[jira] [Created] (JENA-458) Make model work across transaction boundaries / make model.begin do something reasonable.

["Andy Seaborne (JIRA)" <ji...@apache.org>]

Andy Seaborne created JENA-458:
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             Summary: Make model work across transaction boundaries / make model.begin do something reasonable.
                 Key: JENA-458
                 URL: https://issues.apache.org/jira/browse/JENA-458
             Project: Apache Jena
          Issue Type: Improvement
          Components: TDB
    Affects Versions: TDB 0.10.1
            Reporter: Andy Seaborne
            Priority: Minor


Currently, the model view must be re-feteched from the TDB dataset across transaction boundaries even if all updates went via the model.

For some models, this is expensive - for example, inference models with significant forward chaining.

A problem will always be that if the database can change via a different route.

A side-effect will be that model.begin()/model.commit()/model.abort() can be implemented as always being a write transaction.  It would need an API change to support the difference between read and write.


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