Package org.apache.commons.io.input

Class MessageDigestCalculatingInputStream.MessageDigestMaintainingObserver

java.lang.Object

org.apache.commons.io.input.ObservableInputStream.Observer

org.apache.commons.io.input.MessageDigestCalculatingInputStream.MessageDigestMaintainingObserver

Enclosing class:

MessageDigestCalculatingInputStream

public static class MessageDigestCalculatingInputStream.MessageDigestMaintainingObserver
extends ObservableInputStream.Observer

Maintains the message digest.

Field Summary

Fields

Modifier and Type	Field	Description
private java.security.MessageDigest	md

Constructor Summary

Constructors

Constructor	Description
MessageDigestMaintainingObserver(java.security.MessageDigest pMd)	Creates an MessageDigestMaintainingObserver for the given MessageDigest.

Method Summary

Modifier and Type	Method	Description
(package private) void	data(byte[] pBuffer, int pOffset, int pLength)	Called to indicate, that InputStream.read(byte[]), or InputStream.read(byte[], int, int) have been called, and are about to invoke data.
(package private) void	data(int pByte)	Called to indicate, that InputStream.read() has been invoked on the ObservableInputStream, and will return a value.

Methods inherited from class org.apache.commons.io.input.ObservableInputStream.Observer

closed, error, finished

Methods inherited from class java.lang.Object

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

Field Detail

md

private final java.security.MessageDigest md

Constructor Detail

MessageDigestMaintainingObserver

public MessageDigestMaintainingObserver(java.security.MessageDigest pMd)

Creates an MessageDigestMaintainingObserver for the given MessageDigest.

Parameters:

pMd - the message digest to use

Method Detail

data

void data(int pByte)
   throws java.io.IOException

Description copied from class: ObservableInputStream.Observer

Called to indicate, that InputStream.read() has been invoked on the ObservableInputStream, and will return a value.

Overrides:

data in class ObservableInputStream.Observer

Parameters:

pByte - The value, which is being returned. This will never be -1 (EOF), because, in that case, ObservableInputStream.Observer.finished() will be invoked instead.

Throws:

java.io.IOException - if an i/o-error occurs

data

void data(byte[] pBuffer,
          int pOffset,
          int pLength)
   throws java.io.IOException

Description copied from class: ObservableInputStream.Observer

Called to indicate, that InputStream.read(byte[]), or InputStream.read(byte[], int, int) have been called, and are about to invoke data.

Overrides:

data in class ObservableInputStream.Observer

Parameters:

pBuffer - The byte array, which has been passed to the read call, and where data has been stored.

pOffset - The offset within the byte array, where data has been stored.

pLength - The number of bytes, which have been stored in the byte array.

Throws:

java.io.IOException - if an i/o-error occurs