java-devel February 2007

java-devel@lists.fedoraproject.org

18 participants
11 discussions

Another weird jpackage/Fedora thing
by Mary Ellen Foster 23 Feb '07

23 Feb '07

With the most recent update to Eclipse, I again had the following sequence. Before this whole process, I had tomcat5-5.5.20-5jpp from JPackage installed. (NB: I don't actually *use* tomcat, but other stuff pulls it in) I attempted "yum update". The dependency-checking output included: --> Processing Dependency: tomcat5 >= 5.5.17 for package: eclipse-platform --> Restarting Dependency Resolution with new changes. --> Populating transaction set with selected packages. Please wait. ---> Downloading header for tomcat5 to pack into transaction set. tomcat5-5.5.17-6jpp.2.i38 100% |=========================| 24 kB 00:00 ---> Package tomcat5.i386 0:5.5.17-6jpp.2 set to be updated And the proposed set of resolved dependencies included: Installing for dependencies: tomcat5 i386 5.5.17-6jpp.2 core 318 k After I hit "Y" and all of the packages downloaded, I got: Transaction Check Error: package tomcat5-5.5.20-5jpp (which is newer than tomcat5-5.5.17-6jpp.2) is already installed Well, yes, that's true. But it shouldn't even have tried to install the older one, should it? The dependency is on ">= 5.5.17" ... Anyway, to solve this, I did "rpm -e --nodeps tomcat5" and then the yum update, which correctly downloaded installed tomcat5-5.5.17-6jpp.2 from Core as part of its dependency solving. Then, when I did a second "yum update", it happily updated me to tomcat5-5.5.20-5jpp from jpackage again. So Eclipse and JPackage tomcat seem to be able to coexist happily (at least at the dependency level) as long as tomcat is updated after Eclipse. But somehow every time I try to do an update, yum wants to install the older tomcat again even though it's already got a newer one it appears to be happy with. Is this something to do with the fact that the core package is i386 and the JPP one is noarch? Or something else? It seems to be a yum-level problem, probably, but I just wanted to see if anyone else had insights. Thanks! MEF -- Mary Ellen Foster http://homepages.inf.ed.ac.uk/mef/

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gnuxml -> xerces/xalan?
by Andrew Overholt 23 Feb '07

23 Feb '07

Hi, From my perspective, a large percentage of our libgcj issues are xml-related. Is there any way we could put xerces and/or xalan (or whatever) in the endorsed dir and make those our default for F7? Andrew

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eclipse-cdt-3.1.2 with Autotools 0.0.8 support available
by Jeff Johnston 22 Feb '07

22 Feb '07

This is to announce that version 3.1.2 of the Eclipse CDT is now available for Fedora. The RPMs also contain the latest Autotools plugin release, 0.0.8. The Autotools 0.0.8 plug-in has been updated from 0.0.7 to contain an improved Autoconf editor including outline support and rudimentary syntax parsing. As this project is under heavy development, we would greatly appreciate any testing and feedback. For FC6, the RPMs can be installed from the updates-testing repo. For F7, the RPMs can be installed from Rawhide. Any bugs should be submitted to bugzilla.redhat.com for Fedora Core under component eclipse-cdt.

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java specfile reviewfest
by Andrew Overholt 21 Feb '07

21 Feb '07

Hi, Some of us have decided to get together on Monday 12 February to grind through reviews for both the new packages required for maven2 and those for the existing core packages. It'd be great if people could help out with this. We hang out on #fedora-java on Freenode and will make a point of being there on Monday all day. Those of us meeting in the flesh are in EST but I hope that doesn't stop others in different timezones from participating. Deepak: can you send out some URLs to the review requests. Potentially also that list we came up with for order of review? Thanks, Andrew

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Java APIs for image thumbnail generation
by Joe Desbonnet 19 Feb '07

19 Feb '07

Probably a little OT as it's not a Fedora specific question, but this spills into the JNI area so I though I'd bounce this question of Fedora Java developers. Some of my Java server side apps feature image databases and there is a need to generate thumbnails for the images. Up to now I've been using the JAI (Java Advanced Imaging) API, but I was never happy with the results. The ImageMagick "convert" utility always produced much better results. After Googleing this topic I've come to the conclusion that despite all the image manipulation APIs in the Java standard, there is no way to produce a thumbnail of the same quality as a "convert -geometry 100x100" command. (Am I right in saying this?). So I've given up on a pure Java solution and I'm currently forking a process running convert for thumbnail generation. Apart from generating superior quality thumbnails, it also seems to be a more memory-friendly solution. I've also looked at the JMagick JNI wrapper for ImageMagic, but the simple fork technique has worked well so far so I'm not sure if there is any huge advantage to using the JNI path to ImageMagick. My question is: does anyone have a better solution for thumbnail generation? A platform neutral solution would be best, but I'm willing to assume a Linux server failing that. The Java VM must be in headless mode however as it's running on a server. Thanks, Joe.

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F7 plan (gcj/java/eclipse/swt/java-gnome/fop/batik/etc)
by Mark Wielaard 12 Feb '07

12 Feb '07

Hi, I saw the following thread about F7 plans and noticed we don't have any goals for gcj/eclipse/swt/java-gnome/etc http://thread.gmane.org/gmane.linux.redhat.fedora.advisory-board/1551 So here are some ideas, deadlines and dependencies that might be nice to look at for F7 for the various stacks that make up the fedora-devel-java world. Please reply if you are working on any of this, if I am saying something silly/wrong or if there are more stack/application issues that you think are important for F7. The "important dates" are: - January 23 - Test1 Development Freeze - February 20 - Test2 Development Freeze - March 15 - Test3 Development Freeze - Release in April Test2 is just before Fosdem. And since all features should be in by then, it would be nice to try and create a liveCD with all "our features" on it to show off at Fosdem (Feb 24/25, Brussel, Belgium). - 1.5 language & library support in gcj This seems to be the biggest and most intrusive upgrade. But starting this early seems like a very good idea. Upstream is cleaning up some last issues. And it needs lots of testing. Would be good if something can be cooked up for Test1. Needs help from gcc-toolchain people. - Separate libgcj-rpm. Would be really nice so we can update the core class libraries separate from the core gcc compilers. Should also help with updates/dependencies since libgcj provides the mozilla plugin now and the awt libraries depend on gtk+. Would be nice if this can be done before Test2 so we can test an upgrade. Again needs help from gcc-toolchain people. - java-gcj-compat The biggest issue with this, if the 1.5-stack goes through is that gjdoc isn't 1.5 safe. If we cannot easily update gjdoc, then maybe sinjdoc could be investigated as replacement. http://www.cag.lcs.mit.edu/~cananian/Projects/GJ/#sinjdoc (Do we also need updates for javap and javah replacements?) - eclipse/swt/rcp stack 3.2 seems already good to go, and 3.3 will not come out till the middle of 2007. Azureus, RSSOwl also already seem updated. Andrew Overholt already has written down some plans for the future: http://overholt.ca/wp/?p=76 Maybe some work can be done to support the JDWP work in libgcj to get a little debugging going? And it would be nice to make sure that the ecj from eclipse and that from the gcj 1.5-stack match up. - java-gnome There are some rumors about a upgrade/rewrite, but nothing concrete as far as I have seen. If there is a rewrite that might cause some extra work for applications like Frysk. - gcj-compiled DocBook toolchain It seems we have made lots of progress with FOP and Batik since the last discussion about this: http://thread.gmane.org/gmane.linux.redhat.fedora.documentation/4582 Does anybody know where we are with that at this time? Would be nice to coordinate with the fedora-docs-list if we can provide something. - jpackage. Does it make sense to upgrade all packages to jpp 1.7 if the 1.5-stack goes in? - OpenOffice 2.2 Listed here since it does have some parts written in java. 2.2 comes out end of February. Probably needs retesting with the gcj-stack. I don't know if there are new java language/library dependencies. Some things that would be nice, but that are probably a lot of work, maybe better left for Fedora *, unless someone volunteers of course! :) - OpenJDK Still lots missing. Hopefully at Fosdem we will learn a bit more about the encumberments and when which parts of the core libraries will be liberated fully. But it might be nice to see if javac could be packaged. Or maybe a brave soul make hotspot work with classpath? - PhoneME/CACAO/MIDPath/J2MEPolish The Micro Edition world seems to really have gotten a boost from the GPL release of PhoneME. A lot of this is pretty early access. But it would be nice to have parts of this supported to show that Fedora is also a nice platform to developer for java-based mobile devices. - JBoss application server, SEAM stack Not tried yet. Parts like tomcat are already packaged. If we can get the 1.5-stack going it makes sense to look at this a bit closer. Maybe other parts can be lifted from jpackage? - Netbeans I tried this recently, but it seems still very tight to the Sun java implementation and I was unable to fully start it up on the free stack. But some dependencies like JavaHelp have been liberated (gpl+exception) now (and entered jpackage recently). Also it isn't clear whether the current license (CDDL) is acceptable (it seems unacceptable to Debian). - JOGL and WW2D should work, but I haven't done any testing recently. - japitools should really be packaged and somehow be tied in with the build system so developers/packagers can get an easy overview of whether or not a library upgrade is binary compatible or not. I am sure there is a lot missing. And as you saw none of the items above have real deadlines or people responsible, etc. So please feel free to reply with corrections add those yourself :) Cheers, Mark

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Why does eclipse now require lucene-devel?
by Mary Ellen Foster 12 Feb '07

12 Feb '07

Just curious why the latest eclipse-platform in FC6 update-testing requires lucene-devel in addition to lucene? When I tried to update this morning, I got hit by the fact that lucene is 1.9.1 in jpackage and 1.4.3 in Fedora, and jpackage doesn't have a separate -devel subpackage; had to force-downgrade and exclude lucene from jpackage to make this work. I've bugzilla'd the out-of-date lucene in Fedora: https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=228141 I know next to nothing about lucene except that it's a dependency of Eclipse, but I'm just curious what the changes were. No biggie. MEF -- Mary Ellen Foster http://homepages.inf.ed.ac.uk/mef/

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Re: [fedora-java] Why does eclipse now require lucene-devel?
by Andrew Overholt 10 Feb '07

10 Feb '07

* Ismael Juma <ismael(a)juma.me.uk> [2007-02-10 08:22]: > Hi, > > On Sat, 2007-02-10 at 08:07 -0500, Andrew Overholt wrote: > [...] > > We'll have to make sure the new version works with Eclipse. ISTR it not > > compiling against it but I guess we should investigate. Upstream is > > reluctant to move their dependencies forward like this. > > According to this bug[1], eclipse 3.3 will depend on lucene 1.9.1. They > can't use lucene 2.0 (or the soon to be released 2.1) because they rely > on deprecated APIs that were removed from 2.x. Cool, thanks for letting us know. Perhaps we should look at helping them move forward. Otherwise, we'll have to have 1.9.1 in F8. Andrew

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Re: [fedora-java] gnuxml -> xerces/xalan?
by Andrew Overholt 07 Feb '07

07 Feb '07

* Chris Burdess <dog(a)bluezoo.org> [2007-02-07 08:18]: > Andrew Overholt wrote: > > I just tracked one down to a test case. I can't assign it to you but > > it's here: > > > > http://gcc.gnu.org/bugzilla/show_bug.cgi?id=30718 > > Thanks for spotting this, a fix is in HEAD. You rock, Chris! I'll try it out and move on to other bugs as I find them. Andrew

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Re: [fedora-java] gnuxml -> xerces/xalan?
by Andrew Overholt 06 Feb '07

06 Feb '07

* Chris Burdess <dog(a)bluezoo.org> [2007-02-06 09:34]: > > If there are any issues that are not listed under > > http://gcc.gnu.org/bugzilla/buglist.cgi? > query_format=specific&order=relevance > +desc&bug_status=__open__&product=&content=xml > > please let me know, ideally by opening a new ticket and assigning it > to me. I just tracked one down to a test case. I can't assign it to you but it's here: http://gcc.gnu.org/bugzilla/show_bug.cgi?id=30718 Thanks, Andrew

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java-devel February 2007