/* ====================================================================
* The Apache Software License, Version 1.1
*
* Copyright (c) 2000-2003 The Apache Software Foundation. All rights
* reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. The end-user documentation included with the redistribution,
* if any, must include the following acknowledgment:
* "This product includes software developed by the
* Apache Software Foundation (http://apache.org/)."
* Alternately, this acknowledgment may appear in the software itself,
* if and wherever such third-party acknowledgments normally appear.
*
* 4. The names "Apache" and "Apache Software Foundation", "Tapestry"
* must not be used to endorse or promote products derived from this
* software without prior written permission. For written
* permission, please contact apache@apache.org.
*
* 5. Products derived from this software may not be called "Apache"
* or "Tapestry", nor may "Apache" or "Tapestry" appear in their
* name, without prior written permission of the Apache Software Foundation.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE TAPESTRY CONTRIBUTOR COMMUNITY
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation. For more
* information on the Apache Software Foundation, please see
* <http://www.apache.org/>.
*
*/
package org.apache.tapestry.resource;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.Locale;
import javax.servlet.ServletContext;
import org.apache.commons.lang.builder.HashCodeBuilder;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.tapestry.IResourceLocation;
import org.apache.tapestry.Tapestry;
import org.apache.tapestry.util.LocalizedContextResourceFinder;
import org.apache.tapestry.util.LocalizedResource;
/**
* Implementation of {@link org.apache.tapestry.IResourceLocation}
* for resources found within the web application context.
*
*
* @author Howard Lewis Ship
* @version $Id: ContextResourceLocation.java,v 1.5 2003/06/29 18:05:41 mindbridge Exp $
* @since 3.0
*
**/
public class ContextResourceLocation extends AbstractResourceLocation
{
private static final Log LOG = LogFactory.getLog(ContextResourceLocation.class);
private ServletContext _context;
public ContextResourceLocation(ServletContext context, String path)
{
this(context, path, null);
}
public ContextResourceLocation(ServletContext context, String path, Locale locale)
{
super(path, locale);
_context = context;
}
/**
* Locates the resource using {@link LocalizedContextResourceFinder}
* and {@link ServletContext#getResource(java.lang.String)}.
*
**/
public IResourceLocation getLocalization(Locale locale)
{
LocalizedContextResourceFinder finder = new LocalizedContextResourceFinder(_context);
String path = getPath();
LocalizedResource localizedResource = finder.resolve(path, locale);
if (localizedResource == null)
return null;
String localizedPath = localizedResource.getResourcePath();
Locale pathLocale = localizedResource.getResourceLocale();
if (localizedPath == null)
return null;
if (path.equals(localizedPath))
return this;
return new ContextResourceLocation(_context, localizedPath, pathLocale);
}
public URL getResourceURL()
{
try
{
return _context.getResource(getPath());
}
catch (MalformedURLException ex)
{
LOG.warn(
Tapestry.format(
"ContextResourceLocation.unable-to-reference-context-path",
getPath()),
ex);
return null;
}
}
public String toString()
{
return "context:" + getPath();
}
public int hashCode()
{
HashCodeBuilder builder = new HashCodeBuilder(3265, 143);
builder.append(getPath());
return builder.toHashCode();
}
protected IResourceLocation buildNewResourceLocation(String path)
{
return new ContextResourceLocation(_context, path);
}
}