Map.put() can destroy other objects' maps

Question

Hi,
I assign a new value to an already existing key in a map:
map.put(key1, value1);
map.put(key1, value2);
While still ok in memory, the state of many maps in the database becomes
invalid.
The statement that Kodo logs is the following:
UPDATE JUNIT.MAPWI_MAP SET JDOID = ?, JDOID_VALUE = ? WHERE JDOID_KEY
= ?
Instead of just changing the value in the map's table, Kodo also changes
the owner.
I think the following statement would be correct:
UPDATE JUNIT.MAPWI_MAP SET JDOID_VALUE = ? WHERE JDOID_KEY = ? AND
JDOID = ?
A workaround is to check if a key is already in a map and removing it
before assigning it a new value. That way Kodo makes "delete" + "insert"
instead of "update".
We use Kodo 3.0.0 on Oracle.
--Wolfgang

Answer 1

Thank you very much for this bug report. We've fixed the problem
internally; 3.0.1 will include the fix.