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https://issues.apache.org/jira/browse/JENA-1223?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15424834#comment-15424834
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Andy Seaborne commented on JENA-1223:
-------------------------------------
Other commits (they should have said 1223, as corrected here, but the commit
message says 1123):
Commit a22323cc9e343855a9b1fd773ef33b8764570dfd in jena's branch
refs/heads/master from Andy Seaborne
[ https://git-wip-us.apache.org/repos/asf?p=jena.git;h=a22323c ]
JENA-1223: Promotable TDB transactions.
Graphs across transaction boundaries.
Do not cache default model. Assumes too much about the DatasetGraph.
Switchable promotion. Select txn/non-txn graph versions
Commit 19ad899bbe490ecafbba8a5956ceaaa65945770a in jena's branch
refs/heads/master from Andy Seaborne
[ https://git-wip-us.apache.org/repos/asf?p=jena.git;h=19ad899 ]
JENA-1223: Settable promotion mode (development).
Commit f376803841e81f70a546226a09b37c57598bda91 in jena's branch
refs/heads/master from Andy Seaborne
[ https://git-wip-us.apache.org/repos/asf?p=jena.git;h=f376803 ]
JENA-1223: Tests for transaction promotion in TDB.
> 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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