Re: Map iterate problem Application Scope

[Mark Ayad]

Map iterate problemThe iterate examples seem to use Maps that are created in the 
PageScope. In the case of a Map-backed action form.

However what I'm trying to do is iterate over a an Object placed in the application 
scope: a.k.a. I can't seem to get the logic:iterate to work even though the bean mm 
is sitting quite hapily in the application scope.

servlet.getServletContext().setAttribute(mm, new MultiMap());

public class MultiMap
{
 public Map values = new HashMap();

public void setValue(String key, Object value) {
values.put(key, value);
}

public Object getValue(String key) {
return values.get(key);
}
   
public MultiMap()
{  
 values.put(foo,bar);
}
   
public Map getMap()
{
 return values ;
}
}

Is the possible ?

Re: Map iterate problem Application Scope

[Robert]

I actually had this problem with other objects (not necessarily maps) 
and it turned out that the logic and bean tags would only find my 
objects if I set them in the pageContext object, meaning I would have to 
do this in my JSP:


% pageContext.setAttribute( mm 
pageContext.getServletContext().getAttribute(mm), 
pageContext.APPLICATION ); %
...

It sucked, but it worked. Essentially the tags were always looking in 
the pageContext object and not the servletContext. Or maybe it was a 
problem with the pageContext implementation in Tomcat, don't know which.

For JavaBeans, I could use a jsp:useBean tag that pointed to my bean 
and the tags would find it as well. So if I set a bean in session / 
request scope, say in an Action, I would have to use a jsp:useBean tag 
on the page that defined the bean that was already there.

Robert

Mark Ayad wrote:

Map iterate problemThe iterate examples seem to use Maps that are created in the PageScope. In the case of a Map-backed action form.

However what I'm trying to do is iterate over a an Object placed in the application scope: a.k.a. I can't seem to get the logic:iterate to work even though the bean mm is sitting quite hapily in the application scope.

servlet.getServletContext().setAttribute(mm, new MultiMap());

public class MultiMap
{
public Map values = new HashMap();

   public void setValue(String key, Object value) {
   values.put(key, value);
   }

   public Object getValue(String key) {
   return values.get(key);
   }
  
   public MultiMap()
   {  
values.put(foo,bar);
   }
  
   public Map getMap()
   {
return values ;
   }
}

Is the possible ?


 



--
To unsubscribe, e-mail:   mailto:struts-user-unsubscribe;jakarta.apache.org
For additional commands, e-mail: mailto:struts-user-help;jakarta.apache.org

Re: Map iterate problem Application Scope

[Mark Ayad]

One of thoes afternoons it all works now, I've attatche all the code

urgh ?

- Original Message -
From: Vinh Tran [EMAIL PROTECTED]
To: Struts Users Mailing List [EMAIL PROTECTED]
Sent: Tuesday, November 12, 2002 6:15 PM
Subject: RE: Map iterate problem


 Mark:

 Please include code otherwise I can't help youand include the error
you
 are receiving.

 Vinh

 -Original Message-
 From: Mark Ayad [mailto:mark;javamark.com]
 Sent: Tuesday, November 12, 2002 11:05 AM
 To: Struts Users Mailing List; [EMAIL PROTECTED]
 Subject: Re: Map iterate problem


 Map iterate problemSorry that doesn't work

 From the documentation:

 id

 The name of a page scope JSP bean that will contain the current element of
 the collection on each iteration.

 but my bean is stored in the application scope:

 Unless my problem lies in my iterate tag ?
   - Original Message -
   From: Vinh Tran
   To: Struts Users Mailing List ; [EMAIL PROTECTED]
   Sent: Tuesday, November 12, 2002 4:45 PM
   Subject: RE: Map iterate problem


   sorry...forgot the property attribute...

   bean:define id=yourMap property=mymap name=mm
scope=application
 -Original Message-
 From: Vinh Tran [mailto:vinht;processintelligence.com]
 Sent: Tuesday, November 12, 2002 10:40 AM
 To: Struts Users Mailing List
 Subject: RE: Map iterate problem


 Or you can define your Map from MultiMap

 (Note: some changes made to MutiMap)
 public class MultiMap
 {
  public Map mymap = new HashMap();

 public void setValue(String key, Object value) {
 values.put(key, value);
 }

 public Object getValue(String key) {
 return values.get(key);
 }

 public MultiMap()


  values.put(foo,bar);

  values.put(you,me);
 }

 public Map getMyMap()
 {
  return myMap;
 }
 }

 then.bean:define id=yourMap name=mm scope=application

 then simply iterate through yourMapHope this works.Vinh
   -Original Message-
   From: Hookom, Jacob John [mailto:hookomjj;uwec.edu]
   Sent: Tuesday, November 12, 2002 10:19 AM
   To: Struts Users Mailing List
   Subject: RE: Map iterate problem


   Your multimap must be an instance of java.util.Map to get
 logic:iterate to recognize/handle it properly.
 -Original Message-
 From: Mark Ayad [mailto:mark;javamark.com]
 Sent: Tue 11/12/2002 9:17 AM
 To: Struts Users Mailing List
 Cc:
 Subject: Map iterate problem


 I have a Map which I place into the Application Context using the
 following line in a plugin init:

 servlet.getServletContext().setAttribute(mm, new MultiMap());

 The map is:

 public class MultiMap
 {
  public Map values = new HashMap();

 public void setValue(String key, Object value) {
 values.put(key, value);
 }

 public Object getValue(String key) {
 return values.get(key);
 }

 public MultiMap()


  values.put(foo,bar);

  values.put(you,me);
 }

 public Map getMap()
 {
  return values ;
 }
 }

 In the JSP I try to iterate over this map using (which doesn't
throw
 any exceptions):

  logic:iterate id=map name=mm property=map
  /logic:iterate

 However When I try to use

 bean:write name=mm property=key/

 I get:

 javax.servlet.jsp.JspException: No getter method for property key
of
 bean
 mm

 What am I missing ?







 --
--
 --


   --
   To unsubscribe, e-mail:
 mailto:struts-user-unsubscribe;jakarta.apache.org
   For additional commands, e-mail:
 mailto:struts-user-help;jakarta.apache.org


 --
 To unsubscribe, e-mail:
mailto:struts-user-unsubscribe;jakarta.apache.org
 For additional commands, e-mail:
mailto:struts-user-help;jakarta.apache.org





MemoryPlugin.java
Description: java/


MultiMap.java
Description: java/


test.jsp
Description: Binary data
--
To unsubscribe, e-mail:   mailto:struts-user-unsubscribe;jakarta.apache.org
For additional commands, e-mail: mailto:struts-user-help;jakarta.apache.org