org.graphstream.algorithm.generator
Class BananaTreeGenerator

java.lang.Object
  org.graphstream.stream.SourceBase
      org.graphstream.algorithm.generator.BaseGenerator
          org.graphstream.algorithm.generator.BananaTreeGenerator

All Implemented Interfaces:

Generator, org.graphstream.stream.Source

public class BananaTreeGenerator
extends BaseGenerator

Banana tree generator. A (n,k)-banana tree is composed of a root node and n k-stars with one leaf of each star connected to the root node.

Scientific Reference :

Chen, W. C.; Lü, H. I.; and Yeh, Y. N. "Operations of Interlaced Trees and Graceful Trees." Southeast Asian Bull. Math. 21, 337-348, 1997.

Nested Class Summary

Nested classes/interfaces inherited from class org.graphstream.stream.SourceBase

org.graphstream.stream.SourceBase.ElementType

Constructor Summary

BananaTreeGenerator()
Build a new Banana tree generator with default star size.

BananaTreeGenerator(int k)
Build a new Banana tree generator composing of k-stars.

Method Summary

void	begin() Begin the graph generation.
boolean	nextEvents() Perform the next step in generating the graph.

Methods inherited from class org.graphstream.algorithm.generator.BaseGenerator

addEdgeAttribute, addEdgeLabels, addNodeAttribute, addNodeLabels, end, isUsingInternalGraph, removeEdgeAttribute, removeNodeAttribute, setDirectedEdges, setEdgeAttributesRange, setNodeAttributesRange, setRandomSeed, setUseInternalGraph

Methods inherited from class org.graphstream.stream.SourceBase

addAttributeSink, addElementSink, addSink, attributeSinks, clearAttributeSinks, clearElementSinks, clearSinks, elementSinks, removeAttributeSink, removeElementSink, removeSink, sendAttributeChangedEvent, sendAttributeChangedEvent, sendEdgeAdded, sendEdgeAdded, sendEdgeRemoved, sendEdgeRemoved, sendGraphCleared, sendGraphCleared, sendNodeAdded, sendNodeAdded, sendNodeRemoved, sendNodeRemoved, sendStepBegins, sendStepBegins

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.graphstream.stream.Source

addAttributeSink, addElementSink, addSink, clearAttributeSinks, clearElementSinks, clearSinks, removeAttributeSink, removeElementSink, removeSink

Constructor Detail

BananaTreeGenerator

public BananaTreeGenerator()

Build a new Banana tree generator with default star size.

BananaTreeGenerator

public BananaTreeGenerator(int k)

Build a new Banana tree generator composing of k-stars.

Parameters:

k - size of star

Method Detail

begin

public void begin()

Description copied from interface: Generator

Begin the graph generation. This usually is the place for initialization of the generator. After calling this method, call the Generator.nextEvents() method to add elements to the graph.

nextEvents

public boolean nextEvents()

Description copied from interface: Generator

Perform the next step in generating the graph. While this method returns true, there are still more elements to add to the graph to generate it. Be careful that some generators never return false here, since they can generate graphs of arbitrary size. For such generators, simply stop calling this method when enough elements have been generated. A call to this method can produce an undetermined number of nodes and edges. Checking nodes count is advisable when generating the graph to avoid an unwanted big graph.

Returns:

true while there are elements to add to the graph.