Richard Zowalla created OPENJPA-3050:
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Summary: In-memory arithmetic treats NULL as 0
Key: OPENJPA-3050
URL: https://issues.apache.org/jira/browse/OPENJPA-3050
Project: OpenJPA
Issue Type: Bug
Reporter: Richard Zowalla
When a query is evaluated in memory (for example over a candidate collection),
arithmetic with a NULL operand returns a number instead of NULL. {{Filters.op}}
treats null as 0, so {{-n.intB}} or {{0 - n.intB}} with {{intB = null}} gives 0
in memory, while the database returns NULL. The same applies to {{+}}, {{*}}
and {{/}}, and to the in-memory bulk update path in {{JDBCStoreQuery}}, which
also calls {{Filters.op}}.
Found while working on OPENJPA-3044.
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