QgsOgrProvider::addAttributes(): call invalidateConnections() for MapInfo

rouault · rouault · commit 657ac1035633 · 2016-05-29T11:02:51.000+02:00
diff --git a/src/providers/ogr/qgsogrprovider.cpp b/src/providers/ogr/qgsogrprovider.cpp
@@ -1103,6 +1103,13 @@ bool QgsOgrProvider::addAttributes( const QList<QgsField> &attributes )
   if ( !doInitialActionsForEdition() )
     return false;
 
+  if ( ogrDriverName == "MapInfo File" )
+  {
+    // adding attributes in mapinfo requires to be able to delete the .dat file
+    // so drop any cached connections.
+    QgsOgrConnPool::instance()->invalidateConnections( filePath() );
+  }
+
   bool returnvalue = true;
 
   for ( QList<QgsField>::const_iterator iter = attributes.begin(); iter != attributes.end(); ++iter )
