Questions for discovery

• How to measure? JCR queries don't provide aggregation functions. Iterating of a result set or the items of the workspace is likely not efficient and adds to much load to the instance. One way is a JCR query:

  QueryResult result = queryManager.createQuery("SELECT * FROM [nt:base]", Query.JCR_SQL2).execute();
  long nodeCount = result.getRows().getSize(); 

  However, this might still have an impact on the instance as it collects all results into a list internally in Jackrabbit.

• Can and should we track this number separately. Risk of getting out of sync?

Discovery notes

• We could look up the WorkspaceStats MBean from info.magnolia.types.datasource.jcr.JackrabbitInitializer#initialize and set the node type attribute for the workspace. Both are available from the ContentTypeDefinition.
• The approach with looking up a WorkspaceStatsConfigurer instance via the service loader cannot be used since the name of the workspace is only known at the time the module starts.