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rdf-yoda_triples's Introduction

Yoda Triples

Object Subject Predicate, mmgh?

This way Yoda speaks: http://en.wikipedia.org/wiki/Object%E2%80%93subject%E2%80%93verb#Fictitious_languages.

Usage

graph = RDF::Graph.new
graph << RDF::Statement(RDF::URI('http://example.org/yoda'), RDF.type, RDF::URI('http://example.org/jedi'))
graph.dump :yodatriples
# => "<http://example.org/jedi> <http://example.org/yoda> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> mmgh?\n"

reader = RDF::Reader.for(:yodatriples)
reader.new(graph.dump(:yodatriples)).each_statement do |statement|
  puts statement.inspect
end

Specification

For more information, see the RDF 1.1 Y-Triples draft specification.

License

This is free and unencumbered public domain software. For more information, see http://unlicense.org/ or the accompanying UNLICENSE file.

rdf-yoda_triples's People

Contributors

zimeon avatar anarchivist avatar

Stargazers

Tazro Inutano Ohta avatar Angus H. avatar Arto Bendiken avatar Michael B. Klein avatar avatar Gregg Kellogg avatar Jon Stroop avatar Tod Robbins avatar

Watchers

Gregg Kellogg avatar James Cloos avatar tamsin woo avatar

Forkers

zimeon jpstroop anarchivist

rdf-yoda_triples's Issues

RDF::YodaTriples should discourage using faster, quicker serializations 

< If you choose the quick and easy path as
Vader did - you will become an agent of evil. >
        \
         \         ____
          \     _.' :  `._
            .-.'`.  ;   .'`.-.
   __      / : ___ ;  /___ ;  \      __
 ,'_ ""--.:__;".-.";: :".-.":__;.--"" _`,
 :' `.t""--.. '<@.`;_  ',@>` ..--""j.' `;
      `:-.._J '-.-'L__ `-- ' L_..-;'
        "-.__ ;  .-"  "-.  : __.-"
            L ' /.------. ' J
             "-.   "--"   .-"
            __.l"-:_JL_;-";.__
         .-j/'.;  ;""""  / .'"-.

Parsing YodaTriples should be an exercise in patience. Expedient serializations - and perhaps ones that are easy to read - should be discouraged.

RDF::YodaTriples fails to decompose copulae from compound predicative nominals

Simple predicative nominals such as A Jedi, Yoda is are handled correctly, but more complex predicative nominals embedding prepositional phrases, remain composed, e.g. To the dark side, fear is the path instead of To the dark side the path, fear is.

Steps to reproduce:

graph = RDF::Graph.new
graph << RDF::Statement(RDF::URI('http://example.org/yoda'),
                        RDF::RDFS.member,
                        RDF::URI('http://en.wikipedia.org/wiki/Galactic_Republic'))    
puts graph.dump :yodatriples

Expected: ‘Of the Galactic Republic a member Yoda is.’

<http://en.wikipedia.org/wiki/Galactic_Republic>
<http://www.w3.org/2000/01/rdf-schema#member>
<http://example.org/yoda>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>

Actual: ‘Of the Galactic Republic Yoda is a member.’

<http://en.wikipedia.org/wiki/Galactic_Republic>
<http://example.org/yoda>
<http://www.w3.org/2000/01/rdf-schema#member>

Note:

In defense of YodaTriples, Yoda doesn't get this right either.

image

Distinguish lexical form from N-Triples.

Any thought to distinguish the lexical form from N-Triples? For example, begin each line with y-.

Also, a mini-spec would be nice with some EBNF. Perhaps the following:

[1] yodaDoc ::= ytriple? (EOL triple)* EOL?
[2] ytriple ::= "y-" object subject predicate '.'
[3] subject ::= IRIREF | BLANK_NODE_LABEL
[4] predicate   ::= IRIREF
[5] object  ::= IRIREF | BLANK_NODE_LABEL | literal
[6] literal ::= STRING_LITERAL_QUOTE ('^^' IRIREF | LANGTAG)?

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