Package net.sansa_stack.spark.io.rdf.input.impl

Class RdfSourceCollectionImpl

java.lang.Object

net.sansa_stack.spark.io.rdf.input.impl.RdfSourceCollectionImpl

All Implemented Interfaces:

NodeTupleSource, RdfLikeSource, RdfSource, RdfSourceCollection

public class RdfSourceCollectionImpl
extends Object
implements RdfSourceCollection

Field Summary

Fields

Modifier and Type	Field	Description
protected Collection<RdfSource>	members
static final org.apache.jena.riot.Lang	MIXED_QUAD
static final org.apache.jena.riot.Lang	MIXED_TRIPLE
protected org.apache.spark.sql.SparkSession	sparkSession

Constructor Summary

Constructors

Constructor	Description
RdfSourceCollectionImpl(org.apache.spark.sql.SparkSession sparkSession)
RdfSourceCollectionImpl(org.apache.spark.sql.SparkSession sparkSession, Collection<RdfSource> members)

Method Summary

Modifier and Type	Method	Description
void	add(RdfSource rdfSource)
org.apache.spark.rdd.RDD<org.aksw.jenax.arq.dataset.api.DatasetOneNg>	asDatasets()	A stream of datasets having one named graph each
org.apache.spark.rdd.RDD<org.apache.jena.rdf.model.Model>	asModels()
org.apache.spark.rdd.RDD<org.apache.jena.sparql.core.Quad>	asQuads()
org.apache.spark.rdd.RDD<org.apache.jena.graph.Triple>	asTriples()	Return the backing loader; null if unknown
int	getComponentCount()
Collection<RdfSource>	getMembers()
boolean	isEmpty()
org.apache.jena.riot.system.PrefixMap	peekDeclaredPrefixes()	At present this creates a model holding an RDF sample based on a file's starting bytes.
static <I, T> org.apache.spark.rdd.RDD<T>	union(org.apache.spark.sql.SparkSession sparkSession, Collection<I> members, Function<I,org.apache.spark.rdd.RDD<T>> mapper)

Methods inherited from class java.lang.Object

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

Methods inherited from interface net.sansa_stack.spark.io.rdf.input.api.RdfSource

usesQuads

Field Details

MIXED_TRIPLE

public static final org.apache.jena.riot.Lang MIXED_TRIPLE

MIXED_QUAD

public static final org.apache.jena.riot.Lang MIXED_QUAD

sparkSession

protected org.apache.spark.sql.SparkSession sparkSession

members

protected Collection<RdfSource> members

Constructor Details

RdfSourceCollectionImpl

public RdfSourceCollectionImpl(org.apache.spark.sql.SparkSession sparkSession)

RdfSourceCollectionImpl

public RdfSourceCollectionImpl(org.apache.spark.sql.SparkSession sparkSession,
 Collection<RdfSource> members)

Method Details

isEmpty

public boolean isEmpty()

Specified by:

isEmpty in interface RdfSourceCollection

add

public void add(RdfSource rdfSource)

Specified by:

add in interface RdfSourceCollection

getMembers

public Collection<RdfSource> getMembers()

Specified by:

getMembers in interface RdfSourceCollection

getComponentCount

public int getComponentCount()

Specified by:

getComponentCount in interface NodeTupleSource

union

public static <I,
T> org.apache.spark.rdd.RDD<T> union(org.apache.spark.sql.SparkSession sparkSession,
 Collection<I> members,
 Function<I,org.apache.spark.rdd.RDD<T>> mapper)

asTriples

public org.apache.spark.rdd.RDD<org.apache.jena.graph.Triple> asTriples()

Description copied from interface: RdfSource

Return the backing loader; null if unknown

Specified by:

asTriples in interface RdfSource

asQuads

public org.apache.spark.rdd.RDD<org.apache.jena.sparql.core.Quad> asQuads()

Specified by:

asQuads in interface RdfSource

asModels

public org.apache.spark.rdd.RDD<org.apache.jena.rdf.model.Model> asModels()

Specified by:

asModels in interface RdfSource

asDatasets

public org.apache.spark.rdd.RDD<org.aksw.jenax.arq.dataset.api.DatasetOneNg> asDatasets()

Description copied from interface: RdfSource

A stream of datasets having one named graph each

Specified by:

asDatasets in interface RdfSource

peekDeclaredPrefixes

public org.apache.jena.riot.system.PrefixMap peekDeclaredPrefixes()

Description copied from interface: RdfLikeSource

At present this creates a model holding an RDF sample based on a file's starting bytes. May be changed to PrefixMap

Specified by:

peekDeclaredPrefixes in interface RdfLikeSource