visad.data.netcdf.out
Class FieldAccessor

java.lang.Object
  visad.data.netcdf.out.DataAccessor
      visad.data.netcdf.out.FieldAccessor

All Implemented Interfaces:

VisADAccessor

class FieldAccessor

extends DataAccessor

The FieldAccessor class accesses data in a VisAD Field that's being adapted to a netCDF API.

Field Summary

protected Dimension[]	localDims The netCDF Dimensions of the VisAD data object in netCDF order (outermost dimension first).
protected int[]	localIndexes The netCDF indexes for the local VisAD data object in netCDF order (outermost dimension first).
protected int	localRank The number of netCDF dimensions in the VisAD data object.
protected VisADAccessor	outerAccessor The VisADAccessor of the outer VisAD data object.
protected int[]	outerIndexes The netCDF indexes for the outer VisAD data object in netCDF order (outermost dimension first).
protected int	outerRank The number of netCDF dimensions in the outer VisAD data object.

Constructor Summary

protected

FieldAccessor(Dimension[] localDims, VisADAccessor outerAccessor) Construct from netCDF Dimensions, and an outer VisADAccessor.

Method Summary

protected Object	get() Return a datum given the split, netCDF indexes.
Object	get(int[] indexes) Return a datum given its location as netCDF indexes.
Dimension[]	getDimensions() Return the netCDF dimensions at the level of the data object.
int[]	getLengths() Return the netCDF dimensional lengths.
int	getRank() Return the number of netCDF dimensions at the current level.

Methods inherited from class java.lang.Object

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

Field Detail

localRank

protected final int localRank

The number of netCDF dimensions in the VisAD data object.

localDims

protected final Dimension[] localDims

The netCDF Dimensions of the VisAD data object in netCDF order (outermost dimension first).

localIndexes

protected volatile int[] localIndexes

The netCDF indexes for the local VisAD data object in netCDF order (outermost dimension first).

outerAccessor

protected final VisADAccessor outerAccessor

The VisADAccessor of the outer VisAD data object.

outerRank

protected final int outerRank

The number of netCDF dimensions in the outer VisAD data object.

outerIndexes

protected volatile int[] outerIndexes

The netCDF indexes for the outer VisAD data object in netCDF order (outermost dimension first).

Constructor Detail

FieldAccessor

protected FieldAccessor(Dimension[] localDims,
                        VisADAccessor outerAccessor)

Construct from netCDF Dimensions, and an outer VisADAccessor.

Parameters:

localDims - The netCDF dimensions of the Field in netCDF. order (outermost dimension first).

outerAccessor - The DataAccessor for accessing the Fields object of the enclosing, VisAD data object.

Method Detail

get

protected Object get()
              throws IOException

Return a datum given the split, netCDF indexes.

Specified by:

get in class DataAccessor

Returns:

The Object at the position specified by localIndexes and outerIndexes.

Throws:

IOException - The corresponding datum couldn't be accessed.

getRank

public int getRank()

Return the number of netCDF dimensions at the current level.

Specified by:

getRank in interface VisADAccessor

Returns:

The netCDF rank (i.e. the number of netCDF dimensions) of the VisAD data object being adapted. Includes the dimensions of all enclosing VisAD data objects.

getDimensions

public Dimension[] getDimensions()

Return the netCDF dimensions at the level of the data object. Include all dimensions in more outer data objects.

Specified by:

getDimensions in interface VisADAccessor

Returns:

The array of netCDF Dimensions of the VisAD data object being adapted. Includes the dimensions of all enclosing VisAD data objects.

getLengths

public int[] getLengths()

Return the netCDF dimensional lengths.

Specified by:

getLengths in interface VisADAccessor

Returns:

The lengths of the netCDF Dimensions of the VisAD data object being adapted. Includes the dimensions of all enclosing VisAD data objects.

get

public Object get(int[] indexes)
           throws IOException

Return a datum given its location as netCDF indexes.

Specified by:

get in interface VisADAccessor

Parameters:

indexes - The netCDF indexes for the datum.

Returns:

The VisAD data object (e.g. Tuple) or Java primitive (e.g. Double) corresponding to the given position.

Throws:

IOException - The corresponding datum couldn't be accessed.