QgsVectorLayer::featureAtId() - use the same semantics as QgsVectorDataProvider::featureAtId()

i.e. return true on success


git-svn-id: http://svn.osgeo.org/qgis/trunk/qgis@9620 c8812cc2-4d05-0410-92ff-de0c093fc19c

Author: wonder

python/core/qgsvectorlayer.sip

@@ -166,8 +166,8 @@ public:
 
 
   /**Gets the feature at the given feature id. Considers the changed, added, deleted and permanent features
-   @return 0 in case of success*/
-  int featureAtId(int featureId, QgsFeature& f, bool fetchGeometries = true, bool fetchAttributes = true);
+   @return true in case of success*/
+  bool featureAtId(int featureId, QgsFeature& f, bool fetchGeometries = true, bool fetchAttributes = true);
 
   /** Adds a feature
       @param alsoUpdateExtent    If True, will also go to the effort of e.g. updating the extents.

src/app/qgsmaptoolidentify.cpp

@@ -451,7 +451,7 @@ void QgsMapToolIdentify::highlightFeature( int featureId )
   mRubberBand = 0;
 
   QgsFeature feat;
-  if ( layer->featureAtId( featureId, feat, true, false ) != 0 )
+  if ( ! layer->featureAtId( featureId, feat, true, false ) )
   {
     return;
   }

src/core/qgsvectorlayer.cpp

@@ -1301,13 +1301,13 @@ bool QgsVectorLayer::nextFeature( QgsFeature &f )
   return false;
 }
 
-int QgsVectorLayer::featureAtId( int featureId, QgsFeature& f, bool fetchGeometries, bool fetchAttributes )
+bool QgsVectorLayer::featureAtId( int featureId, QgsFeature& f, bool fetchGeometries, bool fetchAttributes )
 {
   if ( !mDataProvider )
-    return 1;
+    return false;
 
   if ( mDeletedFeatureIds.contains( featureId ) )
-    return 2;
+    return false;
 
   if ( fetchGeometries && mChangedGeometries.contains( featureId ) )
   {
@@ -1359,7 +1359,7 @@ int QgsVectorLayer::featureAtId( int featureId, QgsFeature& f, bool fetchGeometr
       if ( fetchAttributes )
         f.setAttributeMap( iter->attributeMap() );
 
-      return 0;
+      return true;
     }
   }
 
@@ -1369,17 +1369,17 @@ int QgsVectorLayer::featureAtId( int featureId, QgsFeature& f, bool fetchGeometr
     if ( mDataProvider->featureAtId( featureId, f, fetchGeometries, mDataProvider->attributeIndexes() ) )
     {
       updateFeatureAttributes( f );
-      return 0;
+      return true;
     }
   }
   else
   {
     if ( mDataProvider->featureAtId( featureId, f, fetchGeometries, QgsAttributeList() ) )
     {
-      return 0;
+      return true;
     }
   }
-  return 3;
+  return false;
 }
 
 bool QgsVectorLayer::addFeature( QgsFeature& f, bool alsoUpdateExtent )

src/core/qgsvectorlayer.h

@@ -225,8 +225,8 @@ class CORE_EXPORT QgsVectorLayer : public QgsMapLayer
     bool nextFeature( QgsFeature& feature );
 
     /**Gets the feature at the given feature id. Considers the changed, added, deleted and permanent features
-     @return 0 in case of success*/
-    int featureAtId( int featureId, QgsFeature &f, bool fetchGeometries = true, bool fetchAttributes = true );
+     @return true in case of success*/
+    bool featureAtId( int featureId, QgsFeature &f, bool fetchGeometries = true, bool fetchAttributes = true );
 
     /** Adds a feature
         @param lastFeatureInBatch  If True, will also go to the effort of e.g. updating the extents.