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From "Alex Karasulu (JIRA)" <j...@apache.org>
Subject [jira] Commented: (DIRSERVER-834) Schema partition bootstrap code should be more flexible and reliable
Date Sat, 17 Mar 2007 06:00:10 GMT

    [ https://issues.apache.org/jira/browse/DIRSERVER-834?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12481826
] 

Alex Karasulu commented on DIRSERVER-834:
-----------------------------------------

So looking at the commit it seems you separated out the extraction code into the 
new partition-extractor module and use the proper class loader code to locate a
single partition jar to extract?

> Schema partition bootstrap code should be more flexible and reliable
> --------------------------------------------------------------------
>
>                 Key: DIRSERVER-834
>                 URL: https://issues.apache.org/jira/browse/DIRSERVER-834
>             Project: Directory ApacheDS
>          Issue Type: Improvement
>    Affects Versions: 1.5.0
>            Reporter: David Jencks
>         Assigned To: David Jencks
>             Fix For: 1.5.0
>
>         Attachments: DIRSERVER-834-2.patch, DIRSERVER-834.patch
>
>
> Currently the extraction code is packed together with the output of the apacheds-bootstrap-plugin
into the same jar.  However, the extraction code blythely assumes that there's only one set
of files to be loaded available on the classpath.  This makes it needlessly difficult to change
the bootstrap schemas (you have to include the extraction code yourself) and dangerous (there's
no check that only one set of files exist).
> I'd like to
> - put the extraction classes in a separate jar
> - change them to check that there is only one set of files to try to load.
> After this it should be easy to set up a jar with the bootstrap schemas you need for
a particular apacheds application by using the apacheds-bootstrap-plugin and then include
that jar in the server cp for that application and get the schemas you need with no setup
code.
> Apparently there's been some misconception that getClass().getResource() will only load
from the jar the class is in.  Looking at the code involved, Class.getResource delegates to
the class's classloader, which proceeds (in general) to start by searching the parent classpath.
If not found it calls findResource. The javadoc for URLClassLoader.findResource says:
>      * Finds the resource with the specified name on the URL search path.
> so there is no restriction to the jar the class came from.
> So, I think that even if we keep the extraction classes in the same jar as the files
to extract we should make sure there's only one set in the classpath to unpack.

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