/*
* 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.event.aspect.impl;
import java.util.StringTokenizer;
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.Publisher;
import org.apache.cocoon.portal.event.aspect.EventAspect;
import org.apache.cocoon.portal.event.aspect.EventAspectContext;
import org.apache.cocoon.portal.layout.Layout;
/**
*
* @author <a href="mailto:juergen.seitz@basf-it-services.com">Jürgen Seitz</a>
* @author <a href="mailto:cziegeler@s-und-n.de">Carsten Ziegeler</a>
*
* @version CVS $Id: AbstractContentEventAspect.java,v 1.4 2004/03/05 13:02:12 bdelacretaz Exp $
*/
public abstract class AbstractContentEventAspect
extends AbstractLogEnabled
implements EventAspect, ThreadSafe, Serviceable {
protected ServiceManager manager;
/* (non-Javadoc)
* @see org.apache.avalon.framework.service.Serviceable#service(org.apache.avalon.framework.service.ServiceManager)
*/
public void service(ServiceManager manager) throws ServiceException {
this.manager = manager;
}
protected abstract String getRequestParameterName();
protected abstract int getRequiredValueCount();
/**
* Custom publishing of an event.
* The real values for the event are contained in the array
* starting with index 2!
* @param layout The corresponding layout
* @param values The values contained in the request
*/
protected abstract void publish(Publisher publisher, Layout layout, String[] values);
/**
* Publish the event.
* This method gets the layout object from the first two
* values and invokes {@link #publish(Publisher, Layout, String[])}.
* @param values The values contained in the request
*/
protected void publish( PortalService service, Publisher publisher, String[] values) {
Layout layout = service.getComponentManager().getProfileManager().getPortalLayout(values[0], values[1] );
if ( layout != null ) {
this.publish( publisher, layout, values);
}
}
/* (non-Javadoc)
* @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) {
final Request request = ObjectModelHelper.getRequest(context.getObjectModel());
String[] values = request.getParameterValues(this.getRequestParameterName());
if (values != null) {
final Publisher publisher = context.getEventPublisher();
for (int i = 0; i < values.length; i++) {
// first try to make an event out of the value of the parameter
final String value = values[i];
Event e = null;
try {
e = context.getEventConverter().decode(value);
if (null != e) {
publisher.publish(e);
}
} catch (Exception ignore) {
}
// the event could not be generated, so try different approach
if (e == null) {
// Use '|' character as delimiter between Group, ID and URI
StringTokenizer tokenizer = new StringTokenizer(value, "|");
int tokenNumber = 0;
int tokenCount = tokenizer.countTokens();
// if only 2 params are in the String
// the groupKey is missing and defaults to null
if (tokenCount == this.getRequiredValueCount()-1) {
tokenNumber = tokenNumber + 1;
tokenCount++;
}
if ( tokenCount == this.getRequiredValueCount() ) {
String [] eventValues = new String[tokenCount];
while (tokenizer.hasMoreTokens()) {
eventValues[tokenNumber] = tokenizer.nextToken();
tokenNumber = tokenNumber + 1;
}
this.publish( service, publisher, eventValues );
} else {
this.getLogger().warn("Data for Event is not set correctly");
}
}
}
}
// and invoke next one
context.invokeNext(service);
}
}