com.sun.mdm.index.idgen
Interface ChecksumCalculator

All Known Implementing Classes:

DefaultChecksumCalculator, SampleChecksumCalculator

public interface ChecksumCalculator

Interface to calculate checksums

Method Summary

java.lang.String	calcChecksum(java.lang.String baseData) Calculate the checksum for the supplied data.
void	setParameter(java.lang.String parameterName, java.lang.Object value) Parameters of the checksum calculator file are set using this method.

Method Detail

calcChecksum

public java.lang.String calcChecksum(java.lang.String baseData)
                              throws SEQException

Calculate the checksum for the supplied data. A return value of null indicates that no checksum is valid for the supplied data. This could be used, for example, where a modulo 11 checksum algorithm is used, and the algorithm specifies that if the remainder is 10, the original number is invalid.

Parameters:

baseData - data for which the checksum is to be calculated

Returns:

calculated checksum or null if no checksum is valid

Throws:

SEQException - An error occurred

setParameter

public void setParameter(java.lang.String parameterName,
                         java.lang.Object value)
                  throws SEQException

Parameters of the checksum calculator file are set using this method.

Parameters:

parameterName - parameter

value - parameter value

Throws:

SEQException - An error occurred