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| Apache Lucene.NET 4.8.0-beta00013 Documentation </title>
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<article class="content wrap" id="_content" data-uid="Lucene.Net.QueryParsers.Classic.QueryParser">
<h1 id="Lucene_Net_QueryParsers_Classic_QueryParser" data-uid="Lucene.Net.QueryParsers.Classic.QueryParser" class="text-break">Class QueryParser
</h1>
<div class="markdown level0 summary"><p>This class is generated by JavaCC. The most important method is
<a class="xref" href="Lucene.Net.QueryParsers.Classic.QueryParserBase.html#Lucene_Net_QueryParsers_Classic_QueryParserBase_Parse_System_String_">Parse(String)</a>.
<p>
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><li> a term followed by a colon, indicating the field to be searched.
This enables one to construct queries which search multiple fields.</li></ul></p>
<p>
A clause may be either:
<ul><li> a term, indicating all the documents that contain this term; or</li><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.</li></ul>
<p>
Thus, in BNF, the query grammar is:
<pre><code> Query ::= ( Clause )*
Clause ::= [&quot;+&quot;, &quot;-&quot;] [&lt;TERM> &quot;:&quot;] ( &lt;TERM> | &quot;(&quot; Query &quot;)&quot; )</code></pre>
<p>
Examples of appropriately formatted queries can be found in the <a href="../../../../../../queryparsersyntax.html">query syntax
documentation</a>.
</p>
<p>
In <a class="xref" href="https://lucenenet.apache.org/docs/4.8.0-beta00013/api/core/Lucene.Net.Search.TermRangeQuery.html">TermRangeQuery</a>s, QueryParser tries to detect date values, e.g.
<tt>date:[6/1/2005 TO 6/4/2005]</tt> produces a range query that searches
for &quot;date&quot; fields between 2005-06-01 and 2005-06-04. Note that the format
of the accepted input depends on the <span class="xref">System.Globalization.CultureInfo</span>.
A <span class="xref">Lucene.Net.Documents.DateTools.Resolution</span> has to be set,
if you want to use <a class="xref" href="https://lucenenet.apache.org/docs/4.8.0-beta00013/api/core/Lucene.Net.Documents.DateTools.html">DateTools</a> for date conversion.<p>
</p>
<p>
The date resolution that shall be used for RangeQueries can be set
using <a class="xref" href="Lucene.Net.QueryParsers.Classic.QueryParserBase.html#Lucene_Net_QueryParsers_Classic_QueryParserBase_SetDateResolution_Lucene_Net_Documents_DateTools_Resolution_">SetDateResolution(DateTools.Resolution)</a>
or <a class="xref" href="Lucene.Net.QueryParsers.Classic.QueryParserBase.html#Lucene_Net_QueryParsers_Classic_QueryParserBase_SetDateResolution_System_String_Lucene_Net_Documents_DateTools_Resolution_">SetDateResolution(String, DateTools.Resolution)</a>. The former
sets the default date resolution for all fields, whereas the latter can
be used to set field specific date resolutions. Field specific date
resolutions take, if set, precedence over the default date resolution.
</p>
<p>
If you don&apos;t use <a class="xref" href="https://lucenenet.apache.org/docs/4.8.0-beta00013/api/core/Lucene.Net.Documents.DateTools.html">DateTools</a> in your index, you can create your own
query parser that inherits <a class="xref" href="Lucene.Net.QueryParsers.Classic.QueryParser.html">QueryParser</a> and overwrites
<a class="xref" href="Lucene.Net.QueryParsers.Classic.QueryParserBase.html#Lucene_Net_QueryParsers_Classic_QueryParserBase_GetRangeQuery_System_String_System_String_System_String_System_Boolean_System_Boolean_">GetRangeQuery(String, String, String, Boolean, Boolean)</a> to
use a different method for date conversion.
</p>
<p>Note that <a class="xref" href="Lucene.Net.QueryParsers.Classic.QueryParser.html">QueryParser</a> is <em>not</em> thread-safe.</p>
<p><strong>NOTE</strong>: there is a new QueryParser in contrib, which matches
the same syntax as this class, but is more modular,
enabling substantial customization to how a query is created.
</p>
<p><strong>NOTE</strong>: You must specify the required <span class="xref">Lucene.Net.Util.LuceneVersion</span> compatibility when
creating QueryParser:
<ul><li>As of 3.1, <a class="xref" href="Lucene.Net.QueryParsers.Classic.QueryParserBase.html#Lucene_Net_QueryParsers_Classic_QueryParserBase_AutoGeneratePhraseQueries">AutoGeneratePhraseQueries</a> is false by default.</li></ul></p>
</div>
<div class="markdown level0 conceptual"></div>
<div class="inheritance">
<h5>Inheritance</h5>
<div class="level0"><span class="xref">System.Object</span></div>
<div class="level1"><span class="xref">Lucene.Net.Util.QueryBuilder</span></div>
<div class="level2"><a class="xref" href="Lucene.Net.QueryParsers.Classic.QueryParserBase.html">QueryParserBase</a></div>
<div class="level3"><span class="xref">QueryParser</span></div>
<div class="level4"><a class="xref" href="Lucene.Net.QueryParsers.Analyzing.AnalyzingQueryParser.html">AnalyzingQueryParser</a></div>
<div class="level4"><a class="xref" href="Lucene.Net.QueryParsers.Classic.MultiFieldQueryParser.html">MultiFieldQueryParser</a></div>
<div class="level4"><a class="xref" href="Lucene.Net.QueryParsers.ComplexPhrase.ComplexPhraseQueryParser.html">ComplexPhraseQueryParser</a></div>
<div class="level4"><a class="xref" href="Lucene.Net.QueryParsers.Ext.ExtendableQueryParser.html">ExtendableQueryParser</a></div>
</div>
<div classs="implements">
<h5>Implements</h5>
<div><a class="xref" href="Lucene.Net.QueryParsers.Flexible.Standard.ICommonQueryParserConfiguration.html">ICommonQueryParserConfiguration</a></div>
</div>
<div class="inheritedMembers">
<h5>Inherited Members</h5>
<div>
<a class="xref" href="Lucene.Net.QueryParsers.Classic.QueryParserBase.html#Lucene_Net_QueryParsers_Classic_QueryParserBase_CONJ_NONE">QueryParserBase.CONJ_NONE</a>
</div>
<div>
<a class="xref" href="Lucene.Net.QueryParsers.Classic.QueryParserBase.html#Lucene_Net_QueryParsers_Classic_QueryParserBase_CONJ_AND">QueryParserBase.CONJ_AND</a>
</div>
<div>
<a class="xref" href="Lucene.Net.QueryParsers.Classic.QueryParserBase.html#Lucene_Net_QueryParsers_Classic_QueryParserBase_CONJ_OR">QueryParserBase.CONJ_OR</a>
</div>
<div>
<a class="xref" href="Lucene.Net.QueryParsers.Classic.QueryParserBase.html#Lucene_Net_QueryParsers_Classic_QueryParserBase_MOD_NONE">QueryParserBase.MOD_NONE</a>
</div>
<div>
<a class="xref" href="Lucene.Net.QueryParsers.Classic.QueryParserBase.html#Lucene_Net_QueryParsers_Classic_QueryParserBase_MOD_NOT">QueryParserBase.MOD_NOT</a>
</div>
<div>
<a class="xref" href="Lucene.Net.QueryParsers.Classic.QueryParserBase.html#Lucene_Net_QueryParsers_Classic_QueryParserBase_MOD_REQ">QueryParserBase.MOD_REQ</a>
</div>
<div>
<a class="xref" href="Lucene.Net.QueryParsers.Classic.QueryParserBase.html#Lucene_Net_QueryParsers_Classic_QueryParserBase_AND_OPERATOR">QueryParserBase.AND_OPERATOR</a>
</div>
<div>
<a class="xref" href="Lucene.Net.QueryParsers.Classic.QueryParserBase.html#Lucene_Net_QueryParsers_Classic_QueryParserBase_OR_OPERATOR">QueryParserBase.OR_OPERATOR</a>
</div>
<div>
<a class="xref" href="Lucene.Net.QueryParsers.Classic.QueryParserBase.html#Lucene_Net_QueryParsers_Classic_QueryParserBase_m_field">QueryParserBase.m_field</a>
</div>
<div>
<a class="xref" href="Lucene.Net.QueryParsers.Classic.QueryParserBase.html#Lucene_Net_QueryParsers_Classic_QueryParserBase_Init_Lucene_Net_Util_LuceneVersion_System_String_Lucene_Net_Analysis_Analyzer_">QueryParserBase.Init(LuceneVersion, String, Analyzer)</a>
</div>
<div>
<a class="xref" href="Lucene.Net.QueryParsers.Classic.QueryParserBase.html#Lucene_Net_QueryParsers_Classic_QueryParserBase_Parse_System_String_">QueryParserBase.Parse(String)</a>
</div>
<div>
<a class="xref" href="Lucene.Net.QueryParsers.Classic.QueryParserBase.html#Lucene_Net_QueryParsers_Classic_QueryParserBase_Field">QueryParserBase.Field</a>
</div>
<div>
<a class="xref" href="Lucene.Net.QueryParsers.Classic.QueryParserBase.html#Lucene_Net_QueryParsers_Classic_QueryParserBase_AutoGeneratePhraseQueries">QueryParserBase.AutoGeneratePhraseQueries</a>
</div>
<div>
<a class="xref" href="Lucene.Net.QueryParsers.Classic.QueryParserBase.html#Lucene_Net_QueryParsers_Classic_QueryParserBase_FuzzyMinSim">QueryParserBase.FuzzyMinSim</a>
</div>
<div>
<a class="xref" href="Lucene.Net.QueryParsers.Classic.QueryParserBase.html#Lucene_Net_QueryParsers_Classic_QueryParserBase_FuzzyPrefixLength">QueryParserBase.FuzzyPrefixLength</a>
</div>
<div>
<a class="xref" href="Lucene.Net.QueryParsers.Classic.QueryParserBase.html#Lucene_Net_QueryParsers_Classic_QueryParserBase_PhraseSlop">QueryParserBase.PhraseSlop</a>
</div>
<div>
<a class="xref" href="Lucene.Net.QueryParsers.Classic.QueryParserBase.html#Lucene_Net_QueryParsers_Classic_QueryParserBase_AllowLeadingWildcard">QueryParserBase.AllowLeadingWildcard</a>
</div>
<div>
<a class="xref" href="Lucene.Net.QueryParsers.Classic.QueryParserBase.html#Lucene_Net_QueryParsers_Classic_QueryParserBase_DefaultOperator">QueryParserBase.DefaultOperator</a>
</div>
<div>
<a class="xref" href="Lucene.Net.QueryParsers.Classic.QueryParserBase.html#Lucene_Net_QueryParsers_Classic_QueryParserBase_LowercaseExpandedTerms">QueryParserBase.LowercaseExpandedTerms</a>
</div>
<div>
<a class="xref" href="Lucene.Net.QueryParsers.Classic.QueryParserBase.html#Lucene_Net_QueryParsers_Classic_QueryParserBase_MultiTermRewriteMethod">QueryParserBase.MultiTermRewriteMethod</a>
</div>
<div>
<a class="xref" href="Lucene.Net.QueryParsers.Classic.QueryParserBase.html#Lucene_Net_QueryParsers_Classic_QueryParserBase_Locale">QueryParserBase.Locale</a>
</div>
<div>
<a class="xref" href="Lucene.Net.QueryParsers.Classic.QueryParserBase.html#Lucene_Net_QueryParsers_Classic_QueryParserBase_TimeZone">QueryParserBase.TimeZone</a>
</div>
<div>
<a class="xref" href="Lucene.Net.QueryParsers.Classic.QueryParserBase.html#Lucene_Net_QueryParsers_Classic_QueryParserBase_SetDateResolution_Lucene_Net_Documents_DateTools_Resolution_">QueryParserBase.SetDateResolution(DateTools.Resolution)</a>
</div>
<div>
<a class="xref" href="Lucene.Net.QueryParsers.Classic.QueryParserBase.html#Lucene_Net_QueryParsers_Classic_QueryParserBase_SetDateResolution_System_String_Lucene_Net_Documents_DateTools_Resolution_">QueryParserBase.SetDateResolution(String, DateTools.Resolution)</a>
</div>
<div>
<a class="xref" href="Lucene.Net.QueryParsers.Classic.QueryParserBase.html#Lucene_Net_QueryParsers_Classic_QueryParserBase_GetDateResolution_System_String_">QueryParserBase.GetDateResolution(String)</a>
</div>
<div>
<a class="xref" href="Lucene.Net.QueryParsers.Classic.QueryParserBase.html#Lucene_Net_QueryParsers_Classic_QueryParserBase_AnalyzeRangeTerms">QueryParserBase.AnalyzeRangeTerms</a>
</div>
<div>
<a class="xref" href="Lucene.Net.QueryParsers.Classic.QueryParserBase.html#Lucene_Net_QueryParsers_Classic_QueryParserBase_AddClause_System_Collections_Generic_IList_Lucene_Net_Search_BooleanClause__System_Int32_System_Int32_Lucene_Net_Search_Query_">QueryParserBase.AddClause(IList&lt;BooleanClause&gt;, Int32, Int32, Query)</a>
</div>
<div>
<a class="xref" href="Lucene.Net.QueryParsers.Classic.QueryParserBase.html#Lucene_Net_QueryParsers_Classic_QueryParserBase_GetFieldQuery_System_String_System_String_System_Boolean_">QueryParserBase.GetFieldQuery(String, String, Boolean)</a>
</div>
<div>
<a class="xref" href="Lucene.Net.QueryParsers.Classic.QueryParserBase.html#Lucene_Net_QueryParsers_Classic_QueryParserBase_NewFieldQuery_Lucene_Net_Analysis_Analyzer_System_String_System_String_System_Boolean_">QueryParserBase.NewFieldQuery(Analyzer, String, String, Boolean)</a>
</div>
<div>
<a class="xref" href="Lucene.Net.QueryParsers.Classic.QueryParserBase.html#Lucene_Net_QueryParsers_Classic_QueryParserBase_GetFieldQuery_System_String_System_String_System_Int32_">QueryParserBase.GetFieldQuery(String, String, Int32)</a>
</div>
<div>
<a class="xref" href="Lucene.Net.QueryParsers.Classic.QueryParserBase.html#Lucene_Net_QueryParsers_Classic_QueryParserBase_GetRangeQuery_System_String_System_String_System_String_System_Boolean_System_Boolean_">QueryParserBase.GetRangeQuery(String, String, String, Boolean, Boolean)</a>
</div>
<div>
<a class="xref" href="Lucene.Net.QueryParsers.Classic.QueryParserBase.html#Lucene_Net_QueryParsers_Classic_QueryParserBase_NewBooleanClause_Lucene_Net_Search_Query_Lucene_Net_Search_Occur_">QueryParserBase.NewBooleanClause(Query, Occur)</a>
</div>
<div>
<a class="xref" href="Lucene.Net.QueryParsers.Classic.QueryParserBase.html#Lucene_Net_QueryParsers_Classic_QueryParserBase_NewPrefixQuery_Lucene_Net_Index_Term_">QueryParserBase.NewPrefixQuery(Term)</a>
</div>
<div>
<a class="xref" href="Lucene.Net.QueryParsers.Classic.QueryParserBase.html#Lucene_Net_QueryParsers_Classic_QueryParserBase_NewRegexpQuery_Lucene_Net_Index_Term_">QueryParserBase.NewRegexpQuery(Term)</a>
</div>
<div>
<a class="xref" href="Lucene.Net.QueryParsers.Classic.QueryParserBase.html#Lucene_Net_QueryParsers_Classic_QueryParserBase_NewFuzzyQuery_Lucene_Net_Index_Term_System_Single_System_Int32_">QueryParserBase.NewFuzzyQuery(Term, Single, Int32)</a>
</div>
<div>
<a class="xref" href="Lucene.Net.QueryParsers.Classic.QueryParserBase.html#Lucene_Net_QueryParsers_Classic_QueryParserBase_AnalyzeMultitermTerm_System_String_System_String_Lucene_Net_Analysis_Analyzer_">QueryParserBase.AnalyzeMultitermTerm(String, String, Analyzer)</a>
</div>
<div>
<a class="xref" href="Lucene.Net.QueryParsers.Classic.QueryParserBase.html#Lucene_Net_QueryParsers_Classic_QueryParserBase_NewRangeQuery_System_String_System_String_System_String_System_Boolean_System_Boolean_">QueryParserBase.NewRangeQuery(String, String, String, Boolean, Boolean)</a>
</div>
<div>
<a class="xref" href="Lucene.Net.QueryParsers.Classic.QueryParserBase.html#Lucene_Net_QueryParsers_Classic_QueryParserBase_NewMatchAllDocsQuery">QueryParserBase.NewMatchAllDocsQuery()</a>
</div>
<div>
<a class="xref" href="Lucene.Net.QueryParsers.Classic.QueryParserBase.html#Lucene_Net_QueryParsers_Classic_QueryParserBase_NewWildcardQuery_Lucene_Net_Index_Term_">QueryParserBase.NewWildcardQuery(Term)</a>
</div>
<div>
<a class="xref" href="Lucene.Net.QueryParsers.Classic.QueryParserBase.html#Lucene_Net_QueryParsers_Classic_QueryParserBase_GetBooleanQuery_System_Collections_Generic_IList_Lucene_Net_Search_BooleanClause__">QueryParserBase.GetBooleanQuery(IList&lt;BooleanClause&gt;)</a>
</div>
<div>
<a class="xref" href="Lucene.Net.QueryParsers.Classic.QueryParserBase.html#Lucene_Net_QueryParsers_Classic_QueryParserBase_GetBooleanQuery_System_Collections_Generic_IList_Lucene_Net_Search_BooleanClause__System_Boolean_">QueryParserBase.GetBooleanQuery(IList&lt;BooleanClause&gt;, Boolean)</a>
</div>
<div>
<a class="xref" href="Lucene.Net.QueryParsers.Classic.QueryParserBase.html#Lucene_Net_QueryParsers_Classic_QueryParserBase_GetWildcardQuery_System_String_System_String_">QueryParserBase.GetWildcardQuery(String, String)</a>
</div>
<div>
<a class="xref" href="Lucene.Net.QueryParsers.Classic.QueryParserBase.html#Lucene_Net_QueryParsers_Classic_QueryParserBase_GetRegexpQuery_System_String_System_String_">QueryParserBase.GetRegexpQuery(String, String)</a>
</div>
<div>
<a class="xref" href="Lucene.Net.QueryParsers.Classic.QueryParserBase.html#Lucene_Net_QueryParsers_Classic_QueryParserBase_GetPrefixQuery_System_String_System_String_">QueryParserBase.GetPrefixQuery(String, String)</a>
</div>
<div>
<a class="xref" href="Lucene.Net.QueryParsers.Classic.QueryParserBase.html#Lucene_Net_QueryParsers_Classic_QueryParserBase_GetFuzzyQuery_System_String_System_String_System_Single_">QueryParserBase.GetFuzzyQuery(String, String, Single)</a>
</div>
<div>
<a class="xref" href="Lucene.Net.QueryParsers.Classic.QueryParserBase.html#Lucene_Net_QueryParsers_Classic_QueryParserBase_Escape_System_String_">QueryParserBase.Escape(String)</a>
</div>
<div>
<a class="xref" href="https://lucenenet.apache.org/docs/4.8.0-beta00013/api/core/Lucene.Net.Util.QueryBuilder.html#Lucene_Net_Util_QueryBuilder_CreateBooleanQuery_System_String_System_String_">QueryBuilder.CreateBooleanQuery(String, String)</a>
</div>
<div>
<a class="xref" href="https://lucenenet.apache.org/docs/4.8.0-beta00013/api/core/Lucene.Net.Util.QueryBuilder.html#Lucene_Net_Util_QueryBuilder_CreateBooleanQuery_System_String_System_String_Lucene_Net_Search_Occur_">QueryBuilder.CreateBooleanQuery(String, String, Occur)</a>
</div>
<div>
<a class="xref" href="https://lucenenet.apache.org/docs/4.8.0-beta00013/api/core/Lucene.Net.Util.QueryBuilder.html#Lucene_Net_Util_QueryBuilder_CreatePhraseQuery_System_String_System_String_">QueryBuilder.CreatePhraseQuery(String, String)</a>
</div>
<div>
<a class="xref" href="https://lucenenet.apache.org/docs/4.8.0-beta00013/api/core/Lucene.Net.Util.QueryBuilder.html#Lucene_Net_Util_QueryBuilder_CreatePhraseQuery_System_String_System_String_System_Int32_">QueryBuilder.CreatePhraseQuery(String, String, Int32)</a>
</div>
<div>
<a class="xref" href="https://lucenenet.apache.org/docs/4.8.0-beta00013/api/core/Lucene.Net.Util.QueryBuilder.html#Lucene_Net_Util_QueryBuilder_CreateMinShouldMatchQuery_System_String_System_String_System_Single_">QueryBuilder.CreateMinShouldMatchQuery(String, String, Single)</a>
</div>
<div>
<span class="xref">Lucene.Net.Util.QueryBuilder.Analyzer</span>
</div>
<div>
<span class="xref">Lucene.Net.Util.QueryBuilder.EnablePositionIncrements</span>
</div>
<div>
<a class="xref" href="https://lucenenet.apache.org/docs/4.8.0-beta00013/api/core/Lucene.Net.Util.QueryBuilder.html#Lucene_Net_Util_QueryBuilder_CreateFieldQuery_Lucene_Net_Analysis_Analyzer_Lucene_Net_Search_Occur_System_String_System_String_System_Boolean_System_Int32_">QueryBuilder.CreateFieldQuery(Analyzer, Occur, String, String, Boolean, Int32)</a>
</div>
<div>
<a class="xref" href="https://lucenenet.apache.org/docs/4.8.0-beta00013/api/core/Lucene.Net.Util.QueryBuilder.html#Lucene_Net_Util_QueryBuilder_NewBooleanQuery_System_Boolean_">QueryBuilder.NewBooleanQuery(Boolean)</a>
</div>
<div>
<span class="xref">Lucene.Net.Util.QueryBuilder.NewTermQuery(Lucene.Net.Index.Term)</span>
</div>
<div>
<span class="xref">Lucene.Net.Util.QueryBuilder.NewPhraseQuery()</span>
</div>
<div>
<span class="xref">Lucene.Net.Util.QueryBuilder.NewMultiPhraseQuery()</span>
</div>
<div>
<span class="xref">System.Object.Equals(System.Object)</span>
</div>
<div>
<span class="xref">System.Object.Equals(System.Object, System.Object)</span>
</div>
<div>
<span class="xref">System.Object.GetHashCode()</span>
</div>
<div>
<span class="xref">System.Object.GetType()</span>
</div>
<div>
<span class="xref">System.Object.MemberwiseClone()</span>
</div>
<div>
<span class="xref">System.Object.ReferenceEquals(System.Object, System.Object)</span>
</div>
<div>
<span class="xref">System.Object.ToString()</span>
</div>
</div>
<h6><strong>Namespace</strong>: <a class="xref" href="Lucene.Net.QueryParsers.Classic.html">Lucene.Net.QueryParsers.Classic</a></h6>
<h6><strong>Assembly</strong>: Lucene.Net.QueryParser.dll</h6>
<h5 id="Lucene_Net_QueryParsers_Classic_QueryParser_syntax">Syntax</h5>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">public class QueryParser : QueryParserBase, ICommonQueryParserConfiguration</code></pre>
</div>
<h3 id="constructors">Constructors
</h3>
<span class="small pull-right mobile-hide">
<span class="divider">|</span>
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<a id="Lucene_Net_QueryParsers_Classic_QueryParser__ctor_" data-uid="Lucene.Net.QueryParsers.Classic.QueryParser.#ctor*"></a>
<h4 id="Lucene_Net_QueryParsers_Classic_QueryParser__ctor_Lucene_Net_QueryParsers_Classic_ICharStream_" data-uid="Lucene.Net.QueryParsers.Classic.QueryParser.#ctor(Lucene.Net.QueryParsers.Classic.ICharStream)">QueryParser(ICharStream)</h4>
<div class="markdown level1 summary"><p>Constructor with user supplied <a class="xref" href="Lucene.Net.QueryParsers.Classic.ICharStream.html">ICharStream</a>. </p>
</div>
<div class="markdown level1 conceptual"></div>
<h5 class="decalaration">Declaration</h5>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">protected QueryParser(ICharStream stream)</code></pre>
</div>
<h5 class="parameters">Parameters</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Name</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><a class="xref" href="Lucene.Net.QueryParsers.Classic.ICharStream.html">ICharStream</a></td>
<td><span class="parametername">stream</span></td>
<td></td>
</tr>
</tbody>
</table>
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<a id="Lucene_Net_QueryParsers_Classic_QueryParser__ctor_" data-uid="Lucene.Net.QueryParsers.Classic.QueryParser.#ctor*"></a>
<h4 id="Lucene_Net_QueryParsers_Classic_QueryParser__ctor_Lucene_Net_QueryParsers_Classic_QueryParserTokenManager_" data-uid="Lucene.Net.QueryParsers.Classic.QueryParser.#ctor(Lucene.Net.QueryParsers.Classic.QueryParserTokenManager)">QueryParser(QueryParserTokenManager)</h4>
<div class="markdown level1 summary"><p>Constructor with generated Token Manager. </p>
</div>
<div class="markdown level1 conceptual"></div>
<h5 class="decalaration">Declaration</h5>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">protected QueryParser(QueryParserTokenManager tm)</code></pre>
</div>
<h5 class="parameters">Parameters</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Name</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><a class="xref" href="Lucene.Net.QueryParsers.Classic.QueryParserTokenManager.html">QueryParserTokenManager</a></td>
<td><span class="parametername">tm</span></td>
<td></td>
</tr>
</tbody>
</table>
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<a id="Lucene_Net_QueryParsers_Classic_QueryParser__ctor_" data-uid="Lucene.Net.QueryParsers.Classic.QueryParser.#ctor*"></a>
<h4 id="Lucene_Net_QueryParsers_Classic_QueryParser__ctor_Lucene_Net_Util_LuceneVersion_System_String_Lucene_Net_Analysis_Analyzer_" data-uid="Lucene.Net.QueryParsers.Classic.QueryParser.#ctor(Lucene.Net.Util.LuceneVersion,System.String,Lucene.Net.Analysis.Analyzer)">QueryParser(LuceneVersion, String, Analyzer)</h4>
<div class="markdown level1 summary"><p>Constructs a query parser.</p>
</div>
<div class="markdown level1 conceptual"></div>
<h5 class="decalaration">Declaration</h5>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">public QueryParser(LuceneVersion matchVersion, string f, Analyzer a)</code></pre>
</div>
<h5 class="parameters">Parameters</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Name</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><span class="xref">Lucene.Net.Util.LuceneVersion</span></td>
<td><span class="parametername">matchVersion</span></td>
<td><p>Lucene version to match.</p>
</td>
</tr>
<tr>
<td><span class="xref">System.String</span></td>
<td><span class="parametername">f</span></td>
<td><p>the default field for query terms.</p>
</td>
</tr>
<tr>
<td><span class="xref">Lucene.Net.Analysis.Analyzer</span></td>
<td><span class="parametername">a</span></td>
<td><p>used to find terms in the query text.</p>
</td>
</tr>
</tbody>
</table>
<h3 id="properties">Properties
</h3>
<span class="small pull-right mobile-hide">
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<a id="Lucene_Net_QueryParsers_Classic_QueryParser_Jj_nt_" data-uid="Lucene.Net.QueryParsers.Classic.QueryParser.Jj_nt*"></a>
<h4 id="Lucene_Net_QueryParsers_Classic_QueryParser_Jj_nt" data-uid="Lucene.Net.QueryParsers.Classic.QueryParser.Jj_nt">Jj_nt</h4>
<div class="markdown level1 summary"><p>Next token.</p>
</div>
<div class="markdown level1 conceptual"></div>
<h5 class="decalaration">Declaration</h5>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">public Token Jj_nt { get; set; }</code></pre>
</div>
<h5 class="propertyValue">Property Value</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><a class="xref" href="Lucene.Net.QueryParsers.Classic.Token.html">Token</a></td>
<td></td>
</tr>
</tbody>
</table>
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<a id="Lucene_Net_QueryParsers_Classic_QueryParser_Token_" data-uid="Lucene.Net.QueryParsers.Classic.QueryParser.Token*"></a>
<h4 id="Lucene_Net_QueryParsers_Classic_QueryParser_Token" data-uid="Lucene.Net.QueryParsers.Classic.QueryParser.Token">Token</h4>
<div class="markdown level1 summary"><p>Current token.</p>
</div>
<div class="markdown level1 conceptual"></div>
<h5 class="decalaration">Declaration</h5>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">public Token Token { get; set; }</code></pre>
</div>
<h5 class="propertyValue">Property Value</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><a class="xref" href="Lucene.Net.QueryParsers.Classic.Token.html">Token</a></td>
<td></td>
</tr>
</tbody>
</table>
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<a id="Lucene_Net_QueryParsers_Classic_QueryParser_TokenSource_" data-uid="Lucene.Net.QueryParsers.Classic.QueryParser.TokenSource*"></a>
<h4 id="Lucene_Net_QueryParsers_Classic_QueryParser_TokenSource" data-uid="Lucene.Net.QueryParsers.Classic.QueryParser.TokenSource">TokenSource</h4>
<div class="markdown level1 summary"><p>Generated Token Manager.</p>
</div>
<div class="markdown level1 conceptual"></div>
<h5 class="decalaration">Declaration</h5>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">public QueryParserTokenManager TokenSource { get; set; }</code></pre>
</div>
<h5 class="propertyValue">Property Value</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><a class="xref" href="Lucene.Net.QueryParsers.Classic.QueryParserTokenManager.html">QueryParserTokenManager</a></td>
<td></td>
</tr>
</tbody>
</table>
<h3 id="methods">Methods
</h3>
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<a href="https://github.com/apache/lucenenet/new/docs/4.8.0-beta00013/websites/apidocs/apiSpec/new?filename=Lucene_Net_QueryParsers_Classic_QueryParser_Clause_System_String_.md&amp;value=---%0Auid%3A%20Lucene.Net.QueryParsers.Classic.QueryParser.Clause(System.String)%0Asummary%3A%20'*You%20can%20override%20summary%20for%20the%20API%20here%20using%20*MARKDOWN*%20syntax'%0A---%0A%0A*Please%20type%20below%20more%20information%20about%20this%20API%3A*%0A%0A">Improve this Doc</a>
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<a id="Lucene_Net_QueryParsers_Classic_QueryParser_Clause_" data-uid="Lucene.Net.QueryParsers.Classic.QueryParser.Clause*"></a>
<h4 id="Lucene_Net_QueryParsers_Classic_QueryParser_Clause_System_String_" data-uid="Lucene.Net.QueryParsers.Classic.QueryParser.Clause(System.String)">Clause(String)</h4>
<div class="markdown level1 summary"></div>
<div class="markdown level1 conceptual"></div>
<h5 class="decalaration">Declaration</h5>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">public Query Clause(string field)</code></pre>
</div>
<h5 class="parameters">Parameters</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Name</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><span class="xref">System.String</span></td>
<td><span class="parametername">field</span></td>
<td></td>
</tr>
</tbody>
</table>
<h5 class="returns">Returns</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><span class="xref">Lucene.Net.Search.Query</span></td>
<td></td>
</tr>
</tbody>
</table>
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<a id="Lucene_Net_QueryParsers_Classic_QueryParser_Conjunction_" data-uid="Lucene.Net.QueryParsers.Classic.QueryParser.Conjunction*"></a>
<h4 id="Lucene_Net_QueryParsers_Classic_QueryParser_Conjunction" data-uid="Lucene.Net.QueryParsers.Classic.QueryParser.Conjunction">Conjunction()</h4>
<div class="markdown level1 summary"></div>
<div class="markdown level1 conceptual"></div>
<h5 class="decalaration">Declaration</h5>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">public int Conjunction()</code></pre>
</div>
<h5 class="returns">Returns</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><span class="xref">System.Int32</span></td>
<td></td>
</tr>
</tbody>
</table>
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<a id="Lucene_Net_QueryParsers_Classic_QueryParser_Disable_tracing_" data-uid="Lucene.Net.QueryParsers.Classic.QueryParser.Disable_tracing*"></a>
<h4 id="Lucene_Net_QueryParsers_Classic_QueryParser_Disable_tracing" data-uid="Lucene.Net.QueryParsers.Classic.QueryParser.Disable_tracing">Disable_tracing()</h4>
<div class="markdown level1 summary"><p>Disable tracing. </p>
</div>
<div class="markdown level1 conceptual"></div>
<h5 class="decalaration">Declaration</h5>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">public void Disable_tracing()</code></pre>
</div>
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<h4 id="Lucene_Net_QueryParsers_Classic_QueryParser_Enable_tracing" data-uid="Lucene.Net.QueryParsers.Classic.QueryParser.Enable_tracing">Enable_tracing()</h4>
<div class="markdown level1 summary"><p>Enable tracing. </p>
</div>
<div class="markdown level1 conceptual"></div>
<h5 class="decalaration">Declaration</h5>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">public void Enable_tracing()</code></pre>
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<a id="Lucene_Net_QueryParsers_Classic_QueryParser_GenerateParseException_" data-uid="Lucene.Net.QueryParsers.Classic.QueryParser.GenerateParseException*"></a>
<h4 id="Lucene_Net_QueryParsers_Classic_QueryParser_GenerateParseException" data-uid="Lucene.Net.QueryParsers.Classic.QueryParser.GenerateParseException">GenerateParseException()</h4>
<div class="markdown level1 summary"><p>Generate ParseException. </p>
</div>
<div class="markdown level1 conceptual"></div>
<h5 class="decalaration">Declaration</h5>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">public virtual ParseException GenerateParseException()</code></pre>
</div>
<h5 class="returns">Returns</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><a class="xref" href="Lucene.Net.QueryParsers.Classic.ParseException.html">ParseException</a></td>
<td></td>
</tr>
</tbody>
</table>
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<h4 id="Lucene_Net_QueryParsers_Classic_QueryParser_GetNextToken" data-uid="Lucene.Net.QueryParsers.Classic.QueryParser.GetNextToken">GetNextToken()</h4>
<div class="markdown level1 summary"><p>Get the next Token. </p>
</div>
<div class="markdown level1 conceptual"></div>
<h5 class="decalaration">Declaration</h5>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">public Token GetNextToken()</code></pre>
</div>
<h5 class="returns">Returns</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><a class="xref" href="Lucene.Net.QueryParsers.Classic.Token.html">Token</a></td>
<td></td>
</tr>
</tbody>
</table>
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<a id="Lucene_Net_QueryParsers_Classic_QueryParser_GetToken_" data-uid="Lucene.Net.QueryParsers.Classic.QueryParser.GetToken*"></a>
<h4 id="Lucene_Net_QueryParsers_Classic_QueryParser_GetToken_System_Int32_" data-uid="Lucene.Net.QueryParsers.Classic.QueryParser.GetToken(System.Int32)">GetToken(Int32)</h4>
<div class="markdown level1 summary"><p>Get the specific Token. </p>
</div>
<div class="markdown level1 conceptual"></div>
<h5 class="decalaration">Declaration</h5>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">public Token GetToken(int index)</code></pre>
</div>
<h5 class="parameters">Parameters</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Name</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><span class="xref">System.Int32</span></td>
<td><span class="parametername">index</span></td>
<td></td>
</tr>
</tbody>
</table>
<h5 class="returns">Returns</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><a class="xref" href="Lucene.Net.QueryParsers.Classic.Token.html">Token</a></td>
<td></td>
</tr>
</tbody>
</table>
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<a id="Lucene_Net_QueryParsers_Classic_QueryParser_Modifiers_" data-uid="Lucene.Net.QueryParsers.Classic.QueryParser.Modifiers*"></a>
<h4 id="Lucene_Net_QueryParsers_Classic_QueryParser_Modifiers" data-uid="Lucene.Net.QueryParsers.Classic.QueryParser.Modifiers">Modifiers()</h4>
<div class="markdown level1 summary"></div>
<div class="markdown level1 conceptual"></div>
<h5 class="decalaration">Declaration</h5>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">public int Modifiers()</code></pre>
</div>
<h5 class="returns">Returns</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><span class="xref">System.Int32</span></td>
<td></td>
</tr>
</tbody>
</table>
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<a id="Lucene_Net_QueryParsers_Classic_QueryParser_Query_" data-uid="Lucene.Net.QueryParsers.Classic.QueryParser.Query*"></a>
<h4 id="Lucene_Net_QueryParsers_Classic_QueryParser_Query_System_String_" data-uid="Lucene.Net.QueryParsers.Classic.QueryParser.Query(System.String)">Query(String)</h4>
<div class="markdown level1 summary"></div>
<div class="markdown level1 conceptual"></div>
<h5 class="decalaration">Declaration</h5>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">public Query Query(string field)</code></pre>
</div>
<h5 class="parameters">Parameters</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Name</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><span class="xref">System.String</span></td>
<td><span class="parametername">field</span></td>
<td></td>
</tr>
</tbody>
</table>
<h5 class="returns">Returns</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><span class="xref">Lucene.Net.Search.Query</span></td>
<td></td>
</tr>
</tbody>
</table>
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<a id="Lucene_Net_QueryParsers_Classic_QueryParser_ReInit_" data-uid="Lucene.Net.QueryParsers.Classic.QueryParser.ReInit*"></a>
<h4 id="Lucene_Net_QueryParsers_Classic_QueryParser_ReInit_Lucene_Net_QueryParsers_Classic_ICharStream_" data-uid="Lucene.Net.QueryParsers.Classic.QueryParser.ReInit(Lucene.Net.QueryParsers.Classic.ICharStream)">ReInit(ICharStream)</h4>
<div class="markdown level1 summary"><p>Reinitialize. </p>
</div>
<div class="markdown level1 conceptual"></div>
<h5 class="decalaration">Declaration</h5>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">public override void ReInit(ICharStream stream)</code></pre>
</div>
<h5 class="parameters">Parameters</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Name</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><a class="xref" href="Lucene.Net.QueryParsers.Classic.ICharStream.html">ICharStream</a></td>
<td><span class="parametername">stream</span></td>
<td></td>
</tr>
</tbody>
</table>
<h5 class="overrides">Overrides</h5>
<div><a class="xref" href="Lucene.Net.QueryParsers.Classic.QueryParserBase.html#Lucene_Net_QueryParsers_Classic_QueryParserBase_ReInit_Lucene_Net_QueryParsers_Classic_ICharStream_">QueryParserBase.ReInit(ICharStream)</a></div>
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<a id="Lucene_Net_QueryParsers_Classic_QueryParser_ReInit_" data-uid="Lucene.Net.QueryParsers.Classic.QueryParser.ReInit*"></a>
<h4 id="Lucene_Net_QueryParsers_Classic_QueryParser_ReInit_Lucene_Net_QueryParsers_Classic_QueryParserTokenManager_" data-uid="Lucene.Net.QueryParsers.Classic.QueryParser.ReInit(Lucene.Net.QueryParsers.Classic.QueryParserTokenManager)">ReInit(QueryParserTokenManager)</h4>
<div class="markdown level1 summary"><p>Reinitialize. </p>
</div>
<div class="markdown level1 conceptual"></div>
<h5 class="decalaration">Declaration</h5>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">public virtual void ReInit(QueryParserTokenManager tm)</code></pre>
</div>
<h5 class="parameters">Parameters</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Name</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><a class="xref" href="Lucene.Net.QueryParsers.Classic.QueryParserTokenManager.html">QueryParserTokenManager</a></td>
<td><span class="parametername">tm</span></td>
<td></td>
</tr>
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<a id="Lucene_Net_QueryParsers_Classic_QueryParser_Term_" data-uid="Lucene.Net.QueryParsers.Classic.QueryParser.Term*"></a>
<h4 id="Lucene_Net_QueryParsers_Classic_QueryParser_Term_System_String_" data-uid="Lucene.Net.QueryParsers.Classic.QueryParser.Term(System.String)">Term(String)</h4>
<div class="markdown level1 summary"></div>
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<h5 class="decalaration">Declaration</h5>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">public Query Term(string field)</code></pre>
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<h5 class="parameters">Parameters</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Name</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><span class="xref">System.String</span></td>
<td><span class="parametername">field</span></td>
<td></td>
</tr>
</tbody>
</table>
<h5 class="returns">Returns</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><span class="xref">Lucene.Net.Search.Query</span></td>
<td></td>
</tr>
</tbody>
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<a id="Lucene_Net_QueryParsers_Classic_QueryParser_TopLevelQuery_" data-uid="Lucene.Net.QueryParsers.Classic.QueryParser.TopLevelQuery*"></a>
<h4 id="Lucene_Net_QueryParsers_Classic_QueryParser_TopLevelQuery_System_String_" data-uid="Lucene.Net.QueryParsers.Classic.QueryParser.TopLevelQuery(System.String)">TopLevelQuery(String)</h4>
<div class="markdown level1 summary"></div>
<div class="markdown level1 conceptual"></div>
<h5 class="decalaration">Declaration</h5>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">public override sealed Query TopLevelQuery(string field)</code></pre>
</div>
<h5 class="parameters">Parameters</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Name</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><span class="xref">System.String</span></td>
<td><span class="parametername">field</span></td>
<td></td>
</tr>
</tbody>
</table>
<h5 class="returns">Returns</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><span class="xref">Lucene.Net.Search.Query</span></td>
<td></td>
</tr>
</tbody>
</table>
<h5 class="overrides">Overrides</h5>
<div><a class="xref" href="Lucene.Net.QueryParsers.Classic.QueryParserBase.html#Lucene_Net_QueryParsers_Classic_QueryParserBase_TopLevelQuery_System_String_">QueryParserBase.TopLevelQuery(String)</a></div>
<h3 id="implements">Implements</h3>
<div>
<a class="xref" href="Lucene.Net.QueryParsers.Flexible.Standard.ICommonQueryParserConfiguration.html">ICommonQueryParserConfiguration</a>
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