Module org.apache.jena.core
Package org.apache.jena.graph.impl

Interface TripleStore

All Known Implementing Classes:
GraphTripleStore, GraphTripleStoreBase, GraphTripleStoreMem
public interface TripleStore
TripleStore - interface for bulk storage of triples used in composed graphs.

  • Method Summary

    Modifier and Type
    Method
    Description
    void
    add(Triple t)
    Add a triple to this triple store.
    void
    clear()
    Clear this store, ie remove all triples from it.
    void
    close()
    Destroy this triple store - discard the indexes.
    boolean
    contains(Triple t)
    Answer true iff this triple store contains the (concrete) triple t.
    void
    delete(Triple t)
    Remove a triple from this triple store.
    ExtendedIterator<Triple>
    find(Triple t)
    Answer an ExtendedIterator returning all the triples from this store that match the pattern m = (S, P, O).
    boolean
    isEmpty()
    Answer true iff this triple store is empty.
    ExtendedIterator<Node>
    listObjects()
    Answer an setwise iterator over all the objects of triples in this store.
    ExtendedIterator<Node>
    listPredicates()
    Answer an iterator over all the predicates of triples in this store.
    ExtendedIterator<Node>
    listSubjects()
    Answer an setwise iterator over all the subjects of triples in this store.
    int
    size()
    Answer the size (number of triples) of this triple store.

  • Method Details

    • close

      void close()
      Destroy this triple store - discard the indexes.

    • add

      void add(Triple t)
      Add a triple to this triple store.

    • delete

      void delete(Triple t)
      Remove a triple from this triple store.

    • size

      int size()
      Answer the size (number of triples) of this triple store.

    • isEmpty

      boolean isEmpty()
      Answer true iff this triple store is empty.

    • contains

      boolean contains(Triple t)
      Answer true iff this triple store contains the (concrete) triple t.

    • listSubjects

      ExtendedIterator<Node> listSubjects()
      Answer an setwise iterator over all the subjects of triples in this store.

    • listPredicates

      ExtendedIterator<Node> listPredicates()
      Answer an iterator over all the predicates of triples in this store.

    • listObjects

      ExtendedIterator<Node> listObjects()
      Answer an setwise iterator over all the objects of triples in this store.

    • find

      ExtendedIterator<Triple> find(Triple t)
      Answer an ExtendedIterator returning all the triples from this store that match the pattern m = (S, P, O).

    • clear

      void clear()
      Clear this store, ie remove all triples from it.