org.apache.clerezza.rdf.core.test

Class RandomMGraph

java.lang.Object

org.apache.clerezza.rdf.core.test.RandomMGraph

All Implemented Interfaces:

Iterable<Triple>, Collection<Triple>, MGraph, TripleCollection

public class RandomMGraph
extends Object

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

Author:

mir

Field Summary

Fields

Modifier and Type	Field and Description
protected TripleCollection	wrapped

Constructor Summary

Constructors

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

Method Summary

Methods

Modifier and Type	Method and Description
boolean	add(Triple e)
boolean	addAll(Collection<? extends Triple> c)
void	addGraphListener(GraphListener listener, FilterTriple filter) Adds the specified GraphListener to the graph.
void	addGraphListener(GraphListener listener, FilterTriple filter, long delay) Adds the specified GraphListener to the graph.
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(NonLiteral subject, UriRef predicate, Resource object) Filters triples given a pattern.
Graph	getGraph() Returns the graph
Triple	getRandomTriple() Returns a random triple contained in the MGraph.
boolean	isEmpty()
Iterator<Triple>	iterator()
boolean	remove(Object o)
boolean	removeAll(Collection<?> c)
void	removeGraphListener(GraphListener listener) Removes the specified GraphListener from the graph.
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.rdf.core.MGraph

equals

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

addGraphListener, addGraphListener, filter, removeGraphListener

Methods inherited from interface java.util.Collection

add, addAll, clear, contains, containsAll, hashCode, isEmpty, iterator, remove, removeAll, retainAll, size, toArray, toArray

Field Detail

wrapped

protected TripleCollection wrapped

Constructor Detail

RandomMGraph

public RandomMGraph(MGraph mGraph,
            int interconnectivity)

RandomMGraph

public RandomMGraph(int initialSize,
            int interconnectivity,
            MGraph 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 MGraph.

getGraph

public Graph getGraph()

Description copied from interface: MGraph

Returns the graph

Specified by:

getGraph in interface MGraph

Returns:

graph

filter

public Iterator<Triple> filter(NonLiteral subject,
                      UriRef predicate,
                      Resource object)

Description copied from interface: TripleCollection

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

Specified by:

filter in interface TripleCollection

Returns:

Iterator

addGraphListener

public void addGraphListener(GraphListener listener,
                    FilterTriple filter,
                    long delay)

Description copied from interface: TripleCollection

Adds the specified GraphListener to the graph. This listener will be notified, when the graph is modified and the Triple that was part of the modifiaction matched the specified FilterTriple. The notification will be passed to the listener after the specified delay time (in milli-seconds) has passed. If more matching events occur during the delay period, then they are passed all together at the end of the delay period. If the the listener unregisters or the platform is stopped within the period then the already occurred events may not be delivered. All implementations support this method, immutable implementations will typically provide an empty implementation, they shall not throw an exception. Implementation of which the triples change over time without add- and remove-methods being called (e.g. implementation dynamically generating their triples on invocation of the filer-method) may choose not to, or only partially propagate their changes to the listener. They should describe the behavior in the documentation of the class. Implementations should keep weak references the listeners, so that the listener can be garbage collected if its no longer referenced by another object. If delay is 0 notification will happen synchroneously.

Specified by:

addGraphListener in interface TripleCollection

Parameters:

listener - The listener that will be notified

filter - The triple filter with which triples are tested, that were part of the modification.

delay - The time period afer which the listener will be notified in milliseconds.

addGraphListener

public void addGraphListener(GraphListener listener,
                    FilterTriple filter)

Description copied from interface: TripleCollection

Adds the specified GraphListener to the graph. This listener will be notified, when the graph is modified and the Triple that was part of the modifiaction matched the specified FilterTriple. The notification will be passed without delay. Same as addGraphListener(listener, filter, 0).

Specified by:

addGraphListener in interface TripleCollection

Parameters:

listener - The listener that will be notified

filter - The triple filter with which triples are tested, that were part of the modification.

removeGraphListener

public void removeGraphListener(GraphListener listener)

Description copied from interface: TripleCollection

Removes the specified GraphListener from the graph. This listener will no longer be notified, when the graph is modified.

Specified by:

removeGraphListener in interface TripleCollection

Parameters:

listener - The listener to be removed.

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>