precedencequeryparser.html
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PrecedenceQueryParser (Lucene 2.1.0 API)
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org.apache.lucene.queryParser.precedence</FONT>
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Class PrecedenceQueryParser</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.queryParser.precedence.PrecedenceQueryParser</B>
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<DT><B>All Implemented Interfaces:</B> <DD><A HREF="../../../../../org/apache/lucene/queryParser/precedence/PrecedenceQueryParserConstants.html" title="interface in org.apache.lucene.queryParser.precedence">PrecedenceQueryParserConstants</A></DD>
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<DT>public class <B>PrecedenceQueryParser</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="../../../../../org/apache/lucene/queryParser/precedence/PrecedenceQueryParserConstants.html" title="interface in org.apache.lucene.queryParser.precedence">PrecedenceQueryParserConstants</A></DL>
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Experimental query parser variant designed to handle operator precedence in a more sensible fashion than QueryParser. There are still some open issues with this parser. This class is generated by JavaCC. The only method that clients should need to call is <A HREF="../../../../../org/apache/lucene/queryParser/precedence/PrecedenceQueryParser.html#parse(java.lang.String)"><CODE>parse(String)</CODE></A>. The syntax for query strings is as follows: A Query is a series of clauses. A clause may be prefixed by: <ul> <li> a plus (<code>+</code>) or a minus (<code>-</code>) sign, indicating that the clause is required or prohibited respectively; or <li> a term followed by a colon, indicating the field to be searched. This enables one to construct queries which search multiple fields. </ul> A clause may be either: <ul> <li> a term, indicating all the documents that contain this term; or <li> a nested query, enclosed in parentheses. Note that this may be used with a <code>+</code>/<code>-</code> prefix to require any of a set of terms. </ul> Thus, in BNF, the query grammar is: <pre> Query ::= ( Clause )* Clause ::= ["+", "-"] [<TERM> ":"] ( <TERM> | "(" Query ")" ) </pre> <p> Examples of appropriately formatted queries can be found in the <a href="http://jakarta.apache.org/lucene/docs/queryparsersyntax.html">query syntax documentation</a>. </p>
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<DT><B>Author:</B></DT> <DD>Brian Goetz, Peter Halacsy, Tatu Saloranta</DD></DL>
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<CODE>static org.apache.lucene.queryParser.precedence.PrecedenceQueryParser.Operator</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../org/apache/lucene/queryParser/precedence/PrecedenceQueryParser.html#AND_OPERATOR">AND_OPERATOR</A></B></CODE>
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<CODE> <A HREF="../../../../../org/apache/lucene/queryParser/precedence/Token.html" title="class in org.apache.lucene.queryParser.precedence">Token</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../org/apache/lucene/queryParser/precedence/PrecedenceQueryParser.html#jj_nt">jj_nt</A></B></CODE>
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<CODE> boolean</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../org/apache/lucene/queryParser/precedence/PrecedenceQueryParser.html#lookingAhead">lookingAhead</A></B></CODE>
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<CODE>static org.apache.lucene.queryParser.precedence.PrecedenceQueryParser.Operator</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../org/apache/lucene/queryParser/precedence/PrecedenceQueryParser.html#OR_OPERATOR">OR_OPERATOR</A></B></CODE>
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<CODE> <A HREF="../../../../../org/apache/lucene/queryParser/precedence/Token.html" title="class in org.apache.lucene.queryParser.precedence">Token</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../org/apache/lucene/queryParser/precedence/PrecedenceQueryParser.html#token">token</A></B></CODE>
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<CODE> <A HREF="../../../../../org/apache/lucene/queryParser/precedence/PrecedenceQueryParserTokenManager.html" title="class in org.apache.lucene.queryParser.precedence">PrecedenceQueryParserTokenManager</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../org/apache/lucene/queryParser/precedence/PrecedenceQueryParser.html#token_source">token_source</A></B></CODE>
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<TD><B>Fields inherited from interface org.apache.lucene.queryParser.precedence.<A HREF="../../../../../org/apache/lucene/queryParser/precedence/PrecedenceQueryParserConstants.html" title="interface in org.apache.lucene.queryParser.precedence">PrecedenceQueryParserConstants</A></B></TD>
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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><A HREF="../../../../../org/apache/lucene/queryParser/precedence/PrecedenceQueryParserConstants.html#_ESCAPED_CHAR">_ESCAPED_CHAR</A>, <A HREF="../../../../../org/apache/lucene/queryParser/precedence/PrecedenceQueryParserConstants.html#_NUM_CHAR">_NUM_CHAR</A>, <A HREF="../../../../../org/apache/lucene/queryParser/precedence/PrecedenceQueryParserConstants.html#_TERM_CHAR">_TERM_CHAR</A>, <A HREF="../../../../../org/apache/lucene/queryParser/precedence/PrecedenceQueryParserConstants.html#_TERM_START_CHAR">_TERM_START_CHAR</A>, <A HREF="../../../../../org/apache/lucene/queryParser/precedence/PrecedenceQueryParserConstants.html#_WHITESPACE">_WHITESPACE</A>, <A HREF="../../../../../org/apache/lucene/queryParser/precedence/PrecedenceQueryParserConstants.html#AND">AND</A>, <A HREF="../../../../../org/apache/lucene/queryParser/precedence/PrecedenceQueryParserConstants.html#Boost">Boost</A>, <A HREF="../../../../../org/apache/lucene/queryParser/precedence/PrecedenceQueryParserConstants.html#CARAT">CARAT</A>, <A HREF="../../../../../org/apache/lucene/queryParser/precedence/PrecedenceQueryParserConstants.html#COLON">COLON</A>, <A HREF="../../../../../org/apache/lucene/queryParser/precedence/PrecedenceQueryParserConstants.html#DEFAULT">DEFAULT</A>, <A HREF="../../../../../org/apache/lucene/queryParser/precedence/PrecedenceQueryParserConstants.html#EOF">EOF</A>, <A HREF="../../../../../org/apache/lucene/queryParser/precedence/PrecedenceQueryParserConstants.html#FUZZY_SLOP">FUZZY_SLOP</A>, <A HREF="../../../../../org/apache/lucene/queryParser/precedence/PrecedenceQueryParserConstants.html#LPAREN">LPAREN</A>, <A HREF="../../../../../org/apache/lucene/queryParser/precedence/PrecedenceQueryParserConstants.html#MINUS">MINUS</A>, <A HREF="../../../../../org/apache/lucene/queryParser/precedence/PrecedenceQueryParserConstants.html#NOT">NOT</A>, <A HREF="../../../../../org/apache/lucene/queryParser/precedence/PrecedenceQueryParserConstants.html#NUMBER">NUMBER</A>, <A HREF="../../../../../org/apache/lucene/queryParser/precedence/PrecedenceQueryParserConstants.html#OR">OR</A>, <A HREF="../../../../../org/apache/lucene/queryParser/precedence/PrecedenceQueryParserConstants.html#PLUS">PLUS</A>, <A HREF="../../../../../org/apache/lucene/queryParser/precedence/PrecedenceQueryParserConstants.html#PREFIXTERM">PREFIXTERM</A>, <A HREF="../../../../../org/apache/lucene/queryParser/precedence/PrecedenceQueryParserConstants.html#QUOTED">QUOTED</A>, <A HREF="../../../../../org/apache/lucene/queryParser/precedence/PrecedenceQueryParserConstants.html#RangeEx">RangeEx</A>, <A HREF="../../../../../org/apache/lucene/queryParser/precedence/PrecedenceQueryParserConstants.html#RANGEEX_END">RANGEEX_END</A>, <A HREF="../../../../../org/apache/lucene/queryParser/precedence/PrecedenceQueryParserConstants.html#RANGEEX_GOOP">RANGEEX_GOOP</A>, <A HREF="../../../../../org/apache/lucene/queryParser/precedence/PrecedenceQueryParserConstants.html#RANGEEX_QUOTED">RANGEEX_QUOTED</A>, <A HREF="../../../../../org/apache/lucene/queryParser/precedence/PrecedenceQueryParserConstants.html#RANGEEX_START">RANGEEX_START</A>, <A HREF="../../../../../org/apache/lucene/queryParser/precedence/PrecedenceQueryParserConstants.html#RANGEEX_TO">RANGEEX_TO</A>, <A HREF="../../../../../org/apache/lucene/queryParser/precedence/PrecedenceQueryParserConstants.html#RangeIn">RangeIn</A>, <A HREF="../../../../../org/apache/lucene/queryParser/precedence/PrecedenceQueryParserConstants.html#RANGEIN_END">RANGEIN_END</A>, <A HREF="../../../../../org/apache/lucene/queryParser/precedence/PrecedenceQueryParserConstants.html#RANGEIN_GOOP">RANGEIN_GOOP</A>, <A HREF="../../../../../org/apache/lucene/queryParser/precedence/PrecedenceQueryParserConstants.html#RANGEIN_QUOTED">RANGEIN_QUOTED</A>, <A HREF="../../../../../org/apache/lucene/queryParser/precedence/PrecedenceQueryParserConstants.html#RANGEIN_START">RANGEIN_START</A>, <A HREF="../../../../../org/apache/lucene/queryParser/precedence/PrecedenceQueryParserConstants.html#RANGEIN_TO">RANGEIN_TO</A>, <A HREF="../../../../../org/apache/lucene/queryParser/precedence/PrecedenceQueryParserConstants.html#RPAREN">RPAREN</A>, <A HREF="../../../../../org/apache/lucene/queryParser/precedence/PrecedenceQueryParserConstants.html#TERM">TERM</A>, <A HREF="../../../../../org/apache/lucene/queryParser/precedence/PrecedenceQueryParserConstants.html#tokenImage">tokenImage</A>, <A HREF="../../../../../org/apache/lucene/queryParser/precedence/PrecedenceQueryParserConstants.html#WILDTERM">WILDTERM</A></CODE></TD>
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<TD><CODE><B><A HREF="../../../../../org/apache/lucene/queryParser/precedence/PrecedenceQueryParser.html#PrecedenceQueryParser(org.apache.lucene.queryParser.precedence.CharStream)">PrecedenceQueryParser</A></B>(<A HREF="../../../../../org/apache/lucene/queryParser/precedence/CharStream.html" title="interface in org.apache.lucene.queryParser.precedence">CharStream</A> stream)</CODE>
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<TD><CODE><B><A HREF="../../../../../org/apache/lucene/queryParser/precedence/PrecedenceQueryParser.html#PrecedenceQueryParser(org.apache.lucene.queryParser.precedence.PrecedenceQueryParserTokenManager)">PrecedenceQueryParser</A></B>(<A HREF="../../../../../org/apache/lucene/queryParser/precedence/PrecedenceQueryParserTokenManager.html" title="class in org.apache.lucene.queryParser.precedence">PrecedenceQueryParserTokenManager</A> tm)</CODE>
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