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From "Ludger Buenger" <ludger.buen...@realobjects.com>
Subject RE: Dropping JDK 1.2 support for Xerces-J (and possibly JDK 1.3? 1.4? in the future)
Date Tue, 11 Nov 2008 14:34:08 GMT
Before Advancing beyond 1.3 I'd suggest to maybe initiate a usage poll
analogous to http://wiki.apache.org/xmlgraphics/UserPollOct2007 to get
an overview which JDK version is still in use and required by Xerces-J
users.

 

That would give the community a foundation to base a good decision upon.

 

 

From: Michael Glavassevich [mailto:mrglavas@ca.ibm.com] 
Sent: Monday, November 10, 2008 4:52 AM
To: j-dev@xerces.apache.org; j-users@xerces.apache.org
Cc: general@xml.apache.org
Subject: Dropping JDK 1.2 support for Xerces-J (and possibly JDK 1.3?
1.4? in the future)

 

Hi all,

(including general@xml.apache.org on the cc list to hopefully reach a
wider audience)

I would like to propose that we officially drop support for JDK 1.2 in
the next release of Xerces-J. Though the documentation [1] states that
Xerces supports JDK 1.2 it has been years since we have built or tested
binaries with this level. All of the recent releases were built and
tested with JDK 1.3. It was brought to my attention that the code [2]
since at least 2006 has had a dependency on APIs introduced in JDK 1.3.
So we inadvertently moved on awhile ago. It seems this has not been a
practical issue for most users since we've received no posts on these
lists about it and received no other bug reports. It's not clear that
there would be much benefit in restoring JDK 1.2 compatibility at this
point. It's been out of service for years and looking around Apache it
seems most projects run on JDK 1.4 or higher with some of the stragglers
[3][4] below that moving up soon.

If you have serious concerns regarding Xerces abandoning JDK 1.2 support
please send an email to the j-dev@xerces.apache.org mailing list,
specifying why you can't use a higher level of JDK and what parser
features you are using.

While on the subject I wonder what the community would think of us
eventually dropping support for JDK 1.3 and possibly 1.4. There were
features introduced in JDK 1.4 and 5 which Xerces could benefit from
(e.g. NIO, java.lang.CharSequence, exception chaining,
java.lang.StringBuilder, java.util.concurrent.*, etc...). That's not
something I'm proposing today (or thinking of proposing for awhile) but
would like to hear feedback from users (please send to
j-dev@xerces.apache.org) who may still need new versions of Xerces which
run on JDK 1.3 and 1.4. It would also be nice hear from folks who've
long since moved on to Java 5 and beyond and would like to see Xerces
take advantage of JDK 1.4 and 5 features.

Thanks.

[1] http://xerces.apache.org/xerces2-j/faq-general.html#faq-11
<http://xerces.apache.org/xerces2-j/faq-general.html#faq-11> 
[2] http://issues.apache.org/jira/browse/XERCESJ-1297
<http://issues.apache.org/jira/browse/XERCESJ-1297> 
[3] http://marc.info/?l=ant-dev&m=122596549809889&w=2
<http://marc.info/?l=ant-dev&m=122596549809889&w=2> 
[4] http://marc.info/?l=fop-user&m=119244442600564&w=2
<http://marc.info/?l=fop-user&m=119244442600564&w=2> 

Michael Glavassevich
XML Parser Development
IBM Toronto Lab
E-mail: mrglavas@ca.ibm.com
E-mail: mrglavas@apache.org


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