org.proteios.util
Class Tree.Entry<E>

java.lang.Object
  org.proteios.util.Tree.Entry<E>

Enclosing class:

Tree<E>

public static class Tree.Entry<E>
extends Object

Represents an entry for a node in the tree. The entry contains information about the parent and child nodes, and the depth of the entry within the tree.

Method Summary

void	addChild(E child) Add a child to the node.
List<Tree.Entry<E>>	getChildren() Get the list of entries for the children to this node.
int	getDepth() Get the depth of this entry within the tree.
E	getNode() Get the node element object.
int	getNumChildren() Get the number of children added to this node.
Tree.Entry<E>	getParent() Get the entry for the parent node.
boolean	isFirstChild(E child) Check if the specified object is the first child to this node.
boolean	isLastChild(E child) Check if the specified object is the last child to this node.

Methods inherited from class java.lang.Object

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

Method Detail

getNode

public E getNode()

Get the node element object.

Returns:

Object

getParent

public Tree.Entry<E> getParent()

Get the entry for the parent node.

Returns:

An Entry object or null if this is the root entry

getDepth

public int getDepth()

Get the depth of this entry within the tree. The root node is at depth 0.

Returns:

The depth starting with 0 at the root node

addChild

public void addChild(E child)

Add a child to the node.

Parameters:

child - The child to add

Throws:

IllegalArgumentException - If the child already exists in the tree

getNumChildren

public int getNumChildren()

Get the number of children added to this node.

Returns:

The number of children

getChildren

public List<Tree.Entry<E>> getChildren()

Get the list of entries for the children to this node.

Returns:

A List containing the entries for the children or null if no children has been added to this node

isFirstChild

public boolean isFirstChild(E child)

Check if the specified object is the first child to this node.

Parameters:

child - The object to check

Returns:

TRUE if the object is the first child, FALSE otherwise

isLastChild

public boolean isLastChild(E child)

Check if the specified object is the last child to this node.

Parameters:

child - The object to check

Returns:

TRUE if the object is the last child, FALSE otherwise