org.codehaus.plexus.digest
Interface StreamingDigester

All Known Implementing Classes:

AbstractStreamingDigester

public interface StreamingDigester

Gradually create a digest for a stream.

Author:

Brett Porter

Field Summary

static java.lang.String

ROLE

Method Summary

java.lang.String	calc() Calculate the current checksum.
java.lang.String	getAlgorithm() Get the algorithm used for the checksum.
void	reset() Reset the hashcode calculation algorithm.
void	update(java.io.InputStream is) Update the checksum with the content of the input stream.

Field Detail

ROLE

public static final java.lang.String ROLE

Method Detail

getAlgorithm

public java.lang.String getAlgorithm()

Get the algorithm used for the checksum.

Returns:

the algorithm

reset

public void reset()
           throws DigesterException

Reset the hashcode calculation algorithm. Only useful when performing incremental hashcodes based on repeated use of update(InputStream)

Throws:

DigesterException - if there was a problem with the internal message digest

calc

public java.lang.String calc()
                      throws DigesterException

Calculate the current checksum.

Returns:

the current checksum.

Throws:

DigesterException - if there was a problem computing the hashcode.

update

public void update(java.io.InputStream is)
            throws DigesterException

Update the checksum with the content of the input stream.

Parameters:

is - the input stream

Throws:

DigesterException - if there was a problem computing the hashcode.