org.apache.clerezza.rdf.core.impl
Class AbstractGraph

java.lang.Object
  java.util.AbstractCollection<Triple>
      org.apache.clerezza.rdf.core.impl.AbstractTripleCollection
          org.apache.clerezza.rdf.core.impl.AbstractGraph

All Implemented Interfaces:

Iterable<Triple>, Collection<Triple>, Graph, TripleCollection

Direct Known Subclasses:

SimpleGraph

public abstract class AbstractGraph
extends AbstractTripleCollection
implements Graph

AbstractGraph is an abstract implementation of Graph implementing the equals and the hashCode methods.

Author:

reto

Constructor Summary

AbstractGraph()

Method Summary

boolean	add(Triple e)
boolean	addAll(Collection<? extends Triple> c)
void	clear()
boolean	equals(Object obj) Returns true if two graphs are isomorphic
int	hashCode() Return the sum of the blank-nodes independent hashes of the triples.
boolean	remove(Object o)
boolean	removeAll(Collection<?> c)

Methods inherited from class org.apache.clerezza.rdf.core.impl.AbstractTripleCollection

addGraphListener, addGraphListener, contains, dispatchEvent, filter, iterator, performAdd, performFilter, performRemove, removeGraphListener

Methods inherited from class java.util.AbstractCollection

containsAll, isEmpty, retainAll, size, toArray, toArray, toString

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.apache.clerezza.rdf.core.TripleCollection

addGraphListener, addGraphListener, filter, removeGraphListener

Methods inherited from interface java.util.Collection

contains, containsAll, isEmpty, iterator, retainAll, size, toArray, toArray

Constructor Detail

AbstractGraph

public AbstractGraph()

Method Detail

hashCode

public final int hashCode()

Description copied from interface: Graph

Return the sum of the blank-nodes independent hashes of the triples. More precisely the hash of the triple is calculated as follows: (hash(subject) >> 1) ^ hash(hashCode) ^ (hash(hashCode) << 1) Where the hash-fucntion return the hashCode of the argument for grounded arguments and 0 otherwise.

Specified by:

hashCode in interface Collection<Triple>

Specified by:

hashCode in interface Graph

Overrides:

hashCode in class Object

Returns:

hash code

add

public boolean add(Triple e)

Specified by:

add in interface Collection<Triple>

Overrides:

add in class AbstractTripleCollection

addAll

public boolean addAll(Collection<? extends Triple> c)

Specified by:

addAll in interface Collection<Triple>

Overrides:

addAll in class AbstractCollection<Triple>

remove

public boolean remove(Object o)

Specified by:

remove in interface Collection<Triple>

Overrides:

remove in class AbstractTripleCollection

removeAll

public boolean removeAll(Collection<?> c)

Specified by:

removeAll in interface Collection<Triple>

Overrides:

removeAll in class AbstractTripleCollection

clear

public void clear()

Specified by:

clear in interface Collection<Triple>

Overrides:

clear in class AbstractCollection<Triple>

equals

public boolean equals(Object obj)

Description copied from interface: Graph

Returns true if two graphs are isomorphic

Specified by:

equals in interface Collection<Triple>

Specified by:

equals in interface Graph

Overrides:

equals in class Object

Returns:

true if two graphs are isomorphic