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/*****************************************************************
 *   Licensed to the Apache Software Foundation (ASF) under one
 *  or more contributor license agreements.  See the NOTICE file
 *  distributed with this work for additional information
 *  regarding copyright ownership.  The ASF licenses this file
 *  to you under the Apache License, Version 2.0 (the
 *  "License"); you may not use this file except in compliance
 *  with the License.  You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing,
 *  software distributed under the License is distributed on an
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 *  specific language governing permissions and limitations
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package org.apache.cayenne.ejbql.parser;

public class EJBQLJoin extends SimpleNode {

    public EJBQLJoin(int id) {
        super(id);
    }

    public String getLeftHandSideId() {
        int len = getChildrenCount();
        if (len < 1) {
            return null;
        }

        EJBQLPath path = (EJBQLPath) getChild(0);
        EJBQLIdentifier lhsId = (EJBQLIdentifier) path.getChild(0);
        return lhsId.getText();
    }

    public String getRightHandSideId() {
        int len = getChildrenCount();
        if (len < 2) {
            return null;
        }

        return jjtGetChild(len - 1).getText();
    }
}