Re: How to map multiple properties to same column as writable in jpa

[Craig L Russell]

Hi Saravanan,

The code snippet below doesn't look like the source of the problem.



Regards,

Craig

On Jul 26, 2007, at 9:28 PM, saravanan_tvm wrote:

Perhaps you could post all of the annotations for the fields in question? And try using OpenJPA...

Hi,
I am using toplink from oracle to support JPA.
I have the following requirement...
i have to map same column for multiple properties using @joincolumn
annotation.. eg its something like this

@joincolumn(name="PARENT_RECORD_ID")
private Drug drug

@joincolumn(name="PARENT_RECORD_ID")
private Reaction reaction

PARENT_RECORD_ID is nothing but primary key of parent table.


 MULTIPLE_WRITE_MAPPINGS_FOR_FIELD


during the validation process of descriptors.

Action: Make one of those mappings read-only


records it will be problem

please can anyone provide the solution for this...
Regards,
Saravanan.

--

but while accessing the application i am getting the following exception.... Cause: Multiple writable mappings for the field fieldName are defined in the descriptor. Exactly one must be defined as writable; the others must be specified as read-only. When multiple write mappings are defined for the field, TopLink is unable to choose the appropriate mapping for writing the value of the field in the database row. Therefore, the exception is raised But i cannot make read only, if i make read only then while inserting new View this message in context: http://www.nabble.com/How-to-map- multiple-properties-to-same-column-as-writable-in-jpa- tf4155235.html#a11822480

Sent from the OpenJPA Developers mailing list archive at Nabble.com.

Craig Russell
Architect, Sun Java Enterprise System http://java.sun.com/products/jdo
408 276-5638 mailto:[EMAIL PROTECTED]
P.S. A good JDO? O, Gasp!

smime.p7s
Description: S/MIME cryptographic signature