ucar.bufr
Class BufrDataExtractor

java.lang.Object
  ucar.bufr.BufrDataExtractor

public final class BufrDataExtractor
extends java.lang.Object

A class used to extract one ob or one set of obs from a Bufr file by using fields DDSoffset, ObsOffset, BitPos, and BitBuf from a BUFR Index. A BUFR index is created by the BufrIndexer class. see IndexFormat.txt

Constructor Summary

BufrDataExtractor(ucar.unidata.io.RandomAccessFile raf, java.lang.String MasterTableFilename)
Constructs a BufrDataExtractor object for a RandomAccessFile.

Method Summary

java.util.HashMap	getBufrDatas() the bufrdatas (fields) for this dataset.
boolean	getData(long DDSOffset, long ObsOffset, int bitPos, int bitBuf) reads the Bufrdatas (fields) with a certain offsets in the file.
java.util.ArrayList	getDorder() the order of bufrdatas (fields) for this dataset.

Methods inherited from class java.lang.Object

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

Constructor Detail

BufrDataExtractor

public BufrDataExtractor(ucar.unidata.io.RandomAccessFile raf,
                         java.lang.String MasterTableFilename)

Constructs a BufrDataExtractor object for a RandomAccessFile.

Parameters:

raf - ucar.unidata.io.RandomAccessFile with BUFR content

MasterTableFilename -

Method Detail

getData

public final boolean getData(long DDSOffset,
                             long ObsOffset,
                             int bitPos,
                             int bitBuf)
                      throws java.io.IOException

reads the Bufrdatas (fields) with a certain offsets in the file.

Parameters:

DDSOffset -

ObsOffset -

bitPos -

bitBuf -

Returns:

success

Throws:

java.io.IOException - if raf does not contain a valid BUFR record.

getBufrDatas

public final java.util.HashMap getBufrDatas()

the bufrdatas (fields) for this dataset.

Returns:

bufrdatas

getDorder

public final java.util.ArrayList getDorder()

the order of bufrdatas (fields) for this dataset.

Returns:

dorder