Package org.apache.commons.io.input
Class MessageDigestInputStream.MessageDigestMaintainingObserver
java.lang.Object
org.apache.commons.io.input.ObservableInputStream.Observer
org.apache.commons.io.input.MessageDigestInputStream.MessageDigestMaintainingObserver
- Enclosing class:
- MessageDigestInputStream
public static class MessageDigestInputStream.MessageDigestMaintainingObserver
extends ObservableInputStream.Observer
Maintains the message digest.
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Constructor Summary
ConstructorsConstructorDescriptionMessageDigestMaintainingObserver(MessageDigest messageDigest) Constructs an MessageDigestMaintainingObserver for the given MessageDigest. -
Method Summary
Modifier and TypeMethodDescriptionvoiddata(byte[] input, int offset, int length) Called to indicate thatInputStream.read(byte[]), orInputStream.read(byte[], int, int)have been called, and are about to invoke data.voiddata(int input) Called to indicate, thatInputStream.read()has been invoked on theObservableInputStream, and will return a value.Methods inherited from class org.apache.commons.io.input.ObservableInputStream.Observer
closed, error, finished
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Constructor Details
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MessageDigestMaintainingObserver
Constructs an MessageDigestMaintainingObserver for the given MessageDigest.- Parameters:
messageDigest- the message digest to use- Throws:
NullPointerException- if messageDigest is null.
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Method Details
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data
Description copied from class:ObservableInputStream.ObserverCalled to indicate thatInputStream.read(byte[]), orInputStream.read(byte[], int, int)have been called, and are about to invoke data.- Overrides:
datain classObservableInputStream.Observer- Parameters:
input- The byte array, which has been passed to the read call, and where data has been stored.offset- The offset within the byte array, where data has been stored.length- The number of bytes, which have been stored in the byte array.- Throws:
IOException- if an I/O error occurs.
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data
Description copied from class:ObservableInputStream.ObserverCalled to indicate, thatInputStream.read()has been invoked on theObservableInputStream, and will return a value.- Overrides:
datain classObservableInputStream.Observer- Parameters:
input- The value, which is being returned. This will never be -1 (EOF), because, in that case,ObservableInputStream.Observer.finished()will be invoked instead.- Throws:
IOException- if an I/O error occurs.
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