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Report 1 2018-11-22
Running against latest Datomic Free transactor 0.9.5703 (but same issue shows
when running against lastest Datomic Pro version 0.9.5786 too).
Details
Two issues show up, but they might be somewhat related.
Suppose that a database function is used to ensure correct atomic updates. Such
a generic function could, for instance, take a query and arguments for a query
as function arguments. Based on the query results, the function may allow the
transaction or throw.
Using such a function, we discover two issues:
not
clause behave unexpectedly.or
clause break.See src/datomic_bug_report/core.clj for
example.
Since neither issue manifests when using the Datomic in-memory database, it
seems that the underlying cause might be something related to serialization on
the wire.