Examples of org.apache.cocoon.portal.event.Receiver

org.apache.cocoon.portal.event.Receiver
A receiver registers its interest in a class of events through the {@link org.apache.cocoon.portal.event.EventManager}. An event is an object of the interface {@link org.apache.cocoon.portal.event.Event}or a subclass/interface of it. Usually a receiver is not interested in every event but only for some specific event types. These types are represented by an own subclass/interface. When a receiver subscribes itself at the event manager, the manager checks (using reflection) for occurances of the method "inform" on the receiver. The signature of the method consists of two parameters, where the first one is the event subclass and the second one the PortalService. If for example a receiver is interested in all {@link org.apache.cocoon.portal.event.CopletInstanceEvent}s then it subscribes using the event manager and should provide an inform method with the following signature: public void inform(CopletInstanceEvent event, PortalService). If a receiver is interested in more than one event type, then it can implement several inform methods each with the corresponding event class as the first parameter. However, it is important to notice that the current implementation of the event manager has some restrictions! A receiver should not implement to inform methods where one event is a subclass or subinterface of the other event. In that case only one method is called and it's not deterministic which one will be called (this may vary for example on the used operating system the code runs on!). This problem will be solved in 2.2. @author Carsten Ziegeler @version CVS $Id: Receiver.java 386098 2006-03-15 15:49:44Z cziegeler $

            Configuration[] rolesConf = roles.getChildren("role");
            for(int i=0; i<rolesConf.length;i++) {
                final Configuration current = rolesConf[i];
                final String name = current.getAttribute("name");


                Receiver receiver = null;
                try {
                    receiver = (Receiver) this.manager.lookup(name);
                    this.subscribe(receiver);
                } finally {
                    this.manager.release(receiver);
                }
            }
        }
        // subscribe all configured receiver classes
        classes = this.configuration.getChild("receiver-classes", false);
        if ( classes != null ) {
            Configuration[] classesConf = classes.getChildren("class");
            for(int i=0; i<classesConf.length;i++) {
                final Configuration current = classesConf[i];
                final String name = current.getAttribute("name");


                Receiver receiver = (Receiver)ClassUtils.newInstance(name);
                ContainerUtil.enableLogging(receiver, this.getLogger());
                ContainerUtil.contextualize(receiver, this.context);
                ContainerUtil.service(receiver, this.manager );
                ContainerUtil.initialize(receiver);
                this.subscribe(receiver);

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                subscriber.inform(event);
            }
        }
        for (Iterator re = this.receivers.entrySet().iterator(); re.hasNext(); ) {
            final Map.Entry current = (Map.Entry)re.next();
            final Receiver receiver = (Receiver)current.getKey();
            final List methodInfos = (List)current.getValue();
            boolean found = false;
            final Iterator ci = methodInfos.iterator();
            while ( !found && ci.hasNext() ) {
                final MethodInfo info = (MethodInfo)ci.next();

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            Configuration[] rolesConf = roles.getChildren("role");
            for(int i=0; i<rolesConf.length;i++) {
                final Configuration current = rolesConf[i];
                final String name = current.getAttribute("name");
                
                Receiver receiver = null;
                try {
                    receiver = (Receiver) this.manager.lookup(name);
                    this.subscribe(receiver);
                } finally {
                    this.manager.release(receiver);
                }
            }
        }
        // subscribe all configured receiver classes
        classes = this.configuration.getChild("receiver-classes", false);
        if ( classes != null ) {
            Configuration[] classesConf = classes.getChildren("class");
            for(int i=0; i<classesConf.length;i++) {
                final Configuration current = classesConf[i];
                final String name = current.getAttribute("name");
                
                Receiver receiver = (Receiver)ClassUtils.newInstance(name);
                ContainerUtil.enableLogging(receiver, this.getLogger());
                ContainerUtil.contextualize(receiver, this.context);
                ContainerUtil.service(receiver, this.manager );
                ContainerUtil.initialize(receiver);
                this.subscribe(receiver);

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                subscriber.inform(event);
            }
        }
        for (Iterator re = receivers.entrySet().iterator(); re.hasNext(); ) {
            final Map.Entry current = (Map.Entry)re.next();
            final Receiver receiver = (Receiver)current.getKey();
            final List methodInfos = (List)current.getValue();
            boolean found = false;
            final Iterator ci = methodInfos.iterator();
            while ( !found && ci.hasNext() ) {
                final MethodInfo info = (MethodInfo)ci.next();

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            Configuration[] rolesConf = roles.getChildren("role");
            for(int i=0; i<rolesConf.length;i++) {
                final Configuration current = rolesConf[i];
                final String name = current.getAttribute("name");
                
                Receiver receiver = null;
                try {
                    receiver = (Receiver) this.manager.lookup(name);
                    this.subscribe(receiver);
                } finally {
                    this.manager.release(receiver);
                }
            }
        }
        // subscribe all configured receiver classes
        classes = this.configuration.getChild("receiver-classes", false);
        if ( classes != null ) {
            Configuration[] classesConf = classes.getChildren("class");
            for(int i=0; i<classesConf.length;i++) {
                final Configuration current = classesConf[i];
                final String name = current.getAttribute("name");
                
                Receiver receiver = (Receiver)ClassUtils.newInstance(name);
                ContainerUtil.enableLogging(receiver, this.getLogger());
                ContainerUtil.contextualize(receiver, this.context);
                ContainerUtil.service(receiver, this.manager );
                ContainerUtil.initialize(receiver);
                this.subscribe(receiver);

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                subscriber.inform(event);
            }
        }
        for (Iterator re = receivers.entrySet().iterator(); re.hasNext(); ) {
            final Map.Entry current = (Map.Entry)re.next();
            final Receiver receiver = (Receiver)current.getKey();
            final List methodInfos = (List)current.getValue();
            boolean found = false;
            final Iterator ci = methodInfos.iterator();
            while ( !found && ci.hasNext() ) {
                final MethodInfo info = (MethodInfo)ci.next();

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Related Classes of org.apache.cocoon.portal.event.Receiver

org.apache.cocoon.portal.event.impl.DefaultEventManager

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