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https://issues.apache.org/jira/browse/CAMEL-13988?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Claus Ibsen resolved CAMEL-13988.
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Fix Version/s: (was: 3.x)
3.0.0.RC2
3.0.0
Resolution: Fixed
> Enable camel-protobuf to marshal from objects of type Map to Proto using the
> message descriptor
> -----------------------------------------------------------------------------------------------
>
> Key: CAMEL-13988
> URL: https://issues.apache.org/jira/browse/CAMEL-13988
> Project: Camel
> Issue Type: New Feature
> Affects Versions: 3.0.0.RC1
> Reporter: Omar Al-Safi
> Assignee: Omar Al-Safi
> Priority: Minor
> Fix For: 3.0.0, 3.0.0.RC2
>
> Time Spent: 10m
> Remaining Estimate: 0h
>
> Currently, when you marshal using camel-protobuf, it expects beforehand that
> you have already created your protobuf message as you can see
> [here|https://github.com/apache/camel/blob/master/components/camel-protobuf/src/main/java/org/apache/camel/dataformat/protobuf/ProtobufDataFormat.java#L129].
> I think is beneficial if the user can marshal the data automatically to
> protobuf provided he/she has the data in {{Map}} type and with the correct
> instance class name is provided. We can achieve this with the following steps:
> # In {{marshal}} method, we check if the graph object of type {{Map.class}}.
> # If it is of type {{Map.class}}, then using the
> {{defaultInstance.getDescriptorForType()}}, we obtain the [Message
> Descriptor|https://developers.google.com/protocol-buffers/docs/reference/java/com/google/protobuf/Descriptors.Descriptor]
> for the class instance.
> # Using the obtained descriptor, we iterate over map value and set the field
> from the descriptor.
> By using this, the user can marshal data to Protobuf without the need to
> process it before as long he/she has the data in type {{Map}}. I can send a
> PoC PR if you guys find my proposal reasonable enough but from my the top of
> my head, it shouldn't be much of work to add this feature to camel-protobuf
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