org.apache.clerezza.implementation.in_memory

Class SimpleGraph

java.lang.Object

java.util.AbstractCollection<Triple>

org.apache.clerezza.implementation.graph.AbstractGraph

org.apache.clerezza.implementation.in_memory.SimpleGraph

All Implemented Interfaces:

Iterable<Triple>, Collection<Triple>, Graph

public class SimpleGraph
extends AbstractGraph

For now this is a minimalistic implementation, without any indexes or other optimizations.

Author:

reto

Constructor Summary

Constructors

Constructor and Description
SimpleGraph() Creates an empty SimpleGraph
SimpleGraph(Collection<Triple> baseCollection) Creates a SimpleGraph for the specified collection of triples, subsequent modification of baseSet do not affect the created instance.
SimpleGraph(Iterator<Triple> iterator) Creates a SimpleGraph using the passed iterator, the iterator is consumed before the constructor returns
SimpleGraph(Set<Triple> baseSet) Creates a SimpleGraph for the specified set of triples, subsequent modification of baseSet do affect the created instance.

Method Summary

Modifier and Type	Method and Description
ImmutableGraph	getImmutableGraph() Returns an ImutableGraph describing the graph at the current point in time.
boolean	performAdd(Triple e)
Iterator<Triple>	performFilter(BlankNodeOrIRI subject, IRI predicate, RDFTerm object)
int	performSize()
void	setCheckConcurrency(boolean bool) Specifies whether or not to throw ConcurrentModificationExceptions, if this simple triple collection is modified concurrently.

Methods inherited from class org.apache.clerezza.implementation.graph.AbstractGraph

add, addAll, clear, contains, containsAll, equals, filter, getLock, isEmpty, iterator, performAddAll, performClear, performContains, performContainsAll, performGetImmutableGraph, performIsEmpty, performIterator, performRemove, performRemoveAll, performRetainAll, performToArray, performToArray, remove, removeAll, retainAll, size, toArray, toArray

Methods inherited from class java.util.AbstractCollection

toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Collection

hashCode, parallelStream, removeIf, spliterator, stream

Methods inherited from interface java.lang.Iterable

forEach

Constructor Detail

SimpleGraph

public SimpleGraph()

Creates an empty SimpleGraph

SimpleGraph

public SimpleGraph(Iterator<Triple> iterator)

Creates a SimpleGraph using the passed iterator, the iterator is consumed before the constructor returns

Parameters:

iterator -

SimpleGraph

public SimpleGraph(Set<Triple> baseSet)

Creates a SimpleGraph for the specified set of triples, subsequent modification of baseSet do affect the created instance.

Parameters:

baseSet -

SimpleGraph

public SimpleGraph(Collection<Triple> baseCollection)

Creates a SimpleGraph for the specified collection of triples, subsequent modification of baseSet do not affect the created instance.

Parameters:

baseSet -

Method Detail

performSize

public int performSize()

Specified by:

performSize in class AbstractGraph

performFilter

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

Specified by:

performFilter in class AbstractGraph

performAdd

public boolean performAdd(Triple e)

Overrides:

performAdd in class AbstractGraph

setCheckConcurrency

public void setCheckConcurrency(boolean bool)

Specifies whether or not to throw ConcurrentModificationExceptions, if this simple triple collection is modified concurrently. Concurrency check is set to false by default.

Parameters:

bool - Specifies whether or not to check concurrent modifications.

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.