visad.data.netcdf.in
Class VirtualDataIterator

java.lang.Object
  visad.data.netcdf.in.VirtualDataIterator

Direct Known Subclasses:

View.DataIterator

public abstract class VirtualDataIterator
extends Object

Supports iteration over the virtual VisAD data objects in a netCDF dataset.

Field Summary

protected View

view The view of the netCDF dataset that's being iterated over.

Constructor Summary

VirtualDataIterator(View view)
Constructs from a view of a netCDF dataset.

Method Summary

protected abstract VirtualData	getData() Gets a clone of the next virtual VisAD data object.
View	getNetcdf() Gets the view of the netCDF dataset.
boolean	hasNext() Indicates if there's another virtual VisAD data object.
VirtualData	next() Gets the next virtual VisAD data object.

Methods inherited from class java.lang.Object

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

Field Detail

view

protected final View view

The view of the netCDF dataset that's being iterated over.

Constructor Detail

VirtualDataIterator

public VirtualDataIterator(View view)

Constructs from a view of a netCDF dataset.

Parameters:

view - A view of a netCDF dataset.

Method Detail

hasNext

public boolean hasNext()
                throws VisADException,
                       IOException

Indicates if there's another virtual VisAD data object.

Returns:

true <=> hasNext() will return the next virtual VisAD data object.

Throws:

VisADException - Couldn't create necessary VisAD object.

IOException - I/O failure.

next

public VirtualData next()
                 throws BadFormException,
                        NoSuchElementException,
                        VisADException,
                        IOException

Gets the next virtual VisAD data object. The next object will be either a VirtualScalar, a VirtualField, or a VirtualFlatField.

Returns:

The next virtual VisAD data object.

Throws:

BadFormException - Non-conforming netCDF dataset.

NoSuchElementException - No more virtual VisAD data objects.

IOException - I/O failure.

VisADException

getData

protected abstract VirtualData getData()
                                throws VisADException,
                                       IOException

Gets a clone of the next virtual VisAD data object. This method must be overridden in subclasses.

Returns:

A clone of the next virtual VisAD data object or null if there is none.

Throws:

VisADException - Couldn't create necessary VisAD object.

IOException

getNetcdf

public View getNetcdf()

Gets the view of the netCDF dataset.