org.rhq.core.util.stream
Class StreamCopyDigest

java.lang.Object
  org.rhq.core.util.stream.StreamCopyDigest

public class StreamCopyDigest
extends Object

This copies stream data to another stream, while calculating the stream's message digest on the fly as the copy is performed.

Author:

John Mazzitelli

Constructor Summary

StreamCopyDigest()

StreamCopyDigest(MessageDigestGenerator generator)

Method Summary

String	copyAndCalculateHashcode(InputStream in, OutputStream out) Copies the input stream data to the output stream and returns the copied data's digest string.
MessageDigestGenerator	getMessageDigestGenerator()

Methods inherited from class java.lang.Object

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

Constructor Detail

StreamCopyDigest

public StreamCopyDigest()

StreamCopyDigest

public StreamCopyDigest(MessageDigestGenerator generator)

Method Detail

getMessageDigestGenerator

public MessageDigestGenerator getMessageDigestGenerator()

Returns:

the generator used to calculate digests/hashcodes

copyAndCalculateHashcode

public String copyAndCalculateHashcode(InputStream in,
                                       OutputStream out)

Copies the input stream data to the output stream and returns the copied data's digest string. Note: the streams are never closed - the caller is responsible for that.

Parameters:

in - input content

out - where to write the input content

Returns:

the copied content's digest string (aka hashcode)