com.tinkerpop.blueprints.util.wrappers.event

Class EventTransactionalGraph<T extends TransactionalGraph>

java.lang.Object

com.tinkerpop.blueprints.util.wrappers.event.EventGraph<T>

com.tinkerpop.blueprints.util.wrappers.event.EventTransactionalGraph<T>

All Implemented Interfaces:

Graph, TransactionalGraph, WrapperGraph<T>

public class EventTransactionalGraph<T extends TransactionalGraph>
extends EventGraph<T>
implements TransactionalGraph, WrapperGraph<T>

The transactional implementation of EventGraph where events are raised in batch in the order they changes occured to the graph, but only after a successful commit to the underlying graph.

Author:

Stephen Mallette

Nested Class Summary

Nested classes/interfaces inherited from interface com.tinkerpop.blueprints.TransactionalGraph

TransactionalGraph.Conclusion

Field Summary

Fields inherited from class com.tinkerpop.blueprints.util.wrappers.event.EventGraph

baseGraph, graphChangedListeners, trigger

Constructor Summary

Constructors

Constructor and Description
EventTransactionalGraph(T baseGraph)

Method Summary

Methods

Modifier and Type	Method and Description
void	commit() A commit only fires the event queue on successful operation.
void	rollback() A rollback only resets the event queue on successful operation.
void	stopTransaction(TransactionalGraph.Conclusion conclusion) Stop the current transaction.

Methods inherited from class com.tinkerpop.blueprints.util.wrappers.event.EventGraph

addEdge, addListener, addVertex, getBaseGraph, getEdge, getEdges, getEdges, getFeatures, getListenerIterator, getTrigger, getVertex, getVertices, getVertices, onEdgeAdded, onEdgeRemoved, onVertexAdded, onVertexRemoved, query, removeAllListeners, removeEdge, removeListener, removeVertex, shutdown, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.tinkerpop.blueprints.Graph

addEdge, addVertex, getEdge, getEdges, getEdges, getFeatures, getVertex, getVertices, getVertices, query, removeEdge, removeVertex, shutdown

Methods inherited from interface com.tinkerpop.blueprints.util.wrappers.WrapperGraph

getBaseGraph

Constructor Detail

EventTransactionalGraph

public EventTransactionalGraph(T baseGraph)

Method Detail

stopTransaction

public void stopTransaction(TransactionalGraph.Conclusion conclusion)

Description copied from interface: TransactionalGraph

Stop the current transaction. Specify whether the transaction was successful or not. A failing transaction will rollback all updates to before the transaction was started. If there is currently no open transaction (i.e. no operations on the graph), then calling this method has no effect other than potentially re-initializing data structures.

Specified by:

stopTransaction in interface TransactionalGraph

Parameters:

conclusion - whether or not the current transaction was successful

commit

public void commit()

A commit only fires the event queue on successful operation. If the commit operation to the underlying graph fails, the event queue will not fire and the queue will not be reset.

Specified by:

commit in interface TransactionalGraph

rollback

public void rollback()

A rollback only resets the event queue on successful operation. If the rollback operation to the underlying graph fails, the event queue will not be reset.

Specified by:

rollback in interface TransactionalGraph