/*
***************************************************************************************
* 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.declexpr;
import com.espertech.esper.epl.expression.core.ExprNode;
import com.espertech.esper.epl.expression.core.ExprValidationException;
import com.espertech.esper.epl.spec.ExpressionDeclItem;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
/**
* Expression instance as declared elsewhere.
* <p>
* (1) Statement parse: Expression tree from expression body gets deep-copied.
* (2) Statement create (lifecyle event): Subselect visitor compiles Subselect-list
* (3) Statement start:
* a) event types of each stream determined
* b) subselects filter expressions get validated and subselect started
* (4) Remaining expressions get validated
*/
public interface ExprDeclaredNode extends ExprNode {
public List<ExprNode> getChainParameters();
public ExpressionDeclItem getPrototype();
public LinkedHashMap<String, Integer> getOuterStreamNames(Map<String, Integer> outerStreamNames) throws ExprValidationException;
public ExprNode getBody();
}