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From "Michael Watzek (JIRA)" <j...@apache.org>
Subject [jira] Created: (JDO-169) JPOX generates wrong SQL statements navigating relationships in JDO queries
Date Wed, 05 Oct 2005 14:00:11 GMT
JPOX generates wrong SQL statements navigating relationships in JDO queries
---------------------------------------------------------------------------

         Key: JDO-169
         URL: http://issues.apache.org/jira/browse/JDO-169
     Project: JDO
        Type: Improvement
  Components: tck20  
    Reporter: Michael Watzek
 Assigned to: Erik Bengtson 


This bug shows up in (at least) two test cases: NavigationThroughANullValuedField and NavigationThroughReferencesUsesDotOperator.

Both test cases run the following JDO query: SELECT FROM Employee WHERE medicalInsurance.carrier
== \"Carrier1\".

JPOX generates the following SQL:

SELECT THIS.DISCRIMINATOR,THIS.BIRTHDATE,THIS.FIRSTNAME,THIS.LASTNAME,THIS.PERSONID,THIS.HIREDATE,THIS.WEEKLYHOURS
FROM applicationidentity0.PERSONS THIS LEFT OUTER JOIN applicationidentity0.INSURANCEPLANS
RELATED14 ON RELATED14.EMPLOYEE = THIS.PERSONID WHERE (THIS.DISCRIMINATOR = 'org.apache.jdo.tck.pc.company.Employee'
OR THIS.DISCRIMINATOR = 'org.apache.jdo.tck.pc.company.PartTimeEmployee' OR THIS.DISCRIMINATOR
= 'org.apache.jdo.tck.pc.company.FullTimeEmployee') AND RELATED14.CARRIER = 'Carrier1'

The WHERE clause of this SQL statement misses a discriminator comparison for the navigated
relationship: 

AND RELATED14.DISCRIMINATOR = 'org.apache.jdo.tck.pc.company.MedicalInsurance'

Once, the patch of JDO-168 has been checked in the test cases mentioned above fail due to
this reason.


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