[jira] [Commented] (JENA-1469) GraphTxnTDB does not handle abort() properly

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

    [ https://issues.apache.org/jira/browse/JENA-1469?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16333645#comment-16333645 ] 

Andy Seaborne commented on JENA-1469:
-------------------------------------

This isn't directly related to graphs: it's an issue with TDB1 as illustrated by:

{noformat}
    public static void main(String ... a) {
        DatasetGraph dsg = TDBFactory.createDatasetGraph();
        // AbstractTestTransactionLifecycle
        //Txn.exec(dsg,  TxnType.READ_PROMOTE, ()->g.add( t ));
        dsg.begin(TxnType.READ_PROMOTE);
        dsg.promote();
        dsg.commit();
        dsg.end();
        dsg.begin(TxnType.WRITE);
        dsg.commit();
        dsg.end(); 
        System.out.println("Done");
        System.exit(0);
    }
{noformat}

Using {{DatasetGraphTransaction}} and {{GraphTxnTDB}} isn't a good idea - they are internal classes and have their own additional (and internal) contract.

> GraphTxnTDB does not handle abort() properly
> --------------------------------------------
>
>                 Key: JENA-1469
>                 URL: https://issues.apache.org/jira/browse/JENA-1469
>             Project: Apache Jena
>          Issue Type: Bug
>          Components: TDB
>    Affects Versions: Jena 3.7.0
>            Reporter: Claude Warren
>            Priority: Major
>         Attachments: TDBGraphTxnTest.java
>
>
> If, when in a transaction, an instance of GraphTxnTDB calls abort() and subsquently calls begin() an "Existing active write transaction"  TDBTransactionException is thrown.
>  
> Example JUnit test is attached.
>  
>  
>  



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