rdf-ex/lib/rdf.ex

137 lines
4.4 KiB
Elixir

defmodule RDF do
@moduledoc """
The top-level module of RDF.ex.
RDF.ex consists of:
- modules for the nodes of an RDF graph
- `RDF.IRI`
- `RDF.BlankNode`
- `RDF.Literal`
- a facility for the mapping of URIs of a vocabulary to Elixir modules and
functions: `RDF.Vocabulary.Namespace`
- modules for the construction of statements
- `RDF.Triple`
- `RDF.Quad`
- `RDF.Statement`
- modules for collections of statements
- `RDF.Description`
- `RDF.Graph`
- `RDF.Dataset`
- `RDF.Data`
- `RDF.List`
- the foundations for the definition of RDF serialization formats
- `RDF.Serialization`
- `RDF.Serialization.Decoder`
- `RDF.Serialization.Encoder`
- and the implementation of various RDF serialization formats
- `RDF.NTriples`
- `RDF.NQuads`
- `RDF.Turtle`
This top-level module provides shortcut functions for the construction of the
basic elements and structures of RDF and some general helper functions.
For a general introduction you may refer to the [README](readme.html).
"""
alias RDF.{IRI, Namespace, Literal, BlankNode, Triple, Quad,
Description, Graph, Dataset}
@doc """
Checks if the given value is a RDF resource.
## Examples
iex> RDF.resource?(RDF.iri("http://example.com/resource"))
true
iex> RDF.resource?(EX.resource)
true
iex> RDF.resource?(RDF.bnode)
true
iex> RDF.resource?(42)
false
"""
def resource?(value)
def resource?(%IRI{}), do: true
def resource?(%BlankNode{}), do: true
def resource?(atom) when is_atom(atom), do: resource?(Namespace.resolve_term(atom))
def resource?(_), do: false
defdelegate uri?(value), to: IRI, as: :valid?
defdelegate iri?(value), to: IRI, as: :valid?
defdelegate uri(value), to: IRI, as: :new
defdelegate iri(value), to: IRI, as: :new
defdelegate uri!(value), to: IRI, as: :new!
defdelegate iri!(value), to: IRI, as: :new!
@doc """
Checks if the given value is a blank node.
## Examples
iex> RDF.bnode?(RDF.bnode)
true
iex> RDF.bnode?(RDF.iri("http://example.com/resource"))
false
iex> RDF.bnode?(42)
false
"""
def bnode?(%BlankNode{}), do: true
def bnode?(_), do: false
defdelegate bnode(), to: BlankNode, as: :new
defdelegate bnode(id), to: BlankNode, as: :new
defdelegate literal(value), to: Literal, as: :new
defdelegate literal(value, opts), to: Literal, as: :new
defdelegate triple(s, p, o), to: Triple, as: :new
defdelegate triple(tuple), to: Triple, as: :new
defdelegate quad(s, p, o, g), to: Quad, as: :new
defdelegate quad(tuple), to: Quad, as: :new
defdelegate description(arg), to: Description, as: :new
defdelegate description(arg1, arg2), to: Description, as: :new
defdelegate description(arg1, arg2, arg3), to: Description, as: :new
defdelegate graph(), to: Graph, as: :new
defdelegate graph(arg), to: Graph, as: :new
defdelegate graph(arg1, arg2), to: Graph, as: :new
defdelegate graph(arg1, arg2, arg3), to: Graph, as: :new
defdelegate graph(arg1, arg2, arg3, arg4), to: Graph, as: :new
defdelegate dataset(), to: Dataset, as: :new
defdelegate dataset(arg), to: Dataset, as: :new
defdelegate dataset(arg1, arg2), to: Dataset, as: :new
defdelegate list?(resource, graph), to: RDF.List, as: :node?
defdelegate list?(description), to: RDF.List, as: :node?
def list(native_list),
do: RDF.List.from(native_list)
def list(head, %Graph{} = graph),
do: RDF.List.new(head, graph)
def list(native_list, opts),
do: RDF.List.from(native_list, opts)
for term <- ~w[type subject predicate object first rest value]a do
defdelegate unquote(term)(), to: RDF.NS.RDF
defdelegate unquote(term)(s, o), to: RDF.NS.RDF
defdelegate unquote(term)(s, o1, o2), to: RDF.NS.RDF
defdelegate unquote(term)(s, o1, o2, o3), to: RDF.NS.RDF
defdelegate unquote(term)(s, o1, o2, o3, o4), to: RDF.NS.RDF
defdelegate unquote(term)(s, o1, o2, o3, o4, o5), to: RDF.NS.RDF
end
defdelegate langString(), to: RDF.NS.RDF
defdelegate unquote(nil)(), to: RDF.NS.RDF
defdelegate __base_iri__(), to: RDF.NS.RDF
end