make Clip tool work with SpatiaLite layers (fix #4571)

alexbruy · alexbruy · commit 7200ea23f1ac · 2012-05-23T16:38:53.000+03:00
diff --git a/python/plugins/fTools/tools/doGeoprocessing.py b/python/plugins/fTools/tools/doGeoprocessing.py
@@ -1351,15 +1351,18 @@ def clip( self ):
     else:
         crs_match = crsA == crsB
     fields = vproviderA.fields()
-    writer = QgsVectorFileWriter( self.myName, self.myEncoding,
-    fields, vproviderA.geometryType(), vproviderA.crs() )
+    writer = QgsVectorFileWriter( self.myName, self.myEncoding, fields,
+                                  vproviderA.geometryType(), vproviderA.crs() )
     if writer.hasError():
       return GEOS_EXCEPT, FEATURE_EXCEPT, crs_match, writer.errorMessage()
     inFeatA = QgsFeature()
     inFeatB = QgsFeature()
     outFeat = QgsFeature()
     index = ftools_utils.createIndex( vproviderB )
     vproviderA.rewind()
+    vproviderA.select( allAttrsA )
+    vproviderB.rewind()
+    vproviderB.select( allAttrsB )
     nElement = 0
     # there is selection in input layer
     if self.mySelectionA:
