org.apache.clerezza.implementation.graph

Class PrivilegedGraphWrapper

java.lang.Object

org.apache.clerezza.implementation.graph.PrivilegedGraphWrapper

All Implemented Interfaces:

Iterable<Triple>, Collection<Triple>, Graph

Direct Known Subclasses:

PrivilegedImmuatbleGraphWrapper

public class PrivilegedGraphWrapper
extends Object
implements Graph

Calls the methods of the wrapped Graph as privileged code, because they may need permissions like writing to disk or accessing network.

Author:

mir

Constructor Summary

Constructors

Constructor and Description
PrivilegedGraphWrapper(Graph Graph)

Method Summary

Modifier and Type	Method and Description
boolean	add(Triple triple)
boolean	addAll(Collection<? extends Triple> c)
void	clear()
boolean	contains(Object o)
boolean	containsAll(Collection<?> c)
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.
boolean	isEmpty()
Iterator<Triple>	iterator()
boolean	remove(Object o)
boolean	removeAll(Collection<?> c)
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

Constructor Detail

PrivilegedGraphWrapper

public PrivilegedGraphWrapper(Graph Graph)

Method Detail

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 triple)

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>

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

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.