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LengthNormModifier (Lucene 2.1.0 API)
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org.apache.lucene.misc</FONT>
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Class LengthNormModifier</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"><B>org.apache.lucene.misc.LengthNormModifier</B>
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<DT>public class <B>LengthNormModifier</B><DT>extends <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A></DL>
<P>
Given a directory, a Similarity, and a list of fields, updates the fieldNorms in place for every document using the Similarity.lengthNorm. <p> NOTE: This only works if you do <b>not</b> use field/document boosts in your index. </p>
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<DT><B>Version:</B></DT> <DD>$Id$</DD></DL>
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<TD><CODE><B><A HREF="../../../../org/apache/lucene/misc/LengthNormModifier.html#LengthNormModifier(org.apache.lucene.store.Directory, org.apache.lucene.search.Similarity)">LengthNormModifier</A></B>(<A HREF="../../../../org/apache/lucene/store/Directory.html" title="class in org.apache.lucene.store">Directory</A> d, <A HREF="../../../../org/apache/lucene/search/Similarity.html" title="class in org.apache.lucene.search">Similarity</A> s)</CODE>
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Constructor for code that wishes to use this class progaomatically.</TD>
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<CODE>static void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/apache/lucene/misc/LengthNormModifier.html#main(java.lang.String[])">main</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>[] args)</CODE>
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Command Line Execution method </TD>
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<CODE> void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/apache/lucene/misc/LengthNormModifier.html#reSetNorms(java.lang.String)">reSetNorms</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> field)</CODE>
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Resets the norms for the specified field.</TD>
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<A NAME="LengthNormModifier(org.apache.lucene.store.Directory, org.apache.lucene.search.Similarity)"><!-- --></A><H3>
LengthNormModifier</H3>
<PRE>
public <B>LengthNormModifier</B>(<A HREF="../../../../org/apache/lucene/store/Directory.html" title="class in org.apache.lucene.store">Directory</A> d, <A HREF="../../../../org/apache/lucene/search/Similarity.html" title="class in org.apache.lucene.search">Similarity</A> s)</PRE>
<DL>
<DD>Constructor for code that wishes to use this class progaomatically.
<P>
<DT><B>Parameters:</B><DD><CODE>d</CODE> - The Directory to modify<DD><CODE>s</CODE> - The Similarity to use in <code>reSetNorms</code></DL>
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<A NAME="main(java.lang.String[])"><!-- --></A><H3>
main</H3>
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public static void <B>main</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>[] args) throws <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/io/IOException.html" title="class or interface in java.io">IOException</A></PRE>
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<DD>Command Line Execution method <pre> Usage: LengthNormModifier /path/index package.SimilarityClassName field1 field2 ... </pre>
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<DT><B>Throws:</B><DD><CODE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/io/IOException.html" title="class or interface in java.io">IOException</A></CODE></DL>
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<A NAME="reSetNorms(java.lang.String)"><!-- --></A><H3>
reSetNorms</H3>
<PRE>
public void <B>reSetNorms</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> field) throws <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/io/IOException.html" title="class or interface in java.io">IOException</A></PRE>
<DL>
<DD>Resets the norms for the specified field. <p> Opens a new IndexReader on the Directory given to this instance, modifies the norms using the Similarity given to this instance, and closes the IndexReader. </p>
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>field</CODE> - the field whose norms should be reset<DT><B>Throws:</B><DD><CODE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/io/IOException.html" title="class or interface in java.io">IOException</A></CODE></DL>
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