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FSDirectory (Lucene 2.1.0 API)
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org.apache.lucene.store</FONT>
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Class FSDirectory</H2>
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<A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html" title="class or interface in java.lang">java.lang.Object</A>
<IMG SRC="../../../../resources/inherit.gif" ALT="extended by"><A HREF="../../../../org/apache/lucene/store/Directory.html" title="class in org.apache.lucene.store">org.apache.lucene.store.Directory</A>
<IMG SRC="../../../../resources/inherit.gif" ALT="extended by"><B>org.apache.lucene.store.FSDirectory</B>
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<DT><B>Direct Known Subclasses:</B> <DD><A HREF="../../../../org/apache/lucene/store/MMapDirectory.html" title="class in org.apache.lucene.store">MMapDirectory</A></DD>
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<DT>public class <B>FSDirectory</B><DT>extends <A HREF="../../../../org/apache/lucene/store/Directory.html" title="class in org.apache.lucene.store">Directory</A></DL>
<P>
Straightforward implementation of <A HREF="../../../../org/apache/lucene/store/Directory.html" title="class in org.apache.lucene.store"><CODE>Directory</CODE></A> as a directory of files. Locking implementation is by default the <A HREF="../../../../org/apache/lucene/store/SimpleFSLockFactory.html" title="class in org.apache.lucene.store"><CODE>SimpleFSLockFactory</CODE></A>, but can be changed either by passing in a <A HREF="../../../../org/apache/lucene/store/LockFactory.html" title="class in org.apache.lucene.store"><CODE>LockFactory</CODE></A> instance to <code>getDirectory</code>, or specifying the LockFactory class by setting <code>org.apache.lucene.store.FSDirectoryLockFactoryClass</code> Java system property, or by calling <A HREF="../../../../org/apache/lucene/store/Directory.html#setLockFactory(org.apache.lucene.store.LockFactory)"><CODE>Directory.setLockFactory(org.apache.lucene.store.LockFactory)</CODE></A> after creating the Directory. <p>Directories are cached, so that, for a given canonical path, the same FSDirectory instance will always be returned by <code>getDirectory</code>. This permits synchronization on directories.</p>
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<DT><B>Author:</B></DT> <DD>Doug Cutting</DD><DT><B>See Also:</B><DD><A HREF="../../../../org/apache/lucene/store/Directory.html" title="class in org.apache.lucene.store"><CODE>Directory</CODE></A></DL>
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<CODE>static <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/apache/lucene/store/FSDirectory.html#LOCK_DIR">LOCK_DIR</A></B></CODE>
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<B>Deprecated.</B> <I>As of 2.1, <code>LOCK_DIR</code> is unused because the write.lock is now stored by default in the index directory. If you really want to store locks elsewhere you can create your own <A HREF="../../../../org/apache/lucene/store/SimpleFSLockFactory.html" title="class in org.apache.lucene.store"><CODE>SimpleFSLockFactory</CODE></A> (or <A HREF="../../../../org/apache/lucene/store/NativeFSLockFactory.html" title="class in org.apache.lucene.store"><CODE>NativeFSLockFactory</CODE></A>, etc.) passing in your preferred lock directory. Then, pass this <code>LockFactory</code> instance to one of the <code>getDirectory</code> methods that take a <code>lockFactory</code> (for example, <A HREF="../../../../org/apache/lucene/store/FSDirectory.html#getDirectory(java.lang.String, org.apache.lucene.store.LockFactory)"><CODE>getDirectory(String, LockFactory)</CODE></A>).</I></TD>
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<TD><B>Fields inherited from class org.apache.lucene.store.<A HREF="../../../../org/apache/lucene/store/Directory.html" title="class in org.apache.lucene.store">Directory</A></B></TD>
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<TD><CODE><A HREF="../../../../org/apache/lucene/store/Directory.html#lockFactory">lockFactory</A></CODE></TD>
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<CODE>protected </CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/apache/lucene/store/FSDirectory.html#FSDirectory()">FSDirectory</A></B>()</CODE>
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<CODE> void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/apache/lucene/store/FSDirectory.html#close()">close</A></B>()</CODE>
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Closes the store to future operations.</TD>
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> <A HREF="../../../../org/apache/lucene/store/IndexOutput.html" title="class in org.apache.lucene.store">IndexOutput</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/apache/lucene/store/FSDirectory.html#createOutput(java.lang.String)">createOutput</A></B>(<A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A> name)</CODE>
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Creates a new, empty file in the directory with the given name.</TD>
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<CODE> void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/apache/lucene/store/FSDirectory.html#deleteFile(java.lang.String)">deleteFile</A></B>(<A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A> name)</CODE>
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Removes an existing file in the directory.</TD>
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<CODE> boolean</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/apache/lucene/store/FSDirectory.html#fileExists(java.lang.String)">fileExists</A></B>(<A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A> name)</CODE>
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Returns true iff a file with the given name exists.</TD>
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<CODE> long</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/apache/lucene/store/FSDirectory.html#fileLength(java.lang.String)">fileLength</A></B>(<A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A> name)</CODE>
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