/*
***************************************************************************************
* 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.epl.spec;
import com.espertech.esper.epl.expression.core.ExprNode;
import com.espertech.esper.util.MetaDefItem;
import java.io.Serializable;
/**
* Atom in a specification for property evaluation.
*/
public class PropertyEvalAtom implements MetaDefItem, Serializable {
private final ExprNode splitterExpression;
private final String optionalResultEventType;
private final String optionalAsName;
private final SelectClauseSpecRaw optionalSelectClause;
private final ExprNode optionalWhereClause;
private static final long serialVersionUID = -7123359550634592847L;
/**
* Ctor.
*
* @param optionalAsName column name assigned, if any
* @param optionalSelectClause select clause, if any
* @param optionalWhereClause where clause, if any
* @param splitterExpression for nested events
* @param optionalResultEventType result event type if split
*/
public PropertyEvalAtom(ExprNode splitterExpression, String optionalResultEventType, String optionalAsName, SelectClauseSpecRaw optionalSelectClause, ExprNode optionalWhereClause) {
this.splitterExpression = splitterExpression;
this.optionalResultEventType = optionalResultEventType;
this.optionalAsName = optionalAsName;
this.optionalSelectClause = optionalSelectClause;
this.optionalWhereClause = optionalWhereClause;
}
/**
* Returns the column name if assigned.
*
* @return column name
*/
public String getOptionalAsName() {
return optionalAsName;
}
/**
* Returns the select clause if specified.
*
* @return select clause
*/
public SelectClauseSpecRaw getOptionalSelectClause() {
return optionalSelectClause;
}
/**
* Returns the where clause, if specified.
*
* @return filter expression
*/
public ExprNode getOptionalWhereClause() {
return optionalWhereClause;
}
public ExprNode getSplitterExpression() {
return splitterExpression;
}
public String getOptionalResultEventType() {
return optionalResultEventType;
}
}