/*
 * Copyright 1999-2012 Alibaba Group.
 *  
 * Licensed 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 "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
/**
 * (created at 2011-1-18)
 */
package com.alibaba.cobar.parser.ast.expression;

import java.util.Map;

/**
 * an operator with arity of 3
 * 
 * @author <a href="mailto:shuo.qius@alibaba-inc.com">QIU Shuo</a>
 */
public abstract class TernaryOperatorExpression extends AbstractExpression {
    private final Expression first;
    private final Expression second;
    private final Expression third;

    public TernaryOperatorExpression(Expression first, Expression second, Expression third) {
        this.first = first;
        this.second = second;
        this.third = third;
    }

    public Expression getFirst() {
        return first;
    }

    public Expression getSecond() {
        return second;
    }

    public Expression getThird() {
        return third;
    }

    @Override
    public Object evaluationInternal(Map<? extends Object, ? extends Object> parameters) {
        return UNEVALUATABLE;
    }

}