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Apache Lucene - Building and Installing the Basic Demo
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< h1 >
Apache Lucene - Building and Installing the Basic Demo
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< a href = "#About this Document" > About this Document< / a >
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< a href = "#About the Demos" > About the Demos< / a >
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< a href = "#Setting your CLASSPATH" > Setting your CLASSPATH< / a >
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< a href = "#Indexing Files" > Indexing Files< / a >
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< a href = "#About the code..." > About the code...< / a >
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< a name = "N10013" > < / a > < a name = "About this Document" > < / a >
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This document is intended as a "getting started" guide to using and running the Lucene demos.
It walks you through some basic installation and configuration.
< / p >
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< a name = "N1001C" > < / a > < a name = "About the Demos" > < / a >
< h2 class = "boxed" > About the Demos< / h2 >
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< p >
The Lucene command-line demo code consists of two applications that demonstrate various
functionalities of Lucene and how one should go about adding Lucene to their applications.
< / p >
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< a name = "N10025" > < / a > < a name = "Setting your CLASSPATH" > < / a >
< h2 class = "boxed" > Setting your CLASSPATH< / h2 >
< div class = "section" >
< p >
First, you should < a href = "http://www.apache.org/dyn/closer.cgi/lucene/java/" > download< / a > the
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latest Lucene distribution and then extract it to a working directory. Alternatively, you can < a href = "http://wiki.apache.org/lucene-java/SourceRepository" > check out the sources from
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Subversion< / a > , and then run < span class = "codefrag" > ant war-demo< / span > to generate the JARs and WARs.
< / p >
< p >
You should see the Lucene JAR file in the directory you created when you extracted the archive. It
should be named something like < span class = "codefrag" > lucene-core-{version}.jar< / span > . You should also see a file
called < span class = "codefrag" > lucene-demos-{version}.jar< / span > . If you checked out the sources from Subversion then
the JARs are located under the < span class = "codefrag" > build< / span > subdirectory (after running < span class = "codefrag" > ant< / span >
successfully). Put both of these files in your Java CLASSPATH.
< / p >
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< a name = "N10048" > < / a > < a name = "Indexing Files" > < / a >
< h2 class = "boxed" > Indexing Files< / h2 >
< div class = "section" >
< p >
Once you've gotten this far you're probably itching to go. Let's < b > build an index!< / b > Assuming
you've set your CLASSPATH correctly, just type:
< pre >
java org.apache.lucene.demo.IndexFiles {full-path-to-lucene}/src
< / pre >
This will produce a subdirectory called < span class = "codefrag" > index< / span > which will contain an index of all of the
Lucene source code.
< / p >
< p >
To < b > search the index< / b > type:
< pre >
java org.apache.lucene.demo.SearchFiles
< / pre >
You'll be prompted for a query. Type in a swear word and press the enter key. You'll see that the
Lucene developers are very well mannered and get no results. Now try entering the word "vector".
That should return a whole bunch of documents. The results will page at every tenth result and ask
you whether you want more results.
< / p >
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< a name = "N10063" > < / a > < a name = "About the code..." > < / a >
< h2 class = "boxed" > About the code...< / h2 >
< div class = "section" >
< p >
< a href = "demo2.html" > read on> > > < / a >
< / p >
< / div >
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