org.apache.el.ExpressionFactoryImpl Maven / Gradle / Ivy
/*
* 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.el;
import javax.el.ELContext;
import javax.el.ExpressionFactory;
import javax.el.MethodExpression;
import javax.el.ValueExpression;
import org.apache.el.lang.ELSupport;
import org.apache.el.lang.ExpressionBuilder;
import org.apache.el.util.MessageFactory;
/**
* @see javax.el.ExpressionFactory
*
* @author Jacob Hookom [[email protected]]
* @version $Id: ExpressionFactoryImpl.java 959568 2010-07-01 09:35:23Z markt $
*/
public class ExpressionFactoryImpl extends ExpressionFactory {
/**
*
*/
public ExpressionFactoryImpl() {
super();
}
@Override
public Object coerceToType(Object obj, Class type) {
return ELSupport.coerceToType(obj, type);
}
@Override
public MethodExpression createMethodExpression(ELContext context,
String expression, Class expectedReturnType,
Class[] expectedParamTypes) {
ExpressionBuilder builder = new ExpressionBuilder(expression, context);
return builder.createMethodExpression(expectedReturnType,
expectedParamTypes);
}
@Override
public ValueExpression createValueExpression(ELContext context,
String expression, Class expectedType) {
if (expectedType == null) {
throw new NullPointerException(MessageFactory
.get("error.value.expectedType"));
}
ExpressionBuilder builder = new ExpressionBuilder(expression, context);
return builder.createValueExpression(expectedType);
}
@Override
public ValueExpression createValueExpression(Object instance,
Class expectedType) {
if (expectedType == null) {
throw new NullPointerException(MessageFactory
.get("error.value.expectedType"));
}
return new ValueExpressionLiteral(instance, expectedType);
}
}