org.ajax4jsf.util.base64
Interface Decoder

All Known Subinterfaces:

BinaryDecoder

All Known Implementing Classes:

Base64, URL64Codec, URLCodec

public interface Decoder

Provides the highest level of abstraction for Decoders. This is the sister interface of Encoder. All Decoders implement this common generic interface.

Allows a user to pass a generic Object to any Decoder implementation in the codec package.

One of the two interfaces at the center of the codec package.

Version:

$Id: Decoder.java,v 1.1.2.1 2007/01/09 18:59:14 alexsmirnov Exp $

Author:

Apache Software Foundation

Method Summary

java.lang.Object

decode(java.lang.Object pObject) Decodes an "encoded" Object and returns a "decoded" Object.

Method Detail

decode

java.lang.Object decode(java.lang.Object pObject)
                        throws DecoderException

Decodes an "encoded" Object and returns a "decoded" Object. Note that the implementation of this interface will try to cast the Object parameter to the specific type expected by a particular Decoder implementation. If a ClassCastException occurs this decode method will throw a DecoderException.

Parameters:

pObject - an object to "decode"

Returns:

a 'decoded" object

Throws:

DecoderException - a decoder exception can be thrown for any number of reasons. Some good candidates are that the parameter passed to this method is null, a param cannot be cast to the appropriate type for a specific encoder.