queryscorer.html

Lucene是apache软件基金会[4] jakarta项目组的一个子项目

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<A NAME="QueryScorer(org.apache.lucene.search.Query)"><!-- --></A><H3>
QueryScorer</H3>
<PRE>
public <B>QueryScorer</B>(<A HREF="../../../../../org/apache/lucene/search/Query.html" title="class in org.apache.lucene.search">Query</A>&nbsp;query)</PRE>
<DL>
<DT><B>Parameters:</B><DD><CODE>query</CODE> - a Lucene query (ideally rewritten using query.rewrite 
 before being passed to this class and the searcher)</DL>
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<A NAME="QueryScorer(org.apache.lucene.search.Query, java.lang.String)"><!-- --></A><H3>
QueryScorer</H3>
<PRE>
public <B>QueryScorer</B>(<A HREF="../../../../../org/apache/lucene/search/Query.html" title="class in org.apache.lucene.search">Query</A>&nbsp;query,
                   <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A>&nbsp;fieldName)</PRE>
<DL>
<DT><B>Parameters:</B><DD><CODE>query</CODE> - a Lucene query (ideally rewritten using query.rewrite 
 before being passed to this class and the searcher)<DD><CODE>fieldName</CODE> - the Field name which is used to match Query terms</DL>
<HR>

<A NAME="QueryScorer(org.apache.lucene.search.Query, org.apache.lucene.index.IndexReader, java.lang.String)"><!-- --></A><H3>
QueryScorer</H3>
<PRE>
public <B>QueryScorer</B>(<A HREF="../../../../../org/apache/lucene/search/Query.html" title="class in org.apache.lucene.search">Query</A>&nbsp;query,
                   <A HREF="../../../../../org/apache/lucene/index/IndexReader.html" title="class in org.apache.lucene.index">IndexReader</A>&nbsp;reader,
                   <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A>&nbsp;fieldName)</PRE>
<DL>
<DT><B>Parameters:</B><DD><CODE>query</CODE> - a Lucene query (ideally rewritten using query.rewrite 
 before being passed to this class and the searcher)<DD><CODE>reader</CODE> - used to compute IDF which can be used to a) score selected fragments better 
 b) use graded highlights eg set font color intensity<DD><CODE>fieldName</CODE> - the field on which Inverse Document Frequency (IDF) calculations are based</DL>
<HR>

<A NAME="QueryScorer(org.apache.lucene.search.highlight.WeightedTerm[])"><!-- --></A><H3>
QueryScorer</H3>
<PRE>
public <B>QueryScorer</B>(<A HREF="../../../../../org/apache/lucene/search/highlight/WeightedTerm.html" title="class in org.apache.lucene.search.highlight">WeightedTerm</A>[]&nbsp;weightedTerms)</PRE>
<DL>
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<A NAME="startFragment(org.apache.lucene.search.highlight.TextFragment)"><!-- --></A><H3>
startFragment</H3>
<PRE>
public void <B>startFragment</B>(<A HREF="../../../../../org/apache/lucene/search/highlight/TextFragment.html" title="class in org.apache.lucene.search.highlight">TextFragment</A>&nbsp;newFragment)</PRE>
<DL>
<DD><B>Description copied from interface: <CODE><A HREF="../../../../../org/apache/lucene/search/highlight/Scorer.html" title="interface in org.apache.lucene.search.highlight">Scorer</A></CODE></B></DD>
<DD>called when a new fragment is started for consideration
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../../org/apache/lucene/search/highlight/Scorer.html#startFragment(org.apache.lucene.search.highlight.TextFragment)">startFragment</A></CODE> in interface <CODE><A HREF="../../../../../org/apache/lucene/search/highlight/Scorer.html" title="interface in org.apache.lucene.search.highlight">Scorer</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>newFragment</CODE> - </DL>
</DD>
</DL>
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<A NAME="getTokenScore(org.apache.lucene.analysis.Token)"><!-- --></A><H3>
getTokenScore</H3>
<PRE>
public float <B>getTokenScore</B>(<A HREF="../../../../../org/apache/lucene/analysis/Token.html" title="class in org.apache.lucene.analysis">Token</A>&nbsp;token)</PRE>
<DL>
<DD><B>Description copied from interface: <CODE><A HREF="../../../../../org/apache/lucene/search/highlight/Scorer.html" title="interface in org.apache.lucene.search.highlight">Scorer</A></CODE></B></DD>
<DD>Called for each token in the current fragment
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../../org/apache/lucene/search/highlight/Scorer.html#getTokenScore(org.apache.lucene.analysis.Token)">getTokenScore</A></CODE> in interface <CODE><A HREF="../../../../../org/apache/lucene/search/highlight/Scorer.html" title="interface in org.apache.lucene.search.highlight">Scorer</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>token</CODE> - The token to be scored
<DT><B>Returns:</B><DD>a score which is passed to the Highlighter class to influence the mark-up of the text
 (this return value is NOT used to score the fragment)</DL>
</DD>
</DL>
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<A NAME="getFragmentScore()"><!-- --></A><H3>
getFragmentScore</H3>
<PRE>
public float <B>getFragmentScore</B>()</PRE>
<DL>
<DD><B>Description copied from interface: <CODE><A HREF="../../../../../org/apache/lucene/search/highlight/Scorer.html" title="interface in org.apache.lucene.search.highlight">Scorer</A></CODE></B></DD>
<DD>Called when the highlighter has no more tokens for the current fragment - the scorer returns
 the weighting it has derived for the most recent fragment, typically based on the tokens
 passed to getTokenScore().
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../../org/apache/lucene/search/highlight/Scorer.html#getFragmentScore()">getFragmentScore</A></CODE> in interface <CODE><A HREF="../../../../../org/apache/lucene/search/highlight/Scorer.html" title="interface in org.apache.lucene.search.highlight">Scorer</A></CODE></DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
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<A NAME="allFragmentsProcessed()"><!-- --></A><H3>
allFragmentsProcessed</H3>
<PRE>
public void <B>allFragmentsProcessed</B>()</PRE>
<DL>
<DD><DL>
</DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
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<A NAME="getMaxTermWeight()"><!-- --></A><H3>
getMaxTermWeight</H3>
<PRE>
public float <B>getMaxTermWeight</B>()</PRE>
<DL>
<DD><DL>
</DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>The highest weighted term (useful for passing to GradientFormatter to set
 top end of coloring scale.</DL>
</DD>
</DL>
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