void QgsVectorLayerFeatureIterator::useChangedAttributeFeature( QgsFeatureId fid, const QgsGeometry& geom, QgsFeature& f )
{
f.setFeatureId( fid );
f.setValid( true );
f.setFields( &L->mUpdatedFields );
if ( !( mRequest.flags() & QgsFeatureRequest::NoGeometry ) )
f.setGeometry( geom );
bool subsetAttrs = ( mRequest.flags() & QgsFeatureRequest::SubsetOfAttributes );
if ( !subsetAttrs || ( subsetAttrs && mRequest.subsetOfAttributes().count() > 0 ) )
{
// retrieve attributes from provider
QgsFeature tmp;
//mDataProvider->featureAtId( fid, tmp, false, mFetchProvAttributes );
QgsFeatureRequest request;
request.setFilterFid( fid ).setFlags( QgsFeatureRequest::NoGeometry ).setSubsetOfAttributes( mProviderRequest.subsetOfAttributes() );
QgsFeatureIterator fi = L->dataProvider()->getFeatures( request );
if ( fi.nextFeature( tmp ) )
{
updateChangedAttributes( tmp );
f.setAttributes( tmp.attributes() );
}
}
if ( !mFetchJoinInfo.isEmpty() )
addJoinedAttributes( f );
}
void QgsVectorLayerFeatureIterator::useAddedFeature( const QgsFeature& src, QgsFeature& f )
{
f.setFeatureId( src.id() );
f.setValid( true );
f.setFields( &L->mUpdatedFields );
if ( src.geometry() && !( mRequest.flags() & QgsFeatureRequest::NoGeometry ) )
{
f.setGeometry( *src.geometry() );
// simplify the edited geometry using its simplifier configured
if ( mEditGeometrySimplifier )
{
QgsGeometry* geometry = f.geometry();
QGis::GeometryType geometryType = geometry->type();
if ( geometryType == QGis::Line || geometryType == QGis::Polygon ) mEditGeometrySimplifier->simplifyGeometry( geometry );
}
}
// TODO[MD]: if subset set just some attributes
f.setAttributes( src.attributes() );
if ( !mFetchJoinInfo.isEmpty() )
addJoinedAttributes( f );
}
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;
}
void QgsVectorLayerFeatureIterator::useAddedFeature( const QgsFeature& src, QgsFeature& f )
{
f.setFeatureId( src.id() );
f.setValid( true );
f.setFields( &L->mUpdatedFields );
if ( src.geometry() && !( mRequest.flags() & QgsFeatureRequest::NoGeometry ) )
f.setGeometry( *src.geometry() );
// TODO[MD]: if subset set just some attributes
f.setAttributes( src.attributes() );
if ( !mFetchJoinInfo.isEmpty() )
addJoinedAttributes( f );
}
void QgsVectorLayerFeatureIterator::useChangedAttributeFeature( QgsFeatureId fid, const QgsGeometry& geom, QgsFeature& f )
{
f.setFeatureId( fid );
f.setValid( true );
f.setFields( &L->mUpdatedFields );
if ( !( mRequest.flags() & QgsFeatureRequest::NoGeometry ) )
{
f.setGeometry( geom );
// simplify the edited geometry using its simplifier configured
if ( mEditGeometrySimplifier )
{
QgsGeometry* geometry = f.geometry();
QGis::GeometryType geometryType = geometry->type();
if ( geometryType == QGis::Line || geometryType == QGis::Polygon ) mEditGeometrySimplifier->simplifyGeometry( geometry );
}
}
bool subsetAttrs = ( mRequest.flags() & QgsFeatureRequest::SubsetOfAttributes );
if ( !subsetAttrs || ( subsetAttrs && mRequest.subsetOfAttributes().count() > 0 ) )
{
// retrieve attributes from provider
QgsFeature tmp;
//mDataProvider->featureAtId( fid, tmp, false, mFetchProvAttributes );
QgsFeatureRequest request;
request.setFilterFid( fid ).setFlags( QgsFeatureRequest::NoGeometry );
if ( subsetAttrs )
{
request.setSubsetOfAttributes( mProviderRequest.subsetOfAttributes() );
}
QgsFeatureIterator fi = L->dataProvider()->getFeatures( request );
if ( fi.nextFeature( tmp ) )
{
updateChangedAttributes( tmp );
f.setAttributes( tmp.attributes() );
}
}
if ( !mFetchJoinInfo.isEmpty() )
addJoinedAttributes( f );
}
bool QgsVectorLayerFeatureIterator::nextFeatureFid( QgsFeature& f )
{
QgsFeatureId featureId = mRequest.filterFid();
// deleted already?
if ( mDeletedFeatureIds.contains( featureId ) )
return false;
// has changed geometry?
if ( !( mRequest.flags() & QgsFeatureRequest::NoGeometry ) && mChangedGeometries.contains( featureId ) )
{
useChangedAttributeFeature( featureId, mChangedGeometries[featureId], f );
return true;
}
// added features
for ( QgsFeatureMap::ConstIterator iter = mAddedFeatures.constBegin(); iter != mAddedFeatures.constEnd(); ++iter )
{
if ( iter->id() == featureId )
{
useAddedFeature( *iter, f );
return true;
}
}
// regular features
QgsFeatureIterator fi = L->dataProvider()->getFeatures( mProviderRequest );
if ( fi.nextFeature( f ) )
{
updateChangedAttributes( f );
if ( !mFetchJoinInfo.isEmpty() )
addJoinedAttributes( f );
return true;
}
return false;
}
