/****************************************************************************** * $Id: ogrsqliteselectlayer.cpp 10646 2007-01-18 02:38:10Z warmerdam $ * * Project:  OpenGIS Simple Features Reference Implementation * Purpose:  Implements OGRSQLiteSelectLayer class, layer access to the results *           of a SELECT statement executed via ExecuteSQL(). * Author:   Frank Warmerdam, warmerdam@pobox.com * ****************************************************************************** * Copyright (c) 2004, Frank Warmerdam * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included * in all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER * DEALINGS IN THE SOFTWARE. ****************************************************************************/#include "cpl_conv.h"#include "ogr_sqlite.h"CPL_CVSID("$Id: ogrsqliteselectlayer.cpp 10646 2007-01-18 02:38:10Z warmerdam $");/************************************************************************//*                        OGRSQLiteSelectLayer()                        *//************************************************************************/OGRSQLiteSelectLayer::OGRSQLiteSelectLayer( OGRSQLiteDataSource *poDSIn,                                            sqlite3_stmt *hStmtIn ){    poDS = poDSIn;    iNextShapeId = 0;    nSRSId = -1;    poFeatureDefn = NULL;    hStmt = hStmtIn;    BuildFeatureDefn( "SELECT", hStmt );        // Reset so the next _step() will get the first record.    sqlite3_reset( hStmt );}/************************************************************************//*                       ~OGRSQLiteSelectLayer()                        *//************************************************************************/OGRSQLiteSelectLayer::~OGRSQLiteSelectLayer(){    sqlite3_finalize( hStmt );    hStmt = NULL;}/************************************************************************//*                           ClearStatement()                           *//*                                                                      *//*      Called when GetNextRawFeature() runs out of rows.               *//************************************************************************/void OGRSQLiteSelectLayer::ClearStatement(){}/************************************************************************//*                            ResetReading()                            *//************************************************************************/void OGRSQLiteSelectLayer::ResetReading(){    sqlite3_reset( hStmt );    OGRSQLiteLayer::ResetReading();}/************************************************************************//*                             GetFeature()                             *//************************************************************************/OGRFeature *OGRSQLiteSelectLayer::GetFeature( long nFeatureId ){    return OGRSQLiteLayer::GetFeature( nFeatureId );}/************************************************************************//*                           TestCapability()                           *//************************************************************************/int OGRSQLiteSelectLayer::TestCapability( const char * pszCap ){    return OGRSQLiteLayer::TestCapability( pszCap );}/************************************************************************//*                          GetFeatureCount()                           *//*                                                                      *//*      If a spatial filter is in effect, we turn control over to       *//*      the generic counter.  Otherwise we return the total count.      *//*      Eventually we should consider implementing a more efficient     *//*      way of counting features matching a spatial query.              *//************************************************************************/int OGRSQLiteSelectLayer::GetFeatureCount( int bForce ){    return OGRSQLiteLayer::GetFeatureCount( bForce );}