Good point - and that likely means the current warning is not working - what can we do to improve it?
Perhaps a new text file called jflexregen or something, and it specifically says you must use java 1.5? Uwe Schindler wrote: > > I think the regenerated code in Standard is since years no longer > generated with 1.4 J Most developers use 1.5 or even 1.6. So it > already changed incompatible… > > > > ----- > Uwe Schindler > H.-H.-Meier-Allee 63, D-28213 Bremen > http://www.thetaphi.de > eMail: u...@thetaphi.de > > ------------------------------------------------------------------------ > > *From:* Robert Muir [mailto:rcm...@gmail.com] > *Sent:* Monday, November 16, 2009 8:52 PM > *To:* java-dev@lucene.apache.org > *Subject:* Re: Why release 3.0? > > > > Uwe, thats probably a good solution I think. just as long as we > document somewhere, > I think there is some warning verbage in StandardTokenizer already > about this. > > NOTE: if you change StandardTokenizerImpl.jflex and need to regenerate > the tokenizer, remember to use JRE 1.4 to run jflex (before > Lucene 3.0). This grammar now uses constructs (eg :digit:, > :letter:) whose meaning can vary according to the JRE used to > run jflex. See > https://issues.apache.org/jira/browse/LUCENE-1126 for details. > > On Mon, Nov 16, 2009 at 2:50 PM, Uwe Schindler <u...@thetaphi.de > <mailto:u...@thetaphi.de>> wrote: > > But it is a general warning that should be placed in the Wiki: If you > upgrade from Java 1.4 to Java 5, think about reindexing. > > > > It has definitely nothing to do with 3.0, because uses could have > changed (and most of them have) before. > > ----- > Uwe Schindler > H.-H.-Meier-Allee 63, D-28213 Bremen > http://www.thetaphi.de > eMail: u...@thetaphi.de <mailto:u...@thetaphi.de> > > ------------------------------------------------------------------------ > > *From:* Robert Muir [mailto:rcm...@gmail.com <mailto:rcm...@gmail.com>] > *Sent:* Monday, November 16, 2009 8:45 PM > > > *To:* java-dev@lucene.apache.org <mailto:java-dev@lucene.apache.org> > *Subject:* Re: Why release 3.0? > > > > right, my point is its true its nothing to do with Lucene at all, really. > > but the reality is we should clarify this to users I think. > > Its especially complex in the current StandardTokenizer, which uses a > mix of hardcoded ranges and properties, can you tell me if you should > reindex for given language X? > I wouldn't want to answer that question right now. > > On Mon, Nov 16, 2009 at 2:42 PM, Uwe Schindler <u...@thetaphi.de > <mailto:u...@thetaphi.de>> wrote: > > We tried out: Character.getType() for these two chars: > > > > Java 5: > '\u00AD' = 16 > '\u06DD' = 16 > > Java 1.4: > '\u00AD' = 20 > '\u06DD' = 7 > > > > The first is the soft hyphen. > > ----- > Uwe Schindler > H.-H.-Meier-Allee 63, D-28213 Bremen > http://www.thetaphi.de > eMail: u...@thetaphi.de <mailto:u...@thetaphi.de> > > ------------------------------------------------------------------------ > > *From:* Robert Muir [mailto:rcm...@gmail.com <mailto:rcm...@gmail.com>] > *Sent:* Monday, November 16, 2009 8:37 PM > > > *To:* java-dev@lucene.apache.org <mailto:java-dev@lucene.apache.org> > *Subject:* Re: Why release 3.0? > > > > right, its nothing to do with lucene, instead due to property changes, > etc. > > i just think we should inform users on java 1.4/2.9 that if they > upgrade to java 1.5/3.0, they should reindex. > > the reason i say this about properties, is there are some that change > that will affect tokenizers, i give two examples, a hyphen that > changes from punctuation to format (might affect SolrWordDelimiterFilter), > and arabic ayah which changes from NSM to format, which surely affects > ArabicLetterTokenizer. > > On Mon, Nov 16, 2009 at 2:33 PM, Steven A Rowe <sar...@syr.edu > <mailto:sar...@syr.edu>> wrote: > > Hi Robert, > > I agree that the Unicode version supported by the JVM, as you say, > really has nothing to do with Lucene. > > The disruption here is users' upgrading from Java 1.4 to 1.5+, not > when they upgrade Lucene. I'd guess with few exceptions that most > people have been using Lucene with 1.5+ for a couple of years now, though. > > But even the upgrade from Java 1.4 to 1.5+ will have (had) zero impact > on most Lucene users, assuming that most use Latin-1 exclusively; > although I haven't looked, I'd be surprised if Latin-1 characters > changed much, if at all, from Unicode 3.0 to 4.0. > > It would be useful, I think, to include (a pointer to?) a description > of the details of the Unicode 3.0->4.0 differences in the Lucene 3.0 > release notes, since the minimum required Java version, and so also > the supported Unicode version, changes then. > > Steve > > > On 11/16/2009 at 2:15 PM, Robert Muir wrote: > > the problem is that the properties have changed for various characters, > > and new characters were added. > > > > it really has nothing to do with lucene, but the idea you can go from > > jdk 1.4/lucene 2.9 to jdk 1.5/lucene3.0 without reindexing is not true. > > > > > > On Mon, Nov 16, 2009 at 2:12 PM, Uwe Schindler <u...@thetaphi.de > <mailto:u...@thetaphi.de>> wrote: > > > > > > But an UTF-8 stream from Java 4 can still be read with Java 5, > > what is the problem? Java 5 extended Unicode support, but an index > > created with older versions can still be read. UTF-8 is standardized… > > > > > > > > ----- > > Uwe Schindler > > H.-H.-Meier-Allee 63, D-28213 Bremen > > http://www.thetaphi.de > > eMail: u...@thetaphi.de <mailto:u...@thetaphi.de> > > > > > > ________________________________ > > > > > > From: Robert Muir [mailto:rcm...@gmail.com > <mailto:rcm...@gmail.com>] > > Sent: Monday, November 16, 2009 8:09 PM > > > > To: java-dev@lucene.apache.org <mailto:java-dev@lucene.apache.org> > > Subject: Re: Why release 3.0? > > > > > > > > uwe, on topic please read my comment on LUCENE-1689, because > > unicode version was bumped in jdk 1.5, i believe this index backwards > > compatibility is only theoretical > > > > On Mon, Nov 16, 2009 at 2:05 PM, Uwe Schindler <u...@thetaphi.de > <mailto:u...@thetaphi.de>> wrote: > > > > 2.9 has *not* the same format as 3.0, an index created with 3.0 > > cannot be read with 2.9. This is because compressed field support was > > removed and therefore the version number of the stored fields file was > > upgraded. But indexes from 2.9 can be read with 3.0 and support may get > > removed in 4.0. 3.0 Indexes can be read until version 4.9. > > > > > > > > Uwe > > > > ----- > > Uwe Schindler > > H.-H.-Meier-Allee 63, D-28213 Bremen > > http://www.thetaphi.de > > eMail: u...@thetaphi.de <mailto:u...@thetaphi.de> > > > > > > ________________________________ > > > > > > From: Jake Mannix [mailto:jake.man...@gmail.com > <mailto:jake.man...@gmail.com>] > > Sent: Monday, November 16, 2009 7:15 PM > > > > > > To: java-dev@lucene.apache.org <mailto:java-dev@lucene.apache.org> > > > > Subject: Re: Why release 3.0? > > > > > > > > Don't users need to upgrade to 3.0 because 3.1 won't be > > necessarily able to read your > > 2.4 index file formats? I suppose if you've already upgraded to > > 2.9, then all is well because > > 2.9 is the same format as 3.0, but we can't assume all users > > upgraded from 2.4 to 2.9. > > > > If you've done that already, then 3.0 might not be necessary, > > but if you're on 2.4 right now, > > you will be in for a bad surprise if you try to upgrade to 3.1. > > > > -jake > > > > On Mon, Nov 16, 2009 at 10:10 AM, Erick Erickson > > <erickerick...@gmail.com <mailto:erickerick...@gmail.com>> wrote: > > > > One of my "specialties" is asking obvious questions just to see > > if everyone's assumptions are aligned. So with the discussion about > > branching 3.0 I have to ask "Is there going to be any 3.0 release > > intended for *production*?". And if not, would we save a lot of > > work by just not worrying about retrofitting fixes to a 3.0 branch > > and carrying on with 3.1 as the first *supported* 3.x release? > > > > Since 3.0 is "upgrade-to-java5 and remove deprecations", I'm not > > sure *as a user* I see a good reason to upgrade to 3.0. Getting a > > "beta/snapshot" release to get a head start on cleaning up my code > > does seem worthwhile, if I have the spare time. And having a base > > 3.0 version that's not changing all over the place would be useful > > for that. > > > > That said, I'm also not terribly comfortable with a "release" > > that's out there and unsupported. > > > > Apologies if this has already been discussed, but I don't > > remember it. Although my memory isn't what it used to be (but > > some would claim it never was<G>)... > > > > Erick > > > > > -- > Robert Muir > rcm...@gmail.com <mailto:rcm...@gmail.com> > > > > > -- > Robert Muir > rcm...@gmail.com <mailto:rcm...@gmail.com> > > > > > -- > Robert Muir > rcm...@gmail.com <mailto:rcm...@gmail.com> > -- - Mark http://www.lucidimagination.com --------------------------------------------------------------------- To unsubscribe, e-mail: java-dev-unsubscr...@lucene.apache.org For additional commands, e-mail: java-dev-h...@lucene.apache.org
