Package org.apache.commons.rdf.jsonldjava

Class JsonLdDatasetImpl

java.lang.Object

org.apache.commons.rdf.jsonldjava.AbstractJsonLdGraphLike<Quad>

org.apache.commons.rdf.jsonldjava.JsonLdDatasetImpl

All Implemented Interfaces:

java.lang.AutoCloseable, Dataset, GraphLike<Quad>, JsonLdDataset, JsonLdGraphLike<Quad>

class JsonLdDatasetImpl
extends AbstractJsonLdGraphLike<Quad>
implements JsonLdDataset

Field Summary

Fields inherited from class org.apache.commons.rdf.jsonldjava.AbstractJsonLdGraphLike

bnodePrefix, factory, rdfDataSet

Constructor Summary

Constructors

Constructor	Description
JsonLdDatasetImpl(com.github.jsonldjava.core.RDFDataset rdfDataSet)
JsonLdDatasetImpl(com.github.jsonldjava.core.RDFDataset rdfDataset, java.lang.String bnodePrefix)
JsonLdDatasetImpl(java.lang.String bnodePrefix)

Method Summary

Modifier and Type	Method	Description
void	add(BlankNodeOrIRI graphName, BlankNodeOrIRI subject, IRI predicate, RDFTerm object)	Add a quad to the dataset, possibly mapping any of the components to those supported by this dataset.
(package private) Quad	asTripleOrQuad(com.github.jsonldjava.core.RDFDataset.Quad jsonldQuad)	Convert JsonLd Quad to a Commons RDF Triple or Quad
boolean	contains(java.util.Optional<BlankNodeOrIRI> graphName, BlankNodeOrIRI subject, IRI predicate, RDFTerm object)	Check if dataset contains a pattern of quads.
Graph	getGraph()	Get the default graph of this dataset.
java.util.Optional<Graph>	getGraph(BlankNodeOrIRI graphName)	Get a named graph in this dataset.
java.util.stream.Stream<BlankNodeOrIRI>	getGraphNames()	Get the graph names in this Dataset.
void	remove(java.util.Optional<BlankNodeOrIRI> graphName, BlankNodeOrIRI subject, IRI predicate, RDFTerm object)	Remove a concrete pattern of quads from the default graph of the dataset.
void	remove(Quad q)	Add a statement.
long	size()	Number of statements.
java.util.stream.Stream<? extends Quad>	stream(java.util.Optional<BlankNodeOrIRI> graphName, BlankNodeOrIRI subject, IRI predicate, RDFTerm object)	Get all quads contained by the dataset matched with the pattern.

Methods inherited from class org.apache.commons.rdf.jsonldjava.AbstractJsonLdGraphLike

add, clear, close, contains, filteredGraphs, getRdfDataSet, graphNameAsJsonLdString, quadFilter, stream

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.apache.commons.rdf.api.Dataset

add, clear, close, contains, iterate, iterate, stream

Methods inherited from interface org.apache.commons.rdf.jsonldjava.JsonLdGraphLike

getRdfDataSet

Constructor Detail

JsonLdDatasetImpl

JsonLdDatasetImpl(com.github.jsonldjava.core.RDFDataset rdfDataSet)

JsonLdDatasetImpl

JsonLdDatasetImpl(com.github.jsonldjava.core.RDFDataset rdfDataset,
                  java.lang.String bnodePrefix)

JsonLdDatasetImpl

JsonLdDatasetImpl(java.lang.String bnodePrefix)

Method Detail

add

public void add(BlankNodeOrIRI graphName,
                BlankNodeOrIRI subject,
                IRI predicate,
                RDFTerm object)

Description copied from interface: Dataset

Add a quad to the dataset, possibly mapping any of the components to those supported by this dataset.

Specified by:

add in interface Dataset

Overrides:

add in class AbstractJsonLdGraphLike<Quad>

Parameters:

graphName - The graph the quad belongs to, or null for the default graph

subject - The quad subject

predicate - The quad predicate

object - The quad object

contains

public boolean contains(java.util.Optional<BlankNodeOrIRI> graphName,
                        BlankNodeOrIRI subject,
                        IRI predicate,
                        RDFTerm object)

Description copied from interface: Dataset

Check if dataset contains a pattern of quads.

Specified by:

contains in interface Dataset

Overrides:

contains in class AbstractJsonLdGraphLike<Quad>

Parameters:

graphName - The graph the quad belongs to, wrapped as an Optional (null is a wildcard, Optional.empty() is the default graph)

subject - The quad subject (null is a wildcard)

predicate - The quad predicate (null is a wildcard)

object - The quad object (null is a wildcard)

Returns:

True if the dataset contains any quads that match the given pattern.

getGraph

public Graph getGraph()

Description copied from interface: Dataset

Get the default graph of this dataset.

The Triples of the default graph are equivalent to the Quads in this Dataset which has the Quad.getGraphName() set to Optional.empty().

It is unspecified if modifications to the returned Graph are reflected in this Dataset.

The returned graph MAY be empty.

Specified by:

getGraph in interface Dataset

Returns:

The default graph of this Dataset

See Also:

Dataset.getGraph(BlankNodeOrIRI)

getGraph

public java.util.Optional<Graph> getGraph(BlankNodeOrIRI graphName)

Description copied from interface: Dataset

Get a named graph in this dataset.

The Triples of the named graph are equivalent to the the Quads of this Dataset which has the Quad.getGraphName() equal to the provided graphName, or equal to Optional.empty() if the provided graphName is null.

It is unspecified if modifications to the returned Graph are reflected in this Dataset.

It is unspecified if requesting an unknown or empty graph will return Optional.empty() or create a new empty Graph.

Specified by:

getGraph in interface Dataset

Parameters:

graphName - The name of the graph, or null for the default graph.

Returns:

The named Graph, or Optional.empty() if the dataset do not contain the named graph.

See Also:

Dataset.getGraph(), Dataset.getGraphNames()

getGraphNames

public java.util.stream.Stream<BlankNodeOrIRI> getGraphNames()

Description copied from interface: Dataset

Get the graph names in this Dataset.

The set of returned graph names is equivalent to the set of unique Quad.getGraphName() of all the Dataset.stream() of this dataset (excluding the default graph).

The returned Stream SHOULD NOT contain duplicate graph names.

The graph names can be used with Dataset.getGraph(BlankNodeOrIRI) to retrieve the corresponding Graph, however callers should be aware of any concurrent modifications to the Dataset may cause such calls to return Optional.empty().

Note that a Dataset always contains a default graph which is not named, and thus is not represented in the returned Stream. The default graph is accessible via Dataset.getGraph() or by using Optional.empty() in the Quad access methods).

Specified by:

getGraphNames in interface Dataset

Returns:

A Stream of the graph names of this Dataset.

remove

public void remove(java.util.Optional<BlankNodeOrIRI> graphName,
                   BlankNodeOrIRI subject,
                   IRI predicate,
                   RDFTerm object)

Description copied from interface: Dataset

Remove a concrete pattern of quads from the default graph of the dataset.

Specified by:

remove in interface Dataset

Overrides:

remove in class AbstractJsonLdGraphLike<Quad>

Parameters:

graphName - The graph the quad belongs to, wrapped as an Optional (null is a wildcard, Optional.empty() is the default graph)

subject - The quad subject (null is a wildcard)

predicate - The quad predicate (null is a wildcard)

object - The quad object (null is a wildcard)

remove

public void remove(Quad q)

Description copied from interface: GraphLike

Add a statement.

Specified by:

remove in interface Dataset

Specified by:

remove in interface GraphLike<Quad>

Parameters:

q - The TripleLike statement to add

stream

public java.util.stream.Stream<? extends Quad> stream(java.util.Optional<BlankNodeOrIRI> graphName,
                                                      BlankNodeOrIRI subject,
                                                      IRI predicate,
                                                      RDFTerm object)

Description copied from interface: Dataset

Get all quads contained by the dataset matched with the pattern.

The iteration does not contain any duplicate quads, as determined by the Quad.equals(Object) method for each Quad.

The behaviour of the Stream is not specified if Dataset.add(Quad), Dataset.remove(Quad) or Dataset.clear() are called on the Dataset before it terminates.

Implementations may throw ConcurrentModificationException from Stream methods if they detect a conflict while the Stream is active.

Specified by:

stream in interface Dataset

Parameters:

graphName - The graph the quad belongs to, wrapped as an Optional (null is a wildcard, Optional.empty() is the default graph)

subject - The quad subject (null is a wildcard)

predicate - The quad predicate (null is a wildcard)

object - The quad object (null is a wildcard)

Returns:

A Stream over the matched quads.

size

public long size()

Description copied from interface: GraphLike

Number of statements.

Specified by:

size in interface Dataset

Specified by:

size in interface GraphLike<Quad>

Returns:

Number of statements

asTripleOrQuad

Quad asTripleOrQuad(com.github.jsonldjava.core.RDFDataset.Quad jsonldQuad)

Description copied from class: AbstractJsonLdGraphLike

Convert JsonLd Quad to a Commons RDF Triple or Quad

Specified by:

asTripleOrQuad in class AbstractJsonLdGraphLike<Quad>

Parameters:

jsonldQuad - jsonld quad to convert

Returns:

converted TripleLike

See Also:

JsonLdRDF.asTriple(Quad), JsonLdRDF.asQuad(Quad)