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Topic: Lucene


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In the News (Wed 9 Dec 09)

  
  Apache Lucene - Overview
Lucene will once again be well represented at ApacheCon USA in Atlanta this November 12-16, 2007.
Lucene 2.2 includes index format changes that are not readable by older versions of Lucene.
Lucene 2.1 includes index format changes that are not readable by older versions of Lucene.
lucene.apache.org /java/docs   (448 words)

  
 Welcome to Lucene!
Lucy is a loose C port of Lucene Java, with Perl and Ruby bindings.
Lucene projects will be well represented at ApacheCon Europe in Amsterdam this year.
The Lucene PMC has approved the Lucy sub-project, and now that the mailing lists, repositories, and such are in place, we're rolling up our sleeves and getting to work.
lucene.apache.org   (824 words)

  
  Lucene Wikipedia indexer (Java software project)
This page may be of interest to you if you are a Java developer who wants to (1) get to know the basics of using Lucene in combination with an (2) easy-to-follow explanatory text and (3) ready-to-use Java code.
Lucene is a text search engine library written in Java (it has been ported to other languages as well).
and the path to the Lucene JAR file), then comes the indexer class name (including its package name wikipedia), then the file name of the article data, then the directory name where the index will be put.
schmidt.devlib.org /software/lucene-wikipedia.html   (1465 words)

  
 [No title]
Lucene indexes text, and part of the first step is cleaning up the text.
Lucene provides a couple different Analyzers, and you can make but your own, but the BIG GOTCHA people keep running into is that you must make sure you use the same sort of analyzer for indexing and for searching.
We've already seen that Lucene is a piece of cake to use, and the servlet/jsp stuff isn't much harder (unless you want to make it harder, which of course is possible to do).
www.darksleep.com /lucene   (3023 words)

  
 Lucene - Wikipedia, the free encyclopedia
Lucene is a free open source, information retrieval API originally implemented in Java by Doug Cutting.
This has occasionally led to the misperception that Lucene is itself a search engine with built-in crawling and HTML parsing functionality.
At the core of Lucene's logical architecture is a notion of a document containing fields of text.
en.wikipedia.org /wiki/Lucene   (502 words)

  
 Apache Lucene - Query Parser Syntax
Lucene supports using parentheses to group clauses to form sub queries.
Lucene supports using parentheses to group multiple clauses to a single field.
Lucene supports escaping special characters that are part of the query syntax.
lucene.apache.org /java/docs/queryparsersyntax.html   (1408 words)

  
 java.net: Lucene Intro
Editor's note: We are rerunning this Introduction to Lucene that originally ran in July 2003 in honor of the publication of "Lucene in action" by Otis Gospodnetic and Erik Hatcher.
It is beyond the scope of this article to delve into Lucene scoring, but rest assured that its default behavior is plenty good enough for the majority of applications, and it can be customized in the rare cases that the default behavior is insufficient.
Lucene is probably one of the best pieces of software that I've come across in a long time.
today.java.net /pub/a/today/2003/07/30/LuceneIntro.html   (2542 words)

  
 Lucene   (Site not responding. Last check: 2007-10-24)
Lucene is used to add search functionality to Web site which is one of the easiest ways to improve your user's experience, but integrating a search engine with your application isn't necessarily very easy.
Lucene works with any kind of text data; however, there is no built-in support for Word, Excel, PDF, and XML.
Lucene accepts Document objects that represent a single piece of content, such as a Web page or a PDF file.
triton.towson.edu /~schmitt/617/Lucene.html   (474 words)

  
 Enterprise Search: The Case for Lucene
Lucene, part of the Apache Group's Jakarta Project, is a powerful open source search engine implemented in Java.
When source data changes, the Lucene indices must be updated to reflect the new terms present in the modified content.
Lucene is a reasonable toolkit for programmers, and for some projects may be a real alternative to commercial offerings.
www.ideaeng.com /pub/entsrch/issue03/article03.html   (1122 words)

  
 Apache Lucene - Query Parser Syntax
Although Lucene provides the ability to create your own queries through its API, it also provides a rich query language through the Query Parser, a lexer which interprets a string into a Lucene Query using JavaCC.
Lucene supports finding words are a within a specific distance away.
Lucene supports escaping special characters that are part of the query syntax.
jakarta.apache.org /lucene/docs/queryparsersyntax.html   (1401 words)

  
 jGuru: Lucene FAQ Home Page
Lucene is an open-source, high-performance, full-featured text search engine written entirely in Java.
Lucene is not limited to English, nor any other language.
Lucene is Doug Cutting's wife's middle name, and her maternal grandmother's first name.
www.jguru.com /faq/Lucene   (648 words)

  
 ONJava.com -- Advanced Text Indexing with Lucene
Lucene adds segments as new documents are added to the index, and merges segments every so often.
When new documents are added to a Lucene index, they are initially stored in memory instead of being immediately written to the disk.
If you are using Lucene on a computer that uses a flavor of the UNIX OS, you can see the maximum number of open files allowed from the command line.
www.onjava.com /pub/a/onjava/2003/03/05/lucene.html   (1328 words)

  
 Integrate advanced search functionalities into your apps - Java World
Lucene, an open source project hosted by Apache, aims to produce high-performance full-text indexing and search software.
Although Lucene is well known for its full-text indexing, many developers are less aware that it can also provide powerful complementary searching, filtering, and sorting functionalities.
Lucene needs to create its own set of indexes, using your data, so it can perform high-performance full-text searching, filtering, and sorting operations on your data.
www.javaworld.com /javaworld/jw-09-2006/jw-0925-lucene.html   (584 words)

  
 Delve inside the Lucene indexing mechanism
Keep in mind that Lucene is not a ready-to-use application, but rather an IR Library that lets you add searching and indexing functionality to your application.
Lucene doesn't provide a method to update the document in the index directly, but if you want to do so, first remove the documents from the index and then add the updated version of this document to the index.
A lecture on Lucene, presented by Doug Cutting at the University of Pisa on November 24, 2004: Explore this brief introduction to Lucene.
www.ibm.com /developerworks/library/wa-lucene/?ca=drs-t2606   (2262 words)

  
 Welcome to Lucene in Action   (Site not responding. Last check: 2007-10-24)
Lucene is a gem in the open-source world--a highly scalable, fast search engine.
Lucene powers search in surprising places--in discussion groups at Fortune 100 companies, in commercial issue trackers, in email search from Microsoft, in the Nutch web search engine (that scales to billions of pages).
Otis Gospodnetić is a Lucene committer, a member of Apache Jakarta Project Management Committee, and maintainer of the jGuru's Lucene FAQ.
www.lucenebook.com   (327 words)

  
 Running Lucene Search on WebLogic Portal 8.1
Lucene is an open source search engine framework available from Apache.org under the Jakarta family of open source projects.
Lucene is written in 100% Java with emphasis on performance.
Lucene supports several types of searches that are common in the industry.
dev2dev.bea.com /pub/a/2004/08/lucene_search_wlp81.html   (1126 words)

  
 Parsing, indexing, and searching XML with Digester and Lucene
Lucene developer Otis Gospodnetic shows you how it's done, with example code that you can compile and run.
Lucene also offers the ability to search multiple indices at once, as well as the ability to search indices located on remote computers.
For more complex and generic solutions, visit Lucene's contributions page, a link to which is included in Resources.
www-128.ibm.com /developerworks/java/library/j-lucene   (1823 words)

  
 Chapter 5. Hibernate Lucene Integration   (Site not responding. Last check: 2007-10-24)
Lucene is a high-performance Java search engine library available from the Apache Software Foundation.
Lucene has a notion of Directory where the index is stored.
Each indexed entity is associated to a Lucene index (an index can be shared by several entities but this is not usually the case).
www.hibernate.org /hib_docs/annotations/reference/en/html/lucene.html   (454 words)

  
 Dr. Dobb's | Porting Lucene to .NET Using Visual J# | December 1, 2003   (Site not responding. Last check: 2007-10-24)
The Lucene library must be callable from a C# console search application using the index files generated by the IndexFiles application.
The core Lucene source is decomposed into several directories, with each directory containing a functional area, such as search, data store, and so forth.
The first step in porting Lucene is to generate a series of source files using the JavaCC tool, a Java-based parser generator application requiring the Java Runtime on the development machine (http://javacc.dev.java.net/).
www.ddj.com /184405529   (2365 words)

  
 Lucene
Lucene can index any text-based information you like and then find it later based on various search criteria.
Lucene has a very flexible and powerful search capability that uses fuzzy logic to locate indexed items.
Lucene is a highly sophisticated and yet simple to use search engine.
www.javaranch.com /newsletter/200404/Lucene.html   (1856 words)

  
 Compass - Lucene
Lucene Jdbc Directory: An implementation of Lucene Directory to store the index within a database (using Jdbc).
It is difficult, especially for developers unfamiliar with Lucene, to understand how to perform operations against the index (while still having a performant system).
If OSEM is not required in the application, since it already has a domain model, or already works with Lucene, it is even simpler to work with Resources or migrate from Lucene to Compass.
www.opensymphony.com /compass/content/lucene.html   (614 words)

  
 Lucene in Action: Meet Lucene Pt. 1 - WebReference.com-
Searching in Lucene is as fast and simple as indexing; the power of this functionality is astonishing, as chapters 3 and 5 will show you.
We instructed Indexer to create a Lucene index in a build/index directory, relative to the directory from which we invoked Indexer.
Written by Otis Gospodnetic and Erik Hatcher and reproduced from "Lucene in Action" by permission of Manning Publications Co. ISBN 1932394281, copyright 2004.
www.webreference.com /programming/lucene/4.html   (920 words)

  
 Lucene in Action   (Site not responding. Last check: 2007-10-24)
Firstly, all code examples from Lucene in Action are free and available for download, even for those who don't own a copy of the book.
One of the novel and interesting aspects of Lucene in Action is that most of its code examples are written as unit tests.
Lucene expert Chris Hostetter announced, with detailed implementation notes, that CNET.com's Product Category Listings are powered by Lucene.
www.lucenebook.com /blog   (1160 words)

  
 Enterprise Java Community: I Love Lucene
Lucene has always interested me, as it isn’t a typical open source project.
This is definitely the case with Lucene (and the only time when this isn’t the case is if your search goes directly to the database).
The Index Builder abstracts the details of Lucene, and the Index Sources that are used to create the index itself.
www.theserverside.com /articles/article.tss?l=ILoveLucene   (3353 words)

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