org.mule.routing
Class Foreach

java.lang.Object
  org.mule.processor.AbstractMuleObjectOwner<MessageProcessor>
      org.mule.processor.AbstractMessageProcessorOwner
          org.mule.routing.Foreach

All Implemented Interfaces:

AnnotatedObject, FlowConstructAware, MuleContextAware, Disposable, Initialisable, Lifecycle, Startable, Stoppable, InterceptingMessageProcessor, MessageProcessor, MessageSource

public class Foreach
extends AbstractMessageProcessorOwner
implements Initialisable, InterceptingMessageProcessor

` * The Foreach MessageProcessor allows iterating over a collection payload, or any collection obtained by an expression, generating a message for each element.

The number of the message being processed is stored in #[variable:counter] and the root message is store in #[variable:rootMessage]. Both variables may be renamed by means of setCounterVariableName(String) and setRootMessageVariableName(String).

Defining a groupSize greater than one, allows iterating over collections of elements of the specified size.

The MuleEvent sent to the next message processor is the same that arrived to foreach.

Field Summary

static String	COUNTER_PROPERTY
protected Log	logger
static String	ROOT_MESSAGE_PROPERTY

Fields inherited from class org.mule.processor.AbstractMuleObjectOwner

flowConstruct, muleContext

Fields inherited from interface org.mule.api.lifecycle.Initialisable

PHASE_NAME

Fields inherited from interface org.mule.api.lifecycle.Startable

PHASE_NAME

Fields inherited from interface org.mule.api.lifecycle.Stoppable

PHASE_NAME

Fields inherited from interface org.mule.api.lifecycle.Disposable

PHASE_NAME

Fields inherited from interface org.mule.api.AnnotatedObject

PROPERTY_NAME

Constructor Summary

Foreach()

Method Summary

protected List<MessageProcessor>	getOwnedMessageProcessors()
void	initialise() Method used to perform any initialisation work.
MuleEvent	process(MuleEvent event) Invokes the MessageProcessor.
protected MuleEvent	processNext(MuleEvent event)
void	setBatchSize(int batchSize)
void	setCollectionExpression(String expression)
void	setCounterVariableName(String counterVariableName)
void	setListener(MessageProcessor listener) Set the MessageProcessor listener on a message source which will be invoked when a message is received or generated.
void	setMessageProcessors(List<MessageProcessor> messageProcessors)
void	setRootMessageVariableName(String rootMessageVariableName)

Methods inherited from class org.mule.processor.AbstractMessageProcessorOwner

getAnnotation, getAnnotations, getOwnedObjects, setAnnotations

Methods inherited from class org.mule.processor.AbstractMuleObjectOwner

dispose, getFlowConstruct, getMuleContext, setFlowConstruct, setMuleContext, start, stop

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.mule.api.lifecycle.Startable

start

Methods inherited from interface org.mule.api.lifecycle.Stoppable

stop

Methods inherited from interface org.mule.api.lifecycle.Disposable

dispose

Methods inherited from interface org.mule.api.context.MuleContextAware

setMuleContext

Methods inherited from interface org.mule.api.construct.FlowConstructAware

setFlowConstruct

Field Detail

ROOT_MESSAGE_PROPERTY

public static final String ROOT_MESSAGE_PROPERTY

See Also:

Constant Field Values

COUNTER_PROPERTY

public static final String COUNTER_PROPERTY

See Also:

Constant Field Values

logger

protected Log logger

Constructor Detail

Foreach

public Foreach()

Method Detail

process

public MuleEvent process(MuleEvent event)
                  throws MuleException

Description copied from interface: MessageProcessor

Invokes the MessageProcessor.

Specified by:

process in interface MessageProcessor

Parameters:

event - MuleEvent to be processed

Returns:

optional response MuleEvent

Throws:

MuleException

processNext

protected MuleEvent processNext(MuleEvent event)
                         throws MuleException

Throws:

MuleException

getOwnedMessageProcessors

protected List<MessageProcessor> getOwnedMessageProcessors()

Specified by:

getOwnedMessageProcessors in class AbstractMessageProcessorOwner

setListener

public void setListener(MessageProcessor listener)

Description copied from interface: MessageSource

Set the MessageProcessor listener on a message source which will be invoked when a message is received or generated.

Specified by:

setListener in interface MessageSource

setMessageProcessors

public void setMessageProcessors(List<MessageProcessor> messageProcessors)
                          throws MuleException

Throws:

MuleException

initialise

public void initialise()
                throws InitialisationException

Description copied from interface: Initialisable

Method used to perform any initialisation work. If a fatal error occurs during initialisation an InitialisationException should be thrown, causing the Mule instance to shutdown. If the error is recoverable, say by retrying to connect, a RecoverableException should be thrown. There is no guarantee that by throwing a Recoverable exception that the Mule instance will not shut down.

Specified by:

initialise in interface Initialisable

Overrides:

initialise in class AbstractMuleObjectOwner<MessageProcessor>

Throws:

InitialisationException - if a fatal error occurs causing the Mule instance to shutdown

RecoverableException - if an error occurs that can be recovered from

setCollectionExpression

public void setCollectionExpression(String expression)

setBatchSize

public void setBatchSize(int batchSize)

setRootMessageVariableName

public void setRootMessageVariableName(String rootMessageVariableName)

setCounterVariableName

public void setCounterVariableName(String counterVariableName)