org.mapfish.print.processor

Class ProcessorExecutionContext

java.lang.Object

org.mapfish.print.processor.ProcessorExecutionContext

public final class ProcessorExecutionContext
extends java.lang.Object

Contains information shared across all nodes being executed.

Constructor Summary

Constructors

Constructor and Description
ProcessorExecutionContext(Values values) Constructor.

Method Summary

Methods

Modifier and Type	Method and Description
boolean	allAreFinished(java.util.List<ProcessorGraphNode<?,?>> processorNodes) Verify that all processors have finished executing atomically (within the same lock as finished(ProcessorGraphNode) and isFinished(ProcessorGraphNode) is within.
void	cancel() Set a cancel flag.
void	finished(ProcessorGraphNode processorGraphNode) Flag that the processor has completed execution.
AbstractProcessor.Context	getContext()
Values	getValues()
boolean	isFinished(ProcessorGraphNode processorGraphNode) Return true if the processor of the node has previously been executed.
boolean	isRunning(ProcessorGraphNode processorGraphNode) Return true if the processor of the node is currently being executed.
boolean	tryStart(ProcessorGraphNode processorGraphNode) Try to start the node of a processor.

Methods inherited from class java.lang.Object

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

Constructor Detail

ProcessorExecutionContext

public ProcessorExecutionContext(Values values)

Constructor.

Parameters:

values - the values object.

Method Detail

getValues

public Values getValues()

tryStart

public boolean tryStart(ProcessorGraphNode processorGraphNode)

Try to start the node of a processor. In case the processor is already running, has already finished or if not all requirements have finished, the processor can not start. If the above conditions are fulfilled, the processor is added to the list of running processors, and is expected to be started from the caller.

Parameters:

processorGraphNode - the node that should start.

Returns:

if the node of the processor can be started.

isRunning

public boolean isRunning(ProcessorGraphNode processorGraphNode)

Return true if the processor of the node is currently being executed.

Parameters:

processorGraphNode - the node to test.

isFinished

public boolean isFinished(ProcessorGraphNode processorGraphNode)

Return true if the processor of the node has previously been executed.

Parameters:

processorGraphNode - the node to test.

finished

public void finished(ProcessorGraphNode processorGraphNode)

Flag that the processor has completed execution.

Parameters:

processorGraphNode - the node that has finished.

allAreFinished

public boolean allAreFinished(java.util.List<ProcessorGraphNode<?,?>> processorNodes)

Verify that all processors have finished executing atomically (within the same lock as finished(ProcessorGraphNode) and isFinished(ProcessorGraphNode) is within.

Parameters:

processorNodes - the node to check for completion.

cancel

public void cancel()

Set a cancel flag. All processors are supposed to check this flag frequently and terminate the execution if requested.

getContext

public AbstractProcessor.Context getContext()