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https://issues.apache.org/jira/browse/JENA-1695?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16803829#comment-16803829
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Andy Seaborne edited comment on JENA-1695 at 3/28/19 3:21 PM:
--------------------------------------------------------------

Yes - there is a near 1-1 mapping.

{{DatasetGraph}} is API-focused (upward), {{StorageRDF}} component focused 
(downward), providing for three components (storage of triple/quads, storage 
prefixes, transactional). 

{{DatasetGraphStorage}} maps between the two.

There is also bridge code for prefixes from the storage to the API usage 
classes.




was (Author: andy.seaborne):
Yes - there is a near 1-1 mapping.

{{DatasetGraph}} is API-focused (upward), {{StorageRDF}} component focused 
(downward), providing for three compoents (storage of triple/quads, storage 
prefixes, transactional). 

{{DatasetGraphStorage}} maps between the two.

There is also bridge code for prefixes from the storage to the API usage 
classes.



> Refactory database storage for TDB2.
> ------------------------------------
>
>                 Key: JENA-1695
>                 URL: https://issues.apache.org/jira/browse/JENA-1695
>             Project: Apache Jena
>          Issue Type: Improvement
>          Components: DBOE
>    Affects Versions: Jena 3.11.0
>            Reporter: Andy Seaborne
>            Assignee: Andy Seaborne
>            Priority: Major
>             Fix For: Jena 3.12.0
>
>
> This ticket is for a new module (provisionally called "jena-db-storage") that 
> is a framework for building RDF databases. It abstracts the database in to 
> "triples+quads", "prefixes" and transactional control.
> {noformat}
> public interface DatabaseRDF  {
>     // Triples and Quads
>     public StorageRDF getData();
>     // Prefixes
>     public StoragePrefixes getPrefixes();
>     //Transactional} for this database.
>     public Transactional getTransactional();
> }
> {noformat}



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