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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
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<title>Xapian: API Documentation: Xapian::RangeProcessor Class Reference</title>
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<p>Base class for range processors.  
 <a href="classXapian_1_1RangeProcessor.html#details">More...</a></p>
<div id="dynsection-0" onclick="return toggleVisibility(this)" class="dynheader closed" style="cursor:pointer;">
  <img id="dynsection-0-trigger" src="closed.png" alt="+"/> Inheritance diagram for Xapian::RangeProcessor:</div>
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<map name="Xapian_1_1RangeProcessor_inherit__map" id="Xapian_1_1RangeProcessor_inherit__map">
<area shape="rect" id="node3" href="classXapian_1_1DateRangeProcessor.html" title="Handle a date range. " alt="" coords="5,155,200,181"/>
<area shape="rect" id="node4" href="classXapian_1_1NumberRangeProcessor.html" title="Handle a number range. " alt="" coords="224,155,437,181"/>
</map>
<center><span class="legend">[<a href="graph_legend.html">legend</a>]</span></center></div>
<table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-methods"></a>
Public Member Functions</h2></td></tr>
<tr class="memitem:afa529885bf1654cfacb0d5df37431852"><td class="memItemLeft" align="right" valign="top">&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classXapian_1_1RangeProcessor.html#afa529885bf1654cfacb0d5df37431852">RangeProcessor</a> ()</td></tr>
<tr class="memdesc:afa529885bf1654cfacb0d5df37431852"><td class="mdescLeft">&#160;</td><td class="mdescRight">Default constructor.  <a href="#afa529885bf1654cfacb0d5df37431852">More...</a><br /></td></tr>
<tr class="separator:afa529885bf1654cfacb0d5df37431852"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:aca78f2633f761f70a2e94e62e741f0ba"><td class="memItemLeft" align="right" valign="top">&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classXapian_1_1RangeProcessor.html#aca78f2633f761f70a2e94e62e741f0ba">RangeProcessor</a> (<a class="el" href="namespaceXapian.html#a94a899651fa920c72ffa9635bde630ea">Xapian::valueno</a> slot_, const std::string &amp;str_=std::string(), unsigned flags_=0)</td></tr>
<tr class="memdesc:aca78f2633f761f70a2e94e62e741f0ba"><td class="mdescLeft">&#160;</td><td class="mdescRight">Constructor.  <a href="#aca78f2633f761f70a2e94e62e741f0ba">More...</a><br /></td></tr>
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<tr class="memitem:a8e4e5a0afdabcb3fb57757518d95f5f1"><td class="memItemLeft" align="right" valign="top"><a id="a8e4e5a0afdabcb3fb57757518d95f5f1"></a>
virtual&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classXapian_1_1RangeProcessor.html#a8e4e5a0afdabcb3fb57757518d95f5f1">~RangeProcessor</a> ()</td></tr>
<tr class="memdesc:a8e4e5a0afdabcb3fb57757518d95f5f1"><td class="mdescLeft">&#160;</td><td class="mdescRight">Destructor. <br /></td></tr>
<tr class="separator:a8e4e5a0afdabcb3fb57757518d95f5f1"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a480be06c8508458ca90409265175d1b1"><td class="memItemLeft" align="right" valign="top"><a class="el" href="classXapian_1_1Query.html">Xapian::Query</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classXapian_1_1RangeProcessor.html#a480be06c8508458ca90409265175d1b1">check_range</a> (const std::string &amp;b, const std::string &amp;e)</td></tr>
<tr class="memdesc:a480be06c8508458ca90409265175d1b1"><td class="mdescLeft">&#160;</td><td class="mdescRight">Check prefix/suffix on range.  <a href="#a480be06c8508458ca90409265175d1b1">More...</a><br /></td></tr>
<tr class="separator:a480be06c8508458ca90409265175d1b1"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a4e84753e4553ae7515edb4ef12da55b0"><td class="memItemLeft" align="right" valign="top">virtual <a class="el" href="classXapian_1_1Query.html">Xapian::Query</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classXapian_1_1RangeProcessor.html#a4e84753e4553ae7515edb4ef12da55b0">operator()</a> (const std::string &amp;begin, const std::string &amp;end)</td></tr>
<tr class="memdesc:a4e84753e4553ae7515edb4ef12da55b0"><td class="mdescLeft">&#160;</td><td class="mdescRight">Check for a valid range of this type.  <a href="#a4e84753e4553ae7515edb4ef12da55b0">More...</a><br /></td></tr>
<tr class="separator:a4e84753e4553ae7515edb4ef12da55b0"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a1b203bf0fe2030605fa0dcdcb9ce7b73"><td class="memItemLeft" align="right" valign="top"><a class="el" href="classXapian_1_1RangeProcessor.html">RangeProcessor</a> *&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classXapian_1_1RangeProcessor.html#a1b203bf0fe2030605fa0dcdcb9ce7b73">release</a> ()</td></tr>
<tr class="memdesc:a1b203bf0fe2030605fa0dcdcb9ce7b73"><td class="mdescLeft">&#160;</td><td class="mdescRight">Start reference counting this object.  <a href="#a1b203bf0fe2030605fa0dcdcb9ce7b73">More...</a><br /></td></tr>
<tr class="separator:a1b203bf0fe2030605fa0dcdcb9ce7b73"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a814c0e2d12c56567f5bfc59861648d08"><td class="memItemLeft" align="right" valign="top">const <a class="el" href="classXapian_1_1RangeProcessor.html">RangeProcessor</a> *&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classXapian_1_1RangeProcessor.html#a814c0e2d12c56567f5bfc59861648d08">release</a> () const</td></tr>
<tr class="memdesc:a814c0e2d12c56567f5bfc59861648d08"><td class="mdescLeft">&#160;</td><td class="mdescRight">Start reference counting this object.  <a href="#a814c0e2d12c56567f5bfc59861648d08">More...</a><br /></td></tr>
<tr class="separator:a814c0e2d12c56567f5bfc59861648d08"><td class="memSeparator" colspan="2">&#160;</td></tr>
</table><table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pro-attribs"></a>
Protected Attributes</h2></td></tr>
<tr class="memitem:acecd504902d023c15c7ee070b5b986cc"><td class="memItemLeft" align="right" valign="top"><a class="el" href="namespaceXapian.html#a94a899651fa920c72ffa9635bde630ea">Xapian::valueno</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classXapian_1_1RangeProcessor.html#acecd504902d023c15c7ee070b5b986cc">slot</a></td></tr>
<tr class="memdesc:acecd504902d023c15c7ee070b5b986cc"><td class="mdescLeft">&#160;</td><td class="mdescRight">The value slot to process.  <a href="#acecd504902d023c15c7ee070b5b986cc">More...</a><br /></td></tr>
<tr class="separator:acecd504902d023c15c7ee070b5b986cc"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ac6e146d4853c71fbcfebf82d97756a5d"><td class="memItemLeft" align="right" valign="top">std::string&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classXapian_1_1RangeProcessor.html#ac6e146d4853c71fbcfebf82d97756a5d">str</a></td></tr>
<tr class="memdesc:ac6e146d4853c71fbcfebf82d97756a5d"><td class="mdescLeft">&#160;</td><td class="mdescRight">The prefix (or suffix with RP_SUFFIX) string to look for.  <a href="#ac6e146d4853c71fbcfebf82d97756a5d">More...</a><br /></td></tr>
<tr class="separator:ac6e146d4853c71fbcfebf82d97756a5d"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a0b4f9b87b07a0bbd54bd019751dd97ef"><td class="memItemLeft" align="right" valign="top">unsigned&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classXapian_1_1RangeProcessor.html#a0b4f9b87b07a0bbd54bd019751dd97ef">flags</a></td></tr>
<tr class="memdesc:a0b4f9b87b07a0bbd54bd019751dd97ef"><td class="mdescLeft">&#160;</td><td class="mdescRight">Flags.  <a href="#a0b4f9b87b07a0bbd54bd019751dd97ef">More...</a><br /></td></tr>
<tr class="separator:a0b4f9b87b07a0bbd54bd019751dd97ef"><td class="memSeparator" colspan="2">&#160;</td></tr>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><p>Base class for range processors. </p>
</div><h2 class="groupheader">Constructor &amp; Destructor Documentation</h2>
<a id="afa529885bf1654cfacb0d5df37431852"></a>
<h2 class="memtitle"><span class="permalink"><a href="#afa529885bf1654cfacb0d5df37431852">&#9670;&nbsp;</a></span>RangeProcessor() <span class="overload">[1/2]</span></h2>

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<p>Default constructor. </p>

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<a id="aca78f2633f761f70a2e94e62e741f0ba"></a>
<h2 class="memtitle"><span class="permalink"><a href="#aca78f2633f761f70a2e94e62e741f0ba">&#9670;&nbsp;</a></span>RangeProcessor() <span class="overload">[2/2]</span></h2>

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          <td class="memname">Xapian::RangeProcessor::RangeProcessor </td>
          <td>(</td>
          <td class="paramtype"><a class="el" href="namespaceXapian.html#a94a899651fa920c72ffa9635bde630ea">Xapian::valueno</a>&#160;</td>
          <td class="paramname"><em>slot_</em>, </td>
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          <td class="paramtype">const std::string &amp;&#160;</td>
          <td class="paramname"><em>str_</em> = <code>std::string()</code>, </td>
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          <td class="paramtype">unsigned&#160;</td>
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<p>Constructor. </p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">slot_</td><td>Which value slot to generate ranges over. </td></tr>
    <tr><td class="paramname">str_</td><td>A string to look for to recognise values as belonging to this range (as a prefix by default, or as a suffix if flags Xapian::RP_SUFFIX is specified). </td></tr>
    <tr><td class="paramname">flags_</td><td>Zero or more of the following flags, combined with bitwise-or (| in C++):<ul>
<li>Xapian::RP_SUFFIX - require <em>str_</em> as a suffix instead of a prefix.</li>
<li>Xapian::RP_REPEATED - optionally allow <em>str_</em> on both ends of the range - e.g. $1..$10 or 5m..50m. By default a prefix is only checked for on the start (e.g. date:1/1/1980..31/12/1989), and a suffix only on the end (e.g. 2..12kg). </li>
</ul>
</td></tr>
  </table>
  </dd>
</dl>

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<h2 class="groupheader">Member Function Documentation</h2>
<a id="a480be06c8508458ca90409265175d1b1"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a480be06c8508458ca90409265175d1b1">&#9670;&nbsp;</a></span>check_range()</h2>

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          <td class="memname"><a class="el" href="classXapian_1_1Query.html">Xapian::Query</a> Xapian::RangeProcessor::check_range </td>
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<p>Check prefix/suffix on range. </p>
<p>If they match, remove the prefix/suffix and then call <a class="el" href="classXapian_1_1RangeProcessor.html#a4e84753e4553ae7515edb4ef12da55b0" title="Check for a valid range of this type. ">operator()()</a> to try to handle the range. </p>

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<h2 class="memtitle"><span class="permalink"><a href="#a4e84753e4553ae7515edb4ef12da55b0">&#9670;&nbsp;</a></span>operator()()</h2>

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          <td class="paramname"><em>begin</em>, </td>
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<p>Check for a valid range of this type. </p>
<p>Override this method to implement your own range handling.</p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">begin</td><td>The start of the range as specified in the query string by the user. </td></tr>
    <tr><td class="paramname">end</td><td>The end of the range as specified in the query string by the user (empty string for no upper limit).</td></tr>
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<dl class="section return"><dt>Returns</dt><dd>An OP_VALUE_RANGE <a class="el" href="classXapian_1_1Query.html" title="Class representing a query. ">Query</a> object (or if end.empty(), an OP_VALUE_GE <a class="el" href="classXapian_1_1Query.html" title="Class representing a query. ">Query</a> object). </dd></dl>

<p>Reimplemented in <a class="el" href="classXapian_1_1NumberRangeProcessor.html#a063f5f3d767c09f0daab303de96fdfc7">Xapian::NumberRangeProcessor</a>, and <a class="el" href="classXapian_1_1DateRangeProcessor.html#ad8f4e1d3ae52b55865398d3c69ba8660">Xapian::DateRangeProcessor</a>.</p>

<p class="reference">Referenced by <a class="el" href="classXapian_1_1QueryParser.html#a8f8583a9f044f2eb33859b442a8aea76">Xapian::QueryParser::add_valuerangeprocessor()</a>.</p>

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<h2 class="memtitle"><span class="permalink"><a href="#a1b203bf0fe2030605fa0dcdcb9ce7b73">&#9670;&nbsp;</a></span>release() <span class="overload">[1/2]</span></h2>

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<p>Start reference counting this object. </p>
<p>You can hand ownership of a dynamically allocated <a class="el" href="classXapian_1_1RangeProcessor.html" title="Base class for range processors. ">RangeProcessor</a> object to <a class="el" href="namespaceXapian.html" title="The Xapian namespace contains public interfaces for the Xapian library. ">Xapian</a> by calling <a class="el" href="classXapian_1_1RangeProcessor.html#a1b203bf0fe2030605fa0dcdcb9ce7b73" title="Start reference counting this object. ">release()</a> and then passing the object to a <a class="el" href="namespaceXapian.html" title="The Xapian namespace contains public interfaces for the Xapian library. ">Xapian</a> method. <a class="el" href="namespaceXapian.html" title="The Xapian namespace contains public interfaces for the Xapian library. ">Xapian</a> will arrange to delete the object once it is no longer required. </p>

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<h2 class="memtitle"><span class="permalink"><a href="#a814c0e2d12c56567f5bfc59861648d08">&#9670;&nbsp;</a></span>release() <span class="overload">[2/2]</span></h2>

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<p>Start reference counting this object. </p>
<p>You can hand ownership of a dynamically allocated <a class="el" href="classXapian_1_1RangeProcessor.html" title="Base class for range processors. ">RangeProcessor</a> object to <a class="el" href="namespaceXapian.html" title="The Xapian namespace contains public interfaces for the Xapian library. ">Xapian</a> by calling <a class="el" href="classXapian_1_1RangeProcessor.html#a1b203bf0fe2030605fa0dcdcb9ce7b73" title="Start reference counting this object. ">release()</a> and then passing the object to a <a class="el" href="namespaceXapian.html" title="The Xapian namespace contains public interfaces for the Xapian library. ">Xapian</a> method. <a class="el" href="namespaceXapian.html" title="The Xapian namespace contains public interfaces for the Xapian library. ">Xapian</a> will arrange to delete the object once it is no longer required. </p>

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<h2 class="groupheader">Member Data Documentation</h2>
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<h2 class="memtitle"><span class="permalink"><a href="#a0b4f9b87b07a0bbd54bd019751dd97ef">&#9670;&nbsp;</a></span>flags</h2>

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<p>Flags. </p>
<p>Bitwise-or (| in C++) of zero or more of the following:</p><ul>
<li>Xapian::RP_SUFFIX - require <em>str</em> as a suffix instead of a prefix.</li>
<li>Xapian::RP_REPEATED - optionally allow <em>str</em> on both ends of the range - e.g. $1..$10 or 5m..50m. By default a prefix is only checked for on the start (e.g. date:1/1/1980..31/12/1989), and a suffix only on the end (e.g. 2..12kg). </li>
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<h2 class="memtitle"><span class="permalink"><a href="#acecd504902d023c15c7ee070b5b986cc">&#9670;&nbsp;</a></span>slot</h2>

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          <td class="memname"><a class="el" href="namespaceXapian.html#a94a899651fa920c72ffa9635bde630ea">Xapian::valueno</a> Xapian::RangeProcessor::slot</td>
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<p>The value slot to process. </p>
<p>If this range processor isn't value-based, it can ignore this member. </p>

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<h2 class="memtitle"><span class="permalink"><a href="#ac6e146d4853c71fbcfebf82d97756a5d">&#9670;&nbsp;</a></span>str</h2>

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<p>The prefix (or suffix with RP_SUFFIX) string to look for. </p>

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<hr/>The documentation for this class was generated from the following file:<ul>
<li>xapian/<a class="el" href="queryparser_8h.html">queryparser.h</a></li>
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Documentation for Xapian (version 1.4.3).<br>
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