View Source RDF.List (RDF.ex v2.0.1)
A structure for RDF lists.
see
Summary
Functions
Checks if a list is the empty list.
Creates a RDF.List
from a native Elixir list or any other Enumerable
with coercible RDF values.
Checks if the given RDF.Description
describes an RDF list node.
Checks if a given resource is an RDF list node in a given RDF.Graph
.
The RDF nodes constituting a RDF.List
as an Elixir list.
Checks if the given list consists of list nodes which are all blank nodes.
The values of a RDF.List
as an Elixir list.
Types
@type t() :: %RDF.List{graph: RDF.Graph.t(), head: RDF.IRI.t()}
Functions
Checks if a list is the empty list.
@spec from( Enumerable.t(), keyword() ) :: t()
Creates a RDF.List
from a native Elixir list or any other Enumerable
with coercible RDF values.
By default, the statements constituting the Enumerable
are added to an empty graph. An
already existing graph to which the statements are added can be specified with
the graph
option.
The name of the head node can be specified with the head
option
(default: RDF.bnode()
, i.e. an arbitrary unique name).
Note: When the given Enumerable
is empty, the name
option will be ignored -
the head node of the empty list is always RDF.nil
.
@spec new(RDF.IRI.coercible(), RDF.Graph.t()) :: t()
Creates a RDF.List
for a given RDF list node of a given RDF.Graph
.
If the given node does not refer to a well-formed list in the graph, nil
is
returned. A well-formed list
- consists of list nodes which have exactly one
rdf:first
andrdf:rest
statement each - does not contain cycles, i.e.
rdf:rest
statements don't refer to preceding list nodes
Checks if the given RDF.Description
describes an RDF list node.
@spec node?(any(), RDF.Graph.t()) :: boolean()
Checks if a given resource is an RDF list node in a given RDF.Graph
.
Although, technically a resource is a list, if it uses at least one rdf:first
or rdf:rest
, we pragmatically require the usage of both.
Note: This function doesn't indicate if the list is valid.
See new/2
and valid?/2
for validations.
@spec nodes(t()) :: [RDF.BlankNode.t()]
The RDF nodes constituting a RDF.List
as an Elixir list.
Checks if the given list consists of list nodes which are all blank nodes.
@spec values(t()) :: Enumerable.t()
The values of a RDF.List
as an Elixir list.
Nested lists are converted recursively.