org.jgrapht.generate

Class CompleteGraphGenerator<V,E>

java.lang.Object

org.jgrapht.generate.CompleteGraphGenerator<V,E>

All Implemented Interfaces:

GraphGenerator<V,E,V>

public class CompleteGraphGenerator<V,E>
extends Object
implements GraphGenerator<V,E,V>

Generates a complete graph of any size. A complete graph is a graph where every vertex shares an edge with every other vertex. If it is a directed graph, then edges must always exist in both directions. On a side note, a complete graph is the least efficient possible graph in terms of memory and cpu usage. Note: This contructor was designed for a simple undirected or directed graph. It will act strangely when used with certain graph types, such as undirected multigraphs. Note, though, that a complete undirected multigraph is rather senseless -- you can keep adding edges and the graph is never truly complete.

Since:

Nov 02, 2008

Author:

Tim Shearouse

Constructor Summary

Constructors

Constructor and Description
CompleteGraphGenerator(int size) Construct a new CompleteGraphGenerator.

Method Summary

Methods

Modifier and Type	Method and Description
void	generateGraph(Graph<V,E> target, VertexFactory<V> vertexFactory, Map<String,V> resultMap) Generate a graph structure.

Methods inherited from class java.lang.Object

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

Constructor Detail

CompleteGraphGenerator

public CompleteGraphGenerator(int size)

Construct a new CompleteGraphGenerator.

Parameters:

size - number of vertices to be generated

Throws:

IllegalArgumentException - if the specified size is negative.

Method Detail

generateGraph

public void generateGraph(Graph<V,E> target,
                 VertexFactory<V> vertexFactory,
                 Map<String,V> resultMap)

Generate a graph structure. The topology of the generated graph is dependent on the implementation. For graphs in which not all vertices share the same automorphism equivalence class, the generator may produce a labeling indicating the roles played by generated elements. This is the purpose of the resultMap parameter. For example, a generator for a wheel graph would designate a hub vertex. Role names used as keys in resultMap should be declared as public static final Strings by implementation classes.

Specified by:

generateGraph in interface GraphGenerator<V,E,V>

Parameters:

target - receives the generated edges and vertices; if this is non-empty on entry, the result will be a disconnected graph since generated elements will not be connected to existing elements

vertexFactory - called to produce new vertices

resultMap - if non-null, receives implementation-specific mappings from String roles to graph elements (or collections of graph elements)