Field calculator: insert NULL feature value in case of calculation error (instead of stopping and reverting calculation for all features)

git-svn-id: http://svn.osgeo.org/qgis/trunk@14369 c8812cc2-4d05-0410-92ff-de0c093fc19c

Author: mhugent

src/app/qgsfieldcalculator.cpp

@@ -145,7 +145,6 @@ void QgsFieldCalculator::accept()
 
     //go through all the features and change the new attribute
     QgsFeature feature;
-    bool calculationSuccess = true;
 
     bool onlySelected = ( mOnlyUpdateSelectedCheckBox->checkState() == Qt::Checked );
     QgsFeatureIds selectedIds = mVectorLayer->selectedFeaturesIds();
@@ -173,10 +172,10 @@ void QgsFieldCalculator::accept()
       searchTree->getValue( value, searchTree, mVectorLayer->pendingFields(), feature );
       if ( value.isError() )
       {
-        calculationSuccess = false;
-        break;
+        //insert NULL value for this feature and continue the calculation
+        mVectorLayer->changeAttributeValue( feature.id(), attributeId, QVariant(), false );
       }
-      if ( value.isNumeric() )
+      else if ( value.isNumeric() )
       {
         mVectorLayer->changeAttributeValue( feature.id(), attributeId, value.number(), false );
       }
@@ -191,18 +190,6 @@ void QgsFieldCalculator::accept()
     // stop blocking layerModified signals and make sure that one layerModified signal is emitted
     mVectorLayer->blockSignals( false );
     mVectorLayer->setModified( true, false );
-
-
-    if ( !calculationSuccess )
-    {
-      QMessageBox::critical( 0, tr( "Error" ), tr( "An error occured while evaluating the calculation string." ) );
-
-      //remove new attribute
-      mVectorLayer->deleteAttribute( attributeId );
-      mVectorLayer->destroyEditCommand();
-      return;
-    }
-
     mVectorLayer->endEditCommand();
   }
   QDialog::accept();