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https://issues.apache.org/jira/browse/JENA-1492?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16386354#comment-16386354
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ASF GitHub Bot commented on JENA-1492:
--------------------------------------
Github user ajs6f commented on the issue:
https://github.com/apache/jena/pull/369
Okay. `::wrap` vs. `::create` is not what I am referring to as
reformatting. It's stuff like
[this](https://github.com/apache/jena/pull/369/files#diff-27cb8b74e951d2872a91a48066930e2d)
or
[this](https://github.com/apache/jena/pull/369/files#diff-9d27f4f9095b5d190b6fe8977b6c393b).
From what I understand, this all makes sense. Datasets that are "collected"
from multiple graphs can, at best, pass the transaction through to their
graphs, those that are in control of their own data can retain the
responsibility for transactions themselves. That does seem to be the least
surprising behavior and the one that veers towards "dataset as the fundamental
unit" which we have been working towards.
> Transactions not passed down for nested models.
> -----------------------------------------------
>
> Key: JENA-1492
> URL: https://issues.apache.org/jira/browse/JENA-1492
> Project: Apache Jena
> Issue Type: Bug
> Components: Fuseki, TDB, TDB2
> Affects Versions: Jena 3.7.0
> Reporter: Andy Seaborne
> Priority: Major
> Attachments: config-tdb2-model.ttl
>
>
> From [users@
> email|https://lists.apache.org/thread.html/eacd92488360298a4916b2b1b0cf2d299797140be1960f84410f9b5d@%3Cusers.jena.apache.org%3E],
> after the configuration sorted out.
> Hierarchies of models, such as inference models, on top of a TBD2
> backed-graph do not pass down the transaction leading to
> {noformat}
> org.apache.jena.dboe.transaction.txn.TransactionException: Not in a
> transaction
> at
> org.apache.jena.dboe.transaction.txn.TransactionalComponentLifecycle.checkTxn(TransactionalComponentLifecycle.java:417)
> at
> org.apache.jena.dboe.trans.bplustree.BPlusTree.getRootRead(BPlusTree.java:159)
> at
> org.apache.jena.dboe.trans.bplustree.BPlusTree.iterator(BPlusTree.java:348)
> at
> org.apache.jena.tdb2.store.tupletable.TupleIndexRecord.all(TupleIndexRecord.java:251)
> at
> org.apache.jena.tdb2.store.tupletable.TupleTable.find(TupleTable.java:148)
> at
> org.apache.jena.tdb2.store.nodetupletable.NodeTupleTableConcrete.find(NodeTupleTableConcrete.java:161)
> at
> org.apache.jena.tdb2.store.nodetupletable.NodeTupleTableConcrete.find(NodeTupleTableConcrete.java:150)
> at
> org.apache.jena.tdb2.store.nodetupletable.NodeTupleTableConcrete.findAsNodeIds(NodeTupleTableConcrete.java:141)
> at org.apache.jena.tdb2.store.TripleTable.find(TripleTable.java:64)
> at
> org.apache.jena.tdb2.store.DatasetGraphTDB.findInDftGraph(DatasetGraphTDB.java:110)
> at
> org.apache.jena.sparql.core.DatasetGraphBaseFind.find(DatasetGraphBaseFind.java:47)
> at
> org.apache.jena.sparql.core.DatasetGraphWrapper.find(DatasetGraphWrapper.java:152)
> at org.apache.jena.sparql.core.GraphView.graphBaseFind(GraphView.java:125)
> at org.apache.jena.graph.impl.GraphBase.find(GraphBase.java:255)
> {noformat}
> Example configuration (full version attached):
> {noformat}
> :service a fuseki:Service ;
> fuseki:dataset :dataset ;
> ...
> ## Wrapper: Datset containing one TDB2-backed graph
> :dataset a ja:RDFDataset ;
> ja:defaultGraph :graph .
> ## TDB2-backed graph
> :graph rdf:type tdb2:GraphTDB ;
> tdb2:dataset :datasetTDB2 .
> ## TDB2 database
> :datasetTDB2 rdf:type tdb2:DatasetTDB2 ;
> tdb2:location "DB2".
> {noformat}
>
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