[jira] [Updated] (TAP5-955) Add @Optional annotation to mark contribution methods that can be ignored if the indicated service does not exist

["Howard M. Lewis Ship (Updated) (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/TAP5-955?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Howard M. Lewis Ship updated TAP5-955:
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    Summary: Add @Optional annotation to mark contribution methods that can be ignored if the indicated service does not exist  (was: Optional service contributions)
    
> Add @Optional annotation to mark contribution methods that can be ignored if the indicated service does not exist
> -----------------------------------------------------------------------------------------------------------------
>
>                 Key: TAP5-955
>                 URL: https://issues.apache.org/jira/browse/TAP5-955
>             Project: Tapestry 5
>          Issue Type: Improvement
>          Components: tapestry-ioc
>            Reporter: Peter Rietzler
>            Assignee: Howard M. Lewis Ship
>
> Currently the registry wil not start if a module makes contributions to a service which does not exist (e.g. because the module with the service is not loaded). This makes problems with applications, that allow installations with a subset of all modules started. A module should be able to contribute to an extension point only if it is available. In case the service does not exist, the contribution should be ignored. 

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