Module org.apache.jena.core
Package org.apache.jena.enhanced

Class EnhGraph

java.lang.Object
org.apache.jena.enhanced.EnhGraph
Direct Known Subclasses:
ModelCom
public class EnhGraph extends Object
EnhGraph wraps a plain graph and contains enhanced nodes that wrap the plain nodes of the plain graph. All the enhanced nodes in the enhanced graph share the same polymorphic personality.

  • Constructor Summary

    Constructors
    Constructor
    Description
    EnhGraph(Graph g, Personality<RDFNode> p)
    Construct an enhanced graph from the given underlying graph, and a factory for generating enhanced nodes.

  • Method Summary

    Modifier and Type
    Method
    Description
    Graph
    asGraph()
    Answer the normal graph that this enhanced graph is wrapping.
    final boolean
    equals(Object o)
    An enhanced graph is equal to another graph g iff the underlying graphs are equal.
    <X extends RDFNode>
    X
    getNodeAs(Node n, Class<X> interf)
    Answer an enhanced node that wraps the given node and conforms to the given interface type.
    final int
    hashCode()
    Hashcode for an enhanced graph is delegated to the underlying graph.
    final boolean
    isIsomorphicWith(EnhGraph eg)
    Answer true if the given enhanced graph contains the same nodes and edges as this graph.
    void
    setNodeCache(Cache<Node,RDFNode> cc)
    Set the cache controller object for this graph

    Methods inherited from class java.lang.Object

    getClass, notify, notifyAll, toString, wait, wait, wait

  • Constructor Details

    • EnhGraph

      public EnhGraph(Graph g, Personality<RDFNode> p)
      Construct an enhanced graph from the given underlying graph, and a factory for generating enhanced nodes.
      Parameters:
      g - The underlying plain graph, may be null to defer binding to a given graph until later.
      p - The personality factory, that maps types to realizations

  • Method Details

    • asGraph

      public Graph asGraph()
      Answer the normal graph that this enhanced graph is wrapping.
      Returns:
      A graph

    • hashCode

      public final int hashCode()
      Hashcode for an enhanced graph is delegated to the underlying graph.
      Overrides:
      hashCode in class Object
      Returns:
      The hashcode as an int

    • equals

      public final boolean equals(Object o)
      An enhanced graph is equal to another graph g iff the underlying graphs are equal. This is deemed to be a complete and correct interpretation of enhanced graph equality, which is why this method has been marked final.

      Note that this equality test does not look for correspondence between the structures in the two graphs. To test whether another graph has the same nodes and edges as this one, use isIsomorphicWith(org.apache.jena.enhanced.EnhGraph).

      Overrides:
      equals in class Object
      Parameters:
      o - An object to test for equality with this node
      Returns:
      True if o is equal to this node.
      See Also:

    • isIsomorphicWith

      public final boolean isIsomorphicWith(EnhGraph eg)
      Answer true if the given enhanced graph contains the same nodes and edges as this graph. The default implementation delegates this to the underlying graph objects.
      Parameters:
      eg - A graph to test
      Returns:
      True if eg is a graph with the same structure as this.

    • getNodeAs

      public <X extends RDFNode> X getNodeAs(Node n, Class<X> interf)
      Answer an enhanced node that wraps the given node and conforms to the given interface type.
      Parameters:
      n - A node (assumed to be in this graph)
      interf - A type denoting the enhanced facet desired
      Returns:
      An enhanced node

    • setNodeCache

      public void setNodeCache(Cache<Node,RDFNode> cc)
      Set the cache controller object for this graph
      Parameters:
      cc - The cache controller