2017-05-24 21:37:09 +00:00
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defprotocol RDF.Data do
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@moduledoc """
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An abstraction over the different data structures for collections of RDF statements.
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"""
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2017-06-08 19:50:46 +00:00
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@doc """
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Adds statements to a RDF data structure.
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As opposed to the specific `add` functions on the RDF data structures, which
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always return the same structure type than the first argument, `merge` might
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result in another RDF data structure, eg. merging two `RDF.Description` with
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different subjects results in a `RDF.Graph` or adding a quad to a `RDF.Graph`
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with a different name than the graph context of the quad results in a
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`RDF.Dataset`. But it is always guaranteed that the resulting structure has
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a `RDF.Data` implementation.
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"""
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2020-10-10 20:09:29 +00:00
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def merge(data, input, opts \\ [])
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2017-06-08 19:50:46 +00:00
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2017-05-24 21:37:09 +00:00
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@doc """
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Deletes statements from a RDF data structure.
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2017-06-08 19:50:46 +00:00
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As opposed to the `delete` functions on RDF data structures directly, this
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function only deletes exactly matching structures.
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2017-05-24 21:37:09 +00:00
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"""
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2020-10-10 20:09:29 +00:00
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def delete(data, input, opts \\ [])
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2017-05-24 21:37:09 +00:00
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@doc """
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Deletes one statement from a RDF data structure and returns a tuple with deleted statement and the changed data structure.
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"""
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def pop(data)
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@doc """
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Checks if the given statement exists within a RDF data structure.
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"""
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2020-10-10 20:09:29 +00:00
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def include?(data, input, opts \\ [])
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2017-05-24 21:37:09 +00:00
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@doc """
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2017-07-23 21:59:50 +00:00
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Checks if a RDF data structure contains statements about the given resource.
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2017-05-24 21:37:09 +00:00
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"""
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2017-07-23 21:59:50 +00:00
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def describes?(data, subject)
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2017-05-24 21:37:09 +00:00
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2017-06-05 00:48:39 +00:00
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@doc """
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Returns a `RDF.Description` of the given subject.
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Note: On a `RDF.Dataset` this will return an aggregated `RDF.Description` with
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the statements about this subject from all graphs.
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"""
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def description(data, subject)
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2017-07-07 17:03:01 +00:00
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@doc """
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Returns all `RDF.Description`s within a RDF data structure.
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Note: On a `RDF.Dataset` this will return aggregated `RDF.Description`s about
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the same subject from all graphs.
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"""
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def descriptions(data)
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2017-07-23 21:59:50 +00:00
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@doc """
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Returns the list of all statements of a RDF data structure.
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"""
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def statements(data)
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2017-05-24 21:37:09 +00:00
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@doc """
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Returns the set of all resources which are subject of the statements of a RDF data structure.
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"""
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def subjects(data)
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@doc """
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Returns the set of all properties used within the statements of RDF data structure.
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"""
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def predicates(data)
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@doc """
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Returns the set of all resources used in the objects within the statements of a RDF data structure.
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"""
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def objects(data)
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@doc """
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Returns the set of all resources used within the statements of a RDF data structure
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"""
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def resources(data)
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@doc """
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Returns the count of all resources which are subject of the statements of a RDF data structure.
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"""
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def subject_count(data)
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@doc """
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Returns the count of all statements of a RDF data structure.
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"""
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def statement_count(data)
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2018-10-28 02:50:48 +00:00
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@doc """
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Returns a nested map of the native Elixir values of a RDF data structure.
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2020-10-10 13:45:25 +00:00
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2020-10-13 09:38:22 +00:00
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When a `:context` option is given with a `RDF.PropertyMap`, predicates will
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be mapped to the terms defined in the `RDF.PropertyMap`, if present.
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2018-10-28 02:50:48 +00:00
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"""
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2020-10-13 09:38:22 +00:00
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def values(data, opts \\ [])
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2018-10-28 02:50:48 +00:00
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2018-11-04 21:27:25 +00:00
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@doc """
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2020-10-10 13:45:25 +00:00
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Returns a map representation of a RDF data structure where each element from its statements is mapped with the given function.
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2018-11-04 21:27:25 +00:00
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"""
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2020-10-10 13:45:25 +00:00
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def map(data, fun)
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2019-04-03 23:55:34 +00:00
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@doc """
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Checks if two RDF data structures are equal.
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Two RDF data structures are considered to be equal if they contain the same triples.
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- comparing two `RDF.Description`s it's just the same as `RDF.Description.equal?/2`
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- comparing two `RDF.Graph`s differs in `RDF.Graph.equal?/2` in that the graph
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name is ignored
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- comparing two `RDF.Dataset`s differs in `RDF.Dataset.equal?/2` in that the
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dataset name is ignored
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- a `RDF.Description` is equal to a `RDF.Graph`, if the graph has just one
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description which equals the given description
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- a `RDF.Description` is equal to a `RDF.Dataset`, if the dataset has just one
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graph which contains only the given description
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- a `RDF.Graph` is equal to a `RDF.Dataset`, if the dataset has just one
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graph which equals the given graph; note that in this case the graph names
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must match
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"""
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def equal?(data1, data2)
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2017-05-24 21:37:09 +00:00
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end
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2017-06-04 02:20:08 +00:00
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defimpl RDF.Data, for: RDF.Description do
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2020-10-10 20:23:01 +00:00
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alias RDF.{Description, Graph, Dataset, Statement}
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2020-10-10 20:09:29 +00:00
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def merge(description, input, opts \\ [])
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2020-10-10 20:23:01 +00:00
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def merge(%Description{subject: subject} = description, {s, _, _} = triple, opts) do
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with ^subject <- Statement.coerce_subject(s) do
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Description.add(description, triple, opts)
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2017-06-08 19:50:46 +00:00
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else
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_ ->
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2020-10-10 20:23:01 +00:00
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Graph.new(description)
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|> Graph.add(triple, opts)
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2017-06-08 19:50:46 +00:00
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end
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end
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2020-10-10 20:09:29 +00:00
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def merge(description, {_, _, _, _} = quad, opts),
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2020-10-10 20:23:01 +00:00
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do: Dataset.new(description) |> Dataset.add(quad, opts)
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2017-06-08 19:50:46 +00:00
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2020-06-29 08:37:42 +00:00
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def merge(
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2020-10-10 20:23:01 +00:00
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%Description{subject: subject} = description,
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%Description{subject: other_subject} = other_description,
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2020-10-10 20:09:29 +00:00
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opts
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2020-06-29 08:37:42 +00:00
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)
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when other_subject == subject,
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2020-10-10 20:23:01 +00:00
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do: Description.add(description, other_description, opts)
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2017-06-08 19:50:46 +00:00
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2020-10-10 20:23:01 +00:00
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def merge(description, %Description{} = other_description, opts),
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do: Graph.new(description) |> Graph.add(other_description, opts)
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2017-06-08 19:50:46 +00:00
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2020-10-10 20:23:01 +00:00
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def merge(description, %Graph{} = graph, opts),
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2020-10-10 20:09:29 +00:00
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do: RDF.Data.merge(graph, description, opts)
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2017-06-08 19:50:46 +00:00
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2020-10-10 20:23:01 +00:00
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def merge(description, %Dataset{} = dataset, opts),
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2020-10-10 20:09:29 +00:00
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do: RDF.Data.merge(dataset, description, opts)
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def delete(description, input, opts \\ [])
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2017-06-08 19:50:46 +00:00
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2020-06-29 08:37:42 +00:00
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def delete(
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2020-10-10 20:23:01 +00:00
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%Description{subject: subject} = description,
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%Description{subject: other_subject},
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2020-10-10 20:09:29 +00:00
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_opts
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2020-06-29 08:37:42 +00:00
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)
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when subject != other_subject,
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do: description
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2017-06-08 19:50:46 +00:00
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2020-10-10 20:23:01 +00:00
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def delete(description, input, opts), do: Description.delete(description, input, opts)
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2017-06-08 19:50:46 +00:00
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2020-10-10 20:23:01 +00:00
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def pop(description), do: Description.pop(description)
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2017-06-04 02:20:08 +00:00
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2020-10-10 20:09:29 +00:00
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def include?(description, input, opts \\ []),
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2020-10-10 20:23:01 +00:00
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do: Description.include?(description, input, opts)
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2017-06-04 02:20:08 +00:00
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2017-07-23 21:59:50 +00:00
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def describes?(description, subject),
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2020-10-10 20:23:01 +00:00
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do: Description.describes?(description, subject)
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2017-06-05 00:48:39 +00:00
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2020-10-10 20:23:01 +00:00
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def description(%Description{subject: subject} = description, s) do
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with ^subject <- Statement.coerce_subject(s) do
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2017-06-05 00:48:39 +00:00
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description
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else
|
2020-10-10 20:23:01 +00:00
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_ -> Description.new(s)
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2017-06-05 00:48:39 +00:00
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end
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end
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2017-07-07 17:03:01 +00:00
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def descriptions(description), do: [description]
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2020-10-10 20:23:01 +00:00
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def statements(description), do: Description.statements(description)
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2017-07-23 21:59:50 +00:00
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2020-10-10 20:23:01 +00:00
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def subjects(%Description{subject: subject}), do: MapSet.new([subject])
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def predicates(description), do: Description.predicates(description)
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def objects(description), do: Description.objects(description)
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2017-06-04 02:20:08 +00:00
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2020-10-10 20:23:01 +00:00
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def resources(%Description{subject: subject} = description),
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do: Description.resources(description) |> MapSet.put(subject)
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2017-06-04 02:20:08 +00:00
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2020-06-29 08:37:42 +00:00
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def subject_count(_), do: 1
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2020-10-10 20:23:01 +00:00
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def statement_count(description), do: Description.count(description)
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2020-10-10 13:45:25 +00:00
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2020-10-13 09:38:22 +00:00
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def values(description, opts \\ []),
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do: Description.values(description, opts)
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2020-10-10 13:45:25 +00:00
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2020-10-10 20:23:01 +00:00
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def map(description, fun), do: Description.map(description, fun)
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2019-04-03 23:55:34 +00:00
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2020-10-10 20:23:01 +00:00
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def equal?(description, %Description{} = other_description) do
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Description.equal?(description, other_description)
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2019-04-03 23:55:34 +00:00
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end
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2020-10-10 20:23:01 +00:00
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def equal?(description, %Graph{} = graph) do
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with [single_description] <- Graph.descriptions(graph) do
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Description.equal?(description, single_description)
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2019-04-03 23:55:34 +00:00
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else
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_ -> false
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end
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end
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2020-10-10 20:23:01 +00:00
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def equal?(description, %Dataset{} = dataset) do
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2019-04-03 23:55:34 +00:00
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RDF.Data.equal?(dataset, description)
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end
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def equal?(_, _), do: false
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2017-06-04 02:20:08 +00:00
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end
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2017-06-04 02:51:06 +00:00
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defimpl RDF.Data, for: RDF.Graph do
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2020-10-10 20:23:01 +00:00
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alias RDF.{Description, Graph, Dataset, Statement}
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2020-10-10 20:09:29 +00:00
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def merge(graph, input, opts \\ [])
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2020-10-10 20:23:01 +00:00
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def merge(%Graph{name: name} = graph, {_, _, _, graph_context} = quad, opts) do
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with ^name <- Statement.coerce_graph_name(graph_context) do
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Graph.add(graph, quad, opts)
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2017-06-08 19:50:46 +00:00
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else
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_ ->
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2020-10-10 20:23:01 +00:00
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Dataset.new(graph)
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|> Dataset.add(quad, opts)
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2017-06-08 19:50:46 +00:00
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end
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end
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2020-10-10 20:09:29 +00:00
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def merge(graph, {_, _, _} = triple, opts),
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2020-10-10 20:23:01 +00:00
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do: Graph.add(graph, triple, opts)
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2017-06-08 19:50:46 +00:00
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2020-10-10 20:09:29 +00:00
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def merge(description, {_, _, _, _} = quad, opts),
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2020-10-10 20:23:01 +00:00
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do: Dataset.new(description) |> Dataset.add(quad, opts)
|
2017-06-08 19:50:46 +00:00
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2020-10-10 20:23:01 +00:00
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def merge(graph, %Description{} = description, opts),
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do: Graph.add(graph, description, opts)
|
2017-06-08 19:50:46 +00:00
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2020-06-29 08:37:42 +00:00
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def merge(
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2020-10-10 20:23:01 +00:00
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%Graph{name: name} = graph,
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%Graph{name: other_name} = other_graph,
|
2020-10-10 20:09:29 +00:00
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opts
|
2020-06-29 08:37:42 +00:00
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)
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when other_name == name,
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2020-10-10 20:23:01 +00:00
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do: Graph.add(graph, other_graph, opts)
|
2017-06-08 19:50:46 +00:00
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|
2020-10-10 20:23:01 +00:00
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def merge(graph, %Graph{} = other_graph, opts),
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do: Dataset.new(graph) |> Dataset.add(other_graph, opts)
|
2017-06-08 19:50:46 +00:00
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|
2020-10-10 20:23:01 +00:00
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def merge(graph, %Dataset{} = dataset, opts),
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2020-10-10 20:09:29 +00:00
|
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do: RDF.Data.merge(dataset, graph, opts)
|
2017-06-08 19:50:46 +00:00
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2020-10-10 20:09:29 +00:00
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def delete(graph, input, opts \\ [])
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|
2020-10-10 20:23:01 +00:00
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def delete(%Graph{name: name} = graph, %Graph{name: other_name}, _opts)
|
2020-06-29 08:37:42 +00:00
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when name != other_name,
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do: graph
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2020-10-10 20:23:01 +00:00
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def delete(graph, input, opts), do: Graph.delete(graph, input, opts)
|
2017-06-08 19:50:46 +00:00
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2020-10-10 20:23:01 +00:00
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def pop(graph), do: Graph.pop(graph)
|
2017-06-04 02:51:06 +00:00
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2020-10-10 20:23:01 +00:00
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def include?(graph, input, opts \\ []), do: Graph.include?(graph, input, opts)
|
2017-06-04 02:51:06 +00:00
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|
2017-07-23 21:59:50 +00:00
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def describes?(graph, subject),
|
2020-10-10 20:23:01 +00:00
|
|
|
do: Graph.describes?(graph, subject)
|
2017-06-05 00:48:39 +00:00
|
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def description(graph, subject),
|
2020-10-10 20:23:01 +00:00
|
|
|
do: Graph.description(graph, subject) || Description.new(subject)
|
2017-06-05 00:48:39 +00:00
|
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|
2020-10-10 20:23:01 +00:00
|
|
|
def descriptions(graph), do: Graph.descriptions(graph)
|
2017-07-07 17:03:01 +00:00
|
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|
2020-10-10 20:23:01 +00:00
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def statements(graph), do: Graph.statements(graph)
|
2017-07-23 21:59:50 +00:00
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|
2020-10-10 20:23:01 +00:00
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def subjects(graph), do: Graph.subjects(graph)
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def predicates(graph), do: Graph.predicates(graph)
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def objects(graph), do: Graph.objects(graph)
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def resources(graph), do: Graph.resources(graph)
|
2017-06-04 02:51:06 +00:00
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|
2020-10-10 20:23:01 +00:00
|
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def subject_count(graph), do: Graph.subject_count(graph)
|
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|
|
def statement_count(graph), do: Graph.triple_count(graph)
|
2020-10-13 09:38:22 +00:00
|
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|
def values(graph, opts \\ []), do: Graph.values(graph, opts)
|
2020-10-10 20:23:01 +00:00
|
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|
def map(graph, fun), do: Graph.map(graph, fun)
|
2019-04-03 23:55:34 +00:00
|
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|
2020-10-10 20:23:01 +00:00
|
|
|
def equal?(graph, %Description{} = description),
|
2019-04-03 23:55:34 +00:00
|
|
|
do: RDF.Data.equal?(description, graph)
|
|
|
|
|
2020-10-10 20:23:01 +00:00
|
|
|
def equal?(graph, %Graph{} = other_graph),
|
2020-06-29 08:37:42 +00:00
|
|
|
do:
|
2020-10-10 20:23:01 +00:00
|
|
|
Graph.equal?(
|
|
|
|
%Graph{graph | name: nil},
|
|
|
|
%Graph{other_graph | name: nil}
|
2020-06-29 08:37:42 +00:00
|
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|
)
|
2019-04-03 23:55:34 +00:00
|
|
|
|
2020-10-10 20:23:01 +00:00
|
|
|
def equal?(graph, %Dataset{} = dataset),
|
2019-04-03 23:55:34 +00:00
|
|
|
do: RDF.Data.equal?(dataset, graph)
|
|
|
|
|
|
|
|
def equal?(_, _), do: false
|
2017-06-04 02:51:06 +00:00
|
|
|
end
|
2017-06-04 20:19:21 +00:00
|
|
|
|
|
|
|
defimpl RDF.Data, for: RDF.Dataset do
|
2020-10-10 20:23:01 +00:00
|
|
|
alias RDF.{Description, Graph, Dataset, Statement}
|
|
|
|
|
2020-10-10 20:09:29 +00:00
|
|
|
def merge(dataset, input, opts \\ [])
|
|
|
|
|
|
|
|
def merge(dataset, {_, _, _} = triple, opts),
|
2020-10-10 20:23:01 +00:00
|
|
|
do: Dataset.add(dataset, triple, opts)
|
2020-10-10 20:09:29 +00:00
|
|
|
|
|
|
|
def merge(dataset, {_, _, _, _} = quad, opts),
|
2020-10-10 20:23:01 +00:00
|
|
|
do: Dataset.add(dataset, quad, opts)
|
2020-06-29 08:37:42 +00:00
|
|
|
|
2020-10-10 20:23:01 +00:00
|
|
|
def merge(dataset, %Description{} = description, opts),
|
|
|
|
do: Dataset.add(dataset, description, opts)
|
2020-06-29 08:37:42 +00:00
|
|
|
|
2020-10-10 20:23:01 +00:00
|
|
|
def merge(dataset, %Graph{} = graph, opts),
|
|
|
|
do: Dataset.add(dataset, graph, opts)
|
2020-06-29 08:37:42 +00:00
|
|
|
|
2020-10-10 20:23:01 +00:00
|
|
|
def merge(dataset, %Dataset{} = other_dataset, opts),
|
|
|
|
do: Dataset.add(dataset, other_dataset, opts)
|
2020-06-29 08:37:42 +00:00
|
|
|
|
2020-10-10 20:09:29 +00:00
|
|
|
def delete(dataset, input, opts \\ [])
|
2017-06-08 19:50:46 +00:00
|
|
|
|
2020-10-10 20:23:01 +00:00
|
|
|
def delete(%Dataset{name: name} = dataset, %Dataset{name: other_name}, _opts)
|
2020-06-29 08:37:42 +00:00
|
|
|
when name != other_name,
|
|
|
|
do: dataset
|
|
|
|
|
2020-10-10 20:23:01 +00:00
|
|
|
def delete(dataset, input, opts), do: Dataset.delete(dataset, input, opts)
|
2017-06-08 19:50:46 +00:00
|
|
|
|
2020-10-10 20:23:01 +00:00
|
|
|
def pop(dataset), do: Dataset.pop(dataset)
|
2017-06-04 20:19:21 +00:00
|
|
|
|
2020-10-10 20:23:01 +00:00
|
|
|
def include?(dataset, input, opts), do: Dataset.include?(dataset, input, opts)
|
2017-06-04 20:19:21 +00:00
|
|
|
|
2017-07-23 21:59:50 +00:00
|
|
|
def describes?(dataset, subject),
|
2020-10-10 20:23:01 +00:00
|
|
|
do: Dataset.who_describes(dataset, subject) != []
|
2017-06-05 00:48:39 +00:00
|
|
|
|
|
|
|
def description(dataset, subject) do
|
2020-10-10 20:23:01 +00:00
|
|
|
subject = Statement.coerce_subject(subject)
|
|
|
|
|
|
|
|
Enum.reduce(Dataset.graphs(dataset), Description.new(subject), fn
|
|
|
|
%Graph{descriptions: %{^subject => graph_description}}, description ->
|
|
|
|
Description.add(description, graph_description)
|
|
|
|
|
|
|
|
_, description ->
|
|
|
|
description
|
|
|
|
end)
|
2017-06-05 00:48:39 +00:00
|
|
|
end
|
|
|
|
|
2017-07-07 17:03:01 +00:00
|
|
|
def descriptions(dataset) do
|
|
|
|
dataset
|
|
|
|
|> subjects
|
2020-06-29 08:37:42 +00:00
|
|
|
|> Enum.map(&description(dataset, &1))
|
2017-07-07 17:03:01 +00:00
|
|
|
end
|
|
|
|
|
2020-10-10 20:23:01 +00:00
|
|
|
def statements(dataset), do: Dataset.statements(dataset)
|
2017-07-23 21:59:50 +00:00
|
|
|
|
2020-10-10 20:23:01 +00:00
|
|
|
def subjects(dataset), do: Dataset.subjects(dataset)
|
|
|
|
def predicates(dataset), do: Dataset.predicates(dataset)
|
|
|
|
def objects(dataset), do: Dataset.objects(dataset)
|
|
|
|
def resources(dataset), do: Dataset.resources(dataset)
|
2017-06-04 20:19:21 +00:00
|
|
|
|
2020-06-29 08:37:42 +00:00
|
|
|
def subject_count(dataset), do: dataset |> subjects |> Enum.count()
|
2020-10-10 20:23:01 +00:00
|
|
|
def statement_count(dataset), do: Dataset.statement_count(dataset)
|
2020-10-13 09:38:22 +00:00
|
|
|
def values(dataset, opts \\ []), do: Dataset.values(dataset, opts)
|
2020-10-10 20:23:01 +00:00
|
|
|
def map(dataset, fun), do: Dataset.map(dataset, fun)
|
2019-04-03 23:55:34 +00:00
|
|
|
|
2020-10-10 20:23:01 +00:00
|
|
|
def equal?(dataset, %Description{} = description) do
|
|
|
|
with [graph] <- Dataset.graphs(dataset) do
|
2019-04-03 23:55:34 +00:00
|
|
|
RDF.Data.equal?(description, graph)
|
|
|
|
else
|
|
|
|
_ -> false
|
|
|
|
end
|
|
|
|
end
|
|
|
|
|
2020-10-10 20:23:01 +00:00
|
|
|
def equal?(dataset, %Graph{} = graph) do
|
|
|
|
with [single_graph] <- Dataset.graphs(dataset) do
|
|
|
|
Graph.equal?(graph, single_graph)
|
2019-04-03 23:55:34 +00:00
|
|
|
else
|
|
|
|
_ -> false
|
|
|
|
end
|
|
|
|
end
|
|
|
|
|
2020-10-10 20:23:01 +00:00
|
|
|
def equal?(dataset, %Dataset{} = other_dataset) do
|
|
|
|
Dataset.equal?(
|
|
|
|
%Dataset{dataset | name: nil},
|
|
|
|
%Dataset{other_dataset | name: nil}
|
2020-06-29 08:37:42 +00:00
|
|
|
)
|
2019-04-03 23:55:34 +00:00
|
|
|
end
|
|
|
|
|
|
|
|
def equal?(_, _), do: false
|
|
|
|
end
|