[jira] [Updated] (JENA-1107) Improve jena-base lib.Tuple

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

     [ https://issues.apache.org/jira/browse/JENA-1107?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Andy Seaborne updated JENA-1107:
--------------------------------
    Summary: Improve jena-base lib.Tuple  (was: Rework jena-base lib.Tuple)

> Improve jena-base lib.Tuple
> ---------------------------
>
>                 Key: JENA-1107
>                 URL: https://issues.apache.org/jira/browse/JENA-1107
>             Project: Apache Jena
>          Issue Type: Improvement
>            Reporter: Andy Seaborne
>            Assignee: Andy Seaborne
>            Priority: Minor
>
> Tuples, which are immutable, value-equality fixed length sequences of instances of the same type, accessed by index.
> They are like {{T[]}} but immutable, with .equals based on contents, could be improved to work independently of their original use in TDB.
> Proposal:
> #  Make Tuple an interface (simpler than current), with special implementations for low number of elements.
> # {{ColumnMap}} ==> {{TupleMap}} and sort out the naming as much as possible to use as a way to manage index mapping, not just rewriting Tuples.
> An intermediate step is to move {{ColumnMap}} into TDB.
> This is not a proposal to add it to {{Triple}} or {{Quad}}.
> {{Triple}} is not the same as a 3-length {{Tuple<Node>}}.  Triple elements are accessed by name (`getSubject` etc) not index.  SPO is just one possible order in which to think about triples but it has no special status. 



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