Package org.codice.ddf.checksum.impl

Class Adler32ChecksumProvider

java.lang.Object

org.codice.ddf.checksum.AbstractChecksumProvider

org.codice.ddf.checksum.impl.Adler32ChecksumProvider

All Implemented Interfaces:

ChecksumProvider

public class Adler32ChecksumProvider
extends AbstractChecksumProvider

The Adler32 checksum algorithm is nearly as reliable as CRC32 but is significantly faster. For the purposes of identifying potential duplicate content in DDF, Adler32 is sufficiently accurate.

Constructor Summary

Constructors

Constructor	Description
Adler32ChecksumProvider()

Method Summary

Modifier and Type	Method	Description
String	calculateChecksum(InputStream inputStream)	Calculates checksum from InputStream
String	getChecksumAlgorithm()	Returns identifier for check sum algorithm

Methods inherited from class java.lang.Object

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

Constructor Details

Adler32ChecksumProvider

public Adler32ChecksumProvider()

Method Details

calculateChecksum

public String calculateChecksum(InputStream inputStream)
                         throws IOException,
NoSuchAlgorithmException

Description copied from interface: ChecksumProvider

Calculates checksum from InputStream

Specified by:

calculateChecksum in interface ChecksumProvider

Specified by:

calculateChecksum in class AbstractChecksumProvider

Returns:

calculated checksum value

Throws:

IOException

NoSuchAlgorithmException

getChecksumAlgorithm

public String getChecksumAlgorithm()

Description copied from interface: ChecksumProvider

Returns identifier for check sum algorithm

Specified by:

getChecksumAlgorithm in interface ChecksumProvider

Specified by:

getChecksumAlgorithm in class AbstractChecksumProvider

Returns:

checksum algorithm identifier