/*
***************************************************************************************
* 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.pattern;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* This class represents an observer expression in the evaluation tree representing an pattern expression.
*/
public class EvalObserverNode extends EvalNodeBase {
protected final EvalObserverFactoryNode factoryNode;
public EvalObserverNode(PatternAgentInstanceContext context, EvalObserverFactoryNode factoryNode) {
super(context);
this.factoryNode = factoryNode;
}
public EvalObserverFactoryNode getFactoryNode() {
return factoryNode;
}
public EvalStateNode newState(Evaluator parentNode,
EvalStateNodeNumber stateNodeNumber, long stateNodeId) {
return new EvalObserverStateNode(parentNode, this);
}
private static final Logger log = LoggerFactory.getLogger(EvalObserverNode.class);
}