Package edu.gsu.cs.dmlab.factory

Class SequentialBasicIndexFactory

java.lang.Object

edu.gsu.cs.dmlab.factory.SequentialBasicIndexFactory

All Implemented Interfaces:

ISTIndexFactory

public class SequentialBasicIndexFactory
extends Object
implements ISTIndexFactory

This class provides a way of constructing objects for event indexing of IEvent objects, or indexing of ITrack objects, and constructing anything that those indexes might need. The indexing is based on a grid of ArrayLists, where the grid represents the space over which the index is valid. The ArrayLists in each location of the grid are used to sort the IEvent or ITrack objects that intersect each spatial coordinate based on time.

Author:

Dustin Kempton, Data Mining Lab, Georgia State University

Constructor Summary

Constructors

Constructor	Description
SequentialBasicIndexFactory(int regionDimension, int regionDiv, org.joda.time.Duration frameSpan)	Constructor, constructs a new BasicIndexFactory object (there should only be one of these objects in the application).

Method Summary

Modifier and Type	Method	Description
ISTTrackingEventIndexer	getEventIndexer(List<ISTTrackingEvent> regionalList)	Produces a new IEventIndexer that indexes the IEvent objects passed in.
ISTTrackingTrajectoryIndexer	getTrackIndexer(List<ISTTrackingTrajectory> trackList)	Produces a new ITrackIndexer that indexes the ITrack objects passed in.

Methods inherited from class java.lang.Object

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

Constructor Detail

SequentialBasicIndexFactory

public SequentialBasicIndexFactory(int regionDimension,
                                   int regionDiv,
                                   org.joda.time.Duration frameSpan)

Constructor, constructs a new BasicIndexFactory object (there should only be one of these objects in the application).

Parameters:

regionDimension - The length for both the x and y spatial domain. For example x will be valid for [0, regionDimension].

regionDiv - The divisor used to down size each of the indexed objects to fit inside the spatial domain specified by the regionDimension parameter.

frameSpan - The length of a frame in the index. This is used to compute the expected change in detections per frame in the IEventIndexer objects.

Method Detail

getEventIndexer

public ISTTrackingEventIndexer getEventIndexer(List<ISTTrackingEvent> regionalList)

Description copied from interface: ISTIndexFactory

Produces a new IEventIndexer that indexes the IEvent objects passed in.

Specified by:

getEventIndexer in interface ISTIndexFactory

Parameters:

regionalList - The IEvent objects to be indexed.

Returns:

A new IEventIndexer containing the passed in IEvnet objects.

getTrackIndexer

public ISTTrackingTrajectoryIndexer getTrackIndexer(List<ISTTrackingTrajectory> trackList)

Description copied from interface: ISTIndexFactory

Produces a new ITrackIndexer that indexes the ITrack objects passed in.

Specified by:

getTrackIndexer in interface ISTIndexFactory

Parameters:

trackList - The ISTTrackingTrajectory objects to be indexed.

Returns:

A new ITrackIndexer containing the passed in ITrack objects.