org.neo4j.graphalgo.impl.util
Class WeightedPathImpl

java.lang.Object
  org.neo4j.graphalgo.impl.util.WeightedPathImpl

All Implemented Interfaces:

Iterable<PropertyContainer>, WeightedPath, Path

public class WeightedPathImpl
extends Object
implements WeightedPath

Constructor Summary

WeightedPathImpl(CostEvaluator<Double> costEvaluator, Path path)

WeightedPathImpl(double weight, Path path)

Method Summary

Node	endNode() Returns the end node of this path.
Iterator<PropertyContainer>	iterator() Iterates through both the Nodes and Relationships of this path in order.
Relationship	lastRelationship() Returns the last Relationship in this path.
int	length() Returns the length of this path.
Iterable<Node>	nodes() Returns all the nodes in this path.
Iterable<Relationship>	relationships() Returns all the relationships in between the nodes which this path consists of.
Node	startNode() Returns the start node of this path.
String	toString() Returns a natural string representation of this path.
double	weight() Returns the weight of the path.

Methods inherited from class java.lang.Object

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

Constructor Detail

WeightedPathImpl

public WeightedPathImpl(CostEvaluator<Double> costEvaluator,
                        Path path)

WeightedPathImpl

public WeightedPathImpl(double weight,
                        Path path)

Method Detail

weight

public double weight()

Description copied from interface: WeightedPath

Returns the weight of the path.

Specified by:

weight in interface WeightedPath

Returns:

the weight of the path.

startNode

public Node startNode()

Description copied from interface: Path

Returns the start node of this path. It's also the first node returned from the Path.nodes() iterable.

Specified by:

startNode in interface Path

Returns:

the start node.

endNode

public Node endNode()

Description copied from interface: Path

Returns the end node of this path. It's also the last node returned from Path.nodes() iterable. If the Path.length() of this path is 0 the end node returned by this method is the same as the start node. If a path is emitted from a traverser the end node is the current node where the traverser is at the moment.

Specified by:

endNode in interface Path

Returns:

the end node.

lastRelationship

public Relationship lastRelationship()

Description copied from interface: Path

Returns the last Relationship in this path.

Specified by:

lastRelationship in interface Path

Returns:

the last Relationship in this path, or null if this path contains no Relationships.

length

public int length()

Description copied from interface: Path

Returns the length of this path. That is the number of relationships (which is the same as the number of nodes minus one). The shortest path possible is of length 0.

Specified by:

length in interface Path

Returns:

the length (i.e. the number of relationships) in the path.

nodes

public Iterable<Node> nodes()

Description copied from interface: Path

Returns all the nodes in this path. The first node is the same as Path.startNode() and the last node is the same as Path.endNode(). In between those nodes there can be an arbitrary number of nodes. The shortest path possible is just one node, where also the the start node is the same as the end node.

Specified by:

nodes in interface Path

Returns:

the nodes in this path.

relationships

public Iterable<Relationship> relationships()

Description copied from interface: Path

Returns all the relationships in between the nodes which this path consists of.

Specified by:

relationships in interface Path

Returns:

the relationships in this path.

toString

public String toString()

Description copied from interface: Path

Returns a natural string representation of this path. The string representation shows the nodes with relationships (and their directions) in between them.

Specified by:

toString in interface Path

Overrides:

toString in class Object

Returns:

A string representation of the path.

iterator

public Iterator<PropertyContainer> iterator()

Description copied from interface: Path

Iterates through both the Nodes and Relationships of this path in order. Interleaving Nodes with Relationships, starting and ending with a Node (the Path.startNode() and Path.endNode() respectively).

Specified by:

iterator in interface Iterable<PropertyContainer>

Specified by:

iterator in interface Path

See Also:

Iterable.iterator()