Thomas Groh created BEAM-1446:
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Summary: Create should take a TypeDescriptor as an alternative to
explicitly specifying the Coder
Key: BEAM-1446
URL: https://issues.apache.org/jira/browse/BEAM-1446
Project: Beam
Issue Type: Improvement
Components: sdk-java-core
Reporter: Thomas Groh
Priority: Minor
{{getDefaultCreateCoder}} is provided with the Pipeline's {{CoderRegistry}},
which enables it to use standard Coder Inference. For the construction of the
Default Create Coder, explicitly providing the TypeDescriptor allows it to ask
the CoderRegistry directly rather than attempting to reconstruct the
TypeDescriptor based on the elements within the Create.
This also makes some coder specifications significantly more terse, as the type
signature must be respecified but the entire coder need not be constructed
(e.g. {{KvCoder.of(VarIntCoder.of(), StringUtf8Coder.of());}} becomes {{new
TypeDescriptor<KV<Integer, String>>() {};}}, which is at least somewhat simpler
to type out.
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