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From "angela (JIRA)" <j...@apache.org>
Subject [jira] Commented: (JCR-473) Some enhancements to jackrabbit commons
Date Tue, 11 Jul 2006 13:37:30 GMT
    [ http://issues.apache.org/jira/browse/JCR-473?page=comments#action_12420309 ] 

angela commented on JCR-473:
----------------------------

oh. i can help you if you want me to.

apart from the deprecated calls, it would be nice to have all the hardcoded index (0, 1),
the depth and the name of the root-node replaced by the corresponding constants.

i didn't do that in order to keep the patch as small as possible. 

regarding deprecation:
maybe QName.toJCRName (and fromJCRName) can be replaced by the corresponding namespace resolver
calls. this might be better than the NameFormat calls, since the resolvers may have caches.
similar for paths.

> Some enhancements to jackrabbit commons
> ---------------------------------------
>
>          Key: JCR-473
>          URL: http://issues.apache.org/jira/browse/JCR-473
>      Project: Jackrabbit
>         Type: Improvement

>     Versions: 1.0
>     Reporter: angela
>     Assignee: Tobias Bocanegra
>  Attachments: JCR-473_rev_417443.patch, JCR-473_rev_417443_2.patch
>
> I would like to suggest a couple of  enhancements to the commons module. 
> The patch was created against rev. 417443 and the tests did not reveal any 
> problems.
> Summary of suggestion modifications:
> QName
> -------------------------------------------------------------------------------------------------------------------------
> - reduce QName to its core functionality and put conversion from and to JCR name to
>   a separate class 'NameFormat'
> - in order not to break existing code, all methods that deal with the conversion in QName
>   are marked deprecated.
> - add constant for the name of the root node.
> Path
> -------------------------------------------------------------------------------------------------------------------------
> - reduce Path to its core functionality and put conversion from and to JCR path to
>   a separate class 'PathFormat'
> - in order not to break existing code, all methods that deal with the conversion in Path
>   are marked deprecated.
> - introduce new constants for UNDEFINED_INDEX (0) and DEFAULT_INDEX (1), that
>    are currently hardcoded throughout  the jackrabbit project.
> - new method Path.getElement(int) [PathElement]
> - make PathElement constants public (used by PathFormat)
> Path.PathBuilder
> -------------------------------------------------------------------------------------------------------------------------
> - additional constructor  PathBuilder(Path)
> Path.PathElement
> -------------------------------------------------------------------------------------------------------------------------
> - add PathElement.getNormalizedIndex() that always asserts a 1-based index.
> - change subclasses to be private (no usage within the jackrabbit, except inside Path).
> PathMap
> -------------------------------------------------------------------------------------------------------------------------
> - move o.a.j.core.PathMap  to o.a.j.util.PathMap in order to make it available in the
>   commons module.
> NamespaceResolver
> -------------------------------------------------------------------------------------------------------------------------
> - add methods for resolution of paths:
>    > getQPath(String jcrPath) [Path]
>    > getJCRPath(Path qPath) [String]
> NamespaceListener
> -------------------------------------------------------------------------------------------------------------------------
> - add method 'namespaceRemove(String)'
> ValueHelper
> -------------------------------------------------------------------------------------------------------------------------
> currently  JCR value objects are 'manually' created in the ValueHelper despite the
> fact, that JSR170 defines a ValueFactory interface. Consequently the ValueHelper
> present in the commons module can only be used by implementations that use
> the same value implementations.
> - add new helper methods that take a ValueFactory as argument.
> - in order not to break existing code the original methods are marked deprecated and
>   may be removed at a later time.
> consequently:
> - modify signature of  InternalValue.create that include a value conversion to take a
>   ValueFactory param and adjust all usages inside the core package.
> ValueFactoryImpl
> -------------------------------------------------------------------------------------------------------------------------
> - createValue(String, int ): used to call the conversion on ValueHelper. with the 
>    changes suggested to ValueHelper, the code must be changed in order to
>    created instances of the Value implementations within the factory.
> - together with the modification to ValueHelper, stefan suggested to replace the public

>   constructor with a static 'getInstance' method. All usages within jackrabbit.core,
were
>    modified accordingly.
> Text
> -------------------------------------------------------------------------------------------------------------------------
> - add getName(String, boolean) where the boolean flag indicates whether  a trailing slash

>    should be ignored.
> - add getRelativeParent(String, int, boolean) where the boolean flag indicates whether
 a 
>   trailing slash should be ignored.

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