponentRequestHandler.java:369)
	at  
com 
.webobjects 
.appserver 
._private 
.WOComponentRequestHandler 
.handleRequest(WOComponentRequestHandler.java:442)
	at  
com

Re: NullPointerException in _popComponentFromContext



On Jun 25, 2009, at 9:53 PM, Chuck Hill wrote:


Sigh...

Does anybody see anything obvious in this stack trace?  I used to  
have this exception ages ago and it was obscure.  I don't recall  
what ended up fixing it exactly but now that I moved my application  
to Wonder I'm running into this again and haven't figured out yet  
why or how to fix it.  Any ideas?? Pleeeassee!!  :-)


I have seen this before.  It is caused by  the context not knowing  
the current component.  This is hitting some action method.  What is  
it returning?


I see in the stack trace that it's going through the invokeAction  
phase.  But the action method that is supposed to get called has not  
been called yet.  I set a breakpoint in the method that it's supposed  
to get called but I hit the exception first and the action method  
never gets called.


I'll set a breakpoint in the invokeAction() method of the component  
that is supposed to call the action to see how things look from there.


From what I can tell the _popComponentFromContext() gets the current  
component from the context and then to message it and throws the null  
pointer exception because the current component is null for some  
obscure reason.


Anyways, I'm taking a look at the invokeAction in my component.



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Re: NullPointerException in _popComponentFromContext

2009-06-25 Thread Chuck Hill



On Jun 25, 2009, at 7:10 PM, Ricardo J. Parada wrote:



On Jun 25, 2009, at 9:53 PM, Chuck Hill wrote:


Sigh...

Does anybody see anything obvious in this stack trace?  I used to  
have this exception ages ago and it was obscure.  I don't recall  
what ended up fixing it exactly but now that I moved my  
application to Wonder I'm running into this again and haven't  
figured out yet why or how to fix it.  Any ideas?? Pleeeassee!!  :-)


I have seen this before.  It is caused by  the context not knowing  
the current component.  This is hitting some action method.  What  
is it returning?


I see in the stack trace that it's going through the invokeAction  
phase.  But the action method that is supposed to get called has not  
been called yet.  I set a breakpoint in the method that it's  
supposed to get called but I hit the exception first and the action  
method never gets called.


I'll set a breakpoint in the invokeAction() method of the component  
that is supposed to call the action to see how things look from there.


From what I can tell the _popComponentFromContext() gets the current  
component from the context and then to message it and throws the  
null pointer exception because the current component is null for  
some obscure reason.


Anyways, I'm taking a look at the invokeAction in my component.


I really ought to take better notes when I hit things like this.

Chuck

--
Chuck Hill Senior Consultant / VP Development

Practical WebObjects - for developers who want to increase their  
overall knowledge of WebObjects or who are trying to solve specific  
problems.

http://www.global-village.net/products/practical_webobjects






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Re: NullPointerException in _popComponentFromContext



Well here's what I'm seeing... my component determines that it is the  
one that should invoke the action and goes through this code:


// Tell context that an action was performed.  If this is
// not done, the form's default action will be called also.
111:wocontext.setActionInvoked(true);
112:
113:	WOActionResults obj = (WOActionResults)  
valueForBinding(ACTION_BINDING_KEY);

114:if (obj == null) obj = wocontext.page();
115:
116:return obj;

Line # 113 should be calling the action method that is bound to the  
action binding.  That is the method on which I set the breakpoint that  
I was referring to earlier.  The one I never hit.  So if I don't hit  
the breakpoint then it's not calling it.  But it is calling something  
else because I see stuff show on the console every time I evaluate the  
expression valueForBinding(ACTION_BINDING_KEY).


Anyways, I'll try to investigate what is getting called... or maybe  
take a look at valueForBinding to find out why it's not calling the  
right thing.


If I evaluate the expression _associationWithName(ACTION_BINDING_KEY)  
in the debugger right after line #113 I get the following:


(ognl.helperfunction.WOHelperFunctionBindingNameAssociation)  
ognl.helperfunction.WOHelperFunctionBindingNameAssociation:  
keyPath=^action






On Jun 25, 2009, at 10:19 PM, Chuck Hill wrote:



On Jun 25, 2009, at 7:10 PM, Ricardo J. Parada wrote:



On Jun 25, 2009, at 9:53 PM, Chuck Hill wrote:


Sigh...

Does anybody see anything obvious in this stack trace?  I used to  
have this exception ages ago and it was obscure.  I don't recall  
what ended up fixing it exactly but now that I moved my  
application to Wonder I'm running into this again and haven't  
figured out yet why or how to fix it.  Any ideas??  
Pleeeassee!!  :-)


I have seen this before.  It is caused by  the context not knowing  
the current component.  This is hitting some action method.  What  
is it returning?


I see in the stack trace that it's going through the invokeAction  
phase.  But the action method that is supposed to get called has  
not been called yet.  I set a breakpoint in the method that it's  
supposed to get called but I hit the exception first and the action  
method never gets called.


I'll set a breakpoint in the invokeAction() method of the component  
that is supposed to call the action to see how things look from  
there.


From what I can tell the _popComponentFromContext() gets the  
current component from the context and then to message it and  
throws the null pointer exception because the current component is  
null for some obscure reason.


Anyways, I'm taking a look at the invokeAction in my component.


I really ought to take better notes when I hit things like this.

Chuck

--
Chuck Hill Senior Consultant / VP Development

Practical WebObjects - for developers who want to increase their  
overall knowledge of WebObjects or who are trying to solve specific  
problems.

http://www.global-village.net/products/practical_webobjects








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Re: NullPointerException in _popComponentFromContext