Bug 153684 - libgcj should Provide jaxp_parser_impl
libgcj should Provide jaxp_parser_impl
Status: CLOSED RAWHIDE
Product: Fedora
Classification: Fedora
Component: java-1.4.2-gcj-compat (Show other bugs)
4
i386 Linux
medium Severity low
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Assigned To: Thomas Fitzsimmons
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Depends On:
Blocks:
  Show dependency treegraph
 
Reported: 2005-04-04 19:27 EDT by Robin Green
Modified: 2007-11-30 17:11 EST (History)
3 users (show)

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Last Closed: 2005-04-15 15:19:42 EDT
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Description Robin Green 2005-04-04 19:27:12 EDT
Description of problem:
The libgcj rpm should be listed as Providing jaxp_parser_impl, because it
contains gnujaxp. Otherwise yum will presumably unnecessarily look for an
alternative jaxp implementation.

Version-Release number of selected component (if applicable):
libgcj-4.0.0-0.38

How reproducible:
Every time

Steps to Reproduce:
1. rpm -q --provides libgcj
  
Actual results:
lib-gnu-java-awt-peer-gtk.so.6
libgcj.so.6
libgcj4
libgij.so.6
libjawt.so.6
libgcj = 4.0.0-0.38

Expected results:
The above plus
jaxp_parser_impl


Additional info:
Comment 2 Thomas Fitzsimmons 2005-04-05 11:57:04 EDT
This is tricky because some packages require specific 
Comment 3 Thomas Fitzsimmons 2005-04-05 12:00:07 EDT
jaxp parser implementations.  This generic virtual provides comes from JPackage
and I'm not sure it's a good idea.  I think we should change packages that
require xalan and xerces to explicitly require them.  And we should maybe create
a "sdk_jaxp_parser" virtual provide for packages that want to explicitly require
the built-in parser implementation.
Comment 4 Robin Green 2005-04-05 12:02:48 EDT
I think jaxp_parser_impl is useful for dependencies for packages which don't
care which implementation of jaxp they use.
Comment 5 Thomas Fitzsimmons 2005-04-05 12:41:18 EDT
True.  Another possibility is that I could add this Provides to java-gcj-compat.
 Gary, what are the implications of doing this for packages that need xerces/xalan?
Comment 6 Gary Benson 2005-04-06 10:19:56 EDT
I'm not sure.  Applications that use xerces make sure that xerces is the XML
parser by having xerces-j2.jar in the classpath; there's a bunch of files in
that jar's META-INF/services directory that point to various classes that are
loaded by reflection.  How are libgcj's classes discovered?  libgcj.jar doesn't
contain the META-INF/services stuff, so I'm guessing that libgcj's stuff is
loaded as a default when nothing else is found.  If that's the case then it
shouldn't be a problem.

Also I think java-gcj-compat is a better place for the alternatives stuff than
libgcj.
Comment 7 Thomas Fitzsimmons 2005-04-15 15:19:42 EDT
OK, I've added:

Provides: jaxp_parser_impl

to java-gcj-compat.  This will land in Rawhide tomorrow, closing.

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