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From "Felix Meschberger (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (FELIX-3524) SCR configuration-pid from compendium 4.3
Date Wed, 06 Jun 2012 10:50:22 GMT

    [ https://issues.apache.org/jira/browse/FELIX-3524?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13290074#comment-13290074
] 

Felix Meschberger commented on FELIX-3524:
------------------------------------------

Excellent. Thanks.
                
> SCR configuration-pid from compendium 4.3
> -----------------------------------------
>
>                 Key: FELIX-3524
>                 URL: https://issues.apache.org/jira/browse/FELIX-3524
>             Project: Felix
>          Issue Type: New Feature
>          Components: Declarative Services (SCR), Specification compliance
>    Affects Versions:  scr-1.6.0
>            Reporter: Pierre De Rop
>            Assignee: Felix Meschberger
>            Priority: Minor
>             Fix For: scr-1.8.0
>
>         Attachments: FELIX-3524.patch, FELIX-3524.patch
>
>
> This issue is about implementing the new "configuration-pid" component attribute specified
by the OSGi 4.3 compendium. So far, components were using the component name in order to retrieve
the component configuration from config admin. But In the section 112.4.4,  a component can
now define an optional specific configuration-pid, in order to use a PID which is different
from the component name.
> I have attached to this issue a proposed candidate patch, if someone could review it
and hopefully commit it.
> I have not yet made a unit test, but if my propose patch seems reasonable and is accepted,
then I will try to learn to implement the corresponding test.
> Here is a brief description of the patch:
> - first the parser (XmlHandler/ComponentMetaData) has been modified in order to parse
the new configiration-pid attribute from the component element (the parsing fails if the version
is not greater or equals to DS 1.2).
> - next, in ComponentRegistry.java, we are now holding the mapping between configuration
pids and their respective components: a new method getComponentHoldersByPid(String pid) method
has been added, and returns the iterator on the ComponentHolders which must be configured
with the given pid. Please see comments in patch.
> - in ConfigurationSupport.java:  when a configuration update is detected from config
admin, then the updated is notified to all components whose configuration-pid are referencing
the updated pid.
> thanks.

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