Function msOGRLayerNextShape

mapogr.cpp:2619–2668

* msOGRLayerNextShape() * * Returns shape sequentially from OGR data source. * msOGRLayerWhichShape() must have been called first. * * Returns MS_SUCCESS/MS_FAILURE **********************************************************************/

 * Returns MS_SUCCESS/MS_FAILURE
 **********************************************************************/
int msOGRLayerNextShape(layerObj *layer, shapeObj *shape) 
{
#ifdef USE_OGR
  msOGRFileInfo *psInfo =(msOGRFileInfo*)layer->layerinfo;
  int  status;

  if (psInfo == NULL || psInfo->hLayer == NULL)
  {
    msSetError(MS_MISCERR, "Assertion failed: OGR layer not opened!!!", 
               "msOGRLayerNextShape()");
    return(MS_FAILURE);
  }

  if( layer->tileindex == NULL )
      return msOGRFileNextShape( layer, shape, psInfo );

  // Do we need to load the first tile? 
  if( psInfo->poCurTile == NULL )
  {
      status = msOGRFileReadTile( layer, psInfo );
      if( status != MS_SUCCESS )
          return status;
  }

  do 
  {
      // Try getting a shape from this tile.
      status = msOGRFileNextShape( layer, shape, psInfo->poCurTile );
      if( status != MS_DONE )
          return status;
  
      // try next tile.
      status = msOGRFileReadTile( layer, psInfo );
      if( status != MS_SUCCESS )
          return status;
  } while( status == MS_SUCCESS );

  return status;
  
#else
/* ------------------------------------------------------------------
 * OGR Support not included...
 * ------------------------------------------------------------------ */

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

#endif /* USE_OGR */
}

/**********************************************************************
 *                     msOGRLayerGetShape()