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https://issues.apache.org/jira/browse/JENA-1223?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15499371#comment-15499371
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ASF GitHub Bot commented on JENA-1223:
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Github user afs commented on the issue:
https://github.com/apache/jena/pull/170
This first part of the PR is for JENA-1237.
> 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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