net.java.trueupdate.manager.spec.tx
Class CompositeTransaction

java.lang.Object
  net.java.trueupdate.manager.spec.tx.Transaction
      net.java.trueupdate.manager.spec.tx.CompositeTransaction

public final class CompositeTransaction
extends Transaction

A composite transaction.

Author:

Christian Schlichtherle

CompositeTransaction

public CompositeTransaction(Transaction... txs)

commit

public void commit()
            throws Exception

Description copied from class: Transaction

Commits the visible side effects of the body of this transaction. If this method succeeds, any visible side effects of Transaction.perform() must be durable. If this method fails, the state of this transaction is undefined and may be inconsistent. If this method fails and this transaction is part of a composite transaction, then the previous transactions get neither committed nor rolled back and their state is undefined and may be inconsistent.

Overrides:

commit in class Transaction

Throws:

Exception

perform

public void perform()
             throws Exception

Description copied from class: Transaction

Executes the body of this transaction. If this method fails then this transaction gets aborted with calling Transaction.rollback(), so it may leave some visible side effects. If this method fails and this transaction is part of a composite transaction, then the previous transactions get properly rolled back.

Specified by:

perform in class Transaction

Throws:

Exception

prepare

public void prepare()
             throws Exception

Description copied from class: Transaction

Sets up this transaction for execution. If this method fails then this transaction gets aborted without calling Transaction.rollback(), so it must not leave any visible side effects. If this method fails and this transaction is part of a composite transaction, then the previous transactions get properly rolled back.

Overrides:

prepare in class Transaction

Throws:

Exception

rollback

public void rollback()
              throws Exception

Description copied from class: Transaction

Reverts any visible side effects of the body of this transaction. If this method succeeds, it must revert any visible side effects of Transaction.perform(). If this method fails, the state of this transaction is undefined and may be inconsistent. If this method fails and this transaction is part of a composite transaction, then the previous transactions get neither committed nor rolled back and their state is undefined and may be inconsistent.

Specified by:

rollback in class Transaction

Throws:

Exception