org.mule.transport.polling.watermark

Class WatermarkPollingInterceptor

java.lang.Object

org.mule.transport.polling.MessageProcessorPollingInterceptor

org.mule.transport.polling.watermark.WatermarkPollingInterceptor

Direct Known Subclasses:

SelectorWatermarkPollingInterceptor

public class WatermarkPollingInterceptor
extends MessageProcessorPollingInterceptor

Implementation of MessageProcessorPollingInterceptor that retrieves the current watermark value before the polling flow is executed and updates it when it is finished.

Since:

3.5.0

Field Summary

Fields

Modifier and Type	Field and Description
protected Watermark	watermark

Constructor Summary

Constructors

Constructor and Description
WatermarkPollingInterceptor(Watermark watermark)

Method Summary

Methods

Modifier and Type	Method and Description
void	postProcessRouting(MuleEvent event) Watermark post processing saves the flow variable to the object store
MuleEvent	prepareRouting(MuleEvent sourceEvent, MuleEvent event) Watermark route preparation carries the value from the source event to the flow event
MuleEvent	prepareSourceEvent(MuleEvent event) Watermark source preprocessing puts the watermark value into a flow variable

Methods inherited from class java.lang.Object

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

Field Detail

watermark

protected final Watermark watermark

Constructor Detail

WatermarkPollingInterceptor

public WatermarkPollingInterceptor(Watermark watermark)

Method Detail

prepareSourceEvent

public MuleEvent prepareSourceEvent(MuleEvent event)
                             throws MuleException

Watermark source preprocessing puts the watermark value into a flow variable

Overrides:

prepareSourceEvent in class MessageProcessorPollingInterceptor

Parameters:

event - The event that is about to be sent

Returns:

The event that should be sent. Must not be null

Throws:

MuleException

prepareRouting

public MuleEvent prepareRouting(MuleEvent sourceEvent,
                       MuleEvent event)
                         throws ConfigurationException

Watermark route preparation carries the value from the source event to the flow event

Overrides:

prepareRouting in class MessageProcessorPollingInterceptor

Parameters:

sourceEvent - The event that was returned by the polling processor

event - The event that is about to be sent to the rest of the flow

Returns:

The event that should be sent to the rest of the flow. Must not be null

Throws:

ConfigurationException

postProcessRouting

public void postProcessRouting(MuleEvent event)
                        throws ObjectStoreException

Watermark post processing saves the flow variable to the object store

Overrides:

postProcessRouting in class MessageProcessorPollingInterceptor

Parameters:

event - The event that was routed to the rest of the flow

Throws:

ObjectStoreException