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https://issues.apache.org/jira/browse/TINKERPOP-1582?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15729590#comment-15729590
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stephen mallette commented on TINKERPOP-1582:
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i think we should aim to do this at {{tp32}}. If you just change the client
side in gremlin-python it should not represent a breaking change in any way. I
still can't think of any reason why it's passing that string or why the server
needed to support both modes. Perhaps it is just a remnant of some original
work and now it's just unnecessary. We can remove the server side support in
3.3.0.
As far as the {{writeObject()}} issue I think you should just leave it as
returning a string since a change to the return type will break the interface.
I think you can just call {{toDict()}} as the solution.
There's a good body of tests to validate your changes that execute as part of
the standard build of {{mvn clean install}} (assuming you have a ".glv" file in
your gremlin-python directory. You can read more about that here:
http://tinkerpop.apache.org/docs/current/dev/developer/#python-environment
Hopefully that gets everything fixed up - thanks for doing this.
> TraversalOpProcessor does not support custom serializers
> --------------------------------------------------------
>
> Key: TINKERPOP-1582
> URL: https://issues.apache.org/jira/browse/TINKERPOP-1582
> Project: TinkerPop
> Issue Type: Improvement
> Components: server
> Affects Versions: 3.2.3
> Reporter: Branden Moore
>
> The TraversalOpProcessor has its own ObjectMapper static instance, which
> cannot be configured via the gremlin-server's YAML file. Within the YAML
> file, a user can configure serializers with custom IORegistries, to support
> serialization of custom types. However, the TraversalOpProcessor creates
> its own ObjectMapper, for bytecode deserialization, which does not read
> configuration information from from the YAML file.
> This prevents deserialization of custom bytecode, such as references to a
> custom Predicate class.
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