org.granite.tide.data
Class AbstractDataDispatcher

java.lang.Object
  org.granite.tide.data.AbstractDataDispatcher

All Implemented Interfaces:

DataDispatcher

Direct Known Subclasses:

DefaultDataDispatcher, JMSDataDispatcher

public abstract class AbstractDataDispatcher
extends Object
implements DataDispatcher

Base implementation for data update dispatchers. It should be built at beginning of each request during initialization of DataContext. The dispatch is a three step process :

• Initialization in the constructor
• observe() builds the server selector depending on the data that are processed
• publish() handles the actual publishing

Actual implementations should only override changeDataSelector and publishUpdate/

Author:

William Drai

See Also:

DataDispatcher, DataContext

Field Summary

protected String	clientId
protected boolean	enabled
protected DataTopicParams	paramsProvider
protected String	sessionId
protected String	subscriptionId
protected String	topicName

Fields inherited from interface org.granite.tide.data.DataDispatcher

GDS_SESSION_ID, SERVER_DISPATCHER_GDS_SESSION_ID, TIDE_DATA_SUBTOPIC, TIDE_DATA_TYPE_KEY, TIDE_DATA_TYPE_VALUE

Constructor Summary

AbstractDataDispatcher(String topicName, Class<? extends DataTopicParams> dataTopicParamsClass)

Method Summary

protected abstract void	changeDataSelector(String dataSelector)
void	observe()
void	publish(Object[][] dataUpdates)
protected abstract void	publishUpdate(Map<String,String> params, Object body)

Methods inherited from class java.lang.Object

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

Field Detail

enabled

protected boolean enabled

topicName

protected String topicName

paramsProvider

protected DataTopicParams paramsProvider

sessionId

protected String sessionId

clientId

protected String clientId

subscriptionId

protected String subscriptionId

Constructor Detail

AbstractDataDispatcher

public AbstractDataDispatcher(String topicName,
                              Class<? extends DataTopicParams> dataTopicParamsClass)

Method Detail

observe

public void observe()

Specified by:

observe in interface DataDispatcher

changeDataSelector

protected abstract void changeDataSelector(String dataSelector)

publish

public void publish(Object[][] dataUpdates)

Specified by:

publish in interface DataDispatcher

publishUpdate

protected abstract void publishUpdate(Map<String,String> params,
                                      Object body)