visad.data.netcdf.in
Class VirtualScalar

java.lang.Object
  visad.data.netcdf.in.VirtualData
      visad.data.netcdf.in.VirtualScalar

Direct Known Subclasses:

VirtualReal, VirtualText

public abstract class VirtualScalar
extends VirtualData

Provides support for a virtual VisAD Scalar.

Constructor Summary

VirtualScalar(ScalarType type, ucar.netcdf.Variable var)
Constructs from a scalar type and a 1-D netCDF variable

VirtualScalar(ScalarType type, ucar.netcdf.Variable var, SimpleSet rangeSet, Unit unit, visad.data.netcdf.in.Vetter vetter)
Constructs from a scalar type, a 1-D netCDF variable, a range set, a unit, and a value vetter.

Method Summary

DataImpl	getData(Context context) Gets the VisAD data object corresponding to this virtual, data object.
DataFactory	getDataFactory() Returns the factory used to create VisAD data objects.
double[]	getDoubles(Context context) Gets the double values corresponding to this virtual, data object at a given context.
SimpleSet	getRangeSet() Gets the range set of this scalar.
protected abstract Scalar	getScalar(Context context) Gets the Scalar object corresponding to this virtual, data object.
ScalarType	getScalarType() Gets the ScalarType of this scalar.
MathType	getType() Gets the MathType of this scalar.
Unit	getUnit() Gets the unit of the value.
ucar.netcdf.Variable	getVariable() Gets the netCDF variable.
visad.data.netcdf.in.Vetter	getVetter() Gets the value vetter.
boolean	isReal() Determines if this is a VirtualReal or not.
void	setDataFactory(DataFactory factory) Sets the factory used to create VisAD data objects.

Methods inherited from class visad.data.netcdf.in.VirtualData

clone, getData, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

VirtualScalar

public VirtualScalar(ScalarType type,
                     ucar.netcdf.Variable var,
                     SimpleSet rangeSet,
                     Unit unit,
                     visad.data.netcdf.in.Vetter vetter)

Constructs from a scalar type, a 1-D netCDF variable, a range set, a unit, and a value vetter.

Parameters:

type - The type of the nested scalar.

var - The 1-D netCDF variable.

rangeSet - The range set of the values.

unit - The unit of the values.

vetter - The value vetter.

VirtualScalar

public VirtualScalar(ScalarType type,
                     ucar.netcdf.Variable var)

Constructs from a scalar type and a 1-D netCDF variable

Parameters:

type - The type of the nested scalar.

var - The 1-D netCDF variable.

Method Detail

getScalarType

public ScalarType getScalarType()

Gets the ScalarType of this scalar.

Returns:

The ScalarType of this scalar.

getType

public MathType getType()

Gets the MathType of this scalar.

Specified by:

getType in class VirtualData

Returns:

The ScalarType of this scalar.

isReal

public boolean isReal()

Determines if this is a VirtualReal or not.

Returns:

true if this is a VirtualReal

getRangeSet

public SimpleSet getRangeSet()

Gets the range set of this scalar.

Returns:

The range set of this scalar.

Throws:

RuntimeException - if class doesn't support this.

getUnit

public Unit getUnit()

Gets the unit of the value.

Returns:

The unit of the value.

Throws:

RuntimeException - if class doesn't support this.

getVariable

public ucar.netcdf.Variable getVariable()

Gets the netCDF variable.

Returns:

The netCDF variable.

getVetter

public visad.data.netcdf.in.Vetter getVetter()

Gets the value vetter.

Returns:

The value vetter.

Throws:

RuntimeException - if class doesn't support this.

getData

public DataImpl getData(Context context)
                 throws InvalidContextException,
                        VisADException,
                        RemoteException,
                        IOException

Gets the VisAD data object corresponding to this virtual, data object.

Specified by:

getData in class VirtualData

Parameters:

context - The context in which the data is to be gotten.

Returns:

The VisAD Scalar corresponding to this virtual, data object. throws InvalidContextException Invalid context.

Throws:

InvalidContextException - if the indicial context is invalid.

VisADException - Couldn't create necessary VisAD object.

RemoteException - if a Java RMI failure occurs.

IOException - I/O failure.

getScalar

protected abstract Scalar getScalar(Context context)
                             throws VisADException,
                                    InvalidContextException,
                                    IOException

Gets the Scalar object corresponding to this virtual, data object.

Returns:

The VisAD Scalar corresponding to this virtual, data object.

Throws:

InvalidContextException - if the indicial context is invalid.

VisADException - Couldn't create necessary VisAD object.

RemoteException - if a Java RMI failure occurs.

IOException - I/O failure.

getDoubles

public double[] getDoubles(Context context)
                    throws IOException,
                           VisADException

Gets the double values corresponding to this virtual, data object at a given context.

Returns:

The double values of this virtual, data object.

Throws:

VisADException - Couldn't create necessary VisAD object.

IOException - I/O failure.

RuntimeException - if class doesn't support this.

setDataFactory

public void setDataFactory(DataFactory factory)

Sets the factory used to create VisAD data objects.

Specified by:

setDataFactory in class VirtualData

Parameters:

factory - The factory for creating VisAD data objects.

getDataFactory

public DataFactory getDataFactory()

Returns the factory used to create VisAD data objects.

Specified by:

getDataFactory in class VirtualData

Returns:

factory The factory for creating VisAD data objects.