/*
* Copyright (c) 1998-2011 Caucho Technology -- all rights reserved
*
* This file is part of Resin(R) Open Source
*
* Each copy or derived work must preserve the copyright notice and this
* notice unmodified.
*
* Resin Open Source is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* Resin Open Source is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, or any warranty
* of NON-INFRINGEMENT. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License
* along with Resin Open Source; if not, write to the
*
* Free Software Foundation, Inc.
* 59 Temple Place, Suite 330
* Boston, MA 02111-1307 USA
*
* @author Scott Ferguson
*/
package javax.el;
import java.beans.FeatureDescriptor;
import java.util.ArrayList;
import java.util.Enumeration;
import java.util.Iterator;
import java.util.ResourceBundle;
import java.util.logging.Logger;
/**
* Resolves properties based on resourceBundles.
*/
public class ResourceBundleELResolver extends ELResolver {
private final static Logger log
= Logger.getLogger(ResourceBundleELResolver.class.getName());
public ResourceBundleELResolver()
{
}
@Override
public Class<?> getCommonPropertyType(ELContext context, Object base)
{
if (base instanceof ResourceBundle)
return String.class;
else
return null;
}
@Override
public Iterator getFeatureDescriptors(ELContext context, Object base)
{
if (! (base instanceof ResourceBundle))
return null;
ResourceBundle bundle = (ResourceBundle) base;
ArrayList<FeatureDescriptor> list = new ArrayList<FeatureDescriptor>();
Enumeration<String> e = bundle.getKeys();
while (e.hasMoreElements()) {
String key = e.nextElement();
FeatureDescriptor desc = new FeatureDescriptor();
desc.setName(key);
desc.setDisplayName(key);
desc.setShortDescription("");
desc.setExpert(false);
desc.setHidden(false);
desc.setPreferred(true);
desc.setValue(ELResolver.TYPE, String.class);
desc.setValue(ELResolver.RESOLVABLE_AT_DESIGN_TIME, Boolean.TRUE);
list.add(desc);
}
return list.iterator();
}
@Override
public Class<?> getType(ELContext context,
Object base,
Object property)
{
if (base instanceof ResourceBundle) {
context.setPropertyResolved(true);
return null;
}
else
return null;
}
@Override
public Object getValue(ELContext context,
Object base,
Object property)
{
if (base instanceof ResourceBundle) {
context.setPropertyResolved(true);
ResourceBundle bundle = (ResourceBundle) base;
String key = String.valueOf(property);
String value = bundle.getString(key);
if (value != null)
return value;
else
return "???" + key + "???";
}
return null;
}
@Override
public boolean isReadOnly(ELContext context,
Object base,
Object property)
{
if (base instanceof ResourceBundle) {
context.setPropertyResolved(true);
return true;
}
return true;
}
@Override
public void setValue(ELContext context,
Object base,
Object property,
Object value)
{
if (base instanceof ResourceBundle) {
context.setPropertyResolved(true);
throw new PropertyNotWritableException(String.valueOf(base));
}
}
}