| /* |
| * 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.cocoon.portal.event.aspect.impl; |
| |
| import java.util.Iterator; |
| |
| import org.apache.avalon.framework.activity.Disposable; |
| 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.environment.ObjectModelHelper; |
| import org.apache.cocoon.environment.Request; |
| import org.apache.cocoon.portal.PortalService; |
| import org.apache.cocoon.portal.event.Event; |
| import org.apache.cocoon.portal.event.EventManager; |
| import org.apache.cocoon.portal.event.aspect.EventAspect; |
| import org.apache.cocoon.portal.event.aspect.EventAspectContext; |
| import org.apache.cocoon.portal.impl.PageLabelManager; |
| |
| /** |
| * Converts links generated by the PageLabelLinkService into events and publishes them. |
| * Used in conjunction with the PageLabelLinkService, links generated from the layout |
| * portal.xml will be based upon the names of the named items. |
| * |
| * @author Ralph Goers |
| * |
| * @version CVS $Id: $ |
| */ |
| public class PageLabelEventAspect |
| extends AbstractLogEnabled |
| implements EventAspect, ThreadSafe, Serviceable, Disposable { |
| |
| protected ServiceManager manager; |
| |
| protected PageLabelManager labelManager; |
| |
| /** |
| * @see org.apache.avalon.framework.service.Serviceable#service(org.apache.avalon.framework.service.ServiceManager) |
| */ |
| public void service(ServiceManager manager) throws ServiceException { |
| this.manager = manager; |
| if ( this.manager.hasService(PageLabelManager.ROLE ) ) { |
| this.labelManager = (PageLabelManager)manager.lookup(PageLabelManager.ROLE); |
| } |
| } |
| |
| /** |
| * @see org.apache.avalon.framework.activity.Disposable#dispose() |
| */ |
| public void dispose() { |
| if (this.manager != null) { |
| if (this.labelManager != null) { |
| this.manager.release(this.labelManager); |
| this.labelManager = null; |
| } |
| this.manager = null; |
| } |
| } |
| |
| /** |
| * @see org.apache.cocoon.portal.event.aspect.EventAspect#process(org.apache.cocoon.portal.event.aspect.EventAspectContext, org.apache.cocoon.portal.PortalService) |
| */ |
| public void process(EventAspectContext context, PortalService service) { |
| if (this.labelManager != null) { |
| final EventManager publisher = service.getComponentManager().getEventManager(); |
| final Request request = ObjectModelHelper.getRequest(context.getObjectModel()); |
| final String parameterName = this.labelManager.getRequestParameterName(); |
| final boolean useUrlPath = this.labelManager.isUrlPath(); |
| |
| String label = (useUrlPath) ? request.getSitemapURI() : request.getParameter(parameterName); |
| |
| // The pageLabel must be single valued |
| if (label != null) { |
| String previous = this.labelManager.getPreviousLabel(); |
| if (previous != null && previous.equals(label) ) { |
| // Already on this page. Don't publish the pageLabel events |
| } else { |
| Iterator iter = this.labelManager.getPageLabelEvents(label).iterator(); |
| // Publish all the events for this page label. |
| while (iter.hasNext()) { |
| Event event = (Event) iter.next(); |
| publisher.send(event); |
| } |
| // return; |
| } |
| } |
| } |
| |
| context.invokeNext( service ); |
| } |
| } |