org.metawidget.config.impl.ServletResourceResolver Maven / Gradle / Ivy
// Metawidget (licensed under LGPL)
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License, or (at your option) any later version.
//
// This library 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. See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
package org.metawidget.config.impl;
import java.io.InputStream;
import java.net.URL;
import javax.servlet.ServletContext;
import org.metawidget.inspector.iface.InspectorException;
/**
* Specialized ResourceResolver for Servlets.
*
* Resolves references by looking in /WEB-INF/ first. Defined here, rather than in
* org.metawidget.jsp, because needs to be shared by various Web-based frameworks
* including GWT.
*
* @author Richard Kennard
*/
public class ServletResourceResolver
extends SimpleResourceResolver {
//
// Private members
//
private ServletContext mContext;
//
// Constructor
//
public ServletResourceResolver( ServletContext context ) {
mContext = context;
}
//
// Protected methods
//
/**
* Overridden to try /WEB-INF/ first.
*/
@Override
public InputStream openResource( String resource ) {
try {
URL url = mContext.getResource( "/WEB-INF/" + resource );
if ( url != null ) {
return url.openStream();
}
} catch ( Exception e ) {
throw InspectorException.newException( e );
}
return super.openResource( resource );
}
}