com.bigdata.util
Class ChecksumUtility

java.lang.Object
  com.bigdata.util.ChecksumUtility

public class ChecksumUtility
extends Object

Utility class for computing the Adler32 checksum of a buffer. This class is NOT thread-safe.

Version:

$Id: ChecksumUtility.java 2265 2009-10-26 12:51:06Z thompsonbry $

Author:

Bryan Thompson

Constructor Summary

ChecksumUtility()

Method Summary

int	checksum(ByteBuffer buf, int pos, int limit) Compute the Adler32 checksum of the buffer.

Methods inherited from class java.lang.Object

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

Constructor Detail

ChecksumUtility

public ChecksumUtility()

Method Detail

checksum

public int checksum(ByteBuffer buf,
                    int pos,
                    int limit)

Compute the Adler32 checksum of the buffer. The position, mark, and limit are unchanged by this operation. The operation is optimized when the buffer is backed by an array.

Parameters:

buf - The buffer.

pos - The starting position.

limit - The limit.

Returns:

The checksum.