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View Code? Open in Web Editor NEWA copy of clucene from Qt (Assistant)
License: Other
A copy of clucene from Qt (Assistant)
License: Other
CLucene README ============== ------------------------------------------------------ CLucene is a C++ port of Lucene. It is a high-performance, full-featured text search engine written in C++. CLucene is faster than lucene as it is written in C++. ------------------------------------------------------ CLucene has contributions from many, see AUTHORS CLucene is distributed under the GNU Lesser General Public License (LGPL) *or* the Apache License, Version 2.0 See the LGPL.license and APACHE.license for the respective license information. Read COPYING for more about the license. Installation ------------ * For Linux, MacOSX, cygwin and MinGW build information, read INSTALL. * Boost.Jam files are provided in the root directory and subdirectories. * Microsoft Visual Studio (6&7) are provided in the win32 folder. Mailing List ------------ Questions and discussion should be directed to the CLucene mailing list at [email protected] Find subscription instructions at http://lists.sourceforge.net/lists/listinfo/clucene-developers Suggestions and bug reports can be made on our bug tracking database (http://sourceforge.net/tracker/?group_id=80013&atid=558446) The latest version ------------------ Details of the latest version can be found on the CLucene sourceforge project web site: http://www.sourceforge.net/projects/clucene Documentation ------------- Documentation is provided at http://clucene.sourceforge.net/doc/doxygen/html/ You can also build your own documentation by running doxygen from the root directory of clucene. CLucene is a very close port of Java Lucene, so you can also try looking at the Java Docs on http://lucene.apache.org/java/ Performance ----------- Very little benchmarking has been done on clucene. Andi Vajda posted some limited statistics on the clucene list a while ago with the following results. There are 250 HTML files under $JAVA_HOME/docs/api/java/util for about 6108kb of HTML text. org.apache.lucene.demo.IndexFiles with java and gcj: on mac os x 10.3.1 (panther) powerbook g4 1ghz 1gb: . running with java 1.4.1_01-99 : 20379 ms . running with gcj 3.3.2 -O2 : 17842 ms . running clucene 0.8.9's demo : 9930 ms I recently did some more tests and came up with these rough tests: 663mb (797 files) of Guttenberg texts on a Pentium 4 running Windows XP with 1 GB of RAM. Indexing max 100,000 fields • Jlucene: 646453ms. peak mem usage ~72mb, avg ~14mb ram • Clucene: 232141. peak mem usage ~60, avg ~4mb ram Searching indexing using 10,000 single word queries • Jlucene: ~60078ms and used ~13mb ram • Clucene: ~48359ms and used ~4.2mb ram Platform notes -------------- 'Too many open files' Some platforms don't provide enough file handles to run CLucene properly. To solve this, increase the open file limit: On Solaris: ulimit -n 1024 set rlim_fd_cur=1024 Acknowledgments ---------------- The Apache Lucene project is the basis for this software, so the biggest acknoledgment goes to that project. We wish to acknowledge the following copyrighted works that make up portions of the CLucene software: CLucene relies heavily on the use of autoconf and libtool to provide a build environment.
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