DDC-2660: ResultSetMappingBuilder hydration associationMappings identifiers

[doctrinebot]

Jira issue originally created by user yokoloko:

When you try to create a resultsetmappingbuilder for an entity with composite id made of associations. The result is not what we expect.

eg : SELECT o.product_id, o.customer_id FROM customer_order o

[doctrinebot]

Comment created by yokoloko:

It's easier to understand with a testcase, the problem is in the addAllClassFields method that for association mapping call the addMetaResult without saying if the column is an identifier or not

[doctrinebot]

Comment created by @beberlei:

Fixed and merged into 2.4 and 2.3 release branches.

[doctrinebot]

Issue was closed with resolution "Fixed"