FW: [pdi]RE: [detail] reload Object ? ? (Problem Cache)

[Reda Benzair]

I think your extent-class declaration cause the problem (Or OJB's 
handling of extent clases).
EmployeeRhBr is an interface that extends Employee interface? 
EmployeeRhBrImpl is an extent of Employee AND EmployeeRhBr. Why? 
Maybe this cause the problem.

Of course this causes the problem : When I call new
Identity(employee505, pb), the detected top level class is not
Employee but EmployeeRhBr.

In my repository every class-descriptor looks like

Repository.xml:
class-descriptor class=dummy.Name
extent-class class-ref=dummy.NameImpl/
 /class-descriptor
 class-descriptor class=dummy.NameImpl table=DUMMY_TABLE
!-- .. --
 /class-descriptor

Name.java:
package dummy;

public interface Name {
//.
}

NameImpl.java
package dummy;

public class NameImpl implements Name {
//.
}



The interface is there to allow proxies.

It works great except when it comes to extents.
In this case, 
*EmployeeRhBr extends Employee = How should I reflect this in the
repository mapping? Do I make some mistake somewhere?

Thank you for all the time you spend on my question! :)



-Original Message-
From: Armin Waibel [mailto:[EMAIL PROTECTED] 
Sent: lundi 29 décembre 2003 16:14
To: OJB Users List
Subject: Re: [detail] reload Object ? ? (Problem Cache)

Hi,

 How can I force refreshing an object? Typically is there a method
like  PB.refreshObject(Object o)? -I know of course this one doesn't
   exist...-

yes, you only can perform a refresh operation on the references. If you
remove an object from the cache, next time you lookup the same 
object (same Identity/PK) OJB materialize a new object instance.

Reda Benzair wrote:
 You're right. Sorry.
 
 The third line is the one I get after I call pb.clearCache(). And it's

 the one I would rather get instead of line 2.
 
I add a similar test case to test suite (see 
...broker.ObjectCacheTest#testObjectCacheDefaultImpl in CVS). This test 
pass without any problems. If the object was removed from cache, the 
object was read from the DB.

 Something I noticed since I posted this message : This sample code
works
 great if the query concerns classical classes instead of Employee : 
 Employee is an extent.


hmm, seems to be an Identity problem. In OJB Identity class two objects 
are equals
a) if they had the same TopLevelClass (in your case interface Employee)
b) and the same PK values (don't know what the PK fields of your 
Employee implementation classes are)

I think your extent-class declaration cause the problem (Or OJB's 
handling of extent clases).
EmployeeRhBr is an interface that extends Employee interface?
EmployeeRhBrImpl is an extent of Employee AND EmployeeRhBr. Why? Maybe
this cause the problem.

regards,
Armin

 class-descriptor class=sj.employee.bean.Employee
   extent-class class-ref=sj.employee.bean.EmployeeImpl/
   extent-class class-ref=sj.employeeRh.bean.EmployeeRhImpl/
   extent-class class-ref=sj.employeeBr.bean.EmployeeBrImpl/
   extent-class
class-ref=sj.employeeRhBr.bean.EmployeeRhBrImpl/
 /class-descriptor
 class-descriptor class=sj.employee.bean.EmployeeImpl
 table=EMPLOYEE
   !-- .. --
 /class-descriptor
 !-- .. --
 class-descriptor class=sj.employee.bean.EmployeeRhBr
   extent-class
 class-ref=sj.employeeRhBr.bean.EmployeeRhBrImpl/
 /class-descriptor
 class-descriptor class=sj.employee.bean.EmployeeRhBrImpl
 table=EMPLOYEE
   !-- .. --
 /class-descriptor
 
 = If I create a new Identity(employee505, pb), the resulting object 
 does not match (.equals + .hascode) the one that already exists in the

 cache : removeFromCache has no effect, wich explains the strange 
 behaviour above. As a workaround, I have removed all extents from my 
 repository but it's a shame...
 
 What should I do?
 
 
 -Original Message-
 From: Armin Waibel [mailto:[EMAIL PROTECTED]
 Sent: mardi 23 décembre 2003 01:42
 To: OJB Users List
 Subject: Re: reload Object ? ? (Problem Cache)
 
 Hi,
 
 in your example only 2 System.out.println(..) lines performed, but 3
 lines are printed?! Do you forget one println() statement?
 
 regards,
 Armin
 
 Reda Benzair wrote:
 
Hi all,

 

I have a -simple?- question about OJB cache:

 

How can I force refreshing an object? Typically is there a method like
 
 
PB.refreshObject(Object o)? -I know of course this one doesn't
 
 exist...-
 
 

To be more precise, I have someting like this:

PersistenceBroker pb =
PersistenceBrokerFactory.createPersistenceBroker(jcd, user,
 
 pass);
 
Criteria crit = new Criteria();
crit.addEqualTo(Id, new Integer(505));
Employee employee505 = (Employee) pb.getObjectByQuery(new
QueryByCriteria(Employee.class, crit));

System.out.println(ID 505 =  + employee505.getName() +   +
employee505);

employee505.setName(MODIFIED  + employee505.getName());
// modified but not stored... should be erased by remove + reload? 
pb.removeFromCache(employee505);
employee505 = (Employee) pb.getObjectByQuery(new 

Bug using insert procedures with include-all-fields flag

[Alexandre Morin]

Hello,

 

I'm using OJB R5 and would like to use the support for using stored
procedures.

 

I'm using the following declaration in my class descriptor

 

insert-procedure name=vmojb.insInstance include-all-fields=true

/insert-procedure

 

It looks like the code doesn't take any parameters into account when the
include-all-fields flag is set.

 

Tracing the code, we get into the InsertProcedureDescriptor constructor
which does

 

this.includeAllFields = includeAllFields;

if (this.includeAllFields) {
this.addArguments(this.getClassDescriptor().getFieldDescriptions());

}

 

But the addArgument just does nothing if the include-all-fields flag is set
:

 

public final void addArgument(ArgumentDescriptor argument)

{

if (!this.getIncludeAllFields())

{

super.addArgument(argument);

}

}

 

I guess the constructor code should set the flag after calling  addArguments
rather than before. 

 

 

Thanks,

 

-Alex

 

Re: FW: [pdi]RE: [detail] reload Object ? ? (Problem Cache)

[Armin Waibel]

Hi,

 It works great except when it comes to extents.
 In this case,
 *EmployeeRhBr extends Employee = How should I reflect this in the
 repository mapping? Do I make some mistake somewhere?
Add EmployeeRhBr as extent to Employee class-descriptor.

Additional you can refactoring your extent handling:

class-descriptor class=sj.employee.bean.Employee
  extent-class class-ref=sj.employeeRh.bean.EmployeeImpl/
  extent-class class-ref=sj.employeeRh.bean.EmployeeRh/
  extent-class class-ref=*more extended Interface*/
  ...
/class-descriptor
class-descriptor class=sj.employee.bean.EmployeeRhBr
   extent-class class-ref=sj.employeeRhBr.bean.EmployeeRhBrImpl/
/class-descriptor
class-descriptor class=dummy.Name
  extent-class class-ref=dummy.NameImpl/
/class-descriptor
only declare EmplyeeImpl and all extended interfaces of Employee, 
because you declare all NameImpl classes in the dummy.Name 
class-descriptor again.
Hope this will work for you - good luck ;-)

regards,
Armin
Reda Benzair wrote:



I think your extent-class declaration cause the problem (Or OJB's 
handling of extent clases).
EmployeeRhBr is an interface that extends Employee interface? 
EmployeeRhBrImpl is an extent of Employee AND EmployeeRhBr. Why? 
Maybe this cause the problem.


Of course this causes the problem : When I call new
Identity(employee505, pb), the detected top level class is not
Employee but EmployeeRhBr.
In my repository every class-descriptor looks like

Repository.xml:
class-descriptor class=dummy.Name
extent-class class-ref=dummy.NameImpl/
 /class-descriptor
 class-descriptor class=dummy.NameImpl table=DUMMY_TABLE
!-- .. --
 /class-descriptor
Name.java:
package dummy;
public interface Name {
//.
}
NameImpl.java
package dummy;
public class NameImpl implements Name {
//.
}


The interface is there to allow proxies.

It works great except when it comes to extents.
In this case, 
*EmployeeRhBr extends Employee = How should I reflect this in the
repository mapping? Do I make some mistake somewhere?

Thank you for all the time you spend on my question! :)



-Original Message-
From: Armin Waibel [mailto:[EMAIL PROTECTED] 
Sent: lundi 29 décembre 2003 16:14
To: OJB Users List
Subject: Re: [detail] reload Object ? ? (Problem Cache)

Hi,

 How can I force refreshing an object? Typically is there a method
like  PB.refreshObject(Object o)? -I know of course this one doesn't
 exist...-


yes, you only can perform a refresh operation on the references. If you
remove an object from the cache, next time you lookup the same 
object (same Identity/PK) OJB materialize a new object instance.

Reda Benzair wrote:

You're right. Sorry.

The third line is the one I get after I call pb.clearCache(). And it's


the one I would rather get instead of line 2.

I add a similar test case to test suite (see 
...broker.ObjectCacheTest#testObjectCacheDefaultImpl in CVS). This test 
pass without any problems. If the object was removed from cache, the 
object was read from the DB.


Something I noticed since I posted this message : This sample code
works

great if the query concerns classical classes instead of Employee : 
Employee is an extent.



hmm, seems to be an Identity problem. In OJB Identity class two objects 
are equals
a) if they had the same TopLevelClass (in your case interface Employee)
b) and the same PK values (don't know what the PK fields of your 
Employee implementation classes are)

I think your extent-class declaration cause the problem (Or OJB's 
handling of extent clases).
EmployeeRhBr is an interface that extends Employee interface?
EmployeeRhBrImpl is an extent of Employee AND EmployeeRhBr. Why? Maybe
this cause the problem.

regards,
Armin

class-descriptor class=sj.employee.bean.Employee
extent-class class-ref=sj.employee.bean.EmployeeImpl/
extent-class class-ref=sj.employeeRh.bean.EmployeeRhImpl/
extent-class class-ref=sj.employeeBr.bean.EmployeeBrImpl/
extent-class
class-ref=sj.employeeRhBr.bean.EmployeeRhBrImpl/

/class-descriptor
class-descriptor class=sj.employee.bean.EmployeeImpl
table=EMPLOYEE
!-- .. --
/class-descriptor
!-- .. --
class-descriptor class=sj.employee.bean.EmployeeRhBr
extent-class
class-ref=sj.employeeRhBr.bean.EmployeeRhBrImpl/
/class-descriptor
class-descriptor class=sj.employee.bean.EmployeeRhBrImpl
table=EMPLOYEE
!-- .. --
/class-descriptor
= If I create a new Identity(employee505, pb), the resulting object 
does not match (.equals + .hascode) the one that already exists in the


cache : removeFromCache has no effect, wich explains the strange 
behaviour above. As a workaround, I have removed all extents from my 
repository but it's a shame...

What should I do?

-Original Message-
From: Armin Waibel [mailto:[EMAIL PROTECTED]
Sent: mardi 23 décembre 2003 01:42
To: OJB Users List
Subject: Re: reload Object ? ? (Problem Cache)
Hi,

in your example only 

Re: Optimistic Locking - simple question

[Thomas Mahler]

Hi Luis,

Luis Cruz wrote:
Hello,

To use the Optimistic Locking feature provided by OJB does the
ACKOPTLOCK column have to be added to every table, or just the ones
defined in the user mapping? 
You have to add a version column only for those classes that have an 
optimistic locking attribute (= column in the db table).

There is no need to modify OJB system tables.

My question is due to the presence
indirection tables not defined in the user mapping.
As the such transparent indirection tables only have columns that are 
part of the primary key, there is no need to have version columns on them.

cu,
Thomas
Thanks in advance,
Luis Cruz
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ClassPersistenceNotCapableException: java.lang.Integer not found ...

[Dirk Manske (Service Respond)]

Hi,

Can someone tell me how to set a reference-descriptor for a foreign key?
Below is an excerpt of my repository-user.xml file. I always get the error
message: ClassPersistenceNotCapableException: java.lang.Integer not found in
repository.xml ... I have no clue what to do. Thx,

Dirk


class-descriptor class=de.activity.entity.ActivityModel
table=TPACTIVITY 
field-descriptor id=1 name=intActivityId column=ACTIVITY_ID
jdbc-type=INTEGER primarykey=true autoincrement=true /
field-descriptor id=2 name=strActivityName
column=ACTIVITY_NAME  jdbc-type=CHAR / 
/class-descriptor


class-descriptor class=de.activity.entity.ModuleModel table=TMODULE 
field-descriptor id=1 name=intModuleAssignedId
column=MODUL_ASSIGNED_ID jdbc-type=INTEGER primarykey=true
autoincrement=true /
field-descriptor id=2 name=intModuleId column=MODUL_ID
jdbc-type=INTEGER /
field-descriptor id=3 name=strModuleExclusive
column=SIMULTAN_WORK jdbc-type=CHAR /
field-descriptor id=4 name=intActivityIdFK column=ACTIVITY_ID
jdbc-type=INTEGER /

reference-descriptor name=intActivityIdFK

class-ref=de.premiere.plato.app.activity.entity.ActivityModel
refresh=true
auto-retrieve=true
foreignkey field-id-ref=4 /
/reference-descriptor
/class-descriptor


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Reloading/Refreshing attributes of an persistent object

[Sebastian]

Since,
all discussions on reloading/refreshing an persistent object somehow 
ended up on different topics. Therefore I'm trying to formulate it as 
simple as possible:
What are the exact steps to refresh the attributes of a single 
persistent object without generating a new instance?
- What settings have to be made in the class descriptor.
- What methods of the persistence broker needs to be called.
- Is it possible at all?
- If it is not possible right now, will there be an option in the 
future and what could be a workaround for the moment.

Thanks in advance,
Sebastian
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RE: ClassPersistenceNotCapableException: java.lang.Integer not found ...

[João Vieira da Luz]

I think your problem is in the name of the reference-descriptor it has the
same name that field 4. Try to change the name and I think it will work
fine.

-Original Message-
From: Dirk Manske (Service Respond)
[mailto:[EMAIL PROTECTED] 
Sent: segunda-feira, 29 de Dezembro de 2003 18:43
To: [EMAIL PROTECTED]
Subject: ClassPersistenceNotCapableException: java.lang.Integer not found
...
Sensitivity: Personal

Hi,

Can someone tell me how to set a reference-descriptor for a foreign key?
Below is an excerpt of my repository-user.xml file. I always get the error
message: ClassPersistenceNotCapableException: java.lang.Integer not found in
repository.xml ... I have no clue what to do. Thx,

Dirk


class-descriptor class=de.activity.entity.ActivityModel
table=TPACTIVITY 
field-descriptor id=1 name=intActivityId column=ACTIVITY_ID
jdbc-type=INTEGER primarykey=true autoincrement=true /
field-descriptor id=2 name=strActivityName
column=ACTIVITY_NAME  jdbc-type=CHAR / 
/class-descriptor


class-descriptor class=de.activity.entity.ModuleModel table=TMODULE 
field-descriptor id=1 name=intModuleAssignedId
column=MODUL_ASSIGNED_ID jdbc-type=INTEGER primarykey=true
autoincrement=true /
field-descriptor id=2 name=intModuleId column=MODUL_ID
jdbc-type=INTEGER /
field-descriptor id=3 name=strModuleExclusive
column=SIMULTAN_WORK jdbc-type=CHAR /
field-descriptor id=4 name=intActivityIdFK column=ACTIVITY_ID
jdbc-type=INTEGER /

reference-descriptor name=intActivityIdFK

class-ref=de.premiere.plato.app.activity.entity.ActivityModel
refresh=true
auto-retrieve=true
foreignkey field-id-ref=4 /
/reference-descriptor
/class-descriptor


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AW: ClassPersistenceNotCapableException: java.lang.Integer not found ...

[Dirk Manske]

Thanks for your answer. When I change the reference name to   I get a
MetadataException which states that it can't find a member  in
de.plato.app.activity.entity.ModuleModel. Of course there is no member 
in this class since I declared all attributes already in the
class-descriptor. Any idea?

Dirk 


-Ursprüngliche Nachricht-
Von: João Vieira da Luz [mailto:[EMAIL PROTECTED] 
Gesendet: Montag, 29. Dezember 2003 19:51
An: 'OJB Users List'
Betreff: RE: ClassPersistenceNotCapableException: java.lang.Integer not
found ...
Vertraulichkeit: Persönlich

I think your problem is in the name of the reference-descriptor it has the
same name that field 4. Try to change the name and I think it will work
fine.

-Original Message-
From: Dirk Manske (Service Respond)
[mailto:[EMAIL PROTECTED]
Sent: segunda-feira, 29 de Dezembro de 2003 18:43
To: [EMAIL PROTECTED]
Subject: ClassPersistenceNotCapableException: java.lang.Integer not found
...
Sensitivity: Personal

Hi,

Can someone tell me how to set a reference-descriptor for a foreign key?
Below is an excerpt of my repository-user.xml file. I always get the error
message: ClassPersistenceNotCapableException: java.lang.Integer not found in
repository.xml ... I have no clue what to do. Thx,

Dirk


class-descriptor class=de.activity.entity.ActivityModel
table=TPACTIVITY 
field-descriptor id=1 name=intActivityId column=ACTIVITY_ID
jdbc-type=INTEGER primarykey=true autoincrement=true /
field-descriptor id=2 name=strActivityName
column=ACTIVITY_NAME  jdbc-type=CHAR / 
/class-descriptor


class-descriptor class=de.activity.entity.ModuleModel table=TMODULE 
field-descriptor id=1 name=intModuleAssignedId
column=MODUL_ASSIGNED_ID jdbc-type=INTEGER primarykey=true
autoincrement=true /
field-descriptor id=2 name=intModuleId column=MODUL_ID
jdbc-type=INTEGER /
field-descriptor id=3 name=strModuleExclusive
column=SIMULTAN_WORK jdbc-type=CHAR /
field-descriptor id=4 name=intActivityIdFK column=ACTIVITY_ID
jdbc-type=INTEGER /

reference-descriptor name=intActivityIdFK

class-ref=de.premiere.plato.app.activity.entity.ActivityModel
refresh=true
auto-retrieve=true
foreignkey field-id-ref=4 /
/reference-descriptor
/class-descriptor


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Ojb samples

[Fabiano Fernandes de Souza]

Please,

Can anyone send to me some resource.xml source code fragment where is
declared the jdbc-connection-descriptor for a postgresql jdbc?

I am a newbie and my bigest problems is to start to use it on my Web
application. I couldnt find any samples how to use it on Web
Applications. Some codes of config files and servlets using the ojb
framework for inserts or queries would be fine.

Thanks.
-- 
Fabiano F. Souza
Tecnologia da Informação
Estudar Soluções em Treinamento Corporativo.
(31) 32849294 - [EMAIL PROTECTED]


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RE: Ojb samples

[Coup, Robert Muir]

I assume you mean repository.xml

If so:
   jdbc-connection-descriptor
jcd-alias=test-database
default-connection=true
platform=PostgreSQL
jdbc-level=2.0
driver=org.postgresql.Driver
protocol=jdbc
subprotocol=postgresql
dbalias=//testserver.auckland.ac.nz/test-database
username=dbusername
password=password

sequence-manager className= 
org.apache.ojb.broker.util.sequence.SequenceManagerNextValImpl
attribute attribute-name=autoNaming attribute-value=false/
/sequence-manager
   /jdbc-connection-descriptor   

This uses Postgre's sequences to generate keys for different extents. See the tutorial 
docs and the sequence manager docs for more information.

Thanks,
Rob :)


-Original Message-
From: Fabiano Fernandes de Souza [mailto:[EMAIL PROTECTED] 
Sent: Tuesday, 30 December 2003 10:22 a.m.
To: [EMAIL PROTECTED]
Subject: Ojb samples


Please,

Can anyone send to me some resource.xml source code fragment where is declared the 
jdbc-connection-descriptor for a postgresql jdbc?

I am a newbie and my bigest problems is to start to use it on my Web application. I 
couldnt find any samples how to use it on Web Applications. Some codes of config files 
and servlets using the ojb framework for inserts or queries would be fine.

Thanks.
-- 
Fabiano F. Souza
Tecnologia da Informação
Estudar Soluções em Treinamento Corporativo.
(31) 32849294 - [EMAIL PROTECTED]


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Re: Reloading/Refreshing attributes of an persistent object

[Sebastian]

Sebastian wrote:
Since,
all discussions on reloading/refreshing an persistent object somehow 
ended up on different topics. Therefore I'm trying to formulate it as 
simple as possible:
What are the exact steps to refresh the attributes of a single 
persistent object without generating a new instance?
- What settings have to be made in the class descriptor.
- What methods of the persistence broker needs to be called.
- Is it possible at all?
- If it is not possible right now, will there be an option in the 
future and what could be a workaround for the moment.

Thanks in advance,
Sebastian
The following seems to work, but I have no clue if it's the best way to 
reload an object:

public void reload(Object obj)
{
  ClassDescriptor cld = pb.getClassDescriptor(obj.getClass());
  cld.setAlwaysRefresh(true);
  pb.getObjectByQuery(new QueryByIdentity(obj));
}
Any comments?

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Re: AW: ClassPersistenceNotCapableException: java.lang.Integer not found ...

[edson . richter]

Look, as you defined

field-descriptor id=4 name=intActivityIdFK column=ACTIVITY_ID
jdbc-type=INTEGER /

you can't have (or you will always get ClassCastException!!!)

reference-descriptor name=intActivityIdFK

class-ref=de.premiere.plato.app.activity.entity.ActivityModel
refresh=true
auto-retrieve=true
foreignkey field-id-ref=4 /
/reference-descriptor

But you can create an attribute intActivityIdFk (of type int) AND activityFk (of type
ActivityModel) in your beean, and your class descriptor should be like (and this 
should work
fine)

class-descriptor class=de.activity.entity.ModuleModel table=TMODULE 
field-descriptor id=1 name=intModuleAssignedId
column=MODUL_ASSIGNED_ID jdbc-type=INTEGER primarykey=true
autoincrement=true /
field-descriptor id=2 name=intModuleId column=MODUL_ID
jdbc-type=INTEGER /
field-descriptor id=3 name=strModuleExclusive
column=SIMULTAN_WORK jdbc-type=CHAR /
field-descriptor id=4 name=intActivityIdFK column=ACTIVITY_ID
jdbc-type=INTEGER /

reference-descriptor name=activityFK

class-ref=de.premiere.plato.app.activity.entity.ActivityModel
refresh=true
auto-retrieve=true
foreignkey field-id-ref=intActivityIdFk /
/reference-descriptor
/class-descriptor




Best regards,

Edson Richter

 Thanks for your answer. When I change the reference name to   I get a
 MetadataException which states that it can't find a member  in
 de.plato.app.activity.entity.ModuleModel. Of course there is no member 
 in this class since I declared all attributes already in the
 class-descriptor. Any idea?

 Dirk


 -Ursprüngliche Nachricht-
 Von: João Vieira da Luz [mailto:[EMAIL PROTECTED]
 Gesendet: Montag, 29. Dezember 2003 19:51
 An: 'OJB Users List'
 Betreff: RE: ClassPersistenceNotCapableException: java.lang.Integer not
 found ...
 Vertraulichkeit: Persönlich

 I think your problem is in the name of the reference-descriptor it has the
 same name that field 4. Try to change the name and I think it will work
 fine.

 -Original Message-
 From: Dirk Manske (Service Respond)
 [mailto:[EMAIL PROTECTED]
 Sent: segunda-feira, 29 de Dezembro de 2003 18:43
 To: [EMAIL PROTECTED]
 Subject: ClassPersistenceNotCapableException: java.lang.Integer not found
 ...
 Sensitivity: Personal

 Hi,

 Can someone tell me how to set a reference-descriptor for a foreign key?
 Below is an excerpt of my repository-user.xml file. I always get the error
 message: ClassPersistenceNotCapableException: java.lang.Integer not found in
 repository.xml ... I have no clue what to do. Thx,

 Dirk


 class-descriptor class=de.activity.entity.ActivityModel
 table=TPACTIVITY 
   field-descriptor id=1 name=intActivityId column=ACTIVITY_ID
 jdbc-type=INTEGER primarykey=true autoincrement=true /
   field-descriptor id=2 name=strActivityName
 column=ACTIVITY_NAME  jdbc-type=CHAR /
 /class-descriptor


 class-descriptor class=de.activity.entity.ModuleModel table=TMODULE 
   field-descriptor id=1 name=intModuleAssignedId
 column=MODUL_ASSIGNED_ID jdbc-type=INTEGER primarykey=true
 autoincrement=true /
   field-descriptor id=2 name=intModuleId column=MODUL_ID
 jdbc-type=INTEGER /
   field-descriptor id=3 name=strModuleExclusive
 column=SIMULTAN_WORK jdbc-type=CHAR /
   field-descriptor id=4 name=intActivityIdFK column=ACTIVITY_ID
 jdbc-type=INTEGER /

   reference-descriptor name=intActivityIdFK

 class-ref=de.premiere.plato.app.activity.entity.ActivityModel
   refresh=true
   auto-retrieve=true
   foreignkey field-id-ref=4 /
   /reference-descriptor
 /class-descriptor


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Re: Reloading/Refreshing attributes of an persistent object

[Sebastian]

Sebastian wrote:

The following seems to work, but I have no clue if it's the best way to 
reload an object:

public void reload(Object obj)
{
  ClassDescriptor cld = pb.getClassDescriptor(obj.getClass());
  cld.setAlwaysRefresh(true);
  pb.getObjectByQuery(new QueryByIdentity(obj));
}
Any comments?
pb.retrieveAllReferences(obj); needs to be added ... that's what I'm 
using now:

public void reload(Object ojb)
{
  ClassDescriptor cld = pb.getClassDescriptor(rechnung.getClass());
  synchronized (cld)
  {
boolean refresh = cld.isAlwaysRefresh();
cld.setAlwaysRefresh(true);
pb.getObjectByQuery(new QueryByIdentity(obj));
pb.retrieveAllReferences(obj);
cld.setAlwaysRefresh(refresh);
  }
}
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RE: ClassPersistenceNotCapableException: java.lang.Integer not found ...

[Gelhar, Wallace Joseph]

Hi Dirk,

ModuleModel should have an attribute of type ActivityModel.  This is the attribute 
name the reference descriptor is looking for.  It also appears that your package names 
do not correspond 

de.premiere.plato.app.activity.entity.ActivityModel != de.activity.entity.ActivityModel

I assume this is a CP oversight.

Public class ModuleModel {
Integer intActivityIdFK;
ActivityModel activity;
...
}

reference-descriptor name=activity
class-ref=de.activity.entity.ActivityModel
refresh=true
auto-retrieve=true
foreignkey field-ref=intActivityIdFK /
/reference-descriptor

Hope this helps.

Wally

-Original Message-
From: Dirk Manske (Service Respond) [mailto:[EMAIL PROTECTED] On Behalf Of Dirk Manske
Sent: Monday, December 29, 2003 1:14 PM
To: 'OJB Users List'
Subject: AW: ClassPersistenceNotCapableException: java.lang.Integer not found ...
Sensitivity: Personal


Thanks for your answer. When I change the reference name to   I get a 
MetadataException which states that it can't find a member  in 
de.plato.app.activity.entity.ModuleModel. Of course there is no member  in this 
class since I declared all attributes already in the class-descriptor. Any idea?

Dirk 


-Ursprüngliche Nachricht-
Von: João Vieira da Luz [mailto:[EMAIL PROTECTED] 
Gesendet: Montag, 29. Dezember 2003 19:51
An: 'OJB Users List'
Betreff: RE: ClassPersistenceNotCapableException: java.lang.Integer not found ...
Vertraulichkeit: Persönlich

I think your problem is in the name of the reference-descriptor it has the same name 
that field 4. Try to change the name and I think it will work fine.

-Original Message-
From: Dirk Manske (Service Respond) [mailto:[EMAIL PROTECTED]
Sent: segunda-feira, 29 de Dezembro de 2003 18:43
To: [EMAIL PROTECTED]
Subject: ClassPersistenceNotCapableException: java.lang.Integer not found ...
Sensitivity: Personal

Hi,

Can someone tell me how to set a reference-descriptor for a foreign key? Below is an 
excerpt of my repository-user.xml file. I always get the error
message: ClassPersistenceNotCapableException: java.lang.Integer not found in 
repository.xml ... I have no clue what to do. Thx,

Dirk


class-descriptor class=de.activity.entity.ActivityModel
table=TPACTIVITY 
field-descriptor id=1 name=intActivityId column=ACTIVITY_ID 
jdbc-type=INTEGER primarykey=true autoincrement=true /
field-descriptor id=2 name=strActivityName
column=ACTIVITY_NAME  jdbc-type=CHAR / 
/class-descriptor


class-descriptor class=de.activity.entity.ModuleModel table=TMODULE 
field-descriptor id=1 name=intModuleAssignedId column=MODUL_ASSIGNED_ID 
jdbc-type=INTEGER primarykey=true autoincrement=true /
field-descriptor id=2 name=intModuleId column=MODUL_ID 
jdbc-type=INTEGER /
field-descriptor id=3 name=strModuleExclusive column=SIMULTAN_WORK 
jdbc-type=CHAR /
field-descriptor id=4 name=intActivityIdFK column=ACTIVITY_ID 
jdbc-type=INTEGER /

reference-descriptor name=intActivityIdFK

class-ref=de.premiere.plato.app.activity.entity.ActivityModel
refresh=true
auto-retrieve=true
foreignkey field-id-ref=4 /
/reference-descriptor
/class-descriptor


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AW: AW: ClassPersistenceNotCapableException: java.lang.Integer not found ...

[Dirk Manske (Service Respond)]

 Hi Edson,

 this information was exactly what I have been looking for. Now it is
working. Thanks a lot.

Dirk

-Ursprüngliche Nachricht-
Von: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] 
Gesendet: Montag, 29. Dezember 2003 20:59
An: OJB Users List
Betreff: Re: AW: ClassPersistenceNotCapableException: java.lang.Integer not
found ...

Look, as you defined

field-descriptor id=4 name=intActivityIdFK column=ACTIVITY_ID
jdbc-type=INTEGER /

you can't have (or you will always get ClassCastException!!!)

reference-descriptor name=intActivityIdFK

class-ref=de.premiere.plato.app.activity.entity.ActivityModel
refresh=true
auto-retrieve=true
foreignkey field-id-ref=4 /
/reference-descriptor

But you can create an attribute intActivityIdFk (of type int) AND activityFk
(of type
ActivityModel) in your beean, and your class descriptor should be like (and
this should work
fine)

class-descriptor class=de.activity.entity.ModuleModel table=TMODULE  
field-descriptor id=1 name=intModuleAssignedId
column=MODUL_ASSIGNED_ID jdbc-type=INTEGER primarykey=true
autoincrement=true /
field-descriptor id=2 name=intModuleId
column=MODUL_ID jdbc-type=INTEGER /
field-descriptor id=3 name=strModuleExclusive
column=SIMULTAN_WORK jdbc-type=CHAR /
field-descriptor id=4 name=intActivityIdFK column=ACTIVITY_ID
jdbc-type=INTEGER /

reference-descriptor name=activityFK

class-ref=de.premiere.plato.app.activity.entity.ActivityModel
refresh=true
auto-retrieve=true
foreignkey field-id-ref=intActivityIdFk /
/reference-descriptor
/class-descriptor




Best regards,

Edson Richter

 Thanks for your answer. When I change the reference name to   I 
 get a MetadataException which states that it can't find a member  
 in de.plato.app.activity.entity.ModuleModel. Of course there is no 
 member  in this class since I declared all attributes already in 
 the class-descriptor. Any idea?

 Dirk


 -Ursprüngliche Nachricht-
 Von: João Vieira da Luz [mailto:[EMAIL PROTECTED]
 Gesendet: Montag, 29. Dezember 2003 19:51
 An: 'OJB Users List'
 Betreff: RE: ClassPersistenceNotCapableException: java.lang.Integer 
 not found ...
 Vertraulichkeit: Persönlich

 I think your problem is in the name of the reference-descriptor it has 
 the same name that field 4. Try to change the name and I think it will 
 work fine.

 -Original Message-
 From: Dirk Manske (Service Respond)
 [mailto:[EMAIL PROTECTED]
 Sent: segunda-feira, 29 de Dezembro de 2003 18:43
 To: [EMAIL PROTECTED]
 Subject: ClassPersistenceNotCapableException: java.lang.Integer not 
 found ...
 Sensitivity: Personal

 Hi,

 Can someone tell me how to set a reference-descriptor for a foreign key?
 Below is an excerpt of my repository-user.xml file. I always get the 
 error
 message: ClassPersistenceNotCapableException: java.lang.Integer not 
 found in repository.xml ... I have no clue what to do. Thx,

 Dirk


 class-descriptor class=de.activity.entity.ActivityModel
 table=TPACTIVITY 
   field-descriptor id=1 name=intActivityId column=ACTIVITY_ID
 jdbc-type=INTEGER primarykey=true autoincrement=true /
   field-descriptor id=2 name=strActivityName
 column=ACTIVITY_NAME  jdbc-type=CHAR / /class-descriptor


 class-descriptor class=de.activity.entity.ModuleModel table=TMODULE 
   field-descriptor id=1 name=intModuleAssignedId
 column=MODUL_ASSIGNED_ID jdbc-type=INTEGER primarykey=true
 autoincrement=true /
   field-descriptor id=2 name=intModuleId column=MODUL_ID
 jdbc-type=INTEGER /
   field-descriptor id=3 name=strModuleExclusive
 column=SIMULTAN_WORK jdbc-type=CHAR /
   field-descriptor id=4 name=intActivityIdFK column=ACTIVITY_ID
 jdbc-type=INTEGER /

   reference-descriptor name=intActivityIdFK

 class-ref=de.premiere.plato.app.activity.entity.ActivityModel
   refresh=true
   auto-retrieve=true
   foreignkey field-id-ref=4 /
   /reference-descriptor
 /class-descriptor


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OQLQuery being cached? [orb newbie]

[katarn]

Hi,

I am executing the following code:

  OQLQuery query = impl.newOQLQuery();
  query.create( [THEQUERY] );
  DList results = (DList)query.execute();
  Iterator iterator = results.iterator();
If I change some column with an external tool and then execute the code, 
the updated column is not reflected in the orb objects.

Is there a config value or a runtime parameter that I need to change? 
What is going on behind the scenes here?

Thanks for your help,

K.



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Re: OQLQuery being cached? [orb newbie]

[edson . richter]

Are you working with DefaultCacheImpl or EmptyCacheImpl?
If you are working with DefaultCacheImpl, take a look at config parameters.
Otherwise, are there any exceptions (stack trace), messages (they can be very usefull 
if you
enable higher level of logging as DEBUG).

Best regards,

Edson Richter


 Hi,

 I am executing the following code:

OQLQuery query = impl.newOQLQuery();
query.create( [THEQUERY] );
DList results = (DList)query.execute();
Iterator iterator = results.iterator();

 If I change some column with an external tool and then execute the code,
 the updated column is not reflected in the orb objects.

 Is there a config value or a runtime parameter that I need to change?
 What is going on behind the scenes here?

 Thanks for your help,

 K.



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Re: OQLQuery being cached? [orb newbie]

[katarn]

Thanks for your quick answer, I cheched the OJB.properties file an I 
was using DefaultCacheImpl  I change it to ObjectCacheEmptyImpl and now 
it is working as I was expecting.

Now just to learn the reasons for the previous behaviour:

A comment in OJB.properties:
   # The ObjectCacheClass entry tells OJB which concrete ObjectCache
   # implementation is to be used as standard cache.
   # Its also possible to override this entry adding object-cache 
elements
   # on jdbc-connection-descriptor level and
   # per class-descriptor in repository file

In  my repository_internal.xml I have the following line:

   object-cache class=org.apache.ojb.broker.cache.ObjectCacheEmptyImpl
   /object-cache
Why it wasn't working as I was expecting?
Where is the documentation about the config parameters for the cache 
implementations?

Thanks for your help,

K.

[EMAIL PROTECTED] wrote:

Are you working with DefaultCacheImpl or EmptyCacheImpl?
If you are working with DefaultCacheImpl, take a look at config parameters.
Otherwise, are there any exceptions (stack trace), messages (they can be very usefull 
if you
enable higher level of logging as DEBUG).
Best regards,

Edson Richter

 



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Re: OQLQuery being cached? [orb newbie]

[edson . richter]

In real, I'm not an specialist in caches ;), but I've used with success object-cache 
..
tag inside class-descriptor, no elsewhere.

I think I've read somewhere that is possible to configure the object-cache for the
connection (or the alias), but I never reade more, and now I'm not sure. Give a try to 
DTD
doc. Is the first place I look when in doubt.

Best regards,

Edson Richter


 Thanks for your quick answer, I cheched the OJB.properties file an I
 was using DefaultCacheImpl  I change it to ObjectCacheEmptyImpl and now
 it is working as I was expecting.

 Now just to learn the reasons for the previous behaviour:

 A comment in OJB.properties:
 # The ObjectCacheClass entry tells OJB which concrete ObjectCache
 # implementation is to be used as standard cache.
 # Its also possible to override this entry adding object-cache
 elements
 # on jdbc-connection-descriptor level and
 # per class-descriptor in repository file

 In  my repository_internal.xml I have the following line:

 object-cache class=org.apache.ojb.broker.cache.ObjectCacheEmptyImpl
 /object-cache

 Why it wasn't working as I was expecting?
 Where is the documentation about the config parameters for the cache
 implementations?

 Thanks for your help,

 K.


 [EMAIL PROTECTED] wrote:

Are you working with DefaultCacheImpl or EmptyCacheImpl?
If you are working with DefaultCacheImpl, take a look at config parameters.
Otherwise, are there any exceptions (stack trace), messages (they can be very 
usefull if
 you
enable higher level of logging as DEBUG).

Best regards,

Edson Richter







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