private void MergeFeatures(IFeature featureToMergeTo, IFeature feature)
{
if (featureToMergeTo.Attributes[FeatureAttributes.ID].Equals(feature.Attributes[FeatureAttributes.ID]))
{
return;
}
if (featureToMergeTo.Geometry is GeometryCollection geometryCollection)
{
if (feature.Geometry is GeometryCollection geometryCollectionSource)
{
featureToMergeTo.Geometry = _geometryFactory.CreateGeometryCollection(geometryCollection.Geometries.Concat(geometryCollectionSource.Geometries).ToArray());
}
else
{
featureToMergeTo.Geometry = _geometryFactory.CreateGeometryCollection(geometryCollection.Geometries.Concat(new[] { feature.Geometry }).ToArray());
}
}
else
{
featureToMergeTo.Geometry = _geometryFactory.CreateGeometryCollection(new[] { featureToMergeTo.Geometry, feature.Geometry });
}
if (featureToMergeTo.Attributes[FeatureAttributes.POI_CATEGORY].Equals(Categories.NONE))
{
featureToMergeTo.Attributes[FeatureAttributes.POI_CATEGORY] =
feature.Attributes[FeatureAttributes.POI_CATEGORY];
}
if (double.Parse(featureToMergeTo.Attributes[FeatureAttributes.SEARCH_FACTOR].ToString()) <
double.Parse(feature.Attributes[FeatureAttributes.SEARCH_FACTOR].ToString()))
{
featureToMergeTo.Attributes[FeatureAttributes.SEARCH_FACTOR] =
feature.Attributes[FeatureAttributes.SEARCH_FACTOR];
}
if (string.IsNullOrWhiteSpace(featureToMergeTo.Attributes[FeatureAttributes.ICON].ToString()))
{
featureToMergeTo.Attributes[FeatureAttributes.ICON] =
feature.Attributes[FeatureAttributes.ICON];
featureToMergeTo.Attributes[FeatureAttributes.ICON_COLOR] =
feature.Attributes[FeatureAttributes.ICON_COLOR];
}
// adding names of merged feature
featureToMergeTo.MergeTitles(feature);
if (!featureToMergeTo.Attributes[FeatureAttributes.POI_SOURCE]
.Equals(feature.Attributes[FeatureAttributes.POI_SOURCE]) ||
!feature.Attributes[FeatureAttributes.POI_SOURCE].Equals(Sources.OSM))
{
// do not merge OSM elements to each other since they won't exists in the database for fetching
featureToMergeTo.AddIdToCombinedPoi(feature);
}
featureToMergeTo.MergeCombinedPoiIds(feature);
}