Topology entity with placeholder version is only needed to create fresh new topology because topology id doesn't exist at that time but topology version requires topology id.
addTopology method is also called for saving new version of topology, and in this case creating and deleting placeholder is not needed at all.
We can reduce two DMLs for each saving version of topology.
HeartSaVioR
commented
7 years ago
Topology entity with placeholder version is only needed to create fresh new topology because topology id doesn't exist at that time but topology version requires topology id.
addTopologymethod is also called for saving new version of topology, and in this case creating and deleting placeholder is not needed at all.We can reduce two DMLs for each saving version of topology.