Meeting 2016 03 18

Present

@pieroit @bergos @elf-pavlik @dmitrizagidulin

Content

Stream Interfaces

https://github.com/rdfjs/representation-task-force/pull/55

• methods names for source and sink: .read, .write, .consume, .filter?
  • Piero thought about passing triples to Sink.write (maybe .write method confusing?)
• .pipe is not available with the simple interface, but it should be easy to extend simple streams to full features stream
• Dmitri sees need for some smiple examples, especially for proposed streams inteface

Named Node vs. IRI

https://github.com/rdfjs/representation-task-force/issues/50 https://github.com/rdfjs/representation-task-force/wiki/NamedNode

NamedNode (instead of IRI)

Pros

• Matches BlankNode notation
• Avoids cognitive overloading of the term -- IRI is an existing standard, with its own spec etc
• NamedNode contains an IRI
• existing specs and libraries: RDF-Interfaces, RDFLib.js, RDF-Ext
• somehow similar naming - owl:NamedIndividual
• if cases exist where a node has one or more IRIs and a value naming it IRI doesn't make sense - aka. smusing (merging) nodes
• if daft changes to use .iri instad of .value IRI.iri looks awkward

Cons

• Previous vote decided to go with IRI, so this would be a change/reversal
• Potentially less clear to developers new to RDF (IRI is a known/understandable concept, NamedNode potentially less so. However, this goes for BlankNode as well, and other RDF concepts)
• IRI is shorter
• ruby and python use URI/IRI terminology

Other options

• Python uses URIRef instead of named node or URI. Possibly an alternative option, IRIRef? (talk to Tim, etc)

Term property names

Pros

• why factory properties have diferent names

Cons

• Previous vote went with .value
• easier to explain to developers
• still possible to use .iri with an alias
• use cases:
  • debugger watchlist shows function calls delayed -> use .value for all cases
  • display stuff
  • compare already filtered nodes with a known, but dynamic type

Smushing / Merging Nodes

Example: https://github.com/RDFLib/rdflib/blob/master/examples/smushing.py

• Bergos: propose that this is implemented as a separate class, MergedNode

Other

• Question about https://github.com/rdfjs/representation-task-force/issues/42
• relevant https://github.com/rdfjs/representation-task-force/pull/51

Actions

• add streams examples: bergos
• discuss methods name in PR: bergos
• discuss .graph method (.read(null, null, null, graphIri)) in PR: elf-pavlik (mention destructive assigment with object)
• ask on the mailing list for feedback on the stream interfaces PR: bergos
• make separate page for Term property names elf-pavlik
• create PR to make Triple an alias of Quad