EmptyGraphGenerator (JGraphT : a free Java graph library)

java.lang.Object
- org._3pq.jgrapht.generate.EmptyGraphGenerator

All Implemented Interfaces:

GraphGenerator
```
public class EmptyGraphGenerator
extends java.lang.Object
implements GraphGenerator
```
Generates an empty graph of any size. An empty graph is a graph that has no edges.

Since:

Sep 16, 2003

Author:

John V. Sichi

Constructor Summary

Constructors
Constructor and Description

EmptyGraphGenerator(int size)
Construct a new EmptyGraphGenerator.

Constructors
Constructor and Description
`EmptyGraphGenerator(int size)` Construct a new EmptyGraphGenerator.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`void`	`generateGraph(Graph target, VertexFactory vertexFactory, java.util.Map 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
  - EmptyGraphGenerator
```
public EmptyGraphGenerator(int size)
```
    Construct a new EmptyGraphGenerator.
    
    Parameters:
    
    size - number of vertices to be generated
    
    Throws:
    
    java.lang.IllegalArgumentException - if the specified size is negative.
- Method Detail
  - generateGraph
```
public void generateGraph(Graph target,
                          VertexFactory vertexFactory,
                          java.util.Map 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
    
    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)

Class EmptyGraphGenerator

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

EmptyGraphGenerator

Method Detail

generateGraph