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This is the master POM file for Sun's Implementation of
the JSF 1.2 Specification.
The newest version!
/*
* $Id: VariableResolverChainWrapper.java,v 1.16.4.4 2010/05/21 17:55:32 edburns Exp $
*/
/*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
*
* Copyright 1997-2007 Sun Microsystems, Inc. All rights reserved.
*
* The contents of this file are subject to the terms of either the GNU
* General Public License Version 2 only ("GPL") or the Common Development
* and Distribution License("CDDL") (collectively, the "License"). You
* may not use this file except in compliance with the License. You can obtain
* a copy of the License at https://glassfish.dev.java.net/public/CDDL+GPL.html
* or glassfish/bootstrap/legal/LICENSE.txt. See the License for the specific
* language governing permissions and limitations under the License.
*
* When distributing the software, include this License Header Notice in each
* file and include the License file at glassfish/bootstrap/legal/LICENSE.txt.
* Sun designates this particular file as subject to the "Classpath" exception
* as provided by Sun in the GPL Version 2 section of the License file that
* accompanied this code. If applicable, add the following below the License
* Header, with the fields enclosed by brackets [] replaced by your own
* identifying information: "Portions Copyrighted [year]
* [name of copyright owner]"
*
* Contributor(s):
*
* If you wish your version of this file to be governed by only the CDDL or
* only the GPL Version 2, indicate your decision by adding "[Contributor]
* elects to include this software in this distribution under the [CDDL or GPL
* Version 2] license." If you don't indicate a single choice of license, a
* recipient has the option to distribute your version of this file under
* either the CDDL, the GPL Version 2 or to extend the choice of license to
* its licensees as provided above. However, if you add GPL Version 2 code
* and therefore, elected the GPL Version 2 license, then the option applies
* only if the new code is made subject to such option by the copyright
* holder.
*/
package com.sun.faces.el;
import javax.el.ELContext;
import javax.el.ELException;
import javax.el.ELResolver;
import javax.el.PropertyNotFoundException;
import javax.faces.context.FacesContext;
import javax.faces.el.EvaluationException;
import javax.faces.el.VariableResolver;
import java.beans.FeatureDescriptor;
import java.util.*;
import com.sun.faces.util.MessageUtils;
import com.sun.faces.util.RequestStateManager;
public class VariableResolverChainWrapper extends ELResolver {
@SuppressWarnings("deprecation")
private VariableResolver legacyVR = null;
@SuppressWarnings("deprecation")
public VariableResolverChainWrapper(VariableResolver variableResolver) {
this.legacyVR = variableResolver;
}
public void setWrapped(VariableResolver newVR) {
this.legacyVR = newVR;
}
@Override
@SuppressWarnings("deprecation")
public Object getValue(ELContext context, Object base, Object property)
throws ELException {
// Don't call into the chain unless it's been decorated.
if (legacyVR instanceof ChainAwareVariableResolver) {
return null;
}
if (base != null) {
return null;
}
if ( base == null && property == null) {
String message = MessageUtils.getExceptionMessageString
(MessageUtils.NULL_PARAMETERS_ERROR_MESSAGE_ID, "base and property"); // ?????
throw new PropertyNotFoundException(message);
}
context.setPropertyResolved(true);
Object result = null;
FacesContext facesContext = (FacesContext)
context.getContext(FacesContext.class);
String propString = property.toString();
Map stateMap = RequestStateManager.getStateMap(facesContext);
try {
// If we are already in the midst of an expression evaluation
// that touched this resolver...
//noinspection unchecked
List varNames = (List) stateMap.get(RequestStateManager.REENTRANT_GUARD);
if (varNames != null
&& !varNames.isEmpty()
&& varNames.contains(propString)) {
// take no action and return.
context.setPropertyResolved(false);
return null;
}
// Make sure subsequent calls don't take action.
if (varNames == null) {
varNames = new ArrayList();
stateMap.put(RequestStateManager.REENTRANT_GUARD, varNames);
}
varNames.add(propString);
result = legacyVR.resolveVariable(facesContext,
propString);
} catch (EvaluationException ex) {
context.setPropertyResolved(false);
throw new ELException(ex);
} finally {
// Make sure to remove the guard after the call returns
//noinspection unchecked
List varNames = (List) stateMap.get(RequestStateManager.REENTRANT_GUARD);
if (varNames != null && !varNames.isEmpty()) {
varNames.remove(propString);
}
// Make sure that the ELContext "resolved" indicator is set
// in accordance wth the result of the resolution.
context.setPropertyResolved(result != null);
}
return result;
}
@Override
public Class getType(ELContext context, Object base, Object property)
throws ELException {
// Don't call into the chain unless it's been decorated.
if (legacyVR instanceof ChainAwareVariableResolver) {
return null;
}
Object result = getValue(context, base, property);
context.setPropertyResolved(result != null);
if (result != null) {
return result.getClass();
}
return null;
}
@Override
public void setValue(ELContext context, Object base, Object property,
Object val) throws ELException {
// Don't call into the chain unless it's been decorated.
if (legacyVR instanceof ChainAwareVariableResolver) {
return;
}
if (null == base && null == property) {
throw new PropertyNotFoundException();
}
}
@Override
public boolean isReadOnly(ELContext context, Object base, Object property)
throws ELException {
// Don't call into the chain unless it's been decorated.
if (legacyVR instanceof ChainAwareVariableResolver) {
return false;
}
if (null == base && null == property) {
throw new PropertyNotFoundException();
}
return false;
}
@Override
public Iterator getFeatureDescriptors(ELContext context,
Object base) {
return null;
}
@Override
public Class getCommonPropertyType(ELContext context, Object base) {
// Don't call into the chain unless it's been decorated.
if (legacyVR instanceof ChainAwareVariableResolver) {
return null;
}
if ( base == null ) {
return String.class;
}
return null;
}
}