Vermeulen created OPENJPA-2239:
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Summary: removing from one List<X> removes all from other List<X>
in same entity
Key: OPENJPA-2239
URL: https://issues.apache.org/jira/browse/OPENJPA-2239
Project: OpenJPA
Issue Type: Bug
Components: kernel
Affects Versions: 2.1.1
Reporter: Vermeulen
I have an Order entity that has two separate lists of OrderLine entities:
...
@OneToMany(cascade = CascadeType.ALL, fetch = FetchType.EAGER)
private List<OrderLine> plannedOrderLines = new ArrayList<OrderLine>();
@OneToMany(cascade = CascadeType.ALL, fetch = FetchType.EAGER)
private List<OrderLine> actualOrderLines = new ArrayList<OrderLine>();
...
I remove a single element from actualOrderLines, then merge the entity and
close the entity manager. When I find the entity again with a different entity
manager, the plannedOrderLines list is empty.
OpenJPA generates one join table that contains entries for both lists. I used
this configuration for a long time and it seems to work fine except for this
bug. I verified in the database that the entries for planned order lines are
all removed from the join table.
Workaround: use @JoinTable or @JoinColumn annotation so that both lists do not
map to the same join table.
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