org.apache.oodt.product.handlers.ofsn

Class MD5GetHandler

java.lang.Object

org.apache.oodt.product.handlers.ofsn.MD5GetHandler

All Implemented Interfaces:

OFSNGetHandler

public class MD5GetHandler
extends Object
implements OFSNGetHandler

A OFSNGetHandler to perform an MD5 for a file on the server side.

Version:

$Revision$

Author:

mattmann

Constructor Summary

Constructors

Constructor and Description
MD5GetHandler()

Method Summary

Modifier and Type	Method and Description
void	configure(Properties conf) Configures this handler with the provided configuration stored in a Properties object.
static void	main(String[] args) Use this method ot generate a test MD5 of a provide File specified in args[0].
byte[]	retrieveChunk(String filepath, long offset, int length) Retrieves a chunk of data from the remote file.
long	sizeOf(String filepath) Returns the size of the remote data, which may be the entire file in question, or some subset/transformation on it.

Methods inherited from class java.lang.Object

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

Constructor Detail

MD5GetHandler

public MD5GetHandler()
              throws InstantiationException

Throws:

InstantiationException

Method Detail

configure

public void configure(Properties conf)

Description copied from interface: OFSNGetHandler

Configures this handler with the provided configuration stored in a Properties object.

Specified by:

configure in interface OFSNGetHandler

Parameters:

conf - The configuration for this list handler.

retrieveChunk

public byte[] retrieveChunk(String filepath,
                            long offset,
                            int length)
                     throws ProductException

Description copied from interface: OFSNGetHandler

Retrieves a chunk of data from the remote file.

Specified by:

retrieveChunk in interface OFSNGetHandler

Parameters:

filepath - The path to the remote file.

offset - The offset in the remote data to retrieve.

length - The length of data to read

Returns:

The byte[] data, read, or null otherwise.

Throws:

ProductException - If any error occurs.

sizeOf

public long sizeOf(String filepath)

Description copied from interface: OFSNGetHandler

Returns the size of the remote data, which may be the entire file in question, or some subset/transformation on it.

Specified by:

sizeOf in interface OFSNGetHandler

Parameters:

filepath - The remote file in question.

Returns:

The size of the remote file, potentially after a remote transformation has occured.

main

public static void main(String[] args)
                 throws Exception

Use this method ot generate a test MD5 of a provide File specified in args[0].

Parameters:

args - Only need to specify 1 arg, the full path to the File to MD5.

Throws:

Exception - If any error occurs.