Package it.unimi.dsi.big.webgraph

Class Transform.BatchGraph

java.lang.Object

it.unimi.dsi.big.webgraph.ImmutableGraph

it.unimi.dsi.big.webgraph.ImmutableSequentialGraph

it.unimi.dsi.big.webgraph.Transform.BatchGraph

All Implemented Interfaces:

FlyweightPrototype<ImmutableGraph>

Enclosing class:

Transform

public static final class Transform.BatchGraph
extends ImmutableSequentialGraph

Nested Class Summary

Nested classes/interfaces inherited from class it.unimi.dsi.big.webgraph.ImmutableGraph

ImmutableGraph.LoadMethod

Field Summary

Fields inherited from class it.unimi.dsi.big.webgraph.ImmutableGraph

GRAPHCLASS_PROPERTY_KEY, NUMBER_OF_THREADS_PROPERTY, PROPERTIES_EXTENSION

Constructor Summary

Constructors

Constructor	Description
BatchGraph(long n, long m, ObjectArrayList<File> batches)

Method Summary

Modifier and Type	Method	Description
Transform.BatchGraph	copy()	Throws an UnsupportedOperationException.
protected void	finalize()
boolean	hasCopiableIterators()	Whether the node iterators returned by this graph support NodeIterator.copy(long).
NodeIterator	nodeIterator()	Returns a node iterator for scanning the graph sequentially, starting from the first node.
long	numArcs()	Returns the number of arcs of this graph (optional operation).
long	numNodes()	Returns the number of nodes of this graph.

Methods inherited from class it.unimi.dsi.big.webgraph.ImmutableSequentialGraph

nodeIterator, outdegree, randomAccess, successorBigArray

Methods inherited from class it.unimi.dsi.big.webgraph.ImmutableGraph

basename, equals, hashCode, intNumNodes, load, load, load, loadMapped, loadMapped, loadOffline, loadOffline, loadOnce, loadSequential, loadSequential, outdegrees, splitNodeIterators, store, store, successors, toString, wrap, wrap

Methods inherited from class java.lang.Object

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

Constructor Details

BatchGraph

public BatchGraph(long n,
 long m,
 ObjectArrayList<File> batches)

Method Details

numNodes

public long numNodes()

Description copied from class: ImmutableGraph

Returns the number of nodes of this graph.

Albeit this method is not optional, it is allowed that this method throws an UnsupportedOperationException if this graph has never been entirely traversed using a node iterator. This apparently bizarre behaviour is necessary to support implementations as ArcListASCIIGraph, which do not know the actual number of nodes until a traversal has been completed.

Specified by:

numNodes in class ImmutableGraph

Returns:

the number of nodes.

numArcs

public long numArcs()

Description copied from class: ImmutableGraph

Returns the number of arcs of this graph (optional operation).

Overrides:

numArcs in class ImmutableGraph

Returns:

the number of arcs.

hasCopiableIterators

public boolean hasCopiableIterators()

Description copied from class: ImmutableGraph

Whether the node iterators returned by this graph support NodeIterator.copy(long).

Overrides:

hasCopiableIterators in class ImmutableGraph

Returns:

true if this graph provides copiable iterators.

copy

public Transform.BatchGraph copy()

Description copied from class: ImmutableSequentialGraph

Throws an UnsupportedOperationException.

Specified by:

copy in interface FlyweightPrototype<ImmutableGraph>

Overrides:

copy in class ImmutableSequentialGraph

Returns:

a flyweight copy of this immutable graph.

See Also:

• FlyweightPrototype

nodeIterator

public NodeIterator nodeIterator()

Description copied from class: ImmutableGraph

Returns a node iterator for scanning the graph sequentially, starting from the first node.

Overrides:

nodeIterator in class ImmutableGraph

Returns:

a NodeIterator for accessing nodes and successors sequentially.

finalize

protected void finalize()
                 throws Throwable

Overrides:

finalize in class Object

Throws:

Throwable