Hi,
I'm trying to use a Key inside a query filter. I am using this to
enforce uniqueness on a field (GAE does not support unique
constraint) .
In my query I try to fetch from ser a user with same name as the
entered one, but with different key (if I get no result - user name is
not taken).
This approach works like wonders in the development environment, but
crashes and burns in the deployed environment.
I get an exception:
Nested in org.springframework.web.util.NestedServletException: Request
processing failed; nested exception is
javax.jdo.JDOFatalUserException: Illegal argument
NestedThrowables:
java.lang.IllegalArgumentException: __key__ filter value must be a
Key:
javax.jdo.JDOFatalUserException: Illegal argument
at
org.datanucleus.jdo.NucleusJDOHelper.getJDOExceptionForNucleusException
(NucleusJDOHelper.java:344)
at org.datanucleus.jdo.JDOQuery.execute(JDOQuery.java:275)...
again - this works in development environment.
any suggestions?
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