query.html
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Query (Lucene 2.1.0 API)
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org.apache.lucene.search</FONT>
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Class Query</H2>
<PRE>
<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.search.Query</B>
</PRE>
<DL>
<DT><B>All Implemented Interfaces:</B> <DD><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Cloneable.html" title="class or interface in java.lang">Cloneable</A>, <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/io/Serializable.html" title="class or interface in java.io">Serializable</A></DD>
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<DL>
<DT><B>Direct Known Subclasses:</B> <DD><A HREF="../../../../org/apache/lucene/search/BooleanQuery.html" title="class in org.apache.lucene.search">BooleanQuery</A>, <A HREF="../../../../org/apache/lucene/search/ConstantScoreQuery.html" title="class in org.apache.lucene.search">ConstantScoreQuery</A>, <A HREF="../../../../org/apache/lucene/search/ConstantScoreRangeQuery.html" title="class in org.apache.lucene.search">ConstantScoreRangeQuery</A>, <A HREF="../../../../org/apache/lucene/search/DisjunctionMaxQuery.html" title="class in org.apache.lucene.search">DisjunctionMaxQuery</A>, <A HREF="../../../../org/apache/lucene/search/FilteredQuery.html" title="class in org.apache.lucene.search">FilteredQuery</A>, <A HREF="../../../../org/apache/lucene/search/MatchAllDocsQuery.html" title="class in org.apache.lucene.search">MatchAllDocsQuery</A>, <A HREF="../../../../org/apache/lucene/search/MultiPhraseQuery.html" title="class in org.apache.lucene.search">MultiPhraseQuery</A>, <A HREF="../../../../org/apache/lucene/search/MultiTermQuery.html" title="class in org.apache.lucene.search">MultiTermQuery</A>, <A HREF="../../../../org/apache/lucene/search/PhraseQuery.html" title="class in org.apache.lucene.search">PhraseQuery</A>, <A HREF="../../../../org/apache/lucene/search/PrefixQuery.html" title="class in org.apache.lucene.search">PrefixQuery</A>, <A HREF="../../../../org/apache/lucene/search/RangeQuery.html" title="class in org.apache.lucene.search">RangeQuery</A>, <A HREF="../../../../org/apache/lucene/search/spans/SpanQuery.html" title="class in org.apache.lucene.search.spans">SpanQuery</A>, <A HREF="../../../../org/apache/lucene/search/TermQuery.html" title="class in org.apache.lucene.search">TermQuery</A></DD>
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<DT>public abstract class <B>Query</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><DT>implements <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/io/Serializable.html" title="class or interface in java.io">Serializable</A>, <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Cloneable.html" title="class or interface in java.lang">Cloneable</A></DL>
<P>
The abstract base class for queries. <p>Instantiable subclasses are: <ul> <li> <A HREF="../../../../org/apache/lucene/search/TermQuery.html" title="class in org.apache.lucene.search"><CODE>TermQuery</CODE></A> <li> <A HREF="../../../../org/apache/lucene/search/MultiTermQuery.html" title="class in org.apache.lucene.search"><CODE>MultiTermQuery</CODE></A> <li> <A HREF="../../../../org/apache/lucene/search/BooleanQuery.html" title="class in org.apache.lucene.search"><CODE>BooleanQuery</CODE></A> <li> <A HREF="../../../../org/apache/lucene/search/WildcardQuery.html" title="class in org.apache.lucene.search"><CODE>WildcardQuery</CODE></A> <li> <A HREF="../../../../org/apache/lucene/search/PhraseQuery.html" title="class in org.apache.lucene.search"><CODE>PhraseQuery</CODE></A> <li> <A HREF="../../../../org/apache/lucene/search/PrefixQuery.html" title="class in org.apache.lucene.search"><CODE>PrefixQuery</CODE></A> <li> <A HREF="../../../../org/apache/lucene/search/MultiPhraseQuery.html" title="class in org.apache.lucene.search"><CODE>MultiPhraseQuery</CODE></A> <li> <A HREF="../../../../org/apache/lucene/search/FuzzyQuery.html" title="class in org.apache.lucene.search"><CODE>FuzzyQuery</CODE></A> <li> <A HREF="../../../../org/apache/lucene/search/RangeQuery.html" title="class in org.apache.lucene.search"><CODE>RangeQuery</CODE></A> <li> <A HREF="../../../../org/apache/lucene/search/spans/SpanQuery.html" title="class in org.apache.lucene.search.spans"><CODE>SpanQuery</CODE></A> </ul> <p>A parser for queries is contained in: <ul> <li><A HREF="../../../../org/apache/lucene/queryParser/QueryParser.html" title="class in org.apache.lucene.queryParser"><CODE>QueryParser</CODE></A> </ul>
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<P>
<DL>
<DT><B>See Also:</B><DD><A HREF="../../../../serialized-form.html#org.apache.lucene.search.Query">Serialized Form</A></DL>
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<P>
<!-- ======== NESTED CLASS SUMMARY ======== -->
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<TD><CODE><B><A HREF="../../../../org/apache/lucene/search/Query.html#Query()">Query</A></B>()</CODE>
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<CODE> <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/apache/lucene/search/Query.html#clone()">clone</A></B>()</CODE>
<BR>
Returns a clone of this query.</TD>
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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> <A HREF="../../../../org/apache/lucene/search/Query.html" title="class in org.apache.lucene.search">Query</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/apache/lucene/search/Query.html#combine(org.apache.lucene.search.Query[])">combine</A></B>(<A HREF="../../../../org/apache/lucene/search/Query.html" title="class in org.apache.lucene.search">Query</A>[] queries)</CODE>
<BR>
Expert: called when re-writing queries under MultiSearcher.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>protected <A HREF="../../../../org/apache/lucene/search/Weight.html" title="interface in org.apache.lucene.search">Weight</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/apache/lucene/search/Query.html#createWeight(org.apache.lucene.search.Searcher)">createWeight</A></B>(<A HREF="../../../../org/apache/lucene/search/Searcher.html" title="class in org.apache.lucene.search">Searcher</A> searcher)</CODE>
<BR>
Expert: Constructs an appropriate Weight implementation for this query.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/apache/lucene/search/Query.html#extractTerms(java.util.Set)">extractTerms</A></B>(<A HREF="http://java.sun.com/j2se/1.4/docs/api/java/util/Set.html" title="class or interface in java.util">Set</A> terms)</CODE>
<BR>
Expert: adds all terms occuring in this query to the terms set.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> float</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/apache/lucene/search/Query.html#getBoost()">getBoost</A></B>()</CODE>
<BR>
Gets the boost for this clause.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> <A HREF="../../../../org/apache/lucene/search/Similarity.html" title="class in org.apache.lucene.search">Similarity</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/apache/lucene/search/Query.html#getSimilarity(org.apache.lucene.search.Searcher)">getSimilarity</A></B>(<A HREF="../../../../org/apache/lucene/search/Searcher.html" title="class in org.apache.lucene.search">Searcher</A> searcher)</CODE>
<BR>
Expert: Returns the Similarity implementation to be used for this query.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>static <A HREF="../../../../org/apache/lucene/search/Query.html" title="class in org.apache.lucene.search">Query</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/apache/lucene/search/Query.html#mergeBooleanQueries(org.apache.lucene.search.Query[])">mergeBooleanQueries</A></B>(<A HREF="../../../../org/apache/lucene/search/Query.html" title="class in org.apache.lucene.search">Query</A>[] queries)</CODE>
<BR>
Expert: merges the clauses of a set of BooleanQuery's into a single BooleanQuery.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> <A HREF="../../../../org/apache/lucene/search/Query.html" title="class in org.apache.lucene.search">Query</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/apache/lucene/search/Query.html#rewrite(org.apache.lucene.index.IndexReader)">rewrite</A></B>(<A HREF="../../../../org/apache/lucene/index/IndexReader.html" title="class in org.apache.lucene.index">IndexReader</A> reader)</CODE>
<BR>
Expert: called to re-write queries into primitive queries.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/apache/lucene/search/Query.html#setBoost(float)">setBoost</A></B>(float b)</CODE>
<BR>
Sets the boost for this query clause to <code>b</code>.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> <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/search/Query.html#toString()">toString</A></B>()</CODE>
<BR>
Prints a query to a string.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>abstract <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/search/Query.html#toString(java.lang.String)">toString</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>
<BR>
Prints a query to a string, with <code>field</code> assumed to be the default field and omitted.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> <A HREF="../../../../org/apache/lucene/search/Weight.html" title="interface in org.apache.lucene.search">Weight</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/apache/lucene/search/Query.html#weight(org.apache.lucene.search.Searcher)">weight</A></B>(<A HREF="../../../../org/apache/lucene/search/Searcher.html" title="class in org.apache.lucene.search">Searcher</A> searcher)</CODE>
<BR>
Expert: Constructs and initializes a Weight for a top-level query.</TD>
</TR>
</TABLE>
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<TD><B>Methods inherited from class java.lang.<A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A></B></TD>
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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html#equals(java.lang.Object)" title="class or interface in java.lang">equals</A>, <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html#finalize()" title="class or interface in java.lang">finalize</A>, <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html#getClass()" title="class or interface in java.lang">getClass</A>, <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html#hashCode()" title="class or interface in java.lang">hashCode</A>, <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html#notify()" title="class or interface in java.lang">notify</A>, <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html#notifyAll()" title="class or interface in java.lang">notifyAll</A>, <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html#wait()" title="class or interface in java.lang">wait</A>, <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html#wait(long)" title="class or interface in java.lang">wait</A>, <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html#wait(long, int)" title="class or interface in java.lang">wait</A></CODE></TD>
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<A NAME="Query()"><!-- --></A><H3>
Query</H3>
<PRE>
public <B>Query</B>()</PRE>
<DL>
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<A NAME="setBoost(float)"><!-- --></A><H3>
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