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Posted to dev@tapestry.apache.org by "Howard M. Lewis Ship (JIRA)" <de...@tapestry.apache.org> on 2007/09/25 02:54:51 UTC
[jira] Assigned: (TAPESTRY-1695) Handling of multiple onActivate
methods could be improved.
[ https://issues.apache.org/jira/browse/TAPESTRY-1695?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Howard M. Lewis Ship reassigned TAPESTRY-1695:
----------------------------------------------
Assignee: Howard M. Lewis Ship
> Handling of multiple onActivate methods could be improved.
> ----------------------------------------------------------
>
> Key: TAPESTRY-1695
> URL: https://issues.apache.org/jira/browse/TAPESTRY-1695
> Project: Tapestry
> Issue Type: Improvement
> Components: tapestry-core
> Affects Versions: 5.0.5
> Reporter: Nick Westgate
> Assignee: Howard M. Lewis Ship
>
> The summary is vague because the docs don't yet cover this situation.
> It seems reasonable to have need for something like:
> Object onActivate() { ... }
> void onActivate(int itemId) { ... }
> The current event handling calls both these activate methods (the 0 parameters method first, then others).
> I see only two ways of dealing with this:
> (1) Factor out common code and use a flag to avoid executing that code twice
> (2) Replace the two activate methods with:
> Object onActivate(Object[] parameters) { ... }
> Both options impose some fiddly responsibilities onto the developer.
> Perhaps a resolution is already planned but here are some ideas:
> - call only one event handler
> - allow event handlers to short-circuit (return boolean/Boolean?)
> - swallow coercion exceptions so other event handlers can be tried
> Cheers,
> Nick.
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