org.cripac.isee.vpe.data

Class GraphDatabaseConnector

java.lang.Object

org.cripac.isee.vpe.data.GraphDatabaseConnector

Direct Known Subclasses:

FakeDatabaseConnector, Neo4jConnector

public abstract class GraphDatabaseConnector
extends Object

The class GraphDatabaseConnector is the base class of graph databases connectors. Each node in the graph database is a pedestrian.

Author:

Ken Yu, CRIPAC, 2016

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	GraphDatabaseConnector.Link The class Link represents a link from one node to another in the graph database.

Constructor Summary

Constructors

Constructor and Description
GraphDatabaseConnector()

Method Summary

Modifier and Type	Method and Description
abstract GraphDatabaseConnector.Link[]	getLinkedPedestrians(String nodeID) Get relations: (nodA)-[SIMILARITY]-(nodeB)
abstract Attributes	getPedestrianAttributes(String nodeID) Get the attributes of a pedestrian.
abstract float	getPedestrianSimilarity(String idA, String idB) Get the similarity between two pedestrians.
abstract String	getTrackletSavingDir(String nodeID) Get the path of the directory saving the tracklet of a pedestrian.
abstract void	setPedestrianAttributes(String nodeID, Attributes attr) Set the attributes of a pedestrian.
abstract void	setPedestrianSimilarity(String idA, String idB, float similarity) Set the similarity between two pedestrians.
abstract void	setTrackletSavingPath(String nodeID, String path) Set the path of the directory saving the tracklet of a pedestrian.

Methods inherited from class java.lang.Object

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

Constructor Detail

GraphDatabaseConnector

public GraphDatabaseConnector()

Method Detail

setTrackletSavingPath

public abstract void setTrackletSavingPath(@Nonnull
                                           String nodeID,
                                           @Nonnull
                                           String path)

Set the path of the directory saving the tracklet of a pedestrian.

Parameters:

nodeID - the id of the pedestrian.

path - the path of the directory saving the tracklet of the pedestrian.

getTrackletSavingDir

public abstract String getTrackletSavingDir(@Nonnull
                                            String nodeID)
                                     throws NoSuchElementException

Get the path of the directory saving the tracklet of a pedestrian.

Parameters:

nodeID - the id of the pedestrian.

Returns:

the path of the directory saving the tracklet of the pedestrian.

Throws:

NoSuchElementException - On failure finding the pedestrian.

setPedestrianSimilarity

public abstract void setPedestrianSimilarity(@Nonnull
                                             String idA,
                                             @Nonnull
                                             String idB,
                                             float similarity)

Set the similarity between two pedestrians.

Parameters:

idA - the ID of the first pedestrian.

idB - the ID of the second pedestrian.

similarity - the similarity between them.

getPedestrianSimilarity

public abstract float getPedestrianSimilarity(@Nonnull
                                              String idA,
                                              @Nonnull
                                              String idB)
                                       throws NoSuchElementException

Get the similarity between two pedestrians.

Parameters:

idA - the ID of the first pedestrian.

idB - the ID of the second pedestrian.

Returns:

The similarity between them.

Throws:

NoSuchElementException - On failure finding any of these two pedestrian, or when there is no link between them.

setPedestrianAttributes

public abstract void setPedestrianAttributes(@Nonnull
                                             String nodeID,
                                             @Nonnull
                                             Attributes attr)

Set the attributes of a pedestrian.

Parameters:

nodeID - the ID of the pedestrian.

attr - the attributes of the pedestrian.

getPedestrianAttributes

public abstract Attributes getPedestrianAttributes(@Nonnull
                                                   String nodeID)
                                            throws NoSuchElementException

Get the attributes of a pedestrian.

Parameters:

nodeID - the ID of the pedestrian.

Returns:

the attributes of the pedestrian.

Throws:

NoSuchElementException - On failure finding the pedestrian.

getLinkedPedestrians

public abstract GraphDatabaseConnector.Link[] getLinkedPedestrians(@Nonnull
                                                                   String nodeID)
                                                            throws NoSuchElementException

Get relations: (nodA)-[SIMILARITY]-(nodeB)

Parameters:

nodeID - the ID of the pedestrian.

Returns:

the relationships related to the input pedestrian.

Throws:

NoSuchElementException - On failure finding the pedestrian.