org.apache.ambari.server.api.util

Class TreeNodeImpl<T>

java.lang.Object

org.apache.ambari.server.api.util.TreeNodeImpl<T>

All Implemented Interfaces:

TreeNode<T>

public class TreeNodeImpl<T>
extends Object
implements TreeNode<T>

Basic implementation of TreeNode.

Constructor Summary

Constructors

Constructor and Description
TreeNodeImpl(TreeNode<T> parent, T object, String name) Constructor.

Method Summary

Modifier and Type	Method and Description
TreeNode<T>	addChild(TreeNode<T> child) Add the specified child node.
TreeNode<T>	addChild(T child, String name) Add a child node for the provided object.
TreeNode<T>	getChild(String name) Find a child node by name.
Collection<TreeNode<T>>	getChildren() Obtain the list of child nodes.
String	getName() Obtain the name of the node.
T	getObject() Obtain the object associated with this node.
TreeNode<T>	getParent() Obtain the parent node or null if this node is the root.
Object	getProperty(String name) Get the specified node property.
String	getStringProperty(String name) Get the specified node property as a String.
TreeNode<T>	removeChild(String name) Remove a child from this resource.
void	removeProperty(String name) Remove a property from the node.
void	setName(String name) Set the name of the node.
void	setParent(TreeNode<T> parent) Set the parent node.
void	setProperty(String name, Object value) Set a property on the node.

Methods inherited from class java.lang.Object

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

Constructor Detail

TreeNodeImpl

public TreeNodeImpl(TreeNode<T> parent,
                    T object,
                    String name)

Constructor.

Parameters:

parent - parent node

object - associated object

name - node name

Method Detail

getParent

public TreeNode<T> getParent()

Description copied from interface: TreeNode

Obtain the parent node or null if this node is the root.

Specified by:

getParent in interface TreeNode<T>

Returns:

the parent node or null if this node is the root

getChildren

public Collection<TreeNode<T>> getChildren()

Description copied from interface: TreeNode

Obtain the list of child nodes.

Specified by:

getChildren in interface TreeNode<T>

Returns:

a list of child nodes or an empty list if a leaf node

getObject

public T getObject()

Description copied from interface: TreeNode

Obtain the object associated with this node.

Specified by:

getObject in interface TreeNode<T>

Returns:

the object associated with this node or null

setName

public void setName(String name)

Description copied from interface: TreeNode

Set the name of the node.

Specified by:

setName in interface TreeNode<T>

Parameters:

name - the name to set

getName

public String getName()

Description copied from interface: TreeNode

Obtain the name of the node.

Specified by:

getName in interface TreeNode<T>

Returns:

the name of the node or null

setParent

public void setParent(TreeNode<T> parent)

Description copied from interface: TreeNode

Set the parent node.

Specified by:

setParent in interface TreeNode<T>

Parameters:

parent - the parent node to set

addChild

public TreeNode<T> addChild(T child,
                            String name)

Description copied from interface: TreeNode

Add a child node for the provided object.

Specified by:

addChild in interface TreeNode<T>

Parameters:

child - the object associated with the new child node

name - the name of the child node

Returns:

the newly created child node

addChild

public TreeNode<T> addChild(TreeNode<T> child)

Description copied from interface: TreeNode

Add the specified child node.

Specified by:

addChild in interface TreeNode<T>

Parameters:

child - the child node to add

Returns:

the added child node

removeChild

public TreeNode<T> removeChild(String name)

Description copied from interface: TreeNode

Remove a child from this resource.

Specified by:

removeChild in interface TreeNode<T>

Parameters:

name - name of child to remove

Returns:

the previous value associated with key, or null if there was no mapping for key

setProperty

public void setProperty(String name,
                        Object value)

Description copied from interface: TreeNode

Set a property on the node.

Specified by:

setProperty in interface TreeNode<T>

Parameters:

name - the name of the property

value - the value of the property

getProperty

public Object getProperty(String name)

Description copied from interface: TreeNode

Get the specified node property.

Specified by:

getProperty in interface TreeNode<T>

Parameters:

name - property name

Returns:

the requested property value or null

getStringProperty

public String getStringProperty(String name)

Description copied from interface: TreeNode

Get the specified node property as a String.

Specified by:

getStringProperty in interface TreeNode<T>

Parameters:

name - property name

Returns:

the requested property value (as a String) or null

removeProperty

public void removeProperty(String name)

Description copied from interface: TreeNode

Remove a property from the node.

Specified by:

removeProperty in interface TreeNode<T>

Parameters:

name - name of property to be removed

getChild

public TreeNode<T> getChild(String name)

Description copied from interface: TreeNode

Find a child node by name. The name may contain '/' to delimit names to find a child more then one level deep. To find a node named 'bar' that is a child of a child named 'foo', use the name 'foo/bar'.

Specified by:

getChild in interface TreeNode<T>

Parameters:

name - the name of the child. May contain the '/' path separator.

Returns:

the requested node or null if the child was not found