RE: Tapestry5 and envers (2)

2009-12-21 Thread Jim O'Callaghan 
Hi Alejandro,

Your email is encouraging in that it confirms envers can be used successfully 
with Tapestry, though unfortunately I am already using context class 'thread' 
and the non-proxy hibernate session so must start looking elsewhere for the 
source of the problem.  Can you tell me what version of Tapestry you are using 
(I am on 5.1.0.5) and whether you are using the Tapestry-Hibernate package or 
integrating Hibernate yourself?  Also, does your getClassDescriptor().getType() 
method below return a entity.class or a entity_AUD.class - i.e. have you 
any non-dynamic representations of the *_AUD classes in your application or is 
envers doing all the work at runtime?  Thanks.

Regards,
Jim.

-Original Message-
From: Alejandro Scandroli [mailto:alejandroscandr...@gmail.com]
Sent: 20 December 2009 16:46
To: Tapestry users
Subject: Re: Tapestry5 and envers (2)


Hi Jim

 Are you able to query the audited entities using the AuditReader?
Yes, I can create queries using AuditReader.

Two questions:
1) Are you using current_session_context_class = thread ?
property name=current_session_context_classthread/property

2) Are you using the real Hibernate Session.
http://www.mail-archive.com/users@tapestry.apache.org/msg37227.html

Here is my code (the relevant part)

@Inject
private HibernateSessionManager sessionManager;
.

AuditReader reader = AuditReaderFactory.get(sessionManager.getSession());
AuditQuery query =
reader.createQuery().forRevisionsOfEntity(getClassDescriptor().getType(),
false, true);

query.add(AuditEntity.id().eq(getBeanId()));


Saludos.
Alejandro.

On Sun, Dec 20, 2009 at 2:59 PM, Jim O'Callaghan jc1000...@yahoo.co.uk wrote:
 Howard, Alejandro,

 Thanks for looking at the problem.

 Alejandro,

 Thanks for the detailed source.

 I had made local (less elegant!) changes that I think have the same net 
 effect as the changes you have outlined below:

  - locally modified org.apache.tapestry5.hibernate.HibernateModule.java to 
 not contribute a ValueEncoder for a persistentClass if the class has no 
 MappedClass (I was using .hasPojoRepresentation to decide as I wasn't sure 
 that the lack of a MappedClass should be correctly flagged as an error 
 situation under certain circumstances)

  - added a section as follows to the existing 
 contributeHibernateSessionSource method within my AppModule:

AuditEventListener[] auditEventListener = new 
 AuditEventListener[] {new AuditEventListener()};

 configuration.getEventListeners().setPostInsertEventListeners(auditEventListener);

 configuration.getEventListeners().setPostUpdateEventListeners(auditEventListener);

 configuration.getEventListeners().setPostDeleteEventListeners(auditEventListener);

 configuration.getEventListeners().setPreCollectionUpdateEventListeners(auditEventListener);

 configuration.getEventListeners().setPreCollectionRemoveEventListeners(auditEventListener);

 configuration.getEventListeners().setPostCollectionRecreateEventListeners(auditEventListener);

 The type of AuditEventListener above is definitely 
 org.hibernate.envers.event.AuditEventListener.  My entities are being audited 
 correctly upon save / update - the problem is when I use 
 org.hibernate.envers.AuditReaderFactory / AuditReader to create a query to 
 return some of the audited entities - this is where the xyz_AUD is not 
 mapped issue occurs.  Are you able to query the audited entities using the 
 AuditReader?  If you are then perhaps I have some other settings incorrect - 
 I also tried taking out my changes and replacing them with yours, in case 
 there was some subtle difference I was missing, but got the same result. 
 Thanks.

 Regards,
 Jim.

 -Original Message-
 From: Alejandro Scandroli [mailto:alejandroscandr...@gmail.com]
 Sent: 19 December 2009 20:05
 To: Tapestry users
 Subject: Re: Tapestry5 and envers (2)


 Here is how I worked around this problem:

 First in your AppModule prevent Hibernate from contributing the
 ValueEncoderSource with this:

 public static void
 contributeFactoryDefaults(MappedConfigurationString, String
 configuration)
 {
configuration.override(HibernateSymbols.PROVIDE_ENTITY_VALUE_ENCODERS,
 false);
 }

 Then implement your own contributeValueEncoderSource skipping the
 ValueEncoder creation if entityClass is null

 @SuppressWarnings(unchecked)
 public static void
 contributeValueEncoderSource(MappedConfigurationClass,
 ValueEncoderFactory configuration,
final
 HibernateSessionSource sessionSource,
final Session session,
final TypeCoercer typeCoercer,
final PropertyAccess

RE: Tapestry5 and envers (2)

2009-12-21 Thread Jim O'Callaghan 
Alejandro,

I got this working - thanks for your help.  There was an issue to do with 
Super/sub classes not being annotated with @Audited that contributed to the 
problem, which clouded the testing once the configuration had been sorted out - 
thanks.

Regards,
Jim.

-Original Message-
From: Jim O'Callaghan [mailto:jc1000...@yahoo.co.uk]
Sent: 21 December 2009 10:22
To: Tapestry users
Subject: RE: Tapestry5 and envers (2)


Hi Alejandro,

Your email is encouraging in that it confirms envers can be used successfully 
with Tapestry, though unfortunately I am already using context class 'thread' 
and the non-proxy hibernate session so must start looking elsewhere for the 
source of the problem.  Can you tell me what version of Tapestry you are using 
(I am on 5.1.0.5) and whether you are using the Tapestry-Hibernate package or 
integrating Hibernate yourself?  Also, does your getClassDescriptor().getType() 
method below return a entity.class or a entity_AUD.class - i.e. have you 
any non-dynamic representations of the *_AUD classes in your application or is 
envers doing all the work at runtime?  Thanks.

Regards,
Jim.

-Original Message-
From: Alejandro Scandroli [mailto:alejandroscandr...@gmail.com]
Sent: 20 December 2009 16:46
To: Tapestry users
Subject: Re: Tapestry5 and envers (2)


Hi Jim

 Are you able to query the audited entities using the AuditReader?
Yes, I can create queries using AuditReader.

Two questions:
1) Are you using current_session_context_class = thread ?
property name=current_session_context_classthread/property

2) Are you using the real Hibernate Session.
http://www.mail-archive.com/users@tapestry.apache.org/msg37227.html

Here is my code (the relevant part)

@Inject
private HibernateSessionManager sessionManager;
.

AuditReader reader = AuditReaderFactory.get(sessionManager.getSession());
AuditQuery query =
reader.createQuery().forRevisionsOfEntity(getClassDescriptor().getType(),
false, true);

query.add(AuditEntity.id().eq(getBeanId()));


Saludos.
Alejandro.

On Sun, Dec 20, 2009 at 2:59 PM, Jim O'Callaghan jc1000...@yahoo.co.uk wrote:
 Howard, Alejandro,

 Thanks for looking at the problem.

 Alejandro,

 Thanks for the detailed source.

 I had made local (less elegant!) changes that I think have the same net 
 effect as the changes you have outlined below:

  - locally modified org.apache.tapestry5.hibernate.HibernateModule.java to 
 not contribute a ValueEncoder for a persistentClass if the class has no 
 MappedClass (I was using .hasPojoRepresentation to decide as I wasn't sure 
 that the lack of a MappedClass should be correctly flagged as an error 
 situation under certain circumstances)

  - added a section as follows to the existing 
 contributeHibernateSessionSource method within my AppModule:

AuditEventListener[] auditEventListener = new 
 AuditEventListener[] {new AuditEventListener()};

 configuration.getEventListeners().setPostInsertEventListeners(auditEventListener);

 configuration.getEventListeners().setPostUpdateEventListeners(auditEventListener);

 configuration.getEventListeners().setPostDeleteEventListeners(auditEventListener);

 configuration.getEventListeners().setPreCollectionUpdateEventListeners(auditEventListener);

 configuration.getEventListeners().setPreCollectionRemoveEventListeners(auditEventListener);

 configuration.getEventListeners().setPostCollectionRecreateEventListeners(auditEventListener);

 The type of AuditEventListener above is definitely 
 org.hibernate.envers.event.AuditEventListener.  My entities are being audited 
 correctly upon save / update - the problem is when I use 
 org.hibernate.envers.AuditReaderFactory / AuditReader to create a query to 
 return some of the audited entities - this is where the xyz_AUD is not 
 mapped issue occurs.  Are you able to query the audited entities using the 
 AuditReader?  If you are then perhaps I have some other settings incorrect - 
 I also tried taking out my changes and replacing them with yours, in case 
 there was some subtle difference I was missing, but got the same result. 
 Thanks.

 Regards,
 Jim.

 -Original Message-
 From: Alejandro Scandroli [mailto:alejandroscandr...@gmail.com]
 Sent: 19 December 2009 20:05
 To: Tapestry users
 Subject: Re: Tapestry5 and envers (2)


 Here is how I worked around this problem:

 First in your AppModule prevent Hibernate from contributing the
 ValueEncoderSource with this:

 public static void
 contributeFactoryDefaults(MappedConfigurationString, String
 configuration)
 {
configuration.override(HibernateSymbols.PROVIDE_ENTITY_VALUE_ENCODERS,
 false);
 }

 Then implement your own contributeValueEncoderSource skipping the
 ValueEncoder creation if entityClass is null

 @SuppressWarnings(unchecked)

Help with using DWR with Tapestry

2009-12-21 Thread Ashwanth Kumar 
Hello,

In my project, i would like to use DWR along with Tapestry! But i've a
probelm. Its like i need to access the DB, i use Hibernate with Tapestry. In
my class i've:

@Inject
private Session _session;

when i access this class from DWR, Tapestry doesn't interfere at all. But,
i'm getting a null pointer exception where i first start using the Session.
How and what should be done for this?

 - Ashwanth Kumar