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'rapiddweller Script' is an open source software library for resolving Java-like script expressions, forked from Databene Scripts written by Volker Bergmann.

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/*
 * Copyright (C) 2011-2014 Volker Bergmann ([email protected]).
 * All rights reserved.
 *
 * 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.
 */
package com.rapiddweller.script.expression;

import com.rapiddweller.commons.Context;
import com.rapiddweller.script.Expression;

/**
 * Expression that represents and returns a constant value.

 * 

 * Created: 18.06.2007 17:38:58
 * @author Volker Bergmann
 */
public class ConstantExpression implements Expression {

    private E value;

    public ConstantExpression(E value) {
        this.value = value;
    }

    public E getValue() {
        return value;
    }

    public void setValue(E value) {
        this.value = value;
    }

    @Override
	public E evaluate(Context context) {
        return value;
    }
    
    @Override
	public boolean isConstant() {
        return true;
    }
    
    @Override
    public String toString() {
    	return String.valueOf(value);
    }
    
}