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From "Leo Neumeyer (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (S4-12) Dynamic Method Dispatching
Date Thu, 20 Oct 2011 17:22:16 GMT

    [ https://issues.apache.org/jira/browse/S4-12?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13131790#comment-13131790
] 

Leo Neumeyer commented on S4-12:
--------------------------------

Answer to your question: If PE has several incoming event types, how do you bind a specific
type to onTrigger(). Also, this seems symmetric with onEvent(), developer only needs to learn
one pattern for both cases. 
                
> Dynamic Method Dispatching
> --------------------------
>
>                 Key: S4-12
>                 URL: https://issues.apache.org/jira/browse/S4-12
>             Project: Apache S4
>          Issue Type: Bug
>         Environment: Matthieu, in ProcessingElement, I think you need to make the trigger
map key dynamic, no? The trigger object is stored using the Event class as key which means
that for CounterEvent, the key should be CounterEvent.class.
> private boolean isTrigger(Event event) {
>         /* Check if there is a trigger for this event type. */
>         Trigger trigger = triggers.get(Event.class); // TODO: modify for dynamic
>                                                      // dispatch.
>         if (trigger == null)
>             return false;
>         /*
>          * Check if it is time to activate the trigger for this event type.
>          */
>         return trigger.checkAndUpdate();
>     }
>            Reporter: Leo Neumeyer
>            Assignee: Matthieu Morel
>             Fix For: 0.5
>
>


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