Package org.aksw.jena_sparql_api.algebra.transform

Class TransformDatasetNamesViaSpo

java.lang.Object
org.apache.jena.sparql.algebra.TransformCopy
org.aksw.jena_sparql_api.algebra.transform.TransformDatasetNamesViaSpo
All Implemented Interfaces:
org.apache.jena.sparql.algebra.Transform
public class TransformDatasetNamesViaSpo extends org.apache.jena.sparql.algebra.TransformCopy
Transforms 
GRAPH ?g {}
to 
SELECT DISTINCT ?g { GRAPH ?g { ?s ?p ?o } }
and transforms 
GRAPH <g> {}
to 
 FILTER EXISTS {
   SELECT DISTINCT ?g { GRAPH ?g { ?s ?p ?o } }
   FILTER(?g = <g>)
 }
.

  • Field Summary

    Fields inherited from class org.apache.jena.sparql.algebra.TransformCopy

    COPY_ALWAYS, COPY_ONLY_ON_CHANGE

  • Constructor Summary

    Constructors
    Constructor
    Description
    TransformDatasetNamesViaSpo()
     

  • Method Summary

    Modifier and Type
    Method
    Description
    static org.apache.jena.sparql.algebra.Op
    createGraphNamesOp(org.apache.jena.graph.Node graphNode)
     
    static void
    main(String[] args)
     
    org.apache.jena.sparql.algebra.Op
    transform(org.apache.jena.sparql.algebra.op.OpDatasetNames opDatasetNames)
     
    org.apache.jena.sparql.algebra.Op
    transform(org.apache.jena.sparql.algebra.op.OpGraph opGraph, org.apache.jena.sparql.algebra.Op subOp)
     

    Methods inherited from class org.apache.jena.sparql.algebra.TransformCopy

    transform, transform, transform, transform, transform, transform, transform, transform, transform, transform, transform, transform, transform, transform, transform, transform, transform, transform, transform, transform, transform, transform, transform, transform, transform, transform, transform, transform, transform, transform, transform, transform, transform, transform, transform

    Methods inherited from class java.lang.Object

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

  • Constructor Details

    • TransformDatasetNamesViaSpo

      public TransformDatasetNamesViaSpo()

  • Method Details

    • transform

      public org.apache.jena.sparql.algebra.Op transform(org.apache.jena.sparql.algebra.op.OpGraph opGraph, org.apache.jena.sparql.algebra.Op subOp)
      Specified by:
      transform in interface org.apache.jena.sparql.algebra.Transform
      Overrides:
      transform in class org.apache.jena.sparql.algebra.TransformCopy

    • transform

      public org.apache.jena.sparql.algebra.Op transform(org.apache.jena.sparql.algebra.op.OpDatasetNames opDatasetNames)
      Specified by:
      transform in interface org.apache.jena.sparql.algebra.Transform
      Overrides:
      transform in class org.apache.jena.sparql.algebra.TransformCopy

    • createGraphNamesOp

      public static org.apache.jena.sparql.algebra.Op createGraphNamesOp(org.apache.jena.graph.Node graphNode)

    • main

      public static void main(String[] args)