| /* |
| * Copyright 1999-2002,2004 The Apache Software Foundation. |
| * |
| * Licensed 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.coplet.adapter.impl; |
| |
| import java.io.IOException; |
| import java.util.ArrayList; |
| import java.util.HashMap; |
| import java.util.List; |
| import java.util.Map; |
| |
| import org.apache.avalon.framework.activity.Disposable; |
| import org.apache.avalon.framework.activity.Initializable; |
| 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.service.ServiceException; |
| import org.apache.avalon.framework.service.ServiceManager; |
| import org.apache.cocoon.ProcessingException; |
| import org.apache.cocoon.components.ContextHelper; |
| import org.apache.cocoon.components.notification.Notifying; |
| import org.apache.cocoon.components.notification.NotifyingBuilder; |
| import org.apache.cocoon.components.source.SourceUtil; |
| import org.apache.cocoon.environment.ObjectModelHelper; |
| import org.apache.cocoon.portal.Constants; |
| import org.apache.cocoon.portal.PortalService; |
| import org.apache.cocoon.portal.coplet.CopletInstanceData; |
| import org.apache.cocoon.portal.event.CopletInstanceEvent; |
| import org.apache.cocoon.portal.event.Event; |
| import org.apache.cocoon.portal.event.EventManager; |
| import org.apache.cocoon.portal.event.Filter; |
| import org.apache.cocoon.portal.event.Subscriber; |
| import org.apache.excalibur.source.Source; |
| import org.apache.excalibur.source.SourceResolver; |
| import org.xml.sax.ContentHandler; |
| import org.xml.sax.SAXException; |
| |
| /** |
| * This is the adapter to use pipelines as coplets |
| * |
| * @author <a href="mailto:cziegeler@s-und-n.de">Carsten Ziegeler</a> |
| * @author <a href="mailto:volker.schmitt@basf-it-services.com">Volker Schmitt</a> |
| * |
| * @version CVS $Id: URICopletAdapter.java,v 1.14 2004/03/05 13:02:10 bdelacretaz Exp $ |
| */ |
| public class URICopletAdapter |
| extends AbstractCopletAdapter |
| implements Disposable, Subscriber, Initializable, Contextualizable { |
| |
| /** The source resolver */ |
| protected SourceResolver resolver; |
| |
| /** The application context */ |
| protected Context context; |
| |
| /* (non-Javadoc) |
| * @see org.apache.avalon.framework.context.Contextualizable#contextualize(org.apache.avalon.framework.context.Context) |
| */ |
| public void contextualize(Context context) throws ContextException { |
| this.context = context; |
| } |
| |
| /* (non-Javadoc) |
| * @see org.apache.avalon.framework.service.Serviceable#service(org.apache.avalon.framework.service.ServiceManager) |
| */ |
| public void service(ServiceManager manager) throws ServiceException { |
| super.service( manager ); |
| this.resolver = (SourceResolver)this.manager.lookup(SourceResolver.ROLE); |
| } |
| |
| public void streamContent(CopletInstanceData coplet, ContentHandler contentHandler) |
| throws SAXException { |
| final String uri = (String)coplet.getCopletData().getAttribute("uri"); |
| if ( uri == null ) { |
| throw new SAXException("No URI for coplet data "+coplet.getCopletData().getId()+" found."); |
| } |
| this.streamContent( coplet, uri, contentHandler); |
| } |
| |
| public void streamContent(final CopletInstanceData coplet, |
| final String uri, |
| final ContentHandler contentHandler) |
| throws SAXException { |
| Source copletSource = null; |
| PortalService portalService = null; |
| try { |
| if (uri.startsWith("cocoon:")) { |
| portalService = (PortalService)this.manager.lookup(PortalService.ROLE); |
| |
| Boolean handlePars = (Boolean)this.getConfiguration( coplet, "handleParameters"); |
| |
| String sourceUri = uri; |
| |
| if ( handlePars != null && handlePars.booleanValue() ) { |
| List list = (List) portalService.getTemporaryAttribute(URICopletAdapter.class.getName()); |
| if ( list != null && list.contains( coplet )) { |
| // add parameters |
| if ( uri.startsWith("cocoon:raw:") ) { |
| sourceUri = "cocoon:" + uri.substring(11); |
| } |
| } else { |
| // remove parameters |
| if (!uri.startsWith("cocoon:raw:") ) { |
| sourceUri = "cocoon:raw:" + uri.substring(7); |
| } |
| } |
| } |
| |
| HashMap par = new HashMap(); |
| par.put(Constants.PORTAL_NAME_KEY, portalService.getPortalName()); |
| par.put(Constants.COPLET_ID_KEY, coplet.getId()); |
| |
| copletSource = this.resolver.resolveURI(sourceUri, null, par); |
| } else { |
| copletSource = this.resolver.resolveURI(uri); |
| } |
| SourceUtil.toSAX(copletSource, contentHandler); |
| } catch (IOException ioe) { |
| throw new SAXException("IOException", ioe); |
| } catch (ProcessingException pe) { |
| throw new SAXException("ProcessingException", pe); |
| } catch (ServiceException ce) { |
| throw new SAXException("ComponentException", ce); |
| } finally { |
| this.resolver.release(copletSource); |
| this.manager.release(portalService); |
| } |
| } |
| |
| /* (non-Javadoc) |
| * @see org.apache.avalon.framework.activity.Disposable#dispose() |
| */ |
| public void dispose() { |
| if ( this.manager != null ) { |
| EventManager eventManager = null; |
| try { |
| eventManager = (EventManager)this.manager.lookup(EventManager.ROLE); |
| eventManager.getRegister().unsubscribe( this ); |
| } catch (Exception ignore) { |
| } finally { |
| this.manager.release( eventManager ); |
| } |
| |
| this.manager.release( this.resolver ); |
| this.resolver = null; |
| this.manager = null; |
| } |
| } |
| |
| /* (non-Javadoc) |
| * @see org.apache.cocoon.portal.event.Subscriber#getEventType() |
| */ |
| public Class getEventType() { |
| return CopletInstanceEvent.class; |
| } |
| |
| /* (non-Javadoc) |
| * @see org.apache.cocoon.portal.event.Subscriber#getFilter() |
| */ |
| public Filter getFilter() { |
| return null; |
| } |
| |
| /* (non-Javadoc) |
| * @see org.apache.cocoon.portal.event.Subscriber#inform(org.apache.cocoon.portal.event.Event) |
| */ |
| public void inform(Event e) { |
| CopletInstanceEvent event = (CopletInstanceEvent)e; |
| PortalService service = null; |
| try { |
| service = (PortalService)this.manager.lookup(PortalService.ROLE); |
| List list = (List)service.getTemporaryAttribute(URICopletAdapter.class.getName()); |
| if ( list == null ) { |
| list = new ArrayList(); |
| } |
| list.add(event.getTarget()); |
| service.setTemporaryAttribute(URICopletAdapter.class.getName(), list); |
| } catch (ServiceException ignore ) { |
| } finally { |
| this.manager.release(service); |
| } |
| } |
| |
| /* (non-Javadoc) |
| * @see org.apache.avalon.framework.activity.Initializable#initialize() |
| */ |
| public void initialize() throws Exception { |
| EventManager eventManager = null; |
| try { |
| eventManager = (EventManager)this.manager.lookup(EventManager.ROLE); |
| eventManager.getRegister().subscribe( this ); |
| } finally { |
| this.manager.release( eventManager ); |
| } |
| } |
| |
| /** |
| * Render the error content for a coplet |
| * @param coplet The coplet instance data |
| * @param handler The content handler |
| * @param error The exception that occured |
| * @return True if the error content has been rendered, otherwise false |
| * @throws SAXException |
| */ |
| protected boolean renderErrorContent(CopletInstanceData coplet, |
| ContentHandler handler, |
| Exception error) |
| throws SAXException { |
| final String uri = (String) this.getConfiguration(coplet, "error-uri"); |
| if ( uri != null ) { |
| // TODO - if an error occured for this coplet, remember this |
| // and use directly the error-uri from now on |
| |
| if ( uri.startsWith("cocoon:") && error != null) { |
| // Create a Notifying |
| NotifyingBuilder notifyingBuilder = null; |
| Notifying currentNotifying = null; |
| try { |
| notifyingBuilder= (NotifyingBuilder)this.manager.lookup(NotifyingBuilder.ROLE); |
| currentNotifying = notifyingBuilder.build(this, error); |
| } catch (Exception ignore) { |
| } finally { |
| this.manager.release(notifyingBuilder); |
| } |
| |
| final Map objectModel = ContextHelper.getObjectModel(this.context); |
| // Add it to the object model |
| if ( currentNotifying != null ) { |
| objectModel.put(org.apache.cocoon.Constants.NOTIFYING_OBJECT, currentNotifying); |
| objectModel.put(ObjectModelHelper.THROWABLE_OBJECT, error); |
| } |
| |
| try { |
| this.streamContent( coplet, uri, handler); |
| } finally { |
| objectModel.remove(org.apache.cocoon.Constants.NOTIFYING_OBJECT); |
| objectModel.remove(ObjectModelHelper.THROWABLE_OBJECT); |
| } |
| } |
| |
| this.streamContent( coplet, uri, handler); |
| |
| return true; |
| } |
| return false; |
| } |
| |
| } |
