On Nov 5, 2007, at 12:44 PM, Patrick Linskey wrote:

I'm a newbie, so I don't quite grok the question.  Show itself
doesn't have any references to InputFile.

Aha! IIRC, @ManyToOne is only meaningful when used as the back side of
a @OneToMany.

We don't have that.  There are reasons, and its intentional.


What happens if you just use a @OneToOne instead of the @ManyToOne?

The problem is that it's not OneToOne


-Patrick

On Nov 5, 2007 9:16 AM, Geir Magnusson Jr. <[EMAIL PROTECTED]> wrote:

On Nov 5, 2007, at 11:48 AM, Patrick Linskey wrote:

Hi,

What does the other side of the relation look like?

I'm a newbie, so I don't quite grok the question.  Show itself
doesn't have any references to InputFile.

Also, what does
the Show class look like?

in what way?  Show is a subclass in a JOINED inheritance strategy, if
that makes any difference.

geir




-Patrick

On Nov 5, 2007 8:08 AM, Geir Magnusson Jr. <[EMAIL PROTECTED]> wrote:
I'm a newbie, so forgive me if I'm not asking the question the right
way.

I have a join table in my DB :

+-------------+------------------+------+-----+---------+-------+
| Field       | Type             | Null | Key | Default | Extra |
+-------------+------------------+------+-----+---------+-------+
| showId      | int(11) unsigned | NO   | PRI |         |       |
| inputFileId | int(11) unsigned | NO   | PRI |         |       |
+-------------+------------------+------+-----+---------+-------+

where showId and inputFileID are PKs in the show table and inputfile
table.

In my code for the InputFile class :

     @ManyToOne
     @JoinTable(name="Show2InputFile",
             joinColumns = @JoinColumn(name="inputFileId"),
             inverseJoinColumns = @JoinColumn(name="showId"))
     public Show getShow() {
         return show;
     }

When JPA is instrumenting my classes, it complains :

Caused by: <openjpa-1.1.0-SNAPSHOT-r420667:588533 fatal user error>
org.apache.openjpa.persistence.ArgumentException: You have supplied
columns for "com.joost.model.logistics.InputFile.show<element:class
java.lang.Object>", but this mapping cannot have columns in this
context.


I don't quite understand the error. I use this same thing elsewhere
(I think) w/o a problem.  Can someone give me a hint?

geir







--
Patrick Linskey
202 669 5907





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Patrick Linskey
202 669 5907

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