beam-commits mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Thomas Groh (JIRA)" <j...@apache.org>
Subject [jira] [Created] (BEAM-1446) Create should take a TypeDescriptor as an alternative to explicitly specifying the Coder
Date Thu, 09 Feb 2017 17:20:42 GMT
Thomas Groh created BEAM-1446:
---------------------------------

             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.



--
This message was sent by Atlassian JIRA
(v6.3.15#6346)

Mime
View raw message