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https://issues.apache.org/jira/browse/WSCOMMONS-390?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12634205#action_12634205
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Davanum Srinivas commented on WSCOMMONS-390:
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+1 from me.
> Axiom needs to provide a way to control encoding of binary attachment parts
> when serializing a MIME multipart message
> ---------------------------------------------------------------------------------------------------------------------
>
> Key: WSCOMMONS-390
> URL: https://issues.apache.org/jira/browse/WSCOMMONS-390
> Project: WS-Commons
> Issue Type: Improvement
> Components: AXIOM
> Reporter: Phil Adams
>
> Currently, it appears that Axiom uses the "identity" encoding (i.e. no
> encoding) when writing out a binary attachment part as part of a MIME
> message. In this case the Content-Type would be something like
> "image/jpeg" and the Content-Transfer-Encoding would be "binary" within the
> MIME part. The "binary" encoding for a binary attachment part works fine
> if the resulting byte stream will be transmitted in a byte array-based data
> structure (e.g. HTTP message or a JMS BytesMessage). However, if the
> resulting byte stream needs to be transmitted in a String-based data
> structure (e.g. JMS TextMessage) then the binary attachment parts would need
> to be encoded with base64 encoding. RFC 2045
> (http://tools.ietf.org/html/rfc2045) discusses this in sections 6.1 and 6.2.
> So, the point of this issue is to request that a mechanism for requesting the
> base64 encoding of binary attachment parts be added to Axiom. After
> brainstorming this with Rich and Dims, one suggestion for doing this would be
> to provide an additional property on the OMOutputFormat class with
> corresponding get/set methods. Perhaps a property with a name like
> "binaryPartContentTransferEncoding" could be added which would be used to
> specify the Content-Transfer-Encoding to be done for binary attachment parts.
> Then for binary attachment parts, Axiom could wrap the existing
> DataHandler with a ConfigurableDataHandler which could do the necessary
> base64 encoding when the part's content is written out.
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