Difference between revisions of "WebSchemas/RolesPattern"

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Revision as of 14:12, 27 March 2014

This is an archived WebSchemas proposal RolesPattern for schema.org. See Proposals listing for more. Note: active schema.org development is now based at github

This page tracks a proposal from the schema.org team for modeling various kinds of roles and contributions in a way that allows rich qualification. For example, when we say that a Person was an actor in a Movie, we might want to mention their characterName too. When we say that a SportsTeam has a Person as an athlete, we might want to mention the position that they play, or the time period in which they fulfilled that role.

To achieve this, a type "Role" is proposed, alongside a new property, "hasRole".

Full details:

  • PDF (Mar 26th draft), also available as a google doc.


hasRole/inRole in RDFa

Note that this example is an exploratory variation on the main proposal. It distinguishes between 'hasRole' and 'inRole'.

The original design circulated March 26th had a complication: it wanted a role-oriented property linking the Movie to the Role, and also the Person to the Role. To achieve this, local identifiers for the role were used (in JSON-LD syntax). Commentators on the list noted that this introduced new complexities for publishers. However it is hard to represent a complex graph structured without ID-based references. This example shows that it can be done in RDFa 1.1 notation, although this is also complex in a different way:

<div vocab="http://schema.org/" typeof="Movie">
  <span property="name">Ghostbusters</span>
  <div property="hasRole" typeof="MovieRole">
    <span property="characterName">Dr. Peter Venkman</span>
    <div rel="actor" rev="inRole" typeof="Person">
      <span property="name">Bill Murray</span>
Servlet 7664281029414785522.png

image example