ucar.nc2.iosp.gempak
Class GempakGridServiceProvider

java.lang.Object
  ucar.nc2.iosp.AbstractIOServiceProvider
      ucar.nc2.iosp.grid.GridServiceProvider
          ucar.nc2.iosp.gempak.GempakGridServiceProvider

All Implemented Interfaces:

IOServiceProvider

public class GempakGridServiceProvider
extends GridServiceProvider

An IOSP for GEMPAK Grid data

Author:

Don Murray

Nested Class Summary

protected static class

GempakGridServiceProvider.MakeNetcdfFile TODO: generalize this static class for testing

Nested classes/interfaces inherited from class ucar.nc2.iosp.grid.GridServiceProvider

GridServiceProvider.IndexExtendMode

Field Summary

static boolean	extendIndex Reread the file on a sync
protected GempakGridReader	gemreader GEMPAK file reader

Fields inherited from class ucar.nc2.iosp.grid.GridServiceProvider

addLatLon, alwaysInCache, debugMissing, debugMissingDetails, debugOpen, debugProj, debugTiming, debugVert, fmrcCoordSys, forceNewIndex, indexFileModeOnOpen, indexFileModeOnSync, ncfile, useMaximalCoordSys

Fields inherited from class ucar.nc2.iosp.AbstractIOServiceProvider

raf

Constructor Summary

GempakGridServiceProvider()

Method Summary

protected float[]	_readData(GridRecord gr) Read the data for this GridRecord
String	getFileTypeDescription() Get a human-readable description for this file type.
String	getFileTypeId() Get a unique id for this file type.
boolean	isValidFile(RandomAccessFile raf) Is this a valid file?
static void	main(String[] args) Test this class and possibly write out a netCDF file
protected void	open(GridIndex index, CancelTask cancelTask) Open the index and create the netCDF file from that
void	open(RandomAccessFile raf, NetcdfFile ncfile, CancelTask cancelTask) Open the service provider for reading.
static void	setExtendIndex(boolean b) Extend the list of grid
boolean	sync() Sync the file

Methods inherited from class ucar.nc2.iosp.grid.GridServiceProvider

forceNewIndex, getDetailInfo, isMissingXY, readData, sendIospMessage, setDebugFlags, setIndexAlwaysInCache, setIndexFileModeOnOpen, setIndexFileModeOnSync, useMaximalCoordSys

Methods inherited from class ucar.nc2.iosp.AbstractIOServiceProvider

close, createValidNetcdfObjectName, getFileTypeVersion, getStructureIterator, readSection, readToByteChannel, syncExtend, toStringDebug

Methods inherited from class java.lang.Object

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

Field Detail

gemreader

protected GempakGridReader gemreader

GEMPAK file reader

extendIndex

public static boolean extendIndex

Reread the file on a sync

Constructor Detail

GempakGridServiceProvider

public GempakGridServiceProvider()

Method Detail

isValidFile

public boolean isValidFile(RandomAccessFile raf)
                    throws IOException

Is this a valid file?

Parameters:

raf - RandomAccessFile to check

Returns:

true if a valid GEMPAK grid file

Throws:

IOException - problem reading file

getFileTypeId

public String getFileTypeId()

Description copied from interface: IOServiceProvider

Get a unique id for this file type.

Returns:

registered id of the file type

See Also:

"http://www.unidata.ucar.edu/software/netcdf-java/formats/FileTypes.html"

getFileTypeDescription

public String getFileTypeDescription()

Description copied from interface: IOServiceProvider

Get a human-readable description for this file type.

Returns:

description of the file type

See Also:

"http://www.unidata.ucar.edu/software/netcdf-java/formats/FileTypes.html"

open

public void open(RandomAccessFile raf,
                 NetcdfFile ncfile,
                 CancelTask cancelTask)
          throws IOException

Open the service provider for reading.

Specified by:

open in interface IOServiceProvider

Overrides:

open in class GridServiceProvider

Parameters:

raf - file to read from

ncfile - netCDF file we are writing to (memory)

cancelTask - task for cancelling

Throws:

IOException - problem reading file

open

protected void open(GridIndex index,
                    CancelTask cancelTask)
             throws IOException

Open the index and create the netCDF file from that

Specified by:

open in class GridServiceProvider

Parameters:

index - GridIndex to use

cancelTask - cancel task

Throws:

IOException - problem reading the file

sync

public boolean sync()
             throws IOException

Sync the file

Specified by:

sync in interface IOServiceProvider

Overrides:

sync in class AbstractIOServiceProvider

Returns:

true if needed to sync

Throws:

IOException - problem synching the file

_readData

protected float[] _readData(GridRecord gr)
                     throws IOException

Read the data for this GridRecord

Specified by:

_readData in class GridServiceProvider

Parameters:

gr - grid identifier

Returns:

the data (or null)

Throws:

IOException - problem reading the data

main

public static void main(String[] args)
                 throws IOException

Test this class and possibly write out a netCDF file

Parameters:

args - arg1 input GEMPAK grid to read, arg2 output Netcdf file (optional)

Throws:

IOException - on io error

IOException - problem reading or writing file

setExtendIndex

public static void setExtendIndex(boolean b)

Extend the list of grid

Parameters:

b - true to reread the grid on a sync