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From "Mirko Raner (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (CODEC-158) Add Codec, StringCodec, and BinaryCodec interfaces that extend both encoder and decoder
Date Wed, 10 Oct 2012 06:15:04 GMT

     [ https://issues.apache.org/jira/browse/CODEC-158?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Mirko Raner updated CODEC-158:
------------------------------

    Attachment: CODEC-158.patch

Attached updated version of the patch.
I went with my preferred choice, BinCodec, as the new name of BinaryCodec. All fully qualified
class names that were previously necessary to resolve the naming conflict were removed.

                
> Add Codec, StringCodec, and BinaryCodec interfaces that extend both encoder and decoder
> ---------------------------------------------------------------------------------------
>
>                 Key: CODEC-158
>                 URL: https://issues.apache.org/jira/browse/CODEC-158
>             Project: Commons Codec
>          Issue Type: Improvement
>    Affects Versions: 1.7
>            Reporter: Mirko Raner
>            Priority: Minor
>         Attachments: CODEC-158.patch, CODEC-158.patch
>
>   Original Estimate: 1h
>  Remaining Estimate: 1h
>
> Currently, there are no common interfaces that extend both the encoder and the decoder
interfaces. This makes it hard to deal with a codec as a single entity and requires separate
treatment of encoder and decoder parts.
> For example, let's say you want to develop a storage abstraction that uses an encoding.
Right now, you would need to write
> class Storage
> {
>     @Inject Encoder encoder;
>     @Inject Decoder decoder;
>     //...
> }
> In practice, encoder and decoder need to match, and most likely both encoder and decoder
would be bound to the same implementation, like Base64 or URLCodec. Because of the lack of
a common superinterface they need to be specified separately. There are some classes like
BaseNCodec that can be used to unify some of the encoders and decoders, but they are too specific
and restrictive.
> Ideally, I would like to write:
> class Storage
> {
>     @Inject Codec codec;
>     //...
> }
> Assuming that combined encoder/decoder classes like Base64 would implement that Codec
interface, this could be directly bound to a combined encoder/decoder implementation.
> It would be nice if these interfaces were added and the existing codec classes (BaseNCodec,
Hex, QCodec, QuotedPrintableCodec, URLCodec) could be modified to implement these new interfaces.
> I'm happy to contribute a patch if there is interest in this feature.

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