/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.lenya.cms.cocoon.source;
import java.io.IOException;
import java.net.MalformedURLException;
import java.util.Map;
import org.apache.avalon.framework.configuration.Configuration;
import org.apache.avalon.framework.configuration.DefaultConfiguration;
import org.apache.avalon.framework.context.Context;
import org.apache.avalon.framework.context.ContextException;
import org.apache.avalon.framework.context.Contextualizable;
import org.apache.avalon.framework.logger.AbstractLogEnabled;
import org.apache.avalon.framework.service.ServiceException;
import org.apache.avalon.framework.service.ServiceManager;
import org.apache.avalon.framework.service.Serviceable;
import org.apache.avalon.framework.thread.ThreadSafe;
import org.apache.cocoon.components.ContextHelper;
import org.apache.cocoon.components.flow.FlowHelper;
import org.apache.cocoon.components.modules.input.JXPathHelper;
import org.apache.cocoon.components.modules.input.JXPathHelperConfiguration;
import org.apache.cocoon.environment.ObjectModelHelper;
import org.apache.cocoon.environment.Request;
import org.apache.excalibur.source.Source;
import org.apache.excalibur.source.SourceException;
import org.apache.excalibur.source.SourceFactory;
import org.apache.lenya.cms.publication.Publication;
import org.apache.lenya.cms.repository.RepositoryException;
import org.apache.lenya.cms.repository.RepositoryUtil;
import org.apache.lenya.cms.repository.Session;
import org.apache.lenya.util.Query;
/**
* A factory for the "lenya" scheme (virtual protocol), which is used to resolve any src="lenya:..."
* attributes in sitemaps. This implementation constructs the path to the source document from the
* page envelope and delegates any further resolving to the "context" source resolver of Cocoon.
*
* @version $Id: LenyaSourceFactory.java 533723 2007-04-30 12:34:26Z andreas $
*/
public class LenyaSourceFactory extends AbstractLogEnabled implements SourceFactory, ThreadSafe,
Contextualizable, Serviceable {
protected static final String SCHEME = "lenya:";
/** fallback if no configuration is available */
protected static final String DEFAULT_DELEGATION_SCHEME = "context:";
protected static final String DEFAULT_DELEGATION_PREFIX = "/"
+ Publication.PUBLICATION_PREFIX_URI;
private Context context;
private ServiceManager manager;
/**
* Used for resolving the object model.
* @see org.apache.avalon.framework.context.Contextualizable#contextualize(org.apache.avalon.framework.context.Context)
*/
public void contextualize(Context _context) throws ContextException {
this.context = _context;
}
/**
* @see org.apache.avalon.framework.service.Serviceable#service(org.apache.avalon.framework.service.ServiceManager)
*/
public void service(ServiceManager _manager) throws ServiceException {
this.manager = _manager;
}
/**
* @see org.apache.excalibur.source.SourceFactory#getSource(java.lang.String, java.util.Map)
*/
public Source getSource(final String location, final Map parameters)
throws MalformedURLException, IOException, SourceException {
String sessionName = null;
String[] uriAndQuery = location.split("\\?");
if (uriAndQuery.length > 1) {
Query query = new Query(uriAndQuery[1]);
sessionName = query.getValue("session");
}
Session session;
try {
session = getSession(sessionName);
} catch (RepositoryException e) {
throw new RuntimeException(e);
}
if (getLogger().isDebugEnabled()) {
getLogger().debug("Creating repository source for URI [" + location + "]");
}
return new RepositorySource(this.manager, location, session, getLogger());
}
protected Session getSession(String sessionName) throws RepositoryException {
Map objectModel = ContextHelper.getObjectModel(this.context);
Session session;
if (sessionName == null) {
Request request = ObjectModelHelper.getRequest(objectModel);
session = RepositoryUtil.getSession(this.manager, request);
} else if (sessionName.equals("usecase")) {
session = getUsecaseSession(objectModel);
} else {
throw new RepositoryException("Invalid session: [" + sessionName + "]");
}
return session;
}
protected Session getUsecaseSession(Map objectModel) throws RepositoryException {
try {
Configuration config = new DefaultConfiguration("foo");
JXPathHelperConfiguration helperConfig = JXPathHelper.setup(config);
Object contextObject = FlowHelper.getContextObject(objectModel);
return (Session) JXPathHelper.getAttribute("usecase/session", config, helperConfig,
contextObject);
} catch (Exception e) {
throw new RepositoryException(e);
}
}
/**
* Does nothing because the delegated factory does this.
* @see org.apache.excalibur.source.SourceFactory#release(org.apache.excalibur.source.Source)
*/
public void release(Source source) {
// do nothing
}
}