mirror of
https://github.com/trustgraph-ai/trustgraph.git
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65 lines
2.1 KiB
Python
65 lines
2.1 KiB
Python
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IS_A = 'http://www.w3.org/1999/02/22-rdf-syntax-ns#type'
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LABEL = 'http://www.w3.org/2000/01/rdf-schema#label'
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DIGITAL_DOCUMENT = 'https://schema.org/DigitalDocument'
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PUBLICATION_EVENT = 'https://schema.org/PublicationEvent'
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ORGANIZATION = 'https://schema.org/Organization'
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NAME = 'https://schema.org/name'
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DESCRIPTION = 'https://schema.org/description'
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COPYRIGHT_NOTICE = 'https://schema.org/copyrightNotice'
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COPYRIGHT_HOLDER = 'https://schema.org/copyrightHolder'
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COPYRIGHT_YEAR = 'https://schema.org/copyrightYear'
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LICENSE = 'https://schema.org/license'
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PUBLICATION = 'https://schema.org/publication'
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START_DATE = 'https://schema.org/startDate'
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END_DATE = 'https://schema.org/endDate'
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PUBLISHED_BY = 'https://schema.org/publishedBy'
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DATE_PUBLISHED = 'https://schema.org/datePublished'
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PUBLICATION = 'https://schema.org/publication'
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DATE_PUBLISHED = 'https://schema.org/datePublished'
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URL = 'https://schema.org/url'
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IDENTIFIER = 'https://schema.org/identifier'
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KEYWORD = 'https://schema.org/keywords'
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class Uri(str):
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def is_uri(self): return True
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def is_literal(self): return False
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def is_triple(self): return False
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class Literal(str):
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def is_uri(self): return False
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def is_literal(self): return True
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def is_triple(self): return False
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class QuotedTriple:
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"""
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RDF-star quoted triple (reification).
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Represents a triple that can be used as the object of another triple,
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enabling statements about statements.
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Example:
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# stmt:123 tg:reifies <<:Hope skos:definition "A feeling...">>
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qt = QuotedTriple(
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s=Uri("https://example.org/Hope"),
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p=Uri("http://www.w3.org/2004/02/skos/core#definition"),
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o=Literal("A feeling of expectation")
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)
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"""
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def __init__(self, s, p, o):
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self.s = s # Uri, Literal, or QuotedTriple
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self.p = p # Uri
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self.o = o # Uri, Literal, or QuotedTriple
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def is_uri(self): return False
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def is_literal(self): return False
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def is_triple(self): return True
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def __repr__(self):
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return f"<<{self.s} {self.p} {self.o}>>"
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def __str__(self):
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return f"<<{self.s} {self.p} {self.o}>>"
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