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From "Pierre De Rop (JIRA)" <j...@apache.org>
Subject [jira] [Created] (FELIX-3524) SCR configuration-pid from compendium 4.3
Date Sun, 27 May 2012 22:59:22 GMT
Pierre De Rop created FELIX-3524:

             Summary: 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)
            Reporter: Pierre De Rop
            Priority: Minor

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.


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