Module org.jgrapht.core

Package org.jgrapht.alg.shortestpath

Class FloydWarshallShortestPaths.FloydWarshallSingleSourcePaths

java.lang.Object

org.jgrapht.alg.shortestpath.FloydWarshallShortestPaths.FloydWarshallSingleSourcePaths

All Implemented Interfaces:

ShortestPathAlgorithm.SingleSourcePaths<V,E>

Enclosing class:

FloydWarshallShortestPaths<V,E>

class FloydWarshallShortestPaths.FloydWarshallSingleSourcePaths
extends java.lang.Object
implements ShortestPathAlgorithm.SingleSourcePaths<V,E>

Field Summary

Fields

Modifier and Type	Field	Description
private V	source

Constructor Summary

Constructors

Constructor	Description
FloydWarshallSingleSourcePaths(V source)

Method Summary

Modifier and Type	Method	Description
Graph<V,E>	getGraph()	Returns the graph over which this set of paths is defined.
GraphPath<V,E>	getPath(V sink)	Return the path from the source vertex to the sink vertex.
V	getSourceVertex()	Returns the single source vertex.
double	getWeight(V sink)	Return the weight of the path from the source vertex to the sink vertex.

Methods inherited from class java.lang.Object

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

Field Detail

source

private final V source

Constructor Detail

FloydWarshallSingleSourcePaths

public FloydWarshallSingleSourcePaths(V source)

Method Detail

getGraph

public Graph<V,E> getGraph()

Description copied from interface: ShortestPathAlgorithm.SingleSourcePaths

Returns the graph over which this set of paths is defined.

Specified by:

getGraph in interface ShortestPathAlgorithm.SingleSourcePaths<V,E>

Returns:

the graph

getSourceVertex

public V getSourceVertex()

Description copied from interface: ShortestPathAlgorithm.SingleSourcePaths

Returns the single source vertex.

Specified by:

getSourceVertex in interface ShortestPathAlgorithm.SingleSourcePaths<V,E>

Returns:

the single source vertex

getWeight

public double getWeight(V sink)

Description copied from interface: ShortestPathAlgorithm.SingleSourcePaths

Return the weight of the path from the source vertex to the sink vertex. If no such path exists, Double.POSITIVE_INFINITY is returned. The weight of the path between a vertex and itself is always zero.

Specified by:

getWeight in interface ShortestPathAlgorithm.SingleSourcePaths<V,E>

Parameters:

sink - the sink vertex

Returns:

the weight of the path between source and sink vertices or Double.POSITIVE_INFINITY in case no such path exists

getPath

public GraphPath<V,E> getPath(V sink)

Description copied from interface: ShortestPathAlgorithm.SingleSourcePaths

Return the path from the source vertex to the sink vertex.

Specified by:

getPath in interface ShortestPathAlgorithm.SingleSourcePaths<V,E>

Parameters:

sink - the sink vertex

Returns:

the path from the source vertex to the sink vertex or null if no such path exists