Function msOGRLayerGetItems

mapogr.cpp:2421–2462

* msOGRLayerGetItems() * * Load item (i.e. field) names in a char array. If we are working * with a tiled layer, ensure a tile is loaded and use it for the items. * It is implicitly assumed that the schemas will match on all tiles. **********************************************************************/

 * It is implicitly assumed that the schemas will match on all tiles. 
 **********************************************************************/
int msOGRLayerGetItems(layerObj *layer)
{
#ifdef USE_OGR
  msOGRFileInfo *psInfo =(msOGRFileInfo*)layer->layerinfo;
  
  if (psInfo == NULL || psInfo->hLayer == NULL)
  {
    msSetError(MS_MISCERR, "Assertion failed: OGR layer not opened!!!", 
               "msOGRLayerGetItems()");
    return(MS_FAILURE);
  }

  if( layer->tileindex != NULL )
  {
      if( psInfo->poCurTile == NULL 
          && msOGRFileReadTile( layer, psInfo ) != MS_SUCCESS )
          return MS_FAILURE;
      
      psInfo = psInfo->poCurTile;
  }

  layer->numitems = 0;
  layer->items = msOGRFileGetItems(layer, psInfo);
  if( layer->items == NULL )
      return MS_FAILURE;

  while( layer->items[layer->numitems] != NULL )
      layer->numitems++;

  return msOGRLayerInitItemInfo(layer);

#else
/* ------------------------------------------------------------------
 * OGR Support not included...
 * ------------------------------------------------------------------ */

  msSetError(MS_MISCERR, "OGR support is not available.", 
             "msOGRLayerGetItems()");
  return(MS_FAILURE);

#endif /* USE_OGR */
}

/**********************************************************************
 *                     msOGRLayerInitItemInfo()