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From "Mark Slater (JIRA)" <j...@apache.org>
Subject [jira] Commented: (JCR-324) Create a mechanism allowing Jackrabbit to automatically install custom nodes when it creates a repository
Date Tue, 21 Feb 2006 03:47:25 GMT
    [ http://issues.apache.org/jira/browse/JCR-324?page=comments#action_12367128 ] 

Mark Slater commented on JCR-324:
---------------------------------

Forgot to mention, if the above patch is accepted, I'd be happy to update the site documentation
with the new functionality and to update the org.apache.jackrabbit.core.nodetype.compact.CompactNodeTypeDefReader
in contrib (assuming that's still being maintained).

> Create a mechanism allowing Jackrabbit to automatically install custom nodes when it
creates a repository
> ---------------------------------------------------------------------------------------------------------
>
>          Key: JCR-324
>          URL: http://issues.apache.org/jira/browse/JCR-324
>      Project: Jackrabbit
>         Type: Improvement
>   Components: config
>     Reporter: Mark Slater
>     Priority: Minor
>  Attachments: customNodeTypeReaderConfig.patch
>
> The current process for adding new nodes requires clients to open a new session, get
a session, then a workspace, then the Jackrabbit implementation of a NodeTypeManager where
the Jackrabbit NodeTypeDef objects can be added. However, custom node types need only be added
once, preferably when the repository is created/initialized, as this is the most appropriate
time for such actions. The alternatives for clients wishing to install custom node types include:
> - configuring an object to run when their app is deployed or started; this method may
be dependent on the environment and may not be portable
> - checking to see if custom node types exist whenever they go to access the repository;
this degrades performance
> A better alternative would be to allow Jackrabbit to add the custom node types when it
creates a repository. This could be accomplished by either adding an element to the repository
configuration XML file. In one scenario, the element specifies the location of the custom
node file and the class of the node type reader used to process the file. In another scenario,
the element specifies the name of a class and a method to call on that class that will initialize
the repository. In my mind, the first scenario seems like a better solution. While it is no
more portable than a custom initialization object invoked by the environment, it has the benefit
of not being non-portable code.
> I would be happy to code up the first scenario (location of custom node file and a reader
class) if it is an appropriate improvement to the system.

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