ucar.nc2.iosp.bufr
Class MessageScanner

java.lang.Object
  ucar.nc2.iosp.bufr.MessageScanner

public class MessageScanner
extends java.lang.Object

Sequentially scans a BUFR file, extracts the messages.

Since:

May 9, 2008

Author:

caron

Field Summary

static int

MAX_MESSAGE_SIZE

Constructor Summary

MessageScanner(RandomAccessFile raf)

MessageScanner(RandomAccessFile raf, long startPos)

Method Summary

byte[]	getMessageBytes(Message m)
byte[]	getMessageBytesFromLast(Message m)
int	getTotalMessages()
int	getTotalObs()
boolean	hasNext()
static boolean	isValidFile(RandomAccessFile raf) is this a valid BUFR file.
Message	next()
long	writeCurrentMessage(java.nio.channels.WritableByteChannel out)

Methods inherited from class java.lang.Object

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

Field Detail

MAX_MESSAGE_SIZE

public static final int MAX_MESSAGE_SIZE

See Also:

Constant Field Values

Constructor Detail

MessageScanner

public MessageScanner(RandomAccessFile raf)
               throws java.io.IOException

Throws:

java.io.IOException

MessageScanner

public MessageScanner(RandomAccessFile raf,
                      long startPos)
               throws java.io.IOException

Throws:

java.io.IOException

Method Detail

isValidFile

public static boolean isValidFile(RandomAccessFile raf)
                           throws java.io.IOException

is this a valid BUFR file.

Parameters:

raf - check this file

Returns:

true if its a BUFR file

Throws:

java.io.IOException - on read error

hasNext

public boolean hasNext()
                throws java.io.IOException

Throws:

java.io.IOException

next

public Message next()
             throws java.io.IOException

Throws:

java.io.IOException

getMessageBytesFromLast

public byte[] getMessageBytesFromLast(Message m)
                               throws java.io.IOException

Throws:

java.io.IOException

getMessageBytes

public byte[] getMessageBytes(Message m)
                       throws java.io.IOException

Throws:

java.io.IOException

getTotalObs

public int getTotalObs()

getTotalMessages

public int getTotalMessages()

writeCurrentMessage

public long writeCurrentMessage(java.nio.channels.WritableByteChannel out)
                         throws java.io.IOException

Throws:

java.io.IOException