Package com.aquima.interactions.process.impl

Class EvaluationQueue

java.lang.Object

com.aquima.interactions.process.impl.EvaluationQueue

All Implemented Interfaces:

IEvaluationQueue

public class EvaluationQueue
extends Object
implements IEvaluationQueue

Implementation of the evaluation queue. This queue is implemented as a FIFO queue, and accepts new tasks during the processing of current tasks.

Since:

7.1

Author:

O. Kerpershoek

Field Summary

Fields

Modifier and Type	Field	Description
protected IProcessCaseChangeListener	changeListener
protected boolean	isProcessing
protected EvaluationTask	nextTask
protected INodeHandlerFactory	nodeHandlerFactory
protected ProcessEngine	processEngine
protected ProcessEvaluator	processEvaluator

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	EvaluationQueue(ProcessEngine engine, ProcessEvaluator evaluator)
protected	EvaluationQueue(ProcessEngine engine, ProcessEvaluator evaluator, INodeHandlerFactory nodeHandlerFactory)

Method Summary

Modifier and Type	Method	Description
void	addFirstTask(ITaskModel taskModel)	Adds the given task as the first element to the queue.
void	addNode(IProcessNodeDefinition node, ITaskModel parent)	Add a node from a process to the evaluation queue.
void	addTask(ITaskModel taskModel)	Add a task to the evaluation queue, so it will be evaluated, and the process will continue from that task if needed.
void	cancelTask(ITaskModel task)	This method may be invoked to cancel a task.
protected void	cancelTask(ITaskModel task, TaskStatusType status)
void	clearSchedulingHistory()
protected void	expireTask(ITaskModel task)
protected void	setChangeListener(IProcessCaseChangeListener changeListener)
protected boolean	shouldExpire(ITaskModel taskModel, IProcessNodeDefinition node, DateTimeValue currentTime)
protected void	start(DateTimeValue currentTime)

Methods inherited from class java.lang.Object

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

Field Details

processEvaluator

protected ProcessEvaluator processEvaluator

processEngine

protected ProcessEngine processEngine

nodeHandlerFactory

protected INodeHandlerFactory nodeHandlerFactory

isProcessing

protected boolean isProcessing

nextTask

protected EvaluationTask nextTask

changeListener

protected IProcessCaseChangeListener changeListener

Constructor Details

EvaluationQueue

protected EvaluationQueue(ProcessEngine engine,
 ProcessEvaluator evaluator)

EvaluationQueue

protected EvaluationQueue(ProcessEngine engine,
 ProcessEvaluator evaluator,
 INodeHandlerFactory nodeHandlerFactory)

Method Details

start

protected void start(DateTimeValue currentTime)

shouldExpire

protected boolean shouldExpire(ITaskModel taskModel,
 IProcessNodeDefinition node,
 DateTimeValue currentTime)

addNode

public void addNode(IProcessNodeDefinition node,
 ITaskModel parent)

Description copied from interface: IEvaluationQueue

Add a node from a process to the evaluation queue. this method should be invoked for nodes that have not yet been processed.

Specified by:

addNode in interface IEvaluationQueue

Parameters:

node - The node that should be scheduled and processed.

parent - The parent task of the node (should never be null).

addTask

public void addTask(ITaskModel taskModel)

Description copied from interface: IEvaluationQueue

Add a task to the evaluation queue, so it will be evaluated, and the process will continue from that task if needed.

Specified by:

addTask in interface IEvaluationQueue

Parameters:

taskModel - The task that should be evaluated.

addFirstTask

public void addFirstTask(ITaskModel taskModel)

Description copied from interface: IEvaluationQueue

Adds the given task as the first element to the queue. Duplicates will be removed from the queue.

Specified by:

addFirstTask in interface IEvaluationQueue

Parameters:

taskModel - the task that should be evaluated.

clearSchedulingHistory

public void clearSchedulingHistory()

expireTask

protected void expireTask(ITaskModel task)

cancelTask

public void cancelTask(ITaskModel task)

Description copied from interface: IEvaluationQueue

This method may be invoked to cancel a task. The task will be marked as canceled, and will be removed from the queue (if needed). If the task is a process or group task, the cancelTask method will also (automatically) be invoked for any child task that has not yet been completed.

Specified by:

cancelTask in interface IEvaluationQueue

Parameters:

task - The task that needs to be canceled.

cancelTask

protected void cancelTask(ITaskModel task,
 TaskStatusType status)

setChangeListener

protected void setChangeListener(IProcessCaseChangeListener changeListener)