49 lines
1.5 KiB
Elixir
49 lines
1.5 KiB
Elixir
defmodule RDF.Triple do
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@moduledoc """
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Helper functions for RDF triples.
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A RDF Triple is represented as a plain Elixir tuple consisting of three valid
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RDF values for subject, predicate and object.
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"""
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alias RDF.Statement
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@doc """
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Creates a `RDF.Triple` with proper RDF values.
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An error is raised when the given elements are not convertible to RDF values.
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Note: The `RDF.triple` function is a shortcut to this function.
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## Examples
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iex> RDF.Triple.new("http://example.com/S", "http://example.com/p", 42)
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{~I<http://example.com/S>, ~I<http://example.com/p>, RDF.literal(42)}
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iex> RDF.Triple.new(EX.S, EX.p, 42)
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{RDF.uri("http://example.com/S"), RDF.uri("http://example.com/p"), RDF.literal(42)}
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"""
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def new(subject, predicate, object) do
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{
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Statement.convert_subject(subject),
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Statement.convert_predicate(predicate),
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Statement.convert_object(object)
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}
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end
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@doc """
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Creates a `RDF.Triple` with proper RDF values.
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An error is raised when the given elements are not convertible to RDF values.
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Note: The `RDF.triple` function is a shortcut to this function.
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## Examples
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iex> RDF.Triple.new {"http://example.com/S", "http://example.com/p", 42}
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{~I<http://example.com/S>, ~I<http://example.com/p>, RDF.literal(42)}
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iex> RDF.Triple.new {EX.S, EX.p, 42}
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{RDF.uri("http://example.com/S"), RDF.uri("http://example.com/p"), RDF.literal(42)}
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"""
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def new({subject, predicate, object}), do: new(subject, predicate, object)
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end
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