com.exasol.util

Class AbstractBottomUpTreeNode

java.lang.Object

com.exasol.util.AbstractBottomUpTreeNode

All Implemented Interfaces:

TreeNode

Direct Known Subclasses:

AbstractBooleanExpression, AbstractValueExpression

public abstract class AbstractBottomUpTreeNode
extends Object
implements TreeNode

This is an abstract base class for nodes in a tree structure.

Constructor Summary

Constructors

Constructor and Description
AbstractBottomUpTreeNode() Create a new instance of a AbstractBottomUpTreeNode that serves as leaf node for a tree.
AbstractBottomUpTreeNode(List<TreeNode> children) Create a new instance of a AbstractBottomUpTreeNode.
AbstractBottomUpTreeNode(TreeNode... children) Create a new instance of a AbstractBottomUpTreeNode.

Method Summary

Modifier and Type	Method and Description
void	addChild(TreeNode child) Add a child node below this node.
TreeNode	getChild(int index) Get child node by position in the list of siblings.
List<TreeNode>	getChildren() Get all child nodes of this node
TreeNode	getParent() Get the parent of this node
TreeNode	getRoot() Get the root of the tree
boolean	isChild() Check whether this node is a child node
boolean	isFirstSibling() Check whether a child is the first in the list of siblings
boolean	isRoot() Check whether this node is the root of the tree.

Methods inherited from class java.lang.Object

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

Constructor Detail

AbstractBottomUpTreeNode

public AbstractBottomUpTreeNode()

Create a new instance of a AbstractBottomUpTreeNode that serves as leaf node for a tree.

AbstractBottomUpTreeNode

public AbstractBottomUpTreeNode(List<TreeNode> children)

Create a new instance of a AbstractBottomUpTreeNode.

Parameters:

children - child nodes to be linked to this node.

AbstractBottomUpTreeNode

public AbstractBottomUpTreeNode(TreeNode... children)

Create a new instance of a AbstractBottomUpTreeNode.

Parameters:

children - child nodes to be linked to this node.

Method Detail

getRoot

public TreeNode getRoot()

Description copied from interface: TreeNode

Get the root of the tree

Specified by:

getRoot in interface TreeNode

Returns:

root node

getParent

public TreeNode getParent()

Description copied from interface: TreeNode

Get the parent of this node

Specified by:

getParent in interface TreeNode

Returns:

parent node

addChild

public void addChild(TreeNode child)

Description copied from interface: TreeNode

Add a child node below this node. Children are registered in the order in which they are added.

Important: this also automatically creates a link in the opposite direction. All implementations must adhere to this rule.

Specified by:

addChild in interface TreeNode

Parameters:

child - child node

getChildren

public List<TreeNode> getChildren()

Description copied from interface: TreeNode

Get all child nodes of this node

Specified by:

getChildren in interface TreeNode

Returns:

child nodes

getChild

public TreeNode getChild(int index)

Description copied from interface: TreeNode

Get child node by position in the list of siblings. The position depends on the order in which the children were added.

Specified by:

getChild in interface TreeNode

Parameters:

index - position in the list of siblings

Returns:

child node at position

isRoot

public boolean isRoot()

Description copied from interface: TreeNode

Check whether this node is the root of the tree.

Specified by:

isRoot in interface TreeNode

Returns:

true if this node is the root

isChild

public boolean isChild()

Description copied from interface: TreeNode

Check whether this node is a child node

Specified by:

isChild in interface TreeNode

Returns:

true if the node is a child of another node

isFirstSibling

public boolean isFirstSibling()

Description copied from interface: TreeNode

Check whether a child is the first in the list of siblings

Specified by:

isFirstSibling in interface TreeNode

Returns:

true if the child is the first in the list of siblings