org.apache.clerezza.implementation.graph

Class AbstractImmutableGraph

java.lang.Object

java.util.AbstractCollection<Triple>

org.apache.clerezza.implementation.graph.AbstractGraph

org.apache.clerezza.implementation.graph.AbstractImmutableGraph

All Implemented Interfaces:

Iterable<Triple>, Collection<Triple>, Graph, ImmutableGraph

Direct Known Subclasses:

SimpleImmutableGraph

public abstract class AbstractImmutableGraph
extends AbstractGraph
implements ImmutableGraph

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

Author:

reto

Constructor Summary

Constructors

Constructor and Description
AbstractImmutableGraph()

Method Summary

Modifier and Type	Method and Description
boolean	add(Triple e)
boolean	addAll(Collection<? extends Triple> c)
void	clear()
boolean	equals(Object obj) Returns true if other describes the same graph and will always describe the same graph as this instance, false otherwise.
ImmutableGraph	getImmutableGraph() Returns an ImutableGraph describing the graph at the current point in time.
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.implementation.graph.AbstractGraph

contains, containsAll, filter, getLock, isEmpty, iterator, performAdd, performAddAll, performClear, performContains, performContainsAll, performFilter, performGetImmutableGraph, performIsEmpty, performIterator, performRemove, performRemoveAll, performRetainAll, performSize, performToArray, performToArray, retainAll, size, toArray, toArray

Methods inherited from class java.util.AbstractCollection

toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.clerezza.Graph

filter, getLock

Methods inherited from interface java.util.Collection

contains, containsAll, isEmpty, iterator, parallelStream, removeIf, retainAll, size, spliterator, stream, toArray, toArray

Methods inherited from interface java.lang.Iterable

forEach

Constructor Detail

AbstractImmutableGraph

public AbstractImmutableGraph()

Method Detail

hashCode

public final int hashCode()

Description copied from interface: ImmutableGraph

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 ImmutableGraph

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 AbstractGraph

addAll

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

Specified by:

addAll in interface Collection<Triple>

Overrides:

addAll in class AbstractGraph

remove

public boolean remove(Object o)

Specified by:

remove in interface Collection<Triple>

Overrides:

remove in class AbstractGraph

removeAll

public boolean removeAll(Collection<?> c)

Specified by:

removeAll in interface Collection<Triple>

Overrides:

removeAll in class AbstractGraph

clear

public void clear()

Specified by:

clear in interface Collection<Triple>

Overrides:

clear in class AbstractGraph

getImmutableGraph

public ImmutableGraph getImmutableGraph()

Description copied from interface: Graph

Returns an ImutableGraph describing the graph at the current point in time. if this is an instance of ImmutableGraph this can safely return this.

Specified by:

getImmutableGraph in interface Graph

Overrides:

getImmutableGraph in class AbstractGraph

Returns:

the current time slice of the possibly mutable graph represented by the instance.

equals

public boolean equals(Object obj)

Description copied from interface: Graph

Returns true if other describes the same graph and will always describe the same graph as this instance, false otherwise. It returns true if this == other or if it is otherwise guaranteed that changes to one of the instances are immediately reflected in the other or if both graphs are immutable.

Specified by:

equals in interface Collection<Triple>

Specified by:

equals in interface Graph

Specified by:

equals in interface ImmutableGraph

Overrides:

equals in class AbstractGraph

Returns:

true if other == this