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package oracle.toplink.essentials.internal.ejb.cmp3.transaction;
import javax.persistence.EntityTransaction;
import javax.persistence.TransactionRequiredException;
import oracle.toplink.essentials.internal.ejb.cmp3.EntityManagerImpl;
import oracle.toplink.essentials.exceptions.TransactionException;
/**
* INTERNAL:
* JDK 1.5 specific version of EntityTransactionWrapper. Differs from the JDK 1.4 version
* in that it implements a different version of the TransactionWrapper interface,
* uses a different EntityManager, and returns a different EntityTransaction version.
*
* @see oracle.toplink.essentials.internal.ejb.cmp3.transaction.EntityTransactionWrapper
*/
public class EntityTransactionWrapper
extends oracle.toplink.essentials.internal.ejb.cmp3.transaction.base.EntityTransactionWrapper
implements TransactionWrapper
{
public EntityTransactionWrapper(EntityManagerImpl entityManager) {
super(entityManager);
}
/**
* Lazy initialize the EntityTransaction.
* There can only be one EntityTransaction at a time.
*/
public EntityTransaction getTransaction(){
if (entityTransaction == null){
entityTransaction = new EntityTransactionImpl(this);
}
return (EntityTransaction)entityTransaction;
}
/**
* Mark the current transaction so that the only possible
* outcome of the transaction is for the transaction to be
* rolled back.
* This is an internal method and if the txn is not active will do nothing
*/
public void setRollbackOnlyInternal(){
if (this.getTransaction().isActive()){
this.getTransaction().setRollbackOnly();
}
}
protected void throwCheckTransactionFailedException() {
throw new TransactionRequiredException(TransactionException.transactionNotActive().getMessage());
}
}