cern.entwined

Interface Transaction<T>

Type Parameters:

T - The client Snapshot type.

All Known Implementing Classes:

TransactionAdapter, TransactionClosure

public interface Transaction<T>

The transaction callback interface. Implementation of this interface must be passed to Memory object.

Author:

Ivan Koblik

Method Summary

Methods

Modifier and Type	Method and Description
void	committed(T data) Implementation of this method must contain all the I/O and post transactional processing.
boolean	run(T data) Implementation of this method must include in-transactional code and manipulations with shared memory.

Method Detail

run

boolean run(T data)
            throws Exception

Implementation of this method must include in-transactional code and manipulations with shared memory. Any exception thrown by this method will cancel the transaction.

Parameters:

data - The shared memory data.

Returns:

the commit request true to commit, false to rollback.

Throws:

Exception - Runtime exception will be propagated unchanged while checked exception will be wrapped into InvocationException.

committed

void committed(T data)
               throws Exception

Implementation of this method must contain all the I/O and post transactional processing. Exceptions thrown by this method will not cancel the transaction.

Parameters:

data - Shared memory data after commit.

Throws:

Exception - Runtime exception will be propagated unchanged while checked exception will be wrapped into InvocationException.