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[经验分享] LDAP 与 MySql 连用 的JPA事物问题

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发表于 2018-10-2 10:40:57 | 显示全部楼层 |阅读模式
import org.springframework.ldap.core.ContextSource;  
import org.springframework.ldap.transaction.compensating.TempEntryRenamingStrategy;
  
import org.springframework.ldap.transaction.compensating.manager.ContextSourceTransactionManagerDelegate;
  
import org.springframework.orm.jpa.JpaTransactionManager;
  
import org.springframework.transaction.TransactionDefinition;
  
import org.springframework.transaction.TransactionException;
  
import org.springframework.transaction.TransactionSuspensionNotSupportedException;
  
import org.springframework.transaction.support.DefaultTransactionStatus;

  
public>  
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())
  
);
  
}
  
public ContextSource getContextSource()
  
{
  
return ldapManagerDelegate.getContextSource();
  
}
  
public void setContextSource(ContextSource contextSource)
  
{
  
ldapManagerDelegate.setContextSource(contextSource);
  
}
  
protected void setRenamingStrategy(TempEntryRenamingStrategy renamingStrategy)
  
{
  
ldapManagerDelegate.setRenamingStrategy(renamingStrategy);
  
}

  
private final static>  
{
  
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())
  
);
  
}
  
}



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所有资源均系网友上传或者通过网络收集,我们仅提供一个展示、介绍、观摩学习的平台,我们不对其承担任何法律责任,如涉及侵犯版权等问题,请您及时通知我们,我们将立即处理,联系人Email:kefu@iyunv.com,QQ:1061981298 本贴地址:https://www.yunweiku.com/thread-607460-1-1.html 上篇帖子: Zabbix部署及邮件报警(zabbix、mysql-master、mysql-slave、LAP) 下篇帖子: mysql5.5以上半同步讲解
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