visad.data.netcdf.in
Class Strategy

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

Direct Known Subclasses:

CompositeStrategy, FileStrategy, InMemoryStrategy

public abstract class Strategy
extends Object

A strategy for importing a netCDF dataset.

Author:

Steven R. Emmerson

Field Summary

static Strategy	DEFAULT The default import strategy.
static Strategy	IN_MEMORY An import strategy that first tries the InMemoryStrategy strategy and then tries the MERGED_FILE_FLAT_FIELDS strategy.
static Strategy	MERGED_FILE_FLAT_FIELDS An import strategy that first tries the FileStrategy strategy and then tries the UNMERGED_FILE_FLAT_FIELDS strategy.
static Strategy	UNMERGED_FILE_FLAT_FIELDS An import strategy that only tries the MaxFileFieldStrategy strategy.

Constructor Summary

protected

Strategy() Constructs from nothing.

Method Summary

abstract DataImpl

getData(NetcdfAdapter adapter) Returns a VisAD data object corresponding to the netCDF dataset.

Methods inherited from class java.lang.Object

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

Field Detail

UNMERGED_FILE_FLAT_FIELDS

public static final Strategy UNMERGED_FILE_FLAT_FIELDS

An import strategy that only tries the MaxFileFieldStrategy strategy.

MERGED_FILE_FLAT_FIELDS

public static final Strategy MERGED_FILE_FLAT_FIELDS

An import strategy that first tries the FileStrategy strategy and then tries the UNMERGED_FILE_FLAT_FIELDS strategy.

IN_MEMORY

public static final Strategy IN_MEMORY

An import strategy that first tries the InMemoryStrategy strategy and then tries the MERGED_FILE_FLAT_FIELDS strategy.

DEFAULT

public static final Strategy DEFAULT

The default import strategy. The details of this strategy are unspecified and subject to change. Currently, it is identical to the MERGED_FILE_FLAT_FIELDS strategy.

Constructor Detail

Strategy

protected Strategy()

Constructs from nothing.

Method Detail

getData

public abstract DataImpl getData(NetcdfAdapter adapter)
                          throws IOException,
                                 VisADException,
                                 RemoteException,
                                 BadFormException,
                                 OutOfMemoryError

Returns a VisAD data object corresponding to the netCDF dataset.

Parameters:

adapter - The netCDF-to-VisAD adapter.

Returns:

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

Throws:

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

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

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

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

RemoteException - if a Java RMI failure occurs.