org.deegree.io.quadtree
Interface Node<T>

All Known Implementing Classes:

DBNode, MemPointNode

interface Node<T>

TODO add documentation here

Version:

$Revision: 18195 $, $Date: 2009-06-18 17:55:39 +0200 (Do, 18. Jun 2009) $

Author:

Andreas Poth , last edited by: $Author: mschneider $

Method Summary

boolean	delete(T item, Envelope itemsEnvelope) deletes a specific item from the tree (not the item itself will be deleted, just its reference will be.
void	deleteRange(Envelope envelope) deletes all references of items whose envelope intersects with the passed one (
String	getId()
boolean	insert(T item, Envelope itemEnv) inserts a new item into the quadtree
List<T>	query(Envelope searchEnv, List<T> visitor, int level) returns a List containing all items whose envelope intersects with the passed one
boolean	update(T item, Envelope newBBox) Updates the spatial reference of the given item.

Method Detail

getId

String getId()

Returns:

the id of the Node

insert

boolean insert(T item,
               Envelope itemEnv)
               throws Exception

inserts a new item into the quadtree

Parameters:

item - (or it's id) which shall be inserted into the quadtree.

itemEnv - the bbox of the item

Returns:

true if the insertion occurred false otherwise.

Throws:

Exception - if an error occurred while inserting the specified node.

query

List<T> query(Envelope searchEnv,
              List<T> visitor,
              int level)
              throws Exception

returns a List containing all items whose envelope intersects with the passed one

Parameters:

searchEnv -

visitor -

level -

Returns:

a List containing all items whose envelope intersects with the passed one

Throws:

Exception - if an error occurred while acquiring all nodes.

delete

boolean delete(T item,
               Envelope itemsEnvelope)
               throws Exception

deletes a specific item from the tree (not the item itself will be deleted, just its reference will be.

Parameters:

item - (or it's ide) to be deleted

itemsEnvelope - bbox of the item

Returns:

true if the deletion occurred false otherwise.

Throws:

Exception - if an error occurred while deleting the specified node.

update

boolean update(T item,
               Envelope newBBox)

Updates the spatial reference of the given item.

Parameters:

item - which spatial reference in the quadtree should be updated.

newBBox - newBBox the new BBoundingbox of the item.

Returns:

true if the update occurred, false otherwise

deleteRange

void deleteRange(Envelope envelope)

deletes all references of items whose envelope intersects with the passed one (

Parameters:

envelope -

See Also:

)