Line data    Source code

       1             : /******************************************************************************
       2             :  *
       3             :  * Project:  OpenGIS Simple Features Reference Implementation
       4             :  * Purpose:  Implementation of OGC Features and Geometries JSON (JSON-FG)
       5             :  * Author:   Even Rouault <even.rouault at spatialys.com>
       6             :  *
       7             :  ******************************************************************************
       8             :  * Copyright (c) 2023, Even Rouault <even.rouault at spatialys.com>
       9             :  *
      10             :  * SPDX-License-Identifier: MIT
      11             :  ****************************************************************************/
      12             : 
      13             : #include "ogr_jsonfg.h"
      14             : 
      15             : /************************************************************************/
      16             : /*                OGRJSONFGMemLayer::OGRJSONFGMemLayer()                */
      17             : /************************************************************************/
      18             : 
      19          50 : OGRJSONFGMemLayer::OGRJSONFGMemLayer(GDALDataset *poDS, const char *pszName,
      20             :                                      OGRSpatialReference *poSRS,
      21          50 :                                      OGRwkbGeometryType eGType)
      22          50 :     : OGRMemLayer(pszName, poSRS, eGType), m_poDS(poDS)
      23             : {
      24          50 :     SetAdvertizeUTF8(true);
      25          50 :     SetUpdatable(false);
      26          50 : }
      27             : 
      28             : /************************************************************************/
      29             : /*                OGRJSONFGMemLayer::~OGRJSONFGMemLayer()               */
      30             : /************************************************************************/
      31             : 
      32             : OGRJSONFGMemLayer::~OGRJSONFGMemLayer() = default;
      33             : 
      34             : /************************************************************************/
      35             : /*                           AddFeature                                 */
      36             : /************************************************************************/
      37             : 
      38          52 : void OGRJSONFGMemLayer::AddFeature(std::unique_ptr<OGRFeature> poFeature)
      39             : {
      40          52 :     GIntBig nFID = poFeature->GetFID();
      41             : 
      42             :     // Detect potential FID duplicates and make sure they are eventually
      43             :     // unique.
      44          52 :     if (-1 == nFID)
      45             :     {
      46          50 :         nFID = GetFeatureCount(FALSE);
      47          50 :         OGRFeature *poTryFeature = nullptr;
      48          50 :         while ((poTryFeature = GetFeature(nFID)) != nullptr)
      49             :         {
      50           0 :             nFID++;
      51           0 :             delete poTryFeature;
      52             :         }
      53             :     }
      54             :     else
      55             :     {
      56           2 :         OGRFeature *poTryFeature = nullptr;
      57           2 :         if ((poTryFeature = GetFeature(nFID)) != nullptr)
      58             :         {
      59           0 :             if (!bOriginalIdModified_)
      60             :             {
      61           0 :                 CPLError(
      62             :                     CE_Warning, CPLE_AppDefined,
      63             :                     "Several features with id = " CPL_FRMT_GIB " have been "
      64             :                     "found. Altering it to be unique. This warning will not "
      65             :                     "be emitted anymore for this layer",
      66             :                     nFID);
      67           0 :                 bOriginalIdModified_ = true;
      68             :             }
      69           0 :             delete poTryFeature;
      70           0 :             nFID = GetFeatureCount(FALSE);
      71           0 :             while ((poTryFeature = GetFeature(nFID)) != nullptr)
      72             :             {
      73           0 :                 nFID++;
      74           0 :                 delete poTryFeature;
      75             :             }
      76             :         }
      77             :     }
      78          52 :     poFeature->SetFID(nFID);
      79             : 
      80          52 :     if (!CPL_INT64_FITS_ON_INT32(nFID))
      81           0 :         SetMetadataItem(OLMD_FID64, "YES");
      82             : 
      83          52 :     const bool bIsUpdatable = IsUpdatable();
      84          52 :     SetUpdatable(true);  // Temporary toggle on updatable flag.
      85          52 :     CPL_IGNORE_RET_VAL(OGRMemLayer::SetFeature(poFeature.get()));
      86          52 :     SetUpdatable(bIsUpdatable);
      87          52 :     SetUpdated(false);
      88          52 : }
      89             : 
      90             : /************************************************************************/
      91             : /*                           TestCapability()                           */
      92             : /************************************************************************/
      93             : 
      94         100 : int OGRJSONFGMemLayer::TestCapability(const char *pszCap)
      95             : 
      96             : {
      97         100 :     if (EQUAL(pszCap, OLCCurveGeometries))
      98          50 :         return FALSE;
      99             : 
     100          50 :     else if (EQUAL(pszCap, OLCMeasuredGeometries))
     101          50 :         return FALSE;
     102             : 
     103           0 :     return OGRMemLayer::TestCapability(pszCap);
     104             : }