java.lang.Object
- uk.ac.starlink.datanode.nodes.DefaultDataNode
- - uk.ac.starlink.datanode.nodes.HDUDataNode
  - - uk.ac.starlink.datanode.nodes.ImageHDUDataNode

All Implemented Interfaces:

DataNode
```
public class ImageHDUDataNode
extends HDUDataNode
```
An implementation of the DataNode interface for representing Header and Data Units (HDUs) in FITS files.

Version:

$Id$

Author:

Mark Taylor (Starlink)

Constructor Summary

Constructors
Constructor	Description
`ImageHDUDataNode(nom.tam.fits.Header hdr, FITSDataNode.ArrayDataMaker hdudata)`	Initialises an `ImageHDUDataNode` from a `Header` object.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`boolean`	`allowsChildren()`	The `DefaultDataNode` implementation of this method returns `false`.
`void`	`configureDetail(DetailViewer dv)`	No custom configuration is performed.
`java.util.Iterator`	`getChildIterator()`	The `DefaultDataNode` implementation of this method throws `UnsupportedOperationException` (`DefaultDataNode.allowsChildren()` is false).
`java.lang.Object`	`getDataObject(DataType dtype)`	The `DefaultDataNode` implementation returns any data object which has been registered using `DefaultDataNode.registerDataObject(uk.ac.starlink.datanode.nodes.DataType, java.lang.Object)`.
`java.lang.String`	`getDescription()`	Gets a concise description of this object.
`java.lang.String`	`getNodeTLA()`	The `DefaultDataNode` implementation returns the string "...".
`java.lang.String`	`getNodeType()`	Returns a short sentence indicating what kind of node this is.
`boolean`	`hasDataObject(DataType dtype)`	The `DefaultDataNode` implementation returns true for only those data objects which have been registered using `DefaultDataNode.registerDataObject(uk.ac.starlink.datanode.nodes.DataType, java.lang.Object)`.

Methods inherited from class uk.ac.starlink.datanode.nodes.HDUDataNode
getHDUIndex, getHduType, getHeader, getPathElement, getPathSeparator

Methods inherited from class uk.ac.starlink.datanode.nodes.DefaultDataNode
beep, getChildMaker, getCreator, getIcon, getLabel, getName, getParentObject, makeChild, makeErrorChild, registerDataObject, setChildMaker, setCreator, setDescription, setIconID, setLabel, setName, setParentObject, toString

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

- Constructor Detail
  - ImageHDUDataNode
```
public ImageHDUDataNode(nom.tam.fits.Header hdr,
                        FITSDataNode.ArrayDataMaker hdudata)
                 throws NoSuchDataException
```
    Initialises an ImageHDUDataNode from a Header object.
    
    Parameters:
    
    hdr - a FITS header object from which the node is to be created.
    
    hdudata - an object capable of returning the array data for the image
    
    Throws:
    
    NoSuchDataException
- 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 HDUDataNode
    
    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.
  - configureDetail
```
public void configureDetail(DetailViewer dv)
```
    Description copied from class: DefaultDataNode
    
    No custom configuration is performed.
    
    Specified by:
    
    configureDetail in interface DataNode
    
    Overrides:
    
    configureDetail in class HDUDataNode
    
    Parameters:
    
    dv - the detail viewer which this node is given an opportunity to configure
  - getDescription
```
public java.lang.String getDescription()
```
    Description copied from interface: DataNode
    
    Gets a concise description of this object. The form of the description will depend on the type of node, but it might detail the shape or type of data represented, or otherwise give some information additional to the name. It should not include the return value of the getName method, since they may be presented together. It should be on one line, and preferably no longer than around 70 characters. The null value may be returned if there is nothing to say.
    
    Specified by:
    
    getDescription in interface DataNode
    
    Overrides:
    
    getDescription in class HDUDataNode
    
    Returns:
    
    a short string describing this object
  - getNodeTLA
```
public java.lang.String getNodeTLA()
```
    Description copied from class: DefaultDataNode
    
    The DefaultDataNode implementation returns the string "...".
    
    Specified by:
    
    getNodeTLA in interface DataNode
    
    Overrides:
    
    getNodeTLA in class HDUDataNode
    
    Returns:
    
    "..."
  - getNodeType
```
public java.lang.String getNodeType()
```
    Description copied from interface: DataNode
    
    Returns a short sentence indicating what kind of node this is. The return value should be just a few words. As a rough guideline it should indicate what the implementing class is.
    
    Specified by:
    
    getNodeType in interface DataNode
    
    Overrides:
    
    getNodeType in class HDUDataNode
    
    Returns:
    
    a short description of the type of this DataNode
  - hasDataObject
```
public boolean hasDataObject(DataType dtype)
```
    Description copied from class: DefaultDataNode
    
    The DefaultDataNode implementation returns true for only those data objects which have been registered using DefaultDataNode.registerDataObject(uk.ac.starlink.datanode.nodes.DataType, java.lang.Object).
    
    Specified by:
    
    hasDataObject in interface DataNode
    
    Overrides:
    
    hasDataObject in class DefaultDataNode
    
    Parameters:
    
    dtype - data object type of interest
    
    Returns:
    
    true iff a subsequent call of getDataObject(type) is likely to be successful
  - getDataObject
```
public java.lang.Object getDataObject(DataType dtype)
                               throws DataObjectException
```
    Description copied from class: DefaultDataNode
    
    The DefaultDataNode implementation returns any data object which has been registered using DefaultDataNode.registerDataObject(uk.ac.starlink.datanode.nodes.DataType, java.lang.Object).
    
    Specified by:
    
    getDataObject in interface DataNode
    
    Overrides:
    
    getDataObject in class DefaultDataNode
    
    Parameters:
    
    dtype - data object type of interest
    
    Returns:
    
    data object of type type
    
    Throws:
    
    DataObjectException

Class ImageHDUDataNode

Constructor Summary

Method Summary

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

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

Methods inherited from class java.lang.Object

Constructor Detail

ImageHDUDataNode

Method Detail

allowsChildren

getChildIterator

configureDetail

getDescription

getNodeTLA

getNodeType

hasDataObject

getDataObject