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Complex event processing and event series analysis component
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/*
***************************************************************************************
* 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.client.soda;
import java.io.StringWriter;
/**
* Returns true for insert stream and false for remove stream, same as the "istream()" builtin function.
*/
public class IStreamBuiltinExpression extends ExpressionBase {
private static final long serialVersionUID = 2143750940825366959L;
/**
* Ctor.
*/
public IStreamBuiltinExpression() {
}
public ExpressionPrecedenceEnum getPrecedence() {
return ExpressionPrecedenceEnum.UNARY;
}
public void toPrecedenceFreeEPL(StringWriter writer) {
writer.write("istream()");
}
}