/*
***************************************************************************************
* Copyright (C) 2006 EsperTech, Inc. All rights reserved. *
* http://www.espertech.com/esper *
* http://www.espertech.com *
* ---------------------------------------------------------------------------------- *
* The software in this package is published under the terms of the GPL license *
* a copy of which has been included with this distribution in the license.txt file. *
***************************************************************************************
*/
package com.espertech.esper.view.internal;
import com.espertech.esper.client.EventBean;
import com.espertech.esper.client.EventType;
import com.espertech.esper.collection.FlushedEventBuffer;
import com.espertech.esper.core.service.EPStatementDispatch;
import com.espertech.esper.view.ViewSupport;
import java.util.Iterator;
/**
* View to dispatch for a single stream (no join).
*/
public final class SingleStreamDispatchView extends ViewSupport implements EPStatementDispatch {
private boolean hasData = false;
private FlushedEventBuffer newDataBuffer = new FlushedEventBuffer();
private FlushedEventBuffer oldDataBuffer = new FlushedEventBuffer();
/**
* Ctor.
*/
public SingleStreamDispatchView() {
}
public final EventType getEventType() {
return parent.getEventType();
}
public final Iterator<EventBean> iterator() {
return parent.iterator();
}
public final void update(EventBean[] newData, EventBean[] oldData) {
newDataBuffer.add(newData);
oldDataBuffer.add(oldData);
hasData = true;
}
public void execute() {
if (hasData) {
hasData = false;
this.updateChildren(newDataBuffer.getAndFlush(), oldDataBuffer.getAndFlush());
}
}
}