com.infoengine.SAK
Class BasicCheckpointProcessor

java.lang.Object
  com.infoengine.SAK.BasicCheckpointProcessor

All Implemented Interfaces:

CheckpointProcessor

public class BasicCheckpointProcessor

extends Object

implements CheckpointProcessor

Field Summary

private String	chkptRecoverTask
private String	chkptRemoveTask
private String	chkptSaveTask

Constructor Summary

BasicCheckpointProcessor()
Constructs an instance of the Basic Checkpoint Processor.

Method Summary

private boolean	hasChanged(IeCollection collection) Returns true if a collection has changed.
Task	recoverState(String uniqueIdentifier) Recovers the saved state of a task.
void	removeState(String uniqueIdentifier) Removes all state information that might have been saved for a task.
private void	resetChange(IeCollection collection) Resets all change indications in a collection.
void	saveState(String uniqueIdentifier, Task task) Saves the state of a task.

Methods inherited from class java.lang.Object

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

Field Detail

chkptRemoveTask

private String chkptRemoveTask

chkptRecoverTask

private String chkptRecoverTask

chkptSaveTask

private String chkptSaveTask

Constructor Detail

BasicCheckpointProcessor

public BasicCheckpointProcessor()

Constructs an instance of the Basic Checkpoint Processor.

Method Detail

saveState

public void saveState(String uniqueIdentifier,
                      Task task)
               throws IEException

Saves the state of a task.

Specified by:

saveState in interface CheckpointProcessor

Parameters:

uniqueIdentifier - The unique identifier assigned to the task instance whose state is being saved.

task - The task instance.

Throws:

IEException - if the state was not saved successfully.

hasChanged

private boolean hasChanged(IeCollection collection)

Returns true if a collection has changed.

Parameters:

collection - The collection to check for change

Returns:

true if the collection has changed

resetChange

private void resetChange(IeCollection collection)

Resets all change indications in a collection.

Parameters:

collection - The collection to reset

recoverState

public Task recoverState(String uniqueIdentifier)
                  throws IEException

Recovers the saved state of a task.

Specified by:

recoverState in interface CheckpointProcessor

Parameters:

uniqueIdentifier - The unique identifier assigned to the task instance whose state is being recovered.

Returns:

A Task object containing the recovered VDB and context collections.

Throws:

IEException - if the state was not recovered successfully.

removeState

public void removeState(String uniqueIdentifier)
                 throws IEException

Removes all state information that might have been saved for a task. Normally, this method will be called only when a task is complete.

Specified by:

removeState in interface CheckpointProcessor

Parameters:

uniqueIdentifier - The unique identifier assigned to the task instance whose saved state is being removed.

Throws:

IEException - if the state was not removed successfully.