org.geotools.index.rtree
Class Node

java.lang.Object
  org.geotools.index.rtree.Node

All Implemented Interfaces:

EntryBoundsChangeListener

Direct Known Subclasses:

DatabaseNode, FileSystemNode, FileSystemNode, MemoryNode

public abstract class Node

extends java.lang.Object

implements EntryBoundsChangeListener

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Author:

Tommaso Nolli

Field Summary

protected com.vividsolutions.jts.geom.Envelope	bounds
protected Entry[]	entries
protected int	entriesCount
protected boolean	isChanged
protected int	maxNodeEntries

Constructor Summary

Node(int maxNodeEntries)

Method Summary

void	addEntry(Entry entry) Adds an Entry to this Node
void	boundsChanged(Entry e)
void	clear() Removes all Entrys from this Node
protected abstract void	doSave() Saves this Node; called from save()
com.vividsolutions.jts.geom.Envelope	getBounds() DOCUMENT ME!
java.util.Collection	getEntries()
int	getEntriesCount() DOCUMENT ME!
Entry	getEntry(int n) Gets the nth Element
protected abstract Entry	getEntry(Node node) Returns the Entry pointing the specified Node
abstract Node	getParent() DOCUMENT ME!
boolean	isLeaf() DOCUMENT ME!
void	removeEntry(Entry entry) Removes an Entry from this Node
void	save() Saves this Node; this method calls doSave()
void	setLeaf(boolean b) DOCUMENT ME!
abstract void	setParent(Node node) Sets the parent of this Node

Methods inherited from class java.lang.Object

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

Field Detail

entriesCount

protected int entriesCount

maxNodeEntries

protected int maxNodeEntries

bounds

protected com.vividsolutions.jts.geom.Envelope bounds

entries

protected Entry[] entries

isChanged

protected boolean isChanged

Constructor Detail

Node

public Node(int maxNodeEntries)

Method Detail

addEntry

public final void addEntry(Entry entry)

Adds an Entry to this Node

Parameters:

entry -

removeEntry

public final void removeEntry(Entry entry)

Removes an Entry from this Node

Parameters:

entry - The Entry to remove

clear

public void clear()

Removes all Entrys from this Node

isLeaf

public boolean isLeaf()

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Returns:

setLeaf

public void setLeaf(boolean b)

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Parameters:

b -

getEntriesCount

public int getEntriesCount()

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Returns:

getEntry

public Entry getEntry(int n)

Gets the nth Element

Parameters:

n -

Returns:

getEntries

public java.util.Collection getEntries()

getBounds

public com.vividsolutions.jts.geom.Envelope getBounds()

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Returns:

The bounds

boundsChanged

public void boundsChanged(Entry e)

Specified by:

boundsChanged in interface EntryBoundsChangeListener

See Also:

EntryBoundsChangeListener.boundsChanged(org.geotools.index.rtree.Entry)

save

public final void save()
                throws TreeException

Saves this Node; this method calls doSave()

Throws:

TreeException

getParent

public abstract Node getParent()
                        throws TreeException

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Returns:

Throws:

TreeException - DOCUMENT ME!

setParent

public abstract void setParent(Node node)

Sets the parent of this Node

Parameters:

node - The parent Node

getEntry

protected abstract Entry getEntry(Node node)

Returns the Entry pointing the specified Node

Parameters:

node - The Node

Returns:

The Entry

doSave

protected abstract void doSave()
                        throws TreeException

Saves this Node; called from save()

Throws:

TreeException