Package it.unimi.dsi.big.webgraph

Class Transform.NodeClassFilter

java.lang.Object

it.unimi.dsi.big.webgraph.Transform.NodeClassFilter

All Implemented Interfaces:

Transform.ArcFilter, Transform.LabelledArcFilter

Enclosing class:

Transform

public static final class Transform.NodeClassFilter
extends java.lang.Object
implements Transform.ArcFilter, Transform.LabelledArcFilter

An arc filter that only accepts arcs whose endpoints belong to the same (if the parameter keepOnlySame is true) or to different (if keepOnlySame is false) classes. Classes are specified by one long per node, read from a given file in DataInput format.

Constructor Summary

Constructors

Constructor	Description
NodeClassFilter(java.lang.String classFile, boolean keepOnlySame)	Creates a new instance.
NodeClassFilter(java.lang.String classFile, java.lang.String keepOnlySame)	Creates a new instance.

Method Summary

Modifier and Type	Method	Description
boolean	accept(long i, long j)	Tells if the arc (i,j) has to be accepted or not.
boolean	accept(long i, long j, Label label)	Tells if the arc (i,j) with label label has to be accepted or not.

Methods inherited from class java.lang.Object

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

Constructor Detail

NodeClassFilter

public NodeClassFilter(java.lang.String classFile,
                       boolean keepOnlySame)

Creates a new instance.

Parameters:

classFile - name of the class file.

keepOnlySame - whether to keep nodes in the same class.

NodeClassFilter

public NodeClassFilter(java.lang.String classFile,
                       java.lang.String keepOnlySame)

Creates a new instance.

This constructor has the same arguments as NodeClassFilter(String,boolean), but it can be used with an ObjectParser.

Parameters:

classFile - name of the class file.

keepOnlySame - whether to keep nodes in the same class.

Method Detail

accept

public boolean accept(long i,
                      long j)

Description copied from interface: Transform.ArcFilter

Tells if the arc (i,j) has to be accepted or not.

Specified by:

accept in interface Transform.ArcFilter

Parameters:

i - the source of the arc.

j - the destination of the arc.

Returns:

if the arc has to be accepted.

accept

public boolean accept(long i,
                      long j,
                      Label label)

Description copied from interface: Transform.LabelledArcFilter

Tells if the arc (i,j) with label label has to be accepted or not.

Specified by:

accept in interface Transform.LabelledArcFilter

Parameters:

i - the source of the arc.

j - the destination of the arc.

label - the label of the arc.

Returns:

if the arc has to be accepted.