visad.data.netcdf.out
Class TupleAccessor

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

All Implemented Interfaces:

VisADAccessor

class TupleAccessor

extends DataAccessor

The TupleAccessor class accesses data in a VisAD Tuple that's being adapted to a netCDF API. It's useful for exporting VisAD data to a netCDF dataset.

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

TupleAccessor(int index, VisADAccessor outerAccessor) Construct from a component index 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

TupleAccessor

protected TupleAccessor(int index,
                        VisADAccessor outerAccessor)

Construct from a component index and an outer VisADAccessor.

Parameters:

index - The index of the Tuple component.

outerAccessor - The DataAccessor of the enclosing VisAD data object. Returns a Tuple.

Method Detail

get

protected Object get()
              throws IOException

Return a datum given the split, netCDF indexes.

Specified by:

get in class DataAccessor

Returns:

The data object at the position given by localIndexes and outerIndexes.

Throws:

IOException - Data access I/O failure.

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.