org.apache.clerezza.test.utils

Class RandomGraph

java.lang.Object

org.apache.clerezza.test.utils.RandomGraph

All Implemented Interfaces:

Iterable<Triple>, Collection<Triple>, Graph

public class RandomGraph
extends Object

A Graph wrapper that allows growing and shrinking of the wrapped mgraph.

Author:

mir

Field Summary

Fields

Modifier and Type	Field and Description
protected Graph	wrapped

Constructor Summary

Constructors

Constructor and Description
RandomGraph(Graph mGraph, int interconnectivity)
RandomGraph(int initialSize, int interconnectivity, Graph mGraph) Creates a new random mutual graph.

Method Summary

Modifier and Type	Method and Description
boolean	add(Triple e)
boolean	addAll(Collection<? extends Triple> c)
Triple	addRandomTriple() Adds a random triple.
void	clear()
boolean	contains(Object o)
boolean	containsAll(Collection<?> c)
Triple	evolve() Add or removes randomly a triple.
Iterator<Triple>	filter(BlankNodeOrIRI subject, IRI predicate, RDFTerm object) Filters triples given a pattern.
ImmutableGraph	getImmutableGraph() Returns an ImutableGraph describing the graph at the current point in time.
ReadWriteLock	getLock() The lock provided by this methods allows to create read- and write-locks that span multiple method calls.
Triple	getRandomTriple() Returns a random triple contained in the Graph.
boolean	isEmpty()
Iterator<Triple>	iterator()
boolean	remove(Object o)
boolean	removeAll(Collection<?> c)
Triple	removeRandomTriple() Removes a random triple.
boolean	retainAll(Collection<?> c)
int	size()
Object[]	toArray()
<T> T[]	toArray(T[] a)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.apache.clerezza.Graph

equals

Methods inherited from interface java.util.Collection

hashCode, parallelStream, removeIf, spliterator, stream

Methods inherited from interface java.lang.Iterable

forEach

Field Detail

wrapped

protected Graph wrapped

Constructor Detail

RandomGraph

public RandomGraph(Graph mGraph,
                   int interconnectivity)

RandomGraph

public RandomGraph(int initialSize,
                   int interconnectivity,
                   Graph mGraph)

Creates a new random mutual graph.

Parameters:

initialSize - Determines the initial size of the content graph

interconnectivity - Determines the probability of using already existing resource when creating a new triple. The probability of using an existing resource over creating a new resouce is 1-(1/interconnectivity).

mGraph -

Method Detail

evolve

public Triple evolve()

Add or removes randomly a triple.

Returns:

the triple that was added or removed.

removeRandomTriple

public Triple removeRandomTriple()

Removes a random triple.

Returns:

the triple that was removed.

addRandomTriple

public Triple addRandomTriple()

Adds a random triple.

Returns:

the triple that was added.

getRandomTriple

public Triple getRandomTriple()

Returns a random triple contained in the Graph.

filter

public Iterator<Triple> filter(BlankNodeOrIRI subject,
                               IRI predicate,
                               RDFTerm object)

Description copied from interface: Graph

Filters triples given a pattern. filter(null, null, null) returns the same as iterator()

Specified by:

filter in interface Graph

Returns:

Iterator

size

public int size()

Specified by:

size in interface Collection<Triple>

isEmpty

public boolean isEmpty()

Specified by:

isEmpty in interface Collection<Triple>

contains

public boolean contains(Object o)

Specified by:

contains in interface Collection<Triple>

iterator

public Iterator<Triple> iterator()

Specified by:

iterator in interface Iterable<Triple>

Specified by:

iterator in interface Collection<Triple>

toArray

public Object[] toArray()

Specified by:

toArray in interface Collection<Triple>

toArray

public <T> T[] toArray(T[] a)

Specified by:

toArray in interface Collection<Triple>

add

public boolean add(Triple e)

Specified by:

add in interface Collection<Triple>

remove

public boolean remove(Object o)

Specified by:

remove in interface Collection<Triple>

containsAll

public boolean containsAll(Collection<?> c)

Specified by:

containsAll in interface Collection<Triple>

addAll

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

Specified by:

addAll in interface Collection<Triple>

removeAll

public boolean removeAll(Collection<?> c)

Specified by:

removeAll in interface Collection<Triple>

retainAll

public boolean retainAll(Collection<?> c)

Specified by:

retainAll in interface Collection<Triple>

clear

public void clear()

Specified by:

clear in interface Collection<Triple>

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

Returns:

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

getLock

public ReadWriteLock getLock()

Description copied from interface: Graph

The lock provided by this methods allows to create read- and write-locks that span multiple method calls. Having a read locks prevents other threads from writing to this Graph, having a write-lock prevents other threads from reading and writing. Implementations would typically return a java.util.concurrent.locks.ReentrantReadWriteLock. Immutable instances (such as instances of ImmutableGraph) or instances used in transaction where concurrent acces of the same instance is not an issue may return a no-op ReadWriteLock (i.e. one which returned ReadLock and WriteLock instances of which the methods do not do anything)

Specified by:

getLock in interface Graph

Returns:

the lock of this Graph