Package ucar.nc2.iosp.bufr

Class MessageScanner

java.lang.Object

ucar.nc2.iosp.bufr.MessageScanner

public class MessageScanner
extends Object

Sequentially scans a BUFR file, extracts the messages.

Since:

May 9, 2008

Constructor Summary

Constructors

Constructor	Description
MessageScanner(RandomAccessFile raf)
MessageScanner(RandomAccessFile raf, long startPos, boolean useEmbeddedTables)

Method Summary

Modifier and Type	Method	Description
Message	getFirstDataMessage()
byte[]	getMessageBytes(Message m)
byte[]	getMessageBytesFromLast(Message m)
TableLookup	getTableLookup()
int	getTotalMessages()
int	getTotalObs()
boolean	hasNext()
static boolean	isValidFile(RandomAccessFile raf)	is this a valid BUFR file.
Message	next()
void	reset()
long	writeCurrentMessage(WritableByteChannel out)

Methods inherited from class java.lang.Object

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

Constructor Detail

MessageScanner

public MessageScanner(RandomAccessFile raf)
               throws IOException

Throws:

IOException

MessageScanner

public MessageScanner(RandomAccessFile raf,
                      long startPos,
                      boolean useEmbeddedTables)
               throws IOException

Throws:

IOException

Method Detail

isValidFile

public static boolean isValidFile(RandomAccessFile raf)
                           throws IOException

is this a valid BUFR file.

Parameters:

raf - check this file

Returns:

true if its a BUFR file

Throws:

IOException - on read error

getFirstDataMessage

public Message getFirstDataMessage()
                            throws IOException

Throws:

IOException

reset

public void reset()

hasNext

public boolean hasNext()
                throws IOException

Throws:

IOException

next

public Message next()

getTableLookup

public TableLookup getTableLookup()
                           throws IOException

Throws:

IOException

getMessageBytesFromLast

public byte[] getMessageBytesFromLast(Message m)
                               throws IOException

Throws:

IOException

getMessageBytes

public byte[] getMessageBytes(Message m)
                       throws IOException

Throws:

IOException

getTotalObs

public int getTotalObs()

getTotalMessages

public int getTotalMessages()

writeCurrentMessage

public long writeCurrentMessage(WritableByteChannel out)
                         throws IOException

Throws:

IOException