Package org.eclipse.rdf4j.model.impl

Class AbstractModel

java.lang.Object
java.util.AbstractCollection<E>
java.util.AbstractSet<Statement>
org.eclipse.rdf4j.model.impl.AbstractModel
All Implemented Interfaces:
Serializable, Iterable<Statement>, Collection<Statement>, Set<Statement>, Model, NamespaceAware
Direct Known Subclasses:
EmptyModel, FilteredModel, LinkedHashModel, SailModel, TreeModel
public abstract class AbstractModel extends AbstractSet<Statement> implements Model
Provides basic operations that are common to all Models.
See Also:
Serialized Form

  • Constructor Details

    • AbstractModel

      public AbstractModel()

  • Method Details

    • unmodifiable

      public Model unmodifiable()
      Description copied from interface: Model
      Returns an unmodifiable view of this model. This method provides "read-only" access to this model. Query operations on the returned model "read through" to this model, and attempts to modify the returned model, whether direct or via its iterator, result in an UnsupportedOperationException.

      Specified by:
      unmodifiable in interface Model
      Returns:
      an unmodifiable view of the specified set.

    • add

      public boolean add​(Statement st)
      Specified by:
      add in interface Collection<Statement>
      Specified by:
      add in interface Set<Statement>
      Overrides:
      add in class AbstractCollection<Statement>

    • isEmpty

      public boolean isEmpty()
      Specified by:
      isEmpty in interface Collection<Statement>
      Specified by:
      isEmpty in interface Set<Statement>
      Overrides:
      isEmpty in class AbstractCollection<Statement>

    • containsAll

      public boolean containsAll​(Collection<?> c)
      Specified by:
      containsAll in interface Collection<Statement>
      Specified by:
      containsAll in interface Set<Statement>
      Overrides:
      containsAll in class AbstractCollection<Statement>

    • removeAll

      public boolean removeAll​(Collection<?> c)
      Specified by:
      removeAll in interface Collection<Statement>
      Specified by:
      removeAll in interface Set<Statement>
      Overrides:
      removeAll in class AbstractSet<Statement>

    • toArray

      public Object[] toArray()
      Specified by:
      toArray in interface Collection<Statement>
      Specified by:
      toArray in interface Set<Statement>
      Overrides:
      toArray in class AbstractCollection<Statement>

    • toArray

      public <T> T[] toArray​(T[] a)
      Specified by:
      toArray in interface Collection<Statement>
      Specified by:
      toArray in interface Set<Statement>
      Overrides:
      toArray in class AbstractCollection<Statement>

    • addAll

      public boolean addAll​(Collection<? extends Statement> c)
      Specified by:
      addAll in interface Collection<Statement>
      Specified by:
      addAll in interface Set<Statement>
      Overrides:
      addAll in class AbstractCollection<Statement>

    • retainAll

      public boolean retainAll​(Collection<?> c)
      Specified by:
      retainAll in interface Collection<Statement>
      Specified by:
      retainAll in interface Set<Statement>
      Overrides:
      retainAll in class AbstractCollection<Statement>

    • clear

      public void clear()
      Specified by:
      clear in interface Collection<Statement>
      Specified by:
      clear in interface Set<Statement>
      Overrides:
      clear in class AbstractCollection<Statement>

    • clear

      public boolean clear​(Resource... contexts)
      Description copied from interface: Model
      Removes statements with the specified context exist in this model.
      Specified by:
      clear in interface Model
      Parameters:
      contexts - The context of the statements to remove.
      Returns:
      true if one or more statements have been removed.

    • remove

      public boolean remove​(Object o)
      Specified by:
      remove in interface Collection<Statement>
      Specified by:
      remove in interface Set<Statement>
      Overrides:
      remove in class AbstractCollection<Statement>

    • contains

      public boolean contains​(Object o)
      Specified by:
      contains in interface Collection<Statement>
      Specified by:
      contains in interface Set<Statement>
      Overrides:
      contains in class AbstractCollection<Statement>

    • subjects

      public Set<Resource> subjects()
      Description copied from interface: Model
      Returns a Set view of the subjects contained in this model. The set is backed by the model, so changes to the model are reflected in the set, and vice-versa. If the model is modified while an iteration over the set is in progress (except through the iterator's own remove operation), the results of the iteration are undefined. The set supports element removal, which removes all statements from the model for which that element is a subject value, via the Iterator.remove, Set.remove, removeAll, retainAll, and clear operations. It does not support the add or addAll operations if the parameters pred or obj are null.
      Specified by:
      subjects in interface Model
      Returns:
      a set view of the subjects contained in this model

    • predicates

      public Set<IRI> predicates()
      Description copied from interface: Model
      Returns a Set view of the predicates contained in this model. The set is backed by the model, so changes to the model are reflected in the set, and vice-versa. If the model is modified while an iteration over the set is in progress (except through the iterator's own remove operation), the results of the iteration are undefined. The set supports element removal, which removes all statements from the model for which that element is a predicate value, via the Iterator.remove, Set.remove, removeAll, retainAll, and clear operations. It does not support the add or addAll operations if the parameters subj or obj are null.
      Specified by:
      predicates in interface Model
      Returns:
      a set view of the predicates contained in this model

    • objects

      public Set<Value> objects()
      Description copied from interface: Model
      Returns a Set view of the objects contained in this model. The set is backed by the model, so changes to the model are reflected in the set, and vice-versa. If the model is modified while an iteration over the set is in progress (except through the iterator's own remove operation), the results of the iteration are undefined. The set supports element removal, which removes all statements from the model for which that element is an object value, via the Iterator.remove, Set.remove, removeAll, retainAll, and clear operations. It does not support the add or addAll operations if the parameters subj or pred are null.
      Specified by:
      objects in interface Model
      Returns:
      a set view of the objects contained in this model

    • contexts

      public Set<Resource> contexts()
      Description copied from interface: Model
      Returns a Set view of the contexts contained in this model. The set is backed by the model, so changes to the model are reflected in the set, and vice-versa. If the model is modified while an iteration over the set is in progress (except through the iterator's own remove operation), the results of the iteration are undefined. The set supports element removal, which removes all statements from the model for which that element is a context value, via the Iterator.remove, Set.remove, removeAll, retainAll, and clear operations. It does not support the add or addAll operations if the parameters subj , pred or obj are null.
      Specified by:
      contexts in interface Model
      Returns:
      a set view of the contexts contained in this model

    • removeTermIteration

      public abstract void removeTermIteration​(Iterator<Statement> iter, Resource subj, IRI pred, Value obj, Resource... contexts)
      Called by aggregate sets when a term has been removed from a term iterator. Exactly one of the last four terms will be non-empty.
      Parameters:
      iter - The iterator used to navigate the live set (never null)
      subj - the subject term to be removed or null
      pred - the predicate term to be removed or null
      obj - the object term to be removed or null
      contexts - an array of one context term to be removed or an empty array

    • closeIterator

      protected void closeIterator​(Iterator<?> iter)
      Cleans up any resources used by this iterator. After this call the given iterator should not be used.
      Parameters:
      iter - Iterator to clean up