Java: JDK 7_60 , Spring v4, Hibernate v4, Spring-LDAP v2
Проблема: При работе с 2-мя источниками, проблема с управлением транзакциями.
Решение:
<bean id="jpaUnderLdapTransactionManager" class="org.springframework.ldap.transaction.compensating.manager.ContextSourceAndJpaTransactionManager">
<property name="contextSource" ref="ldapSimpleContextSource"/>
<property name="entityManagerFactory" ref="entityManagerFactory"/>
</bean>
<tx:annotation-driven transaction-manager="jpaUnderLdapTransactionManager"/>
Class ContextSourceAndJpaTransactionManager
public class ContextSourceAndJpaTransactionManager extends JpaTransactionManager
{
private static final long serialVersionUID = 1L;
private ContextSourceTransactionManagerDelegate ldapManagerDelegate =
new ContextSourceTransactionManagerDelegate();
/**
* @see org.springframework.orm.jpa.JpaTransactionManager#isExistingTransaction(Object)
*/
protected boolean isExistingTransaction(Object transaction)
{
ContextSourceAndJpaTransactionObject actualTransactionObject =
(ContextSourceAndJpaTransactionObject) transaction;
return super.isExistingTransaction(actualTransactionObject
.getJpaTransactionObject());
}
/**
* @see org.springframework.orm.jpa.JpaTransactionManager#doGetTransaction()
*/
protected Object doGetTransaction() throws TransactionException
{
Object dataSourceTransactionObject = super.doGetTransaction();
Object contextSourceTransactionObject =
ldapManagerDelegate.doGetTransaction();
return new ContextSourceAndJpaTransactionObject(
contextSourceTransactionObject, dataSourceTransactionObject
);
}
/**
* @see org.springframework.orm.jpa.JpaTransactionManager#doBegin(java.lang.Object,
* org.springframework.transaction.TransactionDefinition)
*/
protected void doBegin(Object transaction, TransactionDefinition definition)
throws TransactionException
{
ContextSourceAndJpaTransactionObject actualTransactionObject =
(ContextSourceAndJpaTransactionObject) transaction;
super.doBegin(actualTransactionObject.getJpaTransactionObject(),
definition);
ldapManagerDelegate.doBegin(
actualTransactionObject.getLdapTransactionObject(),
definition
);
}
/**
* @see org.springframework.orm.jpa.JpaTransactionManager#doCleanupAfterCompletion(java.lang.Object)
*/
protected void doCleanupAfterCompletion(Object transaction)
{
ContextSourceAndJpaTransactionObject actualTransactionObject =
(ContextSourceAndJpaTransactionObject) transaction;
super.doCleanupAfterCompletion(actualTransactionObject
.getJpaTransactionObject());
ldapManagerDelegate.doCleanupAfterCompletion(actualTransactionObject
.getLdapTransactionObject());
}
/**
* @see org.springframework.orm.jpa.JpaTransactionManager#doCommit(org.springframework.transaction.support.DefaultTransactionStatus)
*/
protected void doCommit(DefaultTransactionStatus status)
throws TransactionException
{
ContextSourceAndJpaTransactionObject actualTransactionObject =
(ContextSourceAndJpaTransactionObject) status.getTransaction();
try
{
super.doCommit(new DefaultTransactionStatus(
actualTransactionObject.getJpaTransactionObject(),
status.isNewTransaction(),
status.isNewSynchronization(),
status.isReadOnly(),
status.isDebug(),
status.getSuspendedResources())
);
}
catch (TransactionException ex)
{
if (isRollbackOnCommitFailure())
{
logger.debug("Failed to commit db resource, rethrowing", ex);
// If we are to rollback on commit failure, just rethrow the
// exception - this will cause a rollback to be performed on
// both resources.
throw ex;
}
else
{
logger.warn(
"Failed to commit and resource is rollbackOnCommit not set -"
+ " proceeding to commit ldap resource.");
}
}
ldapManagerDelegate.doCommit(new DefaultTransactionStatus(
actualTransactionObject.getLdapTransactionObject(),
status.isNewTransaction(),
status.isNewSynchronization(),
status.isReadOnly(),
status.isDebug(),
status.getSuspendedResources())
);
}
/**
* @see org.springframework.orm.jpa.JpaTransactionManager#doRollback(org.springframework.transaction.support.DefaultTransactionStatus)
*/
protected void doRollback(DefaultTransactionStatus status) throws TransactionException
{
ContextSourceAndJpaTransactionObject actualTransactionObject =
(ContextSourceAndJpaTransactionObject) status.getTransaction();
super.doRollback(new DefaultTransactionStatus(
actualTransactionObject.getJpaTransactionObject(),
status.isNewTransaction(),
status.isNewSynchronization(),
status.isReadOnly(),
status.isDebug(),
status.getSuspendedResources())
);
ldapManagerDelegate.doRollback(new DefaultTransactionStatus(
actualTransactionObject.getLdapTransactionObject(),
status.isNewTransaction(),
status.isNewSynchronization(),
status.isReadOnly(),
status.isDebug(),
status.getSuspendedResources())
);
}
@SuppressWarnings("UnusedDeclaration")
public ContextSource getContextSource()
{
return ldapManagerDelegate.getContextSource();
}
public void setContextSource(ContextSource contextSource)
{
ldapManagerDelegate.setContextSource(contextSource);
}
@SuppressWarnings("UnusedDeclaration")
protected void setRenamingStrategy(TempEntryRenamingStrategy renamingStrategy)
{
ldapManagerDelegate.setRenamingStrategy(renamingStrategy);
}
private final static class ContextSourceAndJpaTransactionObject
{
private Object ldapTransactionObject;
private Object jpaTransactionObject;
public ContextSourceAndJpaTransactionObject(
Object ldapTransactionObject, Object jpaTransactionObject)
{
this.ldapTransactionObject = ldapTransactionObject;
this.jpaTransactionObject = jpaTransactionObject;
}
public Object getJpaTransactionObject()
{
return jpaTransactionObject;
}
public Object getLdapTransactionObject()
{
return ldapTransactionObject;
}
}
/**
* @see org.springframework.orm.jpa.JpaTransactionManager#doSuspend(java.lang.Object)
*/
protected Object doSuspend(Object transaction) throws TransactionException
{
throw new TransactionSuspensionNotSupportedException(
"Transaction manager [" + getClass().getName()
+ "] does not support transaction suspension");
}
/**
* @see org.springframework.orm.jpa.JpaTransactionManager#doResume(java.lang.Object, java.lang.Object)
*/
protected void doResume(Object transaction, Object suspendedResources)
throws TransactionException
{
throw new TransactionSuspensionNotSupportedException(
"Transaction manager [" + getClass().getName()
+ "] does not support transaction suspension");
}
/**
* @see org.springframework.orm.jpa.JpaTransactionManager#doSetRollbackOnly(org.springframework.transaction.support.DefaultTransactionStatus)
*/
@Override
protected void doSetRollbackOnly(DefaultTransactionStatus status)
{
super.doSetRollbackOnly(
new DefaultTransactionStatus(
((ContextSourceAndJpaTransactionObject)status.getTransaction())
.getJpaTransactionObject(),
status.isNewTransaction(),
status.isNewSynchronization(),
status.isReadOnly(),
status.isDebug(),
status.getSuspendedResources())
);
}
}
P.S: На форумах поодержки spring-ldap пишут что использование 2-х транзакций это зло
