Mark Struberg created OPENJPA-2764:
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Summary: Map path expression tests behave random
Key: OPENJPA-2764
URL: https://issues.apache.org/jira/browse/OPENJPA-2764
Project: OpenJPA
Issue Type: Bug
Components: build / infrastructure
Affects Versions: 3.0.0
Reporter: Mark Struberg
Assignee: Mark Struberg
Fix For: 3.0.1
Most of the tests under org.apache.openjpa.persistence.jdbc.maps behave random
when they test against a real database.
Those tests capture the JQPL path navigation for Maps (Covered in the spec in
4.4.4.1).
{code}
public class @Entity Division {
private Map<Division, VicePresident> orga;
}
{code}
Such structures can be navitated via KEY(), VALUE(), and ENTRY().
Our tests did create 2 Divisions with 2 orga entries. And using
{{query.getResultList().get(0)}} to verify the results. And this was exactly
the problem. using {{get(0)}} leads to random behaviour with real databases. On
the default Derby database it didn't make any difference as the result from the
index query was always in the order in which the data got written to disk. But
this is not guaranteed for performance tuned databases like PostgreSQL, MariaDB
and MySQL. In those cases we got random errors.
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