:) But those days are numbered!
Mike On Mon, Jun 15, 2009 at 11:55 AM, Uwe Schindler<u...@thetaphi.de> wrote: > By the way: > I compiled core and corresponding tests with an old JDK 1.4 version, I found > locally on my machine. Works fine! > > Uwe > > ----- > Uwe Schindler > H.-H.-Meier-Allee 63, D-28213 Bremen > http://www.thetaphi.de > eMail: u...@thetaphi.de > >> -----Original Message----- >> From: Uwe Schindler (JIRA) [mailto:j...@apache.org] >> Sent: Monday, June 15, 2009 5:48 PM >> To: java-dev@lucene.apache.org >> Subject: [jira] Commented: (LUCENE-1606) Automaton Query/Filter (scalable >> regex) >> >> >> [ https://issues.apache.org/jira/browse/LUCENE- >> 1606?page=com.atlassian.jira.plugin.system.issuetabpanels:comment- >> tabpanel&focusedCommentId=12719606#action_12719606 ] >> >> Uwe Schindler commented on LUCENE-1606: >> --------------------------------------- >> >> Doesn't seem to work, I will check the sources: >> >> {code} >> compile-core: >> [javac] Compiling 12 source files to >> C:\Projects\lucene\trunk\build\contrib\regex\classes\java >> [javac] >> C:\Projects\lucene\trunk\contrib\regex\src\java\org\apache\lucene\search\r >> egex\AutomatonFuzzyQuery.java:11: cannot access >> dk.brics.automaton.Automaton >> [javac] bad class file: >> C:\Projects\lucene\trunk\contrib\regex\lib\automaton >> .jar(dk/brics/automaton/Automaton.class) >> [javac] class file has wrong version 49.0, should be 48.0 >> [javac] Please remove or make sure it appears in the correct >> subdirectory of >> the classpath. >> [javac] import dk.brics.automaton.Automaton; >> [javac] ^ >> [javac] 1 error >> {code} >> >> > Automaton Query/Filter (scalable regex) >> > --------------------------------------- >> > >> > Key: LUCENE-1606 >> > URL: https://issues.apache.org/jira/browse/LUCENE-1606 >> > Project: Lucene - Java >> > Issue Type: New Feature >> > Components: contrib/* >> > Reporter: Robert Muir >> > Assignee: Uwe Schindler >> > Priority: Minor >> > Fix For: 2.9 >> > >> > Attachments: automaton.patch, automatonMultiQuery.patch, >> automatonmultiqueryfuzzy.patch, automatonMultiQuerySmart.patch, >> automatonWithWildCard.patch, automatonWithWildCard2.patch, LUCENE- >> 1606.patch >> > >> > >> > Attached is a patch for an AutomatonQuery/Filter (name can change if its >> not suitable). >> > Whereas the out-of-box contrib RegexQuery is nice, I have some very >> large indexes (100M+ unique tokens) where queries are quite slow, 2 >> minutes, etc. Additionally all of the existing RegexQuery implementations >> in Lucene are really slow if there is no constant prefix. This >> implementation does not depend upon constant prefix, and runs the same >> query in 640ms. >> > Some use cases I envision: >> > 1. lexicography/etc on large text corpora >> > 2. looking for things such as urls where the prefix is not constant >> (http:// or ftp://) >> > The Filter uses the BRICS package (http://www.brics.dk/automaton/) to >> convert regular expressions into a DFA. Then, the filter "enumerates" >> terms in a special way, by using the underlying state machine. Here is my >> short description from the comments: >> > The algorithm here is pretty basic. Enumerate terms but instead of >> a binary accept/reject do: >> > >> > 1. Look at the portion that is OK (did not enter a reject state in >> the DFA) >> > 2. Generate the next possible String and seek to that. >> > the Query simply wraps the filter with ConstantScoreQuery. >> > I did not include the automaton.jar inside the patch but it can be >> downloaded from http://www.brics.dk/automaton/ and is BSD-licensed. >> >> -- >> This message is automatically generated by JIRA. >> - >> You can reply to this email to add a comment to the issue online. >> >> >> --------------------------------------------------------------------- >> To unsubscribe, e-mail: java-dev-unsubscr...@lucene.apache.org >> For additional commands, e-mail: java-dev-h...@lucene.apache.org > > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: java-dev-unsubscr...@lucene.apache.org > For additional commands, e-mail: java-dev-h...@lucene.apache.org > > --------------------------------------------------------------------- To unsubscribe, e-mail: java-dev-unsubscr...@lucene.apache.org For additional commands, e-mail: java-dev-h...@lucene.apache.org
