org.jgrapht

Interface GraphPath<V,E>

Type Parameters:

V - the graph vertex type

E - the graph edge type

All Known Implementing Classes:

GraphWalk

public interface GraphPath<V,E>

A GraphPath represents a path in a Graph. Unlike some definitions, the path is not required to be a Simple Path.

Since:

Jan 1, 2008

Author:

John Sichi

Method Summary

Modifier and Type	Method and Description
default List<E>	getEdgeList() Returns the edges making up the path.
V	getEndVertex() Returns the end vertex in the path.
Graph<V,E>	getGraph() Returns the graph over which this path is defined.
default int	getLength() Returns the length of the path, measured in the number of edges.
V	getStartVertex() Returns the start vertex in the path.
default List<V>	getVertexList() Returns the path as a sequence of vertices.
double	getWeight() Returns the weight assigned to the path.

Method Detail

getGraph

Graph<V,E> getGraph()

Returns the graph over which this path is defined. The path may also be valid with respect to other graphs.

Returns:

the containing graph

getStartVertex

V getStartVertex()

Returns the start vertex in the path.

Returns:

the start vertex

getEndVertex

V getEndVertex()

Returns the end vertex in the path.

Returns:

the end vertex

getEdgeList

default List<E> getEdgeList()

Returns the edges making up the path. The first edge in this path is incident to the start vertex. The last edge is incident to the end vertex. The vertices along the path can be obtained by traversing from the start vertex, finding its opposite across the first edge, and then doing the same successively across subsequent edges; see getVertexList().

Whether or not the returned edge list is modifiable depends on the path implementation.

Returns:

list of edges traversed by the path

getVertexList

default List<V> getVertexList()

Returns the path as a sequence of vertices.

Returns:

path, denoted by a list of vertices

getWeight

double getWeight()

Returns the weight assigned to the path. Typically, this will be the sum of the weights of the edge list entries (as defined by the containing graph), but some path implementations may use other definitions.

Returns:

the weight of the path

getLength

default int getLength()

Returns the length of the path, measured in the number of edges.

Returns:

the length of the path, measured in the number of edges