Create a mechanism allowing Jackrabbit to automatically install custom nodes
when it creates a repository
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Key: JCR-324
URL: http://issues.apache.org/jira/browse/JCR-324
Project: Jackrabbit
Type: Improvement
Components: config
Reporter: Mark Slater
Priority: Minor
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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