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com.tangosol.util
Class AbstractSparseArray.Node

java.lang.Object
com.tangosol.util.AbstractSparseArray.Node

All Implemented Interfaces:

Serializable, Cloneable

Direct Known Subclasses:

PrimitiveSparseArray.PrimitiveNode, SparseArray.ObjectNode

Enclosing class:

AbstractSparseArray

protected abstract static class AbstractSparseArray.Node

extends Object

implements Cloneable, Serializable

An AVL tree node. This class is used only within the AbstractSparseArray class and its derivations.

Field Summary

protected int	balance The AVL balance factor of the sub-tree.
protected long	key The key of the node.
protected AbstractSparseArray.Node	left The left child of this node.
protected AbstractSparseArray.Node	parent The parent of this node.
protected AbstractSparseArray.Node	right The right child of this node.

Constructor Summary

protected

AbstractSparseArray.Node()

Method Summary

protected void	adopt(AbstractSparseArray.Node child, boolean fLeft) Adopt a child node
Object	clone() Make a shallow copy of the node and its sub-nodes.
abstract Object	getValue() Get the value associated with the node.
protected boolean	isLeaf() Determine if this node is a part of a 2-3-4 leaf node (i.e. at least one null child).
protected boolean	isLinked() Return true iff the node is linked to other nodes.
protected void	print() Print the tree structure.
abstract Object	setValue(Object oValue) Set the value associated with the node.
String	toString() Provide a string representation of this node's value.
protected int	validate() Validate the tree rooted at node is a proper AVL tree.

Field Detail

key

protected long key

The key of the node. The key, once set, is considered immutable.

parent

protected AbstractSparseArray.Node parent

The parent of this node.

left

protected AbstractSparseArray.Node left

The left child of this node.

right

protected AbstractSparseArray.Node right

The right child of this node.

balance

protected int balance

The AVL balance factor of the sub-tree.

Constructor Detail

AbstractSparseArray.Node

protected AbstractSparseArray.Node()

Method Detail

adopt

protected void adopt(AbstractSparseArray.Node child,
                     boolean fLeft)

Adopt a child node

Parameters:

child - the child to adopt

fLeft - the position of the child

getValue

public abstract Object getValue()

Get the value associated with the node.

Returns:

the value associated with the node.

setValue

public abstract Object setValue(Object oValue)

Set the value associated with the node.

Parameters:

oValue - the value assocaited with the node

Returns:

the old value associated with the node

toString

public String toString()

Provide a string representation of this node's value.

clone

public Object clone()

Make a shallow copy of the node and its sub-nodes.

isLeaf

protected boolean isLeaf()

Determine if this node is a part of a 2-3-4 leaf node (i.e. at least one null child).

Returns:

true if this node is a leaf

isLinked

protected boolean isLinked()

Return true iff the node is linked to other nodes.

Returns:

true iff the node has a parent or children

print

protected void print()

Print the tree structure.

validate

protected int validate()

Validate the tree rooted at node is a proper AVL tree.

Returns:

the height of the node within the tree

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