org.apache.ambari.server.orm

Class AmbariJpaLocalTxnInterceptor

java.lang.Object

org.apache.ambari.server.orm.AmbariJpaLocalTxnInterceptor

All Implemented Interfaces:

org.aopalliance.aop.Advice, org.aopalliance.intercept.Interceptor, org.aopalliance.intercept.MethodInterceptor

public class AmbariJpaLocalTxnInterceptor
extends Object
implements org.aopalliance.intercept.MethodInterceptor

The AmbariJpaLocalTxnInterceptor is used to intercept method calls annotated with the Transactional annotation. If a transaction is not already in progress, then a new transaction is automatically started. Otherwise, the currently active transaction will be reused.

This interceptor also works with TransactionalLocks to lock on TransactionalLock.LockAreas. If this interceptor encounters a TransactionalLock it will acquire the lock and then add the TransactionalLock.LockArea to a collection of areas which need to be released when the transaction is committed or rolled back. This ensures that transactional methods invoke from an already running transaction can have their lock invoked for the lifespan of the outer "parent" transaction.

Constructor Summary

Constructors

Constructor and Description
AmbariJpaLocalTxnInterceptor()

Method Summary

Modifier and Type	Method and Description
Object	invoke(org.aopalliance.intercept.MethodInvocation methodInvocation)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

AmbariJpaLocalTxnInterceptor

public AmbariJpaLocalTxnInterceptor()

Method Detail

invoke

public Object invoke(org.aopalliance.intercept.MethodInvocation methodInvocation)
              throws Throwable

Specified by:

invoke in interface org.aopalliance.intercept.MethodInterceptor

Throws:

Throwable