OpenJPA getSingleResult weirdness -


a have 2 entities: report , reportsection bound onetomany relation. usually, each report contains more 1 sections.

i use openjpa 2.2.1 , started encountering error when trying fetch specific report while eagerly loading sections well. 

em.createnamedquery("report.findsinglewithsections").setparameter("id", id).getsingleresult();

where report.findsinglewithsections is:

select r report r left join r.sections s r.id = :id;

what expect: single report object fetched , sections.

what get: nouniqueresultexception exception

i querying done via primary key, there no possibility double records exist in database.

if change getsingleresult getresultlist 1 (report -> reportsection) each pair is, far know, not correct behavior.

is known bug or doing wrong here? hint helpful


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