94 lines
3.7 KiB
C
94 lines
3.7 KiB
C
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/******************************************************************************
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* $Id: ogr_attrind.h 32177 2015-12-14 07:25:30Z goatbar $
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*
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* Project: OpenGIS Simple Features Reference Implementation
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* Purpose: Classes related to generic implementation of attribute indexing.
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* Author: Frank Warmerdam, warmerdam@pobox.com
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*
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******************************************************************************
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* Copyright (c) 2003, Frank Warmerdam <warmerdam@pobox.com>
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included
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* in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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****************************************************************************/
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#ifndef OGR_ATTRIND_H_INCLUDED
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#define OGR_ATTRIND_H_INCLUDED
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#include "ogrsf_frmts.h"
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/************************************************************************/
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/* OGRAttrIndex */
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/* */
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/* Base class for accessing the indexing info about one field. */
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/************************************************************************/
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class CPL_DLL OGRAttrIndex
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{
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protected:
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OGRAttrIndex();
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public:
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virtual ~OGRAttrIndex();
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virtual GIntBig GetFirstMatch( OGRField *psKey ) = 0;
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virtual GIntBig *GetAllMatches( OGRField *psKey ) = 0;
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virtual GIntBig *GetAllMatches( OGRField *psKey, GIntBig* panFIDList, int* nFIDCount, int* nLength ) = 0;
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virtual OGRErr AddEntry( OGRField *psKey, GIntBig nFID ) = 0;
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virtual OGRErr RemoveEntry( OGRField *psKey, GIntBig nFID ) = 0;
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virtual OGRErr Clear() = 0;
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};
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/************************************************************************/
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/* OGRLayerAttrIndex */
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/* */
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/* Base class representing attribute indexes for all indexed */
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/* fields in a layer. */
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/************************************************************************/
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class CPL_DLL OGRLayerAttrIndex
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{
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protected:
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OGRLayer *poLayer;
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char *pszIndexPath;
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OGRLayerAttrIndex();
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public:
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virtual ~OGRLayerAttrIndex();
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virtual OGRErr Initialize( const char *pszIndexPath, OGRLayer * ) = 0;
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virtual OGRErr CreateIndex( int iField ) = 0;
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virtual OGRErr DropIndex( int iField ) = 0;
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virtual OGRErr IndexAllFeatures( int iField = -1 ) = 0;
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virtual OGRErr AddToIndex( OGRFeature *poFeature, int iField = -1 ) = 0;
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virtual OGRErr RemoveFromIndex( OGRFeature *poFeature ) = 0;
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virtual OGRAttrIndex *GetFieldIndex( int iField ) = 0;
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};
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OGRLayerAttrIndex CPL_DLL *OGRCreateDefaultLayerIndex();
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#endif /* ndef OGR_ATTRIND_H_INCLUDED */
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