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core: add RDF.Statement.convert/1

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Marcel Otto 2017-06-05 03:01:23 +02:00
parent b72bf17d9c
commit e1e8769fb2
1 changed files with 16 additions and 0 deletions
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lib/rdf/statement.ex
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@ -18,6 +18,22 @@ defmodule RDF.Statement do
@type convertible_graph_name :: graph_name | atom | String.t
@doc """
Creates a `RDF.Statement` tuple with proper RDF values.
An error is raised when the given elements are not convertible to RDF values.
# Examples
iex> RDF.Statement.new {"http://example.com/S", "http://example.com/p", 42}
{~I<http://example.com/S>, ~I<http://example.com/p>, RDF.literal(42)}
iex> RDF.Statement.new {"http://example.com/S", "http://example.com/p", 42, "http://example.com/Graph"}
{~I<http://example.com/S>, ~I<http://example.com/p>, RDF.literal(42), ~I<http://example.com/Graph>}
"""
def convert(statement)
def convert({_, _, _} = triple), do: Triple.new(triple)
def convert({_, _, _, _} = quad), do: Quad.new(quad)
@doc false
def convert_subject(uri)
def convert_subject(uri = %URI{}), do: uri