org.apache.el.ExpressionFactoryImpl Maven / Gradle / Ivy
/*
* Copyright 2006 The Apache Software Foundation.
*
* 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 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 $Change: 181177 $$DateTime: 2001/06/26 08:45:09 $$Author: kchung $
*/
public class ExpressionFactoryImpl extends ExpressionFactory {
/**
*
*/
public ExpressionFactoryImpl() {
super();
}
public Object coerceToType(Object obj, Class type) {
return ELSupport.coerceToType(obj, type);
}
public MethodExpression createMethodExpression(ELContext context,
String expression, Class expectedReturnType,
Class[] expectedParamTypes) {
if (expectedParamTypes == null) {
throw new NullPointerException(MessageFactory
.get("error.method.nullParms"));
}
ExpressionBuilder builder = new ExpressionBuilder(expression, context);
return builder.createMethodExpression(expectedReturnType,
expectedParamTypes);
}
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);
}
public ValueExpression createValueExpression(Object instance,
Class expectedType) {
if (expectedType == null) {
throw new NullPointerException(MessageFactory
.get("error.value.expectedType"));
}
return new ValueExpressionLiteral(instance, expectedType);
}
}