ASF GitHub Bot commented on JENA-1223:

GitHub user afs opened a pull request:


    JENA-1223: Txn promotion for TIM (includes patch for JENA-1237)

    Machinery for transaction promotion for the in-memory transactional dataset.

You can merge this pull request into a Git repository by running:

    $ git pull https://github.com/afs/jena promote-mem

Alternatively you can review and apply these changes as the patch at:


To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:

    This closes #170
commit cc2c4bd54c15b958dede6b4e83e6ee440a3157c8
Author: Andy Seaborne <a...@apache.org>
Date:   2016-09-17T15:51:25Z

    JENA-1237: Capture transaction snapshot during begin.

commit f9f2870e29fd1ac51c49740a42f6fbb644b7616d
Author: Andy Seaborne <a...@apache.org>
Date:   2016-09-17T16:02:50Z

    Clean up.

commit 51175d27768955ed1918b79ea7f046723e5c3173
Author: Andy Seaborne <a...@apache.org>
Date:   2016-09-17T16:03:31Z

    JENA-1237: Tests (TDB and TIM)


> Provide transaction promotion
> -----------------------------
>                 Key: JENA-1223
>                 URL: https://issues.apache.org/jira/browse/JENA-1223
>             Project: Apache Jena
>          Issue Type: Improvement
>          Components: TDB
>    Affects Versions: Jena 3.1.0
>            Reporter: Andy Seaborne
> This JIRA is to add the ability for a read transaction to promote to a write 
> transaction.
> API changes are necessary to expose this feature properly and uniformly.
> PR #161 provides the machinery for TDB. To avoid general API changes outside 
> TDB, this happens automatically in {{DatasetGraphTransaction.getW()}} if 
> enabled (by default it isn't, the PR makes no change to behaviour of TDB by 
> default).  It needs to be enabled with {{DatasetGraphTransaction.promotion = 
> true}}. PR#161 does contain internal changes (e.g. {{DatasetGraphWrapper}}) 
> outside TDB.
> This leads towards a general {{begin()}} for transactions. 
> This JIRA is cover discussion on the API and record changes to the subsystems.

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