Re: [eclipselink-users] No merging with CascadeType.ALL set

[Christopher Delahunt <christopher.delahunt@xxxxxxxxxx>]

Hello,

They should be merged.  Can you elaborate on why you believe they are not merged?  What does em.contains() on a member of the entries collection return after the merge (using the returned and managed Schedule of course).

Best Regards,
Chris


----- Original Message -----
From: michael.simons@xxxxxxxxxxx
To: eclipselink-users@xxxxxxxxxxx
Sent: Wednesday, December 30, 2009 8:35:22 AM GMT -05:00 US/Canada Eastern
Subject: [eclipselink-users] No merging with CascadeType.ALL set

Hello,

I'v got two classes
@Entity class Schedule {
  @OneToMany(cascade=CascadeType.ALL, fetch=FetchType.LAZY, mappedBy="schedule")
  private Set<ScheduleEntry> entries = new HashSet<ScheduleEntry> (17);
  ...
}

@Entity class ScheduleEntry {
  @ManyToOne(fetch=FetchType.LAZY) @JoinColumn(name="schedule_id", nullable=false)
  private Schedule schedule;
  ...
}

So I'd expect when em.merge() is called on a Schedule instance, the contained entries are also
merged. But this is not the case.

Do I misunderstand the idea behind CascadeType.MERGE (and CascadeType.ALL, of course) or might
this be an issue of EclipseLink?

(We're using EclipseLink 1.2.0 in a Java SE Application)

- michael
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