Pawel Veselov created OPENJPA-2769:
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Summary: For some queries, parameters are not found
Key: OPENJPA-2769
URL: https://issues.apache.org/jira/browse/OPENJPA-2769
Project: OpenJPA
Issue Type: Bug
Components: kernel
Affects Versions: 2.4.2
Reporter: Pawel Veselov
Attachments: temp.jsp
I build a rather simple query using criteria API. I use the query a few times,
there are no problems.
I then re-use the query in another transaction, and get an error "declared
parameters were not given values". Of course the values were given.
So far I traced it to
QueryImpl.assertParameters(StoreQuery, StoreQuery.Executor, java.util.Map) gets
ordered parameter type map from the executor. That map should contain keys of
type "ParameterExpression", but it instead contains keys of type String (with
the correct parameter names and values, though).
I don't know how those keys get there, by the time assertParameters() is
executed, there are already there, and they are like 3 objects deep. I don't
understand when are these objects updated, and which one is updated, and what
can the reasons be.
There are a few requirements:
# Criteria query must be used twice in one transaction
# A parameter value of null must have been used first
There may be other combinations, but certainly if you use it with null, then
with not null, then use it again in the next transaction, something happens
with the internal structure. When joins where used, I saw even parser errors.
Code is attached. Sorry for the JSP, it makes it easier for me to run JPA code
in a server.
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