org.oddjob.state

Class JoinJob

java.lang.Object

org.oddjob.framework.BaseComponent

org.oddjob.framework.BasePrimary

org.oddjob.framework.StructuralJob<Runnable>

org.oddjob.state.JoinJob

All Implemented Interfaces:

Serializable, Runnable, ArooaContextAware, ArooaSessionAware, Forceable, PropertyChangeNotifier, Iconic, LogEnabled, Resetable, Stateful, Stoppable, Structural

public class JoinJob
extends StructuralJob<Runnable>

Description

Waits for a COMPLETE state from it's child job before allowing the thread of execution to continue.

Example

An join that waits for two triggers. In this example another trigger to run the last job might be a better solution because it wouldn't hog a thread - but there are situations when join is just simpler.

<oddjob>
    <job>
        <sequential>
            <jobs>
                <folder>
                    <jobs>
                        <state:flag id="apples" xmlns:state="http://rgordon.co.uk/oddjob/state"/>
                        <state:flag id="oranges" xmlns:state="http://rgordon.co.uk/oddjob/state"/>
                    </jobs>
                </folder>
                <state:join id="our-join" xmlns:state="http://rgordon.co.uk/oddjob/state">
                    <job>
                        <sequential>
                            <jobs>
                                <scheduling:trigger newOnly="true" on="${apples}" xmlns:scheduling="http://rgordon.co.uk/oddjob/scheduling">
                                    <job>
                                        <echo>Apples</echo>
                                    </job>
                                </scheduling:trigger>
                                <scheduling:trigger newOnly="true" on="${oranges}" xmlns:scheduling="http://rgordon.co.uk/oddjob/scheduling">
                                    <job>
                                        <echo>Oranges</echo>
                                    </job>
                                </scheduling:trigger>
                            </jobs>
                        </sequential>
                    </job>
                </state:join>
                <echo id="last-job">And that's that!</echo>
            </jobs>
        </sequential>
    </job>
</oddjob>

See Also:

Serialized Form

Author:

Rob Gordon

Field Summary

Fields inherited from class org.oddjob.framework.StructuralJob

childHelper, childStateReflector, destroy, stop, structuralState

Constructor Summary

Constructors

Constructor and Description
JoinJob()

Method Summary

Methods

Modifier and Type	Method and Description
protected void	execute() Execute this job.
protected StateOperator	getInitialStateOp() Subclasses must provide the StateOperator that will decide how to evaluate the children's state.
long	getTimeout()
void	setJob(Runnable child) Set the child job.
void	setTimeout(long timeout)

Methods inherited from class org.oddjob.framework.StructuralJob

addStructuralListener, fireDestroyedState, force, getStateChanger, hardReset, iconHelper, isStop, onDestroy, onHardReset, onReset, onSoftReset, onStop, removeStructuralListener, run, softReset, startChildStateReflector, stateHandler, stop

Methods inherited from class org.oddjob.framework.BasePrimary

configure, getName, logger, logger, loggerName, save, setName, toString

Methods inherited from class org.oddjob.framework.BaseComponent

addIconListener, addPropertyChangeListener, addStateListener, configure, destroy, firePropertyChange, getArooaSession, iconForId, initialise, lastStateEvent, onConfigured, onInitialised, removeIconListener, removePropertyChangeListener, removeStateListener, save, setArooaContext, setArooaSession

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.oddjob.Stateful

addStateListener, lastStateEvent, removeStateListener

Constructor Detail

JoinJob

public JoinJob()

Method Detail

setJob

public void setJob(Runnable child)

Set the child job.

Property: job

Description: The child job.

Required: No, but pointless if missing.

Parameters:

child - A child

execute

protected void execute()
                throws InterruptedException

Description copied from class: StructuralJob

Execute this job.

Specified by:

execute in class StructuralJob<Runnable>

Throws:

InterruptedException

getInitialStateOp

protected StateOperator getInitialStateOp()

Description copied from class: StructuralJob

Subclasses must provide the StateOperator that will decide how to evaluate the children's state.

Specified by:

getInitialStateOp in class StructuralJob<Runnable>

Returns:

A State Operator. Must not be null.

getTimeout

public long getTimeout()

setTimeout

public void setTimeout(long timeout)