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From Michael Dürig (JIRA) <j...@apache.org>
Subject [jira] [Commented] (OAK-89) Improve exception handling
Date Mon, 07 May 2012 20:58:51 GMT

    [ https://issues.apache.org/jira/browse/OAK-89?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13269994#comment-13269994
] 

Michael Dürig commented on OAK-89:
----------------------------------

What do you do when you need to implement {{Iterable}} and the API you need to call in the
implementation of {{iterator()}} forces a checked exception upon you? Return an empty iterator
which is wrong? Throw an unchecked exception for which no one is prepared? There is just no
way here to inform the ultimate consumer of the {{Iterable}} instance of what went wrong.




                
> Improve exception handling
> --------------------------
>
>                 Key: OAK-89
>                 URL: https://issues.apache.org/jira/browse/OAK-89
>             Project: Jackrabbit Oak
>          Issue Type: Improvement
>          Components: core, jcr
>    Affects Versions: 0.2.1
>            Reporter: Michael Dürig
>
> As discusses on the @oak-dev list [1] we need to improve the way exceptions are thrown
and handled. 
> I suggest to create a OakException which extends from RuntimeException and encapsulate
a RepositoryException into it. These exceptions can then be handled where appropriate. We
can the later turn this into a more sophisticated mechanism where the OakException is mapped
to a corresponding RepositoryException by an injected mapping (see Jukka's proposal in the
discussion).
> [1] http://markmail.org/message/t5czrpkvyamn7sym

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