/*
* eXist Open Source Native XML Database
* Copyright (C) 2001-2010 The eXist Project
* http://exist-db.org
*
* This program 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
* of the License, or (at your option) any later version.
*
* This program 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
* $Id$
*/
package org.exist.validation.resolver.unstable;
import java.io.IOException;
import java.io.InputStream;
import java.net.MalformedURLException;
import java.net.URL;
import org.apache.log4j.Logger;
import org.exist.protocolhandler.embedded.EmbeddedInputStream;
import org.exist.protocolhandler.xmldb.XmldbURL;
import org.exist.protocolhandler.xmlrpc.XmlrpcInputStream;
import org.w3c.dom.ls.LSInput;
import org.w3c.dom.ls.LSResourceResolver;
/**
* eXistLSResourceResolver provides a way for applications to redirect
* references to external resource.
*
* To be used by @see javax.xml.validation.Validator
*
* @author Dizzzz (dizzzz@exist-db.org)
*/
public class eXistLSResourceResolver implements LSResourceResolver {
private final static Logger LOG = Logger.getLogger(eXistLSResourceResolver.class);
public LSInput resolveResource(String type, String namespaceURI,
String publicId, String systemId, String baseURI) {
LOG.debug("type=" + type + " namespaceURI=" + namespaceURI
+ " publicId=" + publicId + " systemId=" + systemId
+ " baseURI=" + baseURI);
LSInput lsInput = new eXistLSInput();
try {
final InputStream is = getInputStream(systemId);
lsInput.setByteStream(is);
} catch (final Exception ex) {
LOG.error(ex.getMessage());
lsInput=null;
}
return lsInput;
}
private InputStream getInputStream(String resourcePath) throws MalformedURLException, IOException{
if(resourcePath.startsWith("/db")){
resourcePath="xmldb:exist://"+resourcePath;
}
InputStream is = null;
if(resourcePath.startsWith("xmldb:")){
final XmldbURL xmldbURL = new XmldbURL(resourcePath);
if(xmldbURL.isEmbedded()){
is = new EmbeddedInputStream( xmldbURL );
} else {
is = new XmlrpcInputStream( xmldbURL );
}
} else {
is = new URL(resourcePath).openStream();
}
return is;
}
}