Package net.sansa_stack.spark.rdd.op.rdf

Class JavaRddOfDatasetsOps

java.lang.Object
net.sansa_stack.spark.rdd.op.rdf.JavaRddOfDatasetsOps
public class JavaRddOfDatasetsOps extends Object

  • Constructor Summary

    Constructors
    Constructor
    Description
    JavaRddOfDatasetsOps()
     

  • Method Summary

    Modifier and Type
    Method
    Description
    static org.apache.spark.api.java.JavaPairRDD<String,org.apache.jena.rdf.model.Model>
    flatMapToNamedModels(org.apache.spark.api.java.JavaRDD<? extends org.apache.jena.query.Dataset> rdd)
     
    static org.apache.spark.api.java.JavaRDD<org.apache.jena.sparql.core.Quad>
    flatMapToQuads(org.apache.spark.api.java.JavaRDD<? extends org.apache.jena.query.Dataset> rdd)
     
    static org.apache.spark.api.java.JavaRDD<org.apache.jena.graph.Triple>
    flatMapToTriples(org.apache.spark.api.java.JavaRDD<? extends org.apache.jena.query.Dataset> rdd)
    Maps a dataset to triples - emits quads from named graphs as triples by dropping the named graph
    static org.apache.spark.api.java.JavaRDD<org.aksw.jenax.arq.dataset.api.DatasetOneNg>
    groupNamedGraphsByGraphIri(org.apache.spark.api.java.JavaRDD<? extends org.apache.jena.query.Dataset> rdd, boolean distinct, boolean sortGraphsByIri, int numPartitions)
    Group all graphs by their named graph IRIs.

    Methods inherited from class java.lang.Object

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

  • Constructor Details

    • JavaRddOfDatasetsOps

      public JavaRddOfDatasetsOps()

  • Method Details

    • flatMapToQuads

      public static org.apache.spark.api.java.JavaRDD<org.apache.jena.sparql.core.Quad> flatMapToQuads(org.apache.spark.api.java.JavaRDD<? extends org.apache.jena.query.Dataset> rdd)

    • flatMapToTriples

      public static org.apache.spark.api.java.JavaRDD<org.apache.jena.graph.Triple> flatMapToTriples(org.apache.spark.api.java.JavaRDD<? extends org.apache.jena.query.Dataset> rdd)
      Maps a dataset to triples - emits quads from named graphs as triples by dropping the named graph

    • flatMapToNamedModels

      public static org.apache.spark.api.java.JavaPairRDD<String,org.apache.jena.rdf.model.Model> flatMapToNamedModels(org.apache.spark.api.java.JavaRDD<? extends org.apache.jena.query.Dataset> rdd)

    • groupNamedGraphsByGraphIri

      public static org.apache.spark.api.java.JavaRDD<org.aksw.jenax.arq.dataset.api.DatasetOneNg> groupNamedGraphsByGraphIri(org.apache.spark.api.java.JavaRDD<? extends org.apache.jena.query.Dataset> rdd, boolean distinct, boolean sortGraphsByIri, int numPartitions)
      Group all graphs by their named graph IRIs. Effectively merges triples from all named graphs with the same IRI. Removes duplicated triples. Ignores default graphs which get lost.