ucar.nc2.iosp.nexrad2
Class Nexrad2IOServiceProvider

java.lang.Object
  extended by ucar.nc2.iosp.AbstractIOServiceProvider
      extended by ucar.nc2.iosp.nexrad2.Nexrad2IOServiceProvider
All Implemented Interfaces:
IOServiceProvider

public class Nexrad2IOServiceProvider
extends AbstractIOServiceProvider

An IOServiceProvider for NEXRAD level II files.

Author:
caron

Field Summary
 
Fields inherited from class ucar.nc2.iosp.AbstractIOServiceProvider
raf
 
Constructor Summary
Nexrad2IOServiceProvider()
           
 
Method Summary
 void close()
          Close the file.
 String getFileTypeDescription()
          Get a human-readable description for this file type.
 String getFileTypeId()
          Get a unique id for this file type.
 int getMaxRadials(List groups)
           
 boolean isValidFile(RandomAccessFile raf)
          Check if this is a valid file for this IOServiceProvider.
 Variable makeVariable(NetcdfFile ncfile, int datatype, String shortName, String longName, String abbrev, List<List<Level2Record>> groups, int rd)
           
 void makeVariable2(NetcdfFile ncfile, int datatype, String shortName, String longName, String abbrev, Level2VolumeScan vScan)
           
 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.AbstractIOServiceProvider
getDetailInfo, getFileTypeVersion, getStructureIterator, 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

Nexrad2IOServiceProvider

public Nexrad2IOServiceProvider()
Method Detail

isValidFile

public boolean isValidFile(RandomAccessFile raf)
                    throws IOException
Description copied from interface: IOServiceProvider
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

open

public void open(RandomAccessFile raf,
                 NetcdfFile ncfile,
                 CancelTask cancelTask)
          throws IOException
Description copied from interface: IOServiceProvider
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

makeVariable2

public void makeVariable2(NetcdfFile ncfile,
                          int datatype,
                          String shortName,
                          String longName,
                          String abbrev,
                          Level2VolumeScan vScan)
                   throws IOException
Throws:
IOException

getMaxRadials

public int getMaxRadials(List groups)

makeVariable

public Variable makeVariable(NetcdfFile ncfile,
                             int datatype,
                             String shortName,
                             String longName,
                             String abbrev,
                             List<List<Level2Record>> groups,
                             int rd)
                      throws IOException
Throws:
IOException

readData

public Array readData(Variable v2,
                      Section section)
               throws IOException,
                      InvalidRangeException
Description copied from interface: IOServiceProvider
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

close

public void close()
           throws IOException
Description copied from interface: IOServiceProvider
Close the file. It is the IOServiceProvider's job to close the file (even though it didnt open it), and to free any other resources it has used.

Specified by:
close in interface IOServiceProvider
Overrides:
close in class AbstractIOServiceProvider
Throws:
IOException - if read error

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"


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