org.apache.jasper.el.ExpressionImpl Maven / Gradle / Ivy

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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 "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 org.apache.jasper.el;

import javax.el.ELContext;
import javax.el.ExpressionFactory;
import javax.el.ValueExpression;
import javax.servlet.jsp.el.ELException;
import javax.servlet.jsp.el.Expression;
import javax.servlet.jsp.el.VariableResolver;

public final class ExpressionImpl extends Expression {

	private final ValueExpression ve;
	private final ExpressionFactory factory;
	
	public ExpressionImpl(ValueExpression ve, ExpressionFactory factory) {
		this.ve = ve;
		this.factory = factory;
	}

	public Object evaluate(VariableResolver vResolver) throws ELException {
		ELContext ctx = new ELContextImpl(new ELResolverImpl(vResolver, factory));
		return ve.getValue(ctx);
	}

}