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Fix #12139 - added features saved in reversed order

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This commit is contained in:
Martin Dobias 2015-02-18 13:53:35 +07:00
parent 8ee8fc54d9
commit d8083b96ef
1 changed files with 19 additions and 2 deletions
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21
src/core/qgsvectorlayereditbuffer.cpp
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@ -21,6 +21,20 @@
#include "qgsvectorlayer.h"
//! populate two lists (ks, vs) from map - in reverse order
template <class Key, class T> void mapToReversedLists( const QMap< Key, T >& map, QList<Key>& ks, QList<T>& vs )
{
ks.reserve( map.size() );
vs.reserve( map.size() );
typename QMap<Key, T>::const_iterator i = map.constEnd();
while ( i-- != map.constBegin() )
{
ks.append( i.key() );
vs.append( i.value() );
}
}
QgsVectorLayerEditBuffer::QgsVectorLayerEditBuffer( QgsVectorLayer* layer )
: L( layer )
{
@ -425,8 +439,11 @@ bool QgsVectorLayerEditBuffer::commitChanges( QStringList& commitErrors )
{
if ( cap & QgsVectorDataProvider::AddFeatures )
{
QList<QgsFeatureId> ids = mAddedFeatures.keys();
QgsFeatureList featuresToAdd = mAddedFeatures.values();
QList<QgsFeatureId> ids;
QgsFeatureList featuresToAdd;
// get the list of added features in reversed order
// this will preserve the order how they have been added e.g. (-1, -2, -3) while in the map they are ordered (-3, -2, -1)
mapToReversedLists( mAddedFeatures, ids, featuresToAdd );
if ( provider->addFeatures( featuresToAdd ) )
{