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From "Jukka Zitting (JIRA)" <j...@apache.org>
Subject [jira] Closed: (JCR-65) ChainedPersistenceManager
Date Tue, 26 Jul 2005 22:21:49 GMT
     [ http://issues.apache.org/jira/browse/JCR-65?page=all ]
     
Jukka Zitting closed JCR-65:
----------------------------


> ChainedPersistenceManager
> -------------------------
>
>          Key: JCR-65
>          URL: http://issues.apache.org/jira/browse/JCR-65
>      Project: Jackrabbit
>         Type: New Feature
>     Reporter: Edgar Poce
>     Assignee: Jukka Zitting
>     Priority: Minor
>  Attachments: 05-03-15-chained-persistence.zip, uml-class.gif
>
> Overview
> The package contains the classes that provide chaining of Persistence Managers support
through an implementation of the chain of responsibility pattern.
> The ChainedPersistenceManager class is the chain's external controller.
> The current implementation uses composition instead of inheritance. The concrete handlers
(PersistenceManager) are private members instead of subclasses.
> For reading commands no evaluation is performed, the ChainedPersistenceManager returns
the response of the first handler that finds the object.
> From jackrabbit-dev-return-3017-apmail-incubator-jackrabbit-dev-archive=www.apache.org@incubator.apache.org
Tue Jul 26 22:22:39 2005
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Delivered-To: mailing list jackrabbit-dev@inFor writing commands, the PersistenceManagerHandler
class delegates conditionally the persistence calls to the concrete implementation based on
a custom evaluation.
> Custom PersistenceManagerEvaluator implementations can be set through configuration.
> Custom listeners can be added to the ChainedPersistenceManager class. It allows to perform
custom operations on "after init" and "before close" events. 
> Warning
> This package should be used only in a couple of cases and none of them is the best practice.
>     * Sharing jcr data with others systems through a custom PersistenceManager
>     * Integrating a legacy system
> Reliability, integrity and performance of the PersistenceManager are *crucial* to the
overall stability & performance of the repository. if e.g. the data that a PersistenceManager
is based upon is allowed to change through external means the integrity of the repository
would be at risk (think of referential integrity/ node references e.g.).

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Date: Wed, 27 Jul 2005 00:21:39 +0200 (CEST)
From: "Jukka Zitting (JIRA)" <jira@apache.org>
To: jackrabbit-dev@incubator.apache.org
Subject: [jira] Closed: (JCR-132) BindableRepositoryFactory requires exact resource type
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     [ http://issues.apache.org/jira/browse/JCR-132?page=all ]
     
Jukka Zitting closed JCR-132:
-----------------------------


> BindableRepositoryFactory requires exact resource type
> ------------------------------------------------------
>
>          Key: JCR-132
>          URL: http://issues.apache.org/jira/browse/JCR-132
>      Project: Jackrabbit
>         Type: Wish
>   Components: config
>  Environment: JNDI
>     Reporter: Jukka Zitting
>     Assignee: Jukka Zitting
>     Priority: Trivial
>  Attachments: BindableRepositoryFactory.patch
>
> The org.apache.jackrabbit.jndi.BindableRepositoryFactory class requires the exact class
name org.apache.jackrabbit.jndi.BindableRepository to be specified for the JNDI resource that
the factory is responsible for. However the current deployment model 2 howto document suggest
that the more generic interface name javax.jcr.Repository be used instead. Currently this
suggested configuration results in a null JNDI resource .
> This issue should be fixed by either fixing the documentation (I can do this) or by relaxing
the code in BindableRepositoryFactory. I'll attach a patch that does the latter, please comment
on what you think is the best solution.
> This issue was detected during the mailing list thread
> http://thread.gmane.org/gmane.comp.apache.jackrabbit.devel/2303

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