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/*
* $Id: ImplicitObjectELResolverForJsp.java,v 1.8 2006/01/13 19:19:16 rlubke Exp $
*/
/*
* The contents of this file are subject to the terms
* of the Common Development and Distribution License
* (the License). You may not use this file except in
* compliance with the License.
*
* You can obtain a copy of the License at
* https://javaserverfaces.dev.java.net/CDDL.html or
* legal/CDDLv1.0.txt.
* See the License for the specific language governing
* permission and limitations under the License.
*
* When distributing Covered Code, include this CDDL
* Header Notice in each file and include the License file
* at legal/CDDLv1.0.txt.
* If applicable, add the following below the CDDL Header,
* with the fields enclosed by brackets [] replaced by
* your own identifying information:
* "Portions Copyrighted [year] [name of copyright owner]"
*
* [Name of File] [ver.__] [Date]
*
* Copyright 2005 Sun Microsystems Inc. All Rights Reserved
*/
package com.sun.faces.el;
import java.beans.FeatureDescriptor;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Iterator;
import javax.el.ELContext;
import javax.el.ELException;
import javax.el.PropertyNotFoundException;
import javax.el.PropertyNotWritableException;
import javax.faces.component.UIViewRoot;
import javax.faces.context.FacesContext;
import com.sun.faces.util.Util;
import com.sun.faces.util.MessageUtils;
public class ImplicitObjectELResolverForJsp extends ImplicitObjectELResolver {
public ImplicitObjectELResolverForJsp() {
}
public Object getValue(ELContext context,Object base, Object property)
throws ELException {
// variable resolution is a special case of property resolution
// where the base is null.
if (base != null) {
return null;
}
if (property == null) {
String message = MessageUtils.getExceptionMessageString
(MessageUtils.NULL_PARAMETERS_ERROR_MESSAGE_ID);
message = message + " base " + base + " property " + property;
throw new PropertyNotFoundException(message);
}
FacesContext facesContext =
(FacesContext)context.getContext(FacesContext.class);
int index = Arrays.binarySearch(IMPLICIT_OBJECTS, property);
if (index < 0) {
return null;
}
switch (index) {
case FACES_CONTEXT:
context.setPropertyResolved(true);
return facesContext;
case VIEW:
context.setPropertyResolved(true);
return facesContext.getViewRoot();
default:
return null;
}
}
public Class getType(ELContext context, Object base, Object property)
throws ELException {
if (base != null) {
return null;
}
if (property == null) {
String message = MessageUtils.getExceptionMessageString
(MessageUtils.NULL_PARAMETERS_ERROR_MESSAGE_ID);
message = message + " base " + base + " property " + property;
throw new PropertyNotFoundException(message);
}
int index = Arrays.binarySearch(IMPLICIT_OBJECTS, property);
if (index < 0) {
return null;
}
switch (index) {
case FACES_CONTEXT:
case VIEW:
context.setPropertyResolved(true);
return null;
default:
return null;
}
}
public void setValue(ELContext context, Object base, Object property,
Object val) throws ELException {
if (base != null) {
return;
}
if (property == null) {
String message = MessageUtils.getExceptionMessageString
(MessageUtils.NULL_PARAMETERS_ERROR_MESSAGE_ID);
message = message + " base " + base + " property " + property;
throw new PropertyNotFoundException(message);
}
int index = Arrays.binarySearch(IMPLICIT_OBJECTS, property);
if (index < 0) {
return;
}
switch (index) {
case FACES_CONTEXT:
throw new PropertyNotWritableException(MessageUtils.getExceptionMessageString
(MessageUtils.OBJECT_IS_READONLY, "facesContext"));
case VIEW:
throw new PropertyNotWritableException(MessageUtils.getExceptionMessageString
(MessageUtils.OBJECT_IS_READONLY, "view"));
default:
}
}
public boolean isReadOnly(ELContext context, Object base, Object property)
throws ELException {
if (base != null) {
return false;
}
if (property == null) {
String message = MessageUtils.getExceptionMessageString
(MessageUtils.NULL_PARAMETERS_ERROR_MESSAGE_ID);
message = message + " base " + base + " property " + property;
throw new PropertyNotFoundException(message);
}
// return value will be ignored unless context.propertyResolved is
// set to true.
int index = Arrays.binarySearch(IMPLICIT_OBJECTS, property);
if (index < 0) {
return false;
}
switch (index) {
case FACES_CONTEXT:
context.setPropertyResolved(true);
return true;
case VIEW:
context.setPropertyResolved(true);
return true;
default:
return false;
}
}
public Iterator getFeatureDescriptors(ELContext context, Object base) {
if (base != null) {
return null;
}
ArrayList list = new ArrayList(2);
list.add(Util.getFeatureDescriptor("facesContext", "facesContext",
"facesContext",false, false, true, FacesContext.class, Boolean.TRUE));
list.add(Util.getFeatureDescriptor("view", "view",
"root",false, false, true, UIViewRoot.class, Boolean.TRUE));
return list.iterator();
}
public Class getCommonPropertyType(ELContext context, Object base) {
if (base != null) {
return null;
}
return String.class;
}
}
