ucar.nc2.iosp.misc
Class Nldn

java.lang.Object
  ucar.nc2.iosp.AbstractIOServiceProvider
      ucar.nc2.iosp.misc.AbstractLightningIOSP
          ucar.nc2.iosp.misc.Nldn

All Implemented Interfaces:

IOServiceProvider

public class Nldn
extends AbstractLightningIOSP

National Lightning Detection Network (NLDN)

Since:

Nov 19, 2008

Author:

caron

See Also:

"http://www.unidata.ucar.edu/data/lightning.html"

Field Summary

Fields inherited from class ucar.nc2.iosp.misc.AbstractLightningIOSP

ECCENTRICITY, ELLIPSE_ANGLE, LAT, LON, MAJOR_AXIS, MINOR_AXIS, MULTIPLICITY, RECORD, secondsSince1970, SIGNAL, TIME

Fields inherited from class ucar.nc2.iosp.AbstractIOServiceProvider

raf

Constructor Summary

Nldn()

Method Summary

protected void	addLightningGlobalAttributes(NetcdfFile ncfile) Add the global attributes.
String	getFileTypeDescription() Get a human-readable description for this file type.
String	getFileTypeId() Get a unique id for this file type.
StructureDataIterator	getStructureIterator(Structure s, int bufferSize) Get the structure iterator
boolean	isValidFile(RandomAccessFile raf) Check if this is a valid file for this IOServiceProvider.
void	open(RandomAccessFile raf, NetcdfFile ncfile, CancelTask cancelTask) Open existing file, and populate ncfile with it.
Array	readData(Variable v2, Section section) Read data from a top level Variable and return a memory resident Array.

Methods inherited from class ucar.nc2.iosp.misc.AbstractLightningIOSP

makeLightningVariable

Methods inherited from class ucar.nc2.iosp.AbstractIOServiceProvider

close, createValidNetcdfObjectName, getDetailInfo, getFileTypeVersion, readSection, readToByteChannel, sendIospMessage, sync, syncExtend, toStringDebug

Methods inherited from class java.lang.Object

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

Constructor Detail

Nldn

public Nldn()

Method Detail

isValidFile

public boolean isValidFile(RandomAccessFile raf)
                    throws IOException

Check if this is a valid file for this IOServiceProvider. You must make this method thread safe, ie dont keep any state.

Parameters:

raf - RandomAccessFile

Returns:

true if valid.

Throws:

IOException - if read error

getFileTypeId

public String getFileTypeId()

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()

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 existing file, and populate ncfile with it. This method is only called by the NetcdfFile constructor on itself. The provided NetcdfFile object will be empty except for the location String and the IOServiceProvider associated with this NetcdfFile object.

Specified by:

open in interface IOServiceProvider

Overrides:

open in class AbstractIOServiceProvider

Parameters:

raf - the file to work on, it has already passed the isValidFile() test.

ncfile - add objects to this empty NetcdfFile

cancelTask - used to monitor user cancellation; may be null.

Throws:

IOException - if read error

addLightningGlobalAttributes

protected void addLightningGlobalAttributes(NetcdfFile ncfile)

Add the global attributes.

Overrides:

addLightningGlobalAttributes in class AbstractLightningIOSP

Parameters:

ncfile - the file to add to

readData

public Array readData(Variable v2,
                      Section section)
               throws IOException,
                      InvalidRangeException

Read data from a top level Variable and return a memory resident Array. This Array has the same element type as the Variable, and the requested shape.

Parameters:

v2 - a top-level Variable

section - the section of data to read. There must be a Range for each Dimension in the variable, in order. Note: no nulls allowed. IOSP may not modify.

Returns:

the requested data in a memory-resident Array

Throws:

IOException - if read error

InvalidRangeException - if invalid section

See Also:

Range

getStructureIterator

public StructureDataIterator getStructureIterator(Structure s,
                                                  int bufferSize)
                                           throws IOException

Get the structure iterator

Specified by:

getStructureIterator in interface IOServiceProvider

Overrides:

getStructureIterator in class AbstractIOServiceProvider

Parameters:

s - the Structure

bufferSize - the buffersize

Returns:

the data iterator

Throws:

IOException - if problem reading data