bool QgsVectorLayerFeatureIterator::nextFeature( QgsFeature& f )
{
f.setValid( false );
if ( mClosed )
return false;
if ( mRequest.filterType() == QgsFeatureRequest::FilterFid )
{
if ( mFetchedFid )
return false;
bool res = nextFeatureFid( f );
mFetchedFid = true;
return res;
}
if ( mRequest.filterType() == QgsFeatureRequest::FilterRect )
{
if ( fetchNextChangedGeomFeature( f ) )
return true;
// no more changed geometries
}
if ( fetchNextAddedFeature( f ) )
return true;
// no more added features
while ( mProviderIterator.nextFeature( f ) )
{
if ( mFetchConsidered.contains( f.id() ) )
continue;
// TODO[MD]: just one resize of attributes
f.setFields( &L->mUpdatedFields );
// update attributes
updateChangedAttributes( f );
if ( !mFetchJoinInfo.isEmpty() )
addJoinedAttributes( f );
// update geometry
if ( !( mRequest.flags() & QgsFeatureRequest::NoGeometry ) )
updateFeatureGeometry( f );
return true;
}
close();
return false;
}
bool QgsVectorLayerFeatureIterator::fetchFeature( QgsFeature& f )
{
f.setValid( false );
if ( mClosed )
return false;
if ( mRequest.filterType() == QgsFeatureRequest::FilterFid )
{
if ( mFetchedFid )
return false;
bool res = nextFeatureFid( f );
mFetchedFid = true;
return res;
}
if ( mRequest.filterType() == QgsFeatureRequest::FilterRect )
{
if ( fetchNextChangedGeomFeature( f ) )
return true;
// no more changed geometries
}
if ( mRequest.filterType() == QgsFeatureRequest::FilterExpression )
{
if ( fetchNextChangedAttributeFeature( f ) )
return true;
// no more changed features
}
while ( fetchNextAddedFeature( f ) )
{
return true;
}
// no more added features
if ( mProviderIterator.isClosed() )
{
mChangedFeaturesIterator.close();
mProviderIterator = mSource->mProviderFeatureSource->getFeatures( mProviderRequest );
}
while ( mProviderIterator.nextFeature( f ) )
{
if ( mFetchConsidered.contains( f.id() ) )
continue;
// TODO[MD]: just one resize of attributes
f.setFields( &mSource->mFields );
// update attributes
updateChangedAttributes( f );
addVirtualAttributes( f );
// update geometry
// TODO[MK]: FilterRect check after updating the geometry
if ( !( mRequest.flags() & QgsFeatureRequest::NoGeometry ) )
updateFeatureGeometry( f );
return true;
}
// no more provider features
close();
return false;
}
