Introduction:
Hierarchy APIs is for creating, updating or reading the entire hierarchy of collection mimetypes. As part of refactoring hierarchy APIs, below are implementation changes.
Design:
UpdateHierarchy API:
Ontology Engine Changes
Introduce `mode=edit` in DataNode.update(), to upsert hierarchy to `rootId.img`
API changes
read rootnode -> If live fetch image node
construct new nodes and validate the same against schema
construct hierarchy
call dataNode.update() with `mode=edit`
GetHierarchy API:
if(mode == edit) {
DataNode.read() using rootNodeId with `mode=edit`
DataNode.read() with `mode=edit` and fields=hierarchy
merge the above responses and return
}
else {
get Hierarchy from redis
if(Hierarchy not present in redis){
DataNode.read() using rootNodeId and fields=hierarchy
if(Hierarchy is not present in cassandra)
throw ResourceNot Found
}
}