DexNet  4.8.2
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com.sparsity.dex.algorithms.SinglePairShortestPath Class Reference

SinglePairShortestPath class. More...

Inheritance diagram for com.sparsity.dex.algorithms.SinglePairShortestPath:
Inheritance graph
Collaboration diagram for com.sparsity.dex.algorithms.SinglePairShortestPath:
Collaboration graph

Public Member Functions

bool Exists ()
 Returns TRUE If a path exists or FALSE otherwise.
 
void Run ()
 Runs the algorithm. More...
 
void AddEdgeType (int t, com.sparsity.dex.gdb.EdgesDirection d)
 Allows for traversing edges of the given type. More...
 
void AddNodeType (int t)
 Allows for traversing nodes of the given type. More...
 
com.sparsity.dex.gdb.OIDList GetPathAsEdges ()
 Gets the shortest path between the source node and the destination node as an ordered set of edges. More...
 
void ExcludeEdges (com.sparsity.dex.gdb.Objects edges)
 Set which edges can't be used. More...
 
void AddAllNodeTypes ()
 Allows for traversing all node types of the graph.
 
void AddAllEdgeTypes (com.sparsity.dex.gdb.EdgesDirection d)
 Allows for traversing all edge types of the graph. More...
 
void ExcludeNodes (com.sparsity.dex.gdb.Objects nodes)
 Set which nodes can't be used. More...
 
double GetCost ()
 Gets the cost of the shortest path. More...
 
com.sparsity.dex.gdb.OIDList GetPathAsNodes ()
 Gets the shortest path between the source node and the destination node as an ordered set of nodes. More...
 
void SetMaximumHops (int maxhops)
 Sets the maximum hops restriction. More...
 
boolean IsClosed ()
 Gets if ShortestPath instance has been closed or not. More...
 
void Close ()
 Closes the ShortestPath instance. More...
 

Detailed Description

SinglePairShortestPath class.

Classes implementing this abstract class solve the shortest path problem in a graph from a given source node and to a given destination node.

Check out the 'Algorithms' section in the DEX User Manual for more details on this.

Author
Sparsity Technologies http://www.sparsity-technologies.com

Member Function Documentation

void com.sparsity.dex.algorithms.SinglePairShortestPath.AddAllEdgeTypes ( com.sparsity.dex.gdb.EdgesDirection  d)

Allows for traversing all edge types of the graph.

Parameters
d[in] Edge direction.
void com.sparsity.dex.algorithms.SinglePairShortestPath.AddEdgeType ( int  t,
com.sparsity.dex.gdb.EdgesDirection  d 
)

Allows for traversing edges of the given type.

Parameters
t[in] Edge type.
d[in] Edge direction.
void com.sparsity.dex.algorithms.SinglePairShortestPath.AddNodeType ( int  t)

Allows for traversing nodes of the given type.

Parameters
tnull
void com.sparsity.dex.algorithms.ShortestPath.Close ( )
inherited

Closes the ShortestPath instance.

It must be called to ensure the integrity of all data.

void com.sparsity.dex.algorithms.SinglePairShortestPath.ExcludeEdges ( com.sparsity.dex.gdb.Objects  edges)

Set which edges can't be used.

This will replace any previously specified set of excluded edges. Should only be used to exclude the usage of specific edges from allowed edge types because it's less efficient than not allowing an edge type.

Parameters
edges[in] A set of edge identifiers that must be kept intact until the destruction of the class.
void com.sparsity.dex.algorithms.SinglePairShortestPath.ExcludeNodes ( com.sparsity.dex.gdb.Objects  nodes)

Set which nodes can't be used.

This will replace any previously specified set of excluded nodes. Should only be used to exclude the usage of specific nodes from allowed node types because it's less efficient than not allowing a node type.

Parameters
nodes[in] A set of node identifiers that must be kept intact until the destruction of the class.
double com.sparsity.dex.algorithms.SinglePairShortestPath.GetCost ( )

Gets the cost of the shortest path.

The cost for unweighted algorithms is the number of hops of the shortest path. For weighted algoritms, the cost is the sum of the costs of the edges of the shortest path.

Returns
The cost of the shortest path.
com.sparsity.dex.gdb.OIDList com.sparsity.dex.algorithms.SinglePairShortestPath.GetPathAsEdges ( )

Gets the shortest path between the source node and the destination node as an ordered set of edges.

Returns
Ordered set of edge identifiers.
com.sparsity.dex.gdb.OIDList com.sparsity.dex.algorithms.SinglePairShortestPath.GetPathAsNodes ( )

Gets the shortest path between the source node and the destination node as an ordered set of nodes.

Returns
Ordered set of node identifiers.
boolean com.sparsity.dex.algorithms.ShortestPath.IsClosed ( )
inherited

Gets if ShortestPath instance has been closed or not.

See Also
Close()
Returns
TRUE if the ShortestPath instance has been closed, FALSE otherwise.
void com.sparsity.dex.algorithms.SinglePairShortestPath.Run ( )

Runs the algorithm.

This method can only be called once.

void com.sparsity.dex.algorithms.SinglePairShortestPath.SetMaximumHops ( int  maxhops)

Sets the maximum hops restriction.

All paths longer than the maximum hops restriction will be ignored. m[in] The maximum hops restriction. It must be positive or zero. Zero, the default value, means unlimited.

Parameters
maxhopsnull