visad.data.netcdf.in

Class FileStrategy

java.lang.Object

visad.data.netcdf.in.Strategy

visad.data.netcdf.in.FileStrategy

Direct Known Subclasses:

MaxFileFieldStrategy

public class FileStrategy
extends Strategy

Provides support for importing netCDF datasets using the strategy of employing FileFlatFields wherever possible, but merging the data so as to keep the number of FileFlatFields to a minimum.

This class may be subclassed in order to use a different data merger tactic -- one that maximizes the number of FileFlatFields, for example (see getMerger()).

Instances are immutable.

Field Summary

Fields inherited from class visad.data.netcdf.in.Strategy

DEFAULT, IN_MEMORY, MERGED_FILE_FLAT_FIELDS, UNMERGED_FILE_FLAT_FIELDS

Method Summary

Modifier and Type	Method and Description
DataImpl	getData(NetcdfAdapter adapter) Returns a VisAD data object corresponding to the netCDF dataset.
static Strategy	instance() Returns an instance of this class.
static void	main(java.lang.String[] args) Tests this class.

Methods inherited from class java.lang.Object

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

Method Detail

instance

public static Strategy instance()

Returns an instance of this class.

Returns:

An instance of this class.

getData

public DataImpl getData(NetcdfAdapter adapter)
                 throws java.io.IOException,
                        VisADException,
                        java.rmi.RemoteException,
                        BadFormException,
                        java.lang.OutOfMemoryError

Returns a VisAD data object corresponding to the netCDF dataset. This method uses the Merger returned by getMerger().

Specified by:

getData in class Strategy

Parameters:

adapter - The netCDF-to-VisAD adapter.

Returns:

The top-level, VisAD data object in the netCDF dataset.

Throws:

VisADException - if a problem occurs in core VisAD -- probably because a VisAD object couldn't be created.

java.io.IOException - if a data access I/O failure occurs.

BadFormException - if the netCDF dataset doesn't conform to conventions implicit in constructing View.

java.lang.OutOfMemoryError - if the netCDF dataset couldn't be imported into memory.

java.rmi.RemoteException - if a Java RMI failure occurs.

See Also:

getMerger()

main

public static void main(java.lang.String[] args)
                 throws java.lang.Exception

Tests this class.

Parameters:

args - File pathnames.

Throws:

java.lang.Exception - Something went wrong.