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EE4J Compatible Implementation for Jakarta Faces API
/*
* Copyright (c) 1997, 2020 Oracle and/or its affiliates. All rights reserved.
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v. 2.0, which is available at
* http://www.eclipse.org/legal/epl-2.0.
*
* This Source Code may also be made available under the following Secondary
* Licenses when the conditions for such availability set forth in the
* Eclipse Public License v. 2.0 are satisfied: GNU General Public License,
* version 2 with the GNU Classpath Exception, which is available at
* https://www.gnu.org/software/classpath/license.html.
*
* SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0
*/
package com.sun.faces.facelets.tag.composite;
import java.beans.IntrospectionException;
import java.beans.PropertyDescriptor;
import java.lang.reflect.Method;
import com.sun.faces.facelets.util.ReflectionUtil;
import jakarta.el.ELContext;
import jakarta.el.ValueExpression;
import jakarta.faces.FacesException;
import jakarta.faces.context.FacesContext;
/**
* A property descriptor for a composite component attribute.
*/
public class CompositeAttributePropertyDescriptor extends PropertyDescriptor {
public CompositeAttributePropertyDescriptor(String propertyName, Method readMethod, Method writeMethod) throws IntrospectionException {
super(propertyName, readMethod, writeMethod);
}
@Override
public Object getValue(String attributeName) {
Object result = super.getValue(attributeName);
if ("type".equals(attributeName) && null != result && !(result instanceof Class)) {
FacesContext context = FacesContext.getCurrentInstance();
ELContext elContext = context.getELContext();
String classStr = (String) ((ValueExpression) result).getValue(elContext);
if (null != classStr) {
try {
result = ReflectionUtil.forName(classStr);
setValue(attributeName, result);
} catch (ClassNotFoundException ex) {
classStr = "java.lang." + classStr; // NOPMD
boolean throwException = false;
try {
result = ReflectionUtil.forName(classStr);
setValue(attributeName, result);
} catch (ClassNotFoundException ex2) {
throwException = true;
}
if (throwException) {
String message = "Unable to obtain class for " + classStr;
throw new FacesException(message, ex);
}
}
}
}
return result;
}
}