ISSUE-39: Refactor R2RML spec to avoid duplicate definitions

refactor-common-props

Refactor R2RML spec to avoid duplicate definitions

State:

CLOSED

Product:

R2RML

Raised by:

Richard Cyganiak

Opened on:

2011-03-22

Description:

Currently the R2RML spec defines many properties, such as :column, :graph, :termType, in multiple places, because they can occur in multiple contexts (subject map, predicate map, object map) and their rules and constraints vary slightly depending on context (e.g., blank nodes allowed in subject maps but not predicate maps).

The duplication makes the spec harder to read and understand (and harder to write/update!)

The spec could be refactored so that these properties are defined only once, in a section that defines “common properties for mapping a SQL result row to an RDF node” or something like that.

Then there could be short sections for subject/predicate/object maps that only state the specific constraints imposed on the common properties in that context.

Related Actions Items:

No related actions

Related emails:

1. update ACTION-136 [Fwd: ACTION-136] (from souripriya.das@oracle.com on 2011-07-12)
2. Re: ISSUE-46 (shorter property names): Remove the 'use' prefix from property names [R2RML] (from richard@cyganiak.de on 2011-06-23)
3. Re: RDB2RDF WG agenda for 2011-03-29 meeting 1600 UTC (from privera.salas@gmail.com on 2011-03-29)
4. Re: RDB2RDF WG agenda for 2011-03-29 meeting 1600 UTC (from nuno.lopes@deri.org on 2011-03-29)
5. Re: RDB2RDF WG agenda for 2011-03-29 meeting 1600 UTC (from richard@cyganiak.de on 2011-03-25)
6. Re: RDB2RDF WG agenda for 2011-03-29 meeting 1600 UTC (from ivan@w3.org on 2011-03-25)
7. RDB2RDF WG agenda for 2011-03-29 meeting 1600 UTC (from michael.hausenblas@deri.org on 2011-03-25)
8. ISSUE-39 (refactor-common-props): Refactor R2RML spec to avoid duplicate definitions [R2RML] (from sysbot+tracker@w3.org on 2011-03-22)

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