How to rollback transaction in Seam?

[sherkan777]

Hi,
Can anybody tell me how to rollback transaction in Seam?

I use:

     <persistence-unit name="SGUniAdmDatabase" transaction-type="JTA">
         <provider>org.hibernate.ejb.HibernatePersistence</provider>
          <jta-data-source>java:/SGUniAdmDatasource</jta-data-source>
               <class>pl.administration.model.Adv_Links</class>          
               <class>pl.administration.model.Adv_Emails</class>
               <class>pl.administration.model.News</class>
               <class>pl.administration.model.Pacc_Passwords</class>
               <class>pl.administration.model.Tutorial</class>
               <exclude-unlisted-classes>true</exclude-unlisted-classes>               
               <properties>
                    <property name="dialect" value="org.hibernate.dialect.PostgreSQLDialect" />
                   <!-- These are the default for JBoss EJB3, but not for HEM: -->
                   <property name="hibernate.cache.provider_class" value="org.hibernate.cache.HashtableCacheProvider"/>
                   <property name="hibernate.transaction.manager_lookup_class" value="org.hibernate.transaction.JBossTransactionManagerLookup"/>
                    
                   <property name="hibernate.cache.use_second_level_cache" value="true" /> 
                 <property name="hibernate.cache.use_query_cache" value="true"/>
                 <property name="hibernate.cache.region_prefix" value="hibernate.test"/>
                   <property name="hibernate.cache.use_minimal_puts" value="true"/>
                    <property name="hibernate.cache.use_structured_entries" value="true"/>
                    
                 <property name="hibernate.jdbc.use_streams_for_binary" value="true"/>
                   <!-- 
                         <property name="hibernate.generate_statistics" value="false"/>
                         <property name="hibernate.connection.isolation" value="4"/>   -->
                      
                              
                    <!-- <property name="hibernate.show_sql" value="true"/> -->
                    <!-- <property name="hibernate.hbm2ddl.auto" value="create"/>  -->                    
                    
                    <property name="hibernate.transaction.manager_lookup_class" 
                              value="org.hibernate.transaction.JBossTransactionManagerLookup"/>
                    <property name="jboss.entity.manager.factory.jndi.name" 
                              value="java:/SGUniAdmEntityManagerFactory" />
               </properties>
     </persistence-unit>

and

     @In
     private EntityManager sguniAdm;    

here is try block:

try {
....some error
} catch (Exception e) {
 sguniAdm.???????
}

[binnyg]

You can throw an @ApplicationException with rollback set to true and handle the exception in pages.xml. May be display the same page with error message.

[sherkan777]

Hi,
I read about rollingback exceptions and found some example in Seam blog example.

Can u point or correct me is that right?
In my source code, I've got lot of sub methods/classes and need to service that and keep atomic transaction.

This is my exception.

import javax.ejb.ApplicationException;
import javax.servlet.http.HttpServletResponse;

import org.jboss.seam.annotations.exception.HttpError;

@ApplicationException(rollback=true)
@HttpError(errorCode=HttpServletResponse.SC_NOT_FOUND)
public class SGUniUncheckedException extends Exception {
     
     SGUniUncheckedException(String id) {
          super(id);
     }
}

In my case, I don't want to show user that error is thrown or any, and I don't think adding to pages.xml anythink is necessary.

and my app method

@TransactionAttribute(TransactionAttributeType.MANDATORY)
private void partOne() {
   try {
       //do somethink on DB
   } catch (SGUniUncheckedException e) {
       throw e;
   }
}

upper method which will rollback exception;

@TransactionAttribute(TransactionAttributeType.REQUIRES_NEW)
public void mainMethod() {
    try {
        ///do somethink
        partOne();
    } catch (SGUniUncheckedException e) {
        throw e;
    }

}

[sherkan777]

Can anybody help me with that problem, or show own source code to point on right way?
Please for help