EmptyDataNode (Starjava Datanode API)

java.lang.Object
- uk.ac.starlink.datanode.nodes.DefaultDataNode
- - uk.ac.starlink.datanode.nodes.EmptyDataNode

All Implemented Interfaces:: DataNode

public class EmptyDataNode
extends DefaultDataNode

Blank node.

Constructor Summary

Constructors
Constructor and Description

EmptyDataNode()

Constructors
Constructor and Description
`EmptyDataNode()`

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`boolean`	`allowsChildren()` The `DefaultDataNode` implementation of this method returns `false`.
`java.util.Iterator`	`getChildIterator()` The `DefaultDataNode` implementation of this method throws `UnsupportedOperationException` (`DefaultDataNode.allowsChildren()` is false).
`java.lang.String`	`getName()` Gets the name of this object.
`java.lang.String`	`toString()`

Methods inherited from class uk.ac.starlink.datanode.nodes.DefaultDataNode
beep, configureDetail, getChildMaker, getCreator, getDataObject, getDescription, getIcon, getLabel, getNodeTLA, getNodeType, getParentObject, getPathElement, getPathSeparator, hasDataObject, makeChild, makeErrorChild, registerDataObject, setChildMaker, setCreator, setDescription, setIconID, setLabel, setName, setParentObject

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

- Constructor Detail
  - EmptyDataNode
```
public EmptyDataNode()
```
- Method Detail
  - allowsChildren
```
public boolean allowsChildren()
```
    Description copied from class: DefaultDataNode
    
    The DefaultDataNode implementation of this method returns false.
    
    Specified by:
    
    allowsChildren in interface DataNode
    
    Overrides:
    
    allowsChildren in class DefaultDataNode
    
    Returns:
    
    true if the node is of a type which can have child nodes, false otherwise
  - getChildIterator
```
public java.util.Iterator getChildIterator()
```
    Description copied from class: DefaultDataNode
    
    The DefaultDataNode implementation of this method throws UnsupportedOperationException (DefaultDataNode.allowsChildren() is false).
    
    Specified by:
    
    getChildIterator in interface DataNode
    
    Overrides:
    
    getChildIterator in class DefaultDataNode
    
    Returns:
    
    an Iterator over the children. Each object iterated over should be a DataNode. Behaviour is undefined if this method is called on an object for which allowsChildren returns false.
  - getName
```
public java.lang.String getName()
```
    Description copied from interface: DataNode
    
    Gets the name of this object. This is an intrinsic property of the object.
    
    Specified by:
    
    getName in interface DataNode
    
    Overrides:
    
    getName in class DefaultDataNode
    
    Returns:
    
    the name of the object
  - toString
```
public java.lang.String toString()
```
    Overrides:
    
    toString in class DefaultDataNode

Class EmptyDataNode

Constructor Summary

Method Summary

Methods inherited from class uk.ac.starlink.datanode.nodes.DefaultDataNode

Methods inherited from class java.lang.Object

Constructor Detail

EmptyDataNode

Method Detail

allowsChildren

getChildIterator

getName

toString