org.springframework.webflow.execution.repository.snapshot
Class SerializedFlowExecutionSnapshotFactory

java.lang.Object
  org.springframework.webflow.execution.repository.snapshot.SerializedFlowExecutionSnapshotFactory

All Implemented Interfaces:

FlowExecutionSnapshotFactory

public class SerializedFlowExecutionSnapshotFactory
extends java.lang.Object
implements FlowExecutionSnapshotFactory

A factory that creates new instances of flow execution snapshots based on standard Java serialization.

Author:

Keith Donald, Erwin Vervaet

Constructor Summary

SerializedFlowExecutionSnapshotFactory(FlowExecutionFactory flowExecutionFactory, FlowDefinitionLocator flowDefinitionLocator)
Creates a new serialized flow execution snapshot factory

Method Summary

FlowExecutionSnapshot	createSnapshot(FlowExecution flowExecution) Takes a snapshot of the flow execution.
boolean	getCompress() Returns whether or not the snapshots should be compressed.
FlowExecution	restoreExecution(FlowExecutionSnapshot snapshot, java.lang.String flowId, FlowExecutionKey key, MutableAttributeMap<java.lang.Object> conversationScope, FlowExecutionKeyFactory keyFactory) Restores a flow execution from a previously taken snapshot.
void	setCompress(boolean compress) Set whether or not the snapshots should be compressed.

Methods inherited from class java.lang.Object

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

Constructor Detail

SerializedFlowExecutionSnapshotFactory

public SerializedFlowExecutionSnapshotFactory(FlowExecutionFactory flowExecutionFactory,
                                              FlowDefinitionLocator flowDefinitionLocator)

Creates a new serialized flow execution snapshot factory

Parameters:

flowDefinitionLocator - the flow definition locator

flowExecutionFactory - the flow execution factory

Method Detail

getCompress

public boolean getCompress()

Returns whether or not the snapshots should be compressed.

setCompress

public void setCompress(boolean compress)

Set whether or not the snapshots should be compressed.

createSnapshot

public FlowExecutionSnapshot createSnapshot(FlowExecution flowExecution)
                                     throws SnapshotCreationException

Description copied from interface: FlowExecutionSnapshotFactory

Takes a snapshot of the flow execution.

Specified by:

createSnapshot in interface FlowExecutionSnapshotFactory

Parameters:

flowExecution - the flow execution

Returns:

the new snapshot

Throws:

SnapshotCreationException - if the snapshot could not be created

restoreExecution

public FlowExecution restoreExecution(FlowExecutionSnapshot snapshot,
                                      java.lang.String flowId,
                                      FlowExecutionKey key,
                                      MutableAttributeMap<java.lang.Object> conversationScope,
                                      FlowExecutionKeyFactory keyFactory)
                               throws FlowExecutionRestorationFailureException

Description copied from interface: FlowExecutionSnapshotFactory

Restores a flow execution from a previously taken snapshot.

Specified by:

restoreExecution in interface FlowExecutionSnapshotFactory

Parameters:

snapshot - the previously taken snapshot

flowId - the id of the root flow definition

key - the flow execution key

conversationScope - conversation scope

keyFactory - factory for creating new snapshot keys

Returns:

the restored flow execution

Throws:

FlowExecutionRestorationFailureException - if flow execution restoration fails