utils.index
Class Index

java.lang.Object
  utils.index.Index

public abstract class Index

extends java.lang.Object

An abstract class for indexing objects in an area. A factory is provided to easily exchange the implementation.

Nested Class Summary

class

Index.Iterator

Constructor Summary

protected

Index()

Method Summary

abstract void	add(Area area, java.lang.Object unit) add an object to the index.
protected void	add(java.lang.Object unit)
abstract java.lang.Object	get(Cartesian coordinates) get the first object of the index whose area covers the given point.
Index.Iterator	iterator()
static Index	newIndex(WGS84 origin)

Methods inherited from class java.lang.Object

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

Constructor Detail

Index

protected Index()

Method Detail

newIndex

public static Index newIndex(WGS84 origin)

iterator

public Index.Iterator iterator()

add

public abstract void add(Area area,
                         java.lang.Object unit)

add an object to the index.

Parameters:

area - the area this object covers. This object is modified, so provide a copy if you need it untouched.

unit - the object itself

get

public abstract java.lang.Object get(Cartesian coordinates)

get the first object of the index whose area covers the given point.

add

protected void add(java.lang.Object unit)