Line data    Source code

       1             : /******************************************************************************
       2             :  *
       3             :  * Project:  OpenGIS Simple Features Reference Implementation
       4             :  * Purpose:  Implements OGRSQLiteSingleFeatureLayer class.
       5             :  * Author:   Even Rouault, <even dot rouault at spatialys.com>
       6             :  *
       7             :  ******************************************************************************
       8             :  * Copyright (c) 2010-2012, Even Rouault <even dot rouault at spatialys.com>
       9             :  *
      10             :  * SPDX-License-Identifier: MIT
      11             :  ****************************************************************************/
      12             : 
      13             : #include "cpl_port.h"
      14             : #include "ogr_sqlite.h"
      15             : 
      16             : #include "cpl_conv.h"
      17             : #include "cpl_string.h"
      18             : #include "ogr_core.h"
      19             : #include "ogr_feature.h"
      20             : 
      21             : /************************************************************************/
      22             : /*                    OGRSQLiteSingleFeatureLayer()                     */
      23             : /************************************************************************/
      24             : 
      25         170 : OGRSQLiteSingleFeatureLayer::OGRSQLiteSingleFeatureLayer(
      26         170 :     const char *pszLayerName, int nValIn)
      27             :     : nVal(nValIn), pszVal(nullptr),
      28         170 :       poFeatureDefn(new OGRFeatureDefn("SELECT")), iNextShapeId(0)
      29             : {
      30         170 :     SetDescription(poFeatureDefn->GetName());
      31         170 :     poFeatureDefn->Reference();
      32         340 :     OGRFieldDefn oField(pszLayerName, OFTInteger);
      33         170 :     poFeatureDefn->AddFieldDefn(&oField);
      34         170 : }
      35             : 
      36             : /************************************************************************/
      37             : /*                    OGRSQLiteSingleFeatureLayer()                     */
      38             : /************************************************************************/
      39             : 
      40           3 : OGRSQLiteSingleFeatureLayer::OGRSQLiteSingleFeatureLayer(
      41           3 :     const char *pszLayerName, const char *pszValIn)
      42           6 :     : nVal(0), pszVal(CPLStrdup(pszValIn)),
      43           3 :       poFeatureDefn(new OGRFeatureDefn("SELECT")), iNextShapeId(0)
      44             : {
      45           3 :     poFeatureDefn->Reference();
      46           6 :     OGRFieldDefn oField(pszLayerName, OFTString);
      47           3 :     poFeatureDefn->AddFieldDefn(&oField);
      48           3 : }
      49             : 
      50             : /************************************************************************/
      51             : /*                   ~OGRSQLiteSingleFeatureLayer()                     */
      52             : /************************************************************************/
      53             : 
      54         346 : OGRSQLiteSingleFeatureLayer::~OGRSQLiteSingleFeatureLayer()
      55             : {
      56         173 :     if (poFeatureDefn != nullptr)
      57             :     {
      58         173 :         poFeatureDefn->Release();
      59         173 :         poFeatureDefn = nullptr;
      60             :     }
      61         173 :     CPLFree(pszVal);
      62         346 : }
      63             : 
      64             : /************************************************************************/
      65             : /*                            ResetReading()                            */
      66             : /************************************************************************/
      67             : 
      68           2 : void OGRSQLiteSingleFeatureLayer::ResetReading()
      69             : {
      70           2 :     iNextShapeId = 0;
      71           2 : }
      72             : 
      73             : /************************************************************************/
      74             : /*                           GetNextFeature()                           */
      75             : /************************************************************************/
      76             : 
      77          69 : OGRFeature *OGRSQLiteSingleFeatureLayer::GetNextFeature()
      78             : {
      79          69 :     if (iNextShapeId != 0)
      80           1 :         return nullptr;
      81             : 
      82          68 :     OGRFeature *poFeature = new OGRFeature(poFeatureDefn);
      83          68 :     if (pszVal)
      84           1 :         poFeature->SetField(0, pszVal);
      85             :     else
      86          67 :         poFeature->SetField(0, nVal);
      87          68 :     poFeature->SetFID(iNextShapeId++);
      88          68 :     return poFeature;
      89             : }
      90             : 
      91             : /************************************************************************/
      92             : /*                            GetLayerDefn()                            */
      93             : /************************************************************************/
      94             : 
      95           0 : OGRFeatureDefn *OGRSQLiteSingleFeatureLayer::GetLayerDefn()
      96             : {
      97           0 :     return poFeatureDefn;
      98             : }
      99             : 
     100             : /************************************************************************/
     101             : /*                           TestCapability()                           */
     102             : /************************************************************************/
     103             : 
     104           0 : int OGRSQLiteSingleFeatureLayer::TestCapability(const char *)
     105             : {
     106           0 :     return FALSE;
     107             : }