/*
* Copyright (C) 2007 Sun Microsystems, Inc. All rights reserved. Use is
* subject to license terms.
*/
package org.jdesktop.el.impl;
import org.jdesktop.el.ELContext;
import org.jdesktop.el.ExpressionFactory;
import org.jdesktop.el.MethodExpression;
import org.jdesktop.el.ValueExpression;
import org.jdesktop.el.impl.lang.ExpressionBuilder;
import org.jdesktop.el.impl.lang.ELSupport;
import org.jdesktop.el.impl.util.MessageFactory;
/**
* @see javax.el.ExpressionFactory
*
* @author Jacob Hookom [jacob@hookom.net]
* @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);
}
}