org.apache.oodt.product.handlers.ofsn

Interface OFSNGetHandler

All Known Implementing Classes:

MD5GetHandler, StdOFSNGetHandler, URLGetHandler

public interface OFSNGetHandler

The default OFSN handler for getting remote data.

Version:

$Revision$

Author:

mattmann

Method Summary

Modifier and Type	Method and Description
void	configure(Properties conf) Configures this handler with the provided configuration stored in a Properties object.
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.

Method Detail

retrieveChunk

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

Retrieves a chunk of data from the remote file.

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

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.

Parameters:

filepath - The remote file in question.

Returns:

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

configure

void configure(Properties conf)

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

Parameters:

conf - The configuration for this list handler.