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<h1>ogr_attrind.h</h1><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/******************************************************************************</span>
<a name="l00002"></a>00002 <span class="comment"> * $Id: ogr_attrind.h 10645 2007-01-18 02:22:39Z warmerdam $</span>
<a name="l00003"></a>00003 <span class="comment"> *</span>
<a name="l00004"></a>00004 <span class="comment"> * Project: OpenGIS Simple Features Reference Implementation</span>
<a name="l00005"></a>00005 <span class="comment"> * Purpose: Classes related to generic implementation of attribute indexing.</span>
<a name="l00006"></a>00006 <span class="comment"> * Author: Frank Warmerdam, warmerdam@pobox.com</span>
<a name="l00007"></a>00007 <span class="comment"> *</span>
<a name="l00008"></a>00008 <span class="comment"> ******************************************************************************</span>
<a name="l00009"></a>00009 <span class="comment"> * Copyright (c) 2003, Frank Warmerdam <warmerdam@pobox.com></span>
<a name="l00010"></a>00010 <span class="comment"> *</span>
<a name="l00011"></a>00011 <span class="comment"> * Permission is hereby granted, free of charge, to any person obtaining a</span>
<a name="l00012"></a>00012 <span class="comment"> * copy of this software and associated documentation files (the "Software"),</span>
<a name="l00013"></a>00013 <span class="comment"> * to deal in the Software without restriction, including without limitation</span>
<a name="l00014"></a>00014 <span class="comment"> * the rights to use, copy, modify, merge, publish, distribute, sublicense,</span>
<a name="l00015"></a>00015 <span class="comment"> * and/or sell copies of the Software, and to permit persons to whom the</span>
<a name="l00016"></a>00016 <span class="comment"> * Software is furnished to do so, subject to the following conditions:</span>
<a name="l00017"></a>00017 <span class="comment"> *</span>
<a name="l00018"></a>00018 <span class="comment"> * The above copyright notice and this permission notice shall be included</span>
<a name="l00019"></a>00019 <span class="comment"> * in all copies or substantial portions of the Software.</span>
<a name="l00020"></a>00020 <span class="comment"> *</span>
<a name="l00021"></a>00021 <span class="comment"> * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS</span>
<a name="l00022"></a>00022 <span class="comment"> * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,</span>
<a name="l00023"></a>00023 <span class="comment"> * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL</span>
<a name="l00024"></a>00024 <span class="comment"> * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER</span>
<a name="l00025"></a>00025 <span class="comment"> * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING</span>
<a name="l00026"></a>00026 <span class="comment"> * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER</span>
<a name="l00027"></a>00027 <span class="comment"> * DEALINGS IN THE SOFTWARE.</span>
<a name="l00028"></a>00028 <span class="comment"> ****************************************************************************/</span>
<a name="l00029"></a>00029
<a name="l00030"></a>00030 <span class="preprocessor">#ifndef _OGR_ATTRIND_H_INCLUDED</span>
<a name="l00031"></a>00031 <span class="preprocessor"></span><span class="preprocessor">#define _OGR_ATTRIND_H_INCLUDED</span>
<a name="l00032"></a>00032 <span class="preprocessor"></span>
<a name="l00033"></a>00033 <span class="preprocessor">#include "<a class="code" href="ogrsf__frmts_8h.html">ogrsf_frmts.h</a>"</span>
<a name="l00034"></a>00034
<a name="l00035"></a>00035 <span class="comment">/************************************************************************/</span>
<a name="l00036"></a>00036 <span class="comment">/* OGRAttrIndex */</span>
<a name="l00037"></a>00037 <span class="comment">/* */</span>
<a name="l00038"></a>00038 <span class="comment">/* Base class for accessing the indexing info about one field. */</span>
<a name="l00039"></a>00039 <span class="comment">/************************************************************************/</span>
<a name="l00040"></a>00040
<a name="l00041"></a><a class="code" href="classOGRAttrIndex.html">00041</a> <span class="keyword">class </span>CPL_DLL <a class="code" href="classOGRAttrIndex.html">OGRAttrIndex</a>
<a name="l00042"></a>00042 {
<a name="l00043"></a>00043 <span class="keyword">protected</span>:
<a name="l00044"></a>00044 <a class="code" href="classOGRAttrIndex.html">OGRAttrIndex</a>();
<a name="l00045"></a>00045
<a name="l00046"></a>00046 <span class="keyword">public</span>:
<a name="l00047"></a>00047 <span class="keyword">virtual</span> ~<a class="code" href="classOGRAttrIndex.html">OGRAttrIndex</a>();
<a name="l00048"></a>00048
<a name="l00049"></a>00049 <span class="keyword">virtual</span> <span class="keywordtype">long</span> GetFirstMatch( <a class="code" href="unionOGRField.html">OGRField</a> *psKey ) = 0;
<a name="l00050"></a>00050 <span class="keyword">virtual</span> <span class="keywordtype">long</span> *GetAllMatches( <a class="code" href="unionOGRField.html">OGRField</a> *psKey ) = 0;
<a name="l00051"></a>00051
<a name="l00052"></a>00052 <span class="keyword">virtual</span> OGRErr AddEntry( <a class="code" href="unionOGRField.html">OGRField</a> *psKey, <span class="keywordtype">long</span> nFID ) = 0;
<a name="l00053"></a>00053 <span class="keyword">virtual</span> OGRErr RemoveEntry( <a class="code" href="unionOGRField.html">OGRField</a> *psKey, <span class="keywordtype">long</span> nFID ) = 0;
<a name="l00054"></a>00054
<a name="l00055"></a>00055 <span class="keyword">virtual</span> OGRErr Clear() = 0;
<a name="l00056"></a>00056 };
<a name="l00057"></a>00057
<a name="l00058"></a>00058 <span class="comment">/************************************************************************/</span>
<a name="l00059"></a>00059 <span class="comment">/* OGRLayerAttrIndex */</span>
<a name="l00060"></a>00060 <span class="comment">/* */</span>
<a name="l00061"></a>00061 <span class="comment">/* Base class representing attribute indexes for all indexed */</span>
<a name="l00062"></a>00062 <span class="comment">/* fields in a layer. */</span>
<a name="l00063"></a>00063 <span class="comment">/************************************************************************/</span>
<a name="l00064"></a>00064
<a name="l00065"></a><a class="code" href="classOGRLayerAttrIndex.html">00065</a> <span class="keyword">class </span>CPL_DLL <a class="code" href="classOGRLayerAttrIndex.html">OGRLayerAttrIndex</a>
<a name="l00066"></a>00066 {
<a name="l00067"></a>00067 <span class="keyword">protected</span>:
<a name="l00068"></a>00068 <a class="code" href="classOGRLayer.html">OGRLayer</a> *poLayer;
<a name="l00069"></a>00069 <span class="keywordtype">char</span> *pszIndexPath;
<a name="l00070"></a>00070
<a name="l00071"></a>00071 <a class="code" href="classOGRLayerAttrIndex.html">OGRLayerAttrIndex</a>();
<a name="l00072"></a>00072
<a name="l00073"></a>00073 <span class="keyword">public</span>:
<a name="l00074"></a>00074 <span class="keyword">virtual</span> ~<a class="code" href="classOGRLayerAttrIndex.html">OGRLayerAttrIndex</a>();
<a name="l00075"></a>00075
<a name="l00076"></a>00076 <span class="keyword">virtual</span> OGRErr Initialize( <span class="keyword">const</span> <span class="keywordtype">char</span> *pszIndexPath, <a class="code" href="classOGRLayer.html">OGRLayer</a> * ) = 0;
<a name="l00077"></a>00077
<a name="l00078"></a>00078 <span class="keyword">virtual</span> OGRErr CreateIndex( <span class="keywordtype">int</span> iField ) = 0;
<a name="l00079"></a>00079 <span class="keyword">virtual</span> OGRErr DropIndex( <span class="keywordtype">int</span> iField ) = 0;
<a name="l00080"></a>00080 <span class="keyword">virtual</span> OGRErr IndexAllFeatures( <span class="keywordtype">int</span> iField = -1 ) = 0;
<a name="l00081"></a>00081
<a name="l00082"></a>00082 <span class="keyword">virtual</span> OGRErr AddToIndex( <a class="code" href="classOGRFeature.html">OGRFeature</a> *poFeature, <span class="keywordtype">int</span> iField = -1 ) = 0;
<a name="l00083"></a>00083 <span class="keyword">virtual</span> OGRErr RemoveFromIndex( <a class="code" href="classOGRFeature.html">OGRFeature</a> *poFeature ) = 0;
<a name="l00084"></a>00084
<a name="l00085"></a>00085 <span class="keyword">virtual</span> <a class="code" href="classOGRAttrIndex.html">OGRAttrIndex</a> *GetFieldIndex( <span class="keywordtype">int</span> iField ) = 0;
<a name="l00086"></a>00086 };
<a name="l00087"></a>00087
<a name="l00088"></a>00088 <a class="code" href="classOGRLayerAttrIndex.html">OGRLayerAttrIndex</a> CPL_DLL *OGRCreateDefaultLayerIndex();
<a name="l00089"></a>00089
<a name="l00090"></a>00090
<a name="l00091"></a>00091 <span class="preprocessor">#endif </span><span class="comment">/* ndef _OGR_ATTRIND_H_INCLUDED */</span>
<a name="l00092"></a>00092
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