[jira] Created: (SYNAPSE-306) Merge Hessian and binary message builders/formatters

["Andreas Veithen (JIRA)" <ji...@apache.org>]

Merge Hessian and binary message builders/formatters
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                 Key: SYNAPSE-306
                 URL: https://issues.apache.org/jira/browse/SYNAPSE-306
             Project: Synapse
          Issue Type: Improvement
          Components: Transports
            Reporter: Andreas Veithen
            Priority: Minor
             Fix For: 1.3


SYNAPSE-259 introduced message builders and formatters for the Hessian format: see package org.apache.synapse.format.hessian in module synapse-extensions.
SYNAPSE-261 added builders and formatters for generic binary payloads: see package org.apache.synapse.format in module synapse-transports.

While the code looks very different, those builders and formatters do almost the same thing: the two builders wrap the binary data of the message in a wrapper element using a DataHandler, while the formatters unwrap the data and hand it to the transport. The main differences in behavior are:
* The wrapper element (default) names are different.
* The Hessian message formatter handles SOAP faults in a protocol specific way.

Other differences are technical. For example the Hessian builder uses a TemporaryData object to store the binary data, while BinaryBuilder uses a byte array. Note that using a TemporaryData object would also be beneficial for BinaryBuilder, but this is not possible for the moment given that TemporaryData belongs to synapse-core, while BinaryBuilder is part of synapse-transports.

Given the similarities between the two implementations, the proposal is to merge them as far as possible.

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