Package org.topbraid.jenax.util

Class JenaUtilHelper

java.lang.Object
org.topbraid.jenax.util.JenaUtilHelper
public class JenaUtilHelper extends Object
This is an extension point for the SPIN library allowing modification of some low level utilities that are exposed through JenaUtil. Note: Unstable - should not be used outside of TopBraid.
Author:
Jeremy Carroll

  • Constructor Details

    • JenaUtilHelper

      public JenaUtilHelper()

  • Method Details

    • createMultiUnion

      public org.apache.jena.graph.compose.MultiUnion createMultiUnion()
      Return a multiunion.
      Returns:
      the MultiUnion graph

    • createMultiUnion

      public org.apache.jena.graph.compose.MultiUnion createMultiUnion(Iterator<org.apache.jena.graph.Graph> graphs)
      Return a multiunion, initialized with the given graphs.
      Parameters:
      graphs - the Graphs to convert
      Returns:
      the MultiUnion graph

    • createMultiUnion

      public org.apache.jena.graph.compose.MultiUnion createMultiUnion(org.apache.jena.graph.Graph[] graphs)
      Return a multiunion, initialized with the given graphs.
      Parameters:
      graphs - the Graphs to convert
      Returns:
      the MultiUnion graph

    • createDefaultGraph

      public org.apache.jena.graph.Graph createDefaultGraph()
      A memory graph with no reification.
      Returns:
      the default Graph

    • isMemoryGraph

      public boolean isMemoryGraph(org.apache.jena.graph.Graph graph)
      Returns true if optimizations for faster graphs should be applied; false if graph is slower. A typical fast graph is stored in memory, a typical slow graph is stored in a database. The calling code JenaUtil.isMemoryGraph(Graph) deals with MultiUnions by taking the logical AND of the subgraphs.
      Parameters:
      graph - A simple graph, not a MultiUnion
      Returns:
      true if the graph is fast

    • asReadOnlyModel

      public org.apache.jena.rdf.model.Model asReadOnlyModel(org.apache.jena.rdf.model.Model m)

    • asReadOnlyGraph

      public org.apache.jena.graph.Graph asReadOnlyGraph(org.apache.jena.graph.Graph g)

    • createOntologyModel

      public org.apache.jena.ontology.OntModel createOntologyModel(org.apache.jena.ontology.OntModelSpec spec, org.apache.jena.rdf.model.Model base)

    • createConcurrentGraph

      public org.apache.jena.graph.Graph createConcurrentGraph()

    • setGraphReadOptimization

      public void setGraphReadOptimization(boolean b)

    • deepCloneReadOnlyGraph

      public org.apache.jena.graph.Graph deepCloneReadOnlyGraph(org.apache.jena.graph.Graph g)