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ASF GitHub Bot logged work on BEAM-9384: ---------------------------------------- Author: ASF GitHub Bot Created on: 27/Feb/20 07:52 Start Date: 27/Feb/20 07:52 Worklog Time Spent: 10m Work Description: iemejia commented on pull request #10974: [BEAM-9384] Add SchemaRegistry.getSchemaCoder to get SchemaCoders for registered types URL: https://github.com/apache/beam/pull/10974#discussion_r384960299 ########## File path: sdks/java/core/src/main/java/org/apache/beam/sdk/schemas/SchemaRegistry.java ########## @@ -288,6 +281,38 @@ public void registerSchemaProvider(SchemaProvider schemaProvider) { return getProviderResult((SchemaProvider p) -> p.fromRowFunction(typeDescriptor)); } + /** + * Retrieve a {@link SchemaCoder} for a given {@link Class} type. If no schema exists, throws + * {@link * NoSuchSchemaException}. + */ + public <T> SchemaCoder<T> getSchemaCoder(Class<T> clazz) throws NoSuchSchemaException { + return getSchemaCoder(TypeDescriptor.of(clazz)); + } + + /** + * Retrieve a {@link SchemaCoder} for a given {@link TypeDescriptor} type. If no schema exists, + * throws {@link * NoSuchSchemaException}. + */ + public <T> SchemaCoder<T> getSchemaCoder(TypeDescriptor<T> typeDescriptor) + throws NoSuchSchemaException { + return SchemaCoder.of( + getSchema(typeDescriptor), + typeDescriptor, + getToRowFunction(typeDescriptor), + getFromRowFunction(typeDescriptor)); Review comment: I agree with you in the fact that `SchemaCoder` is an internal detail that regular users (authors of Pipelines) should not care about. I felt tempted to mark this method as `@Internal` however PTransform authors (e.g. IO authors) will find this useful (as I did for the PR I mention above for KafkaIO schema support), so probably worth to let it available, also I cannot think of a better place to put this method than here. ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: us...@infra.apache.org Issue Time Tracking ------------------- Worklog Id: (was: 394008) Time Spent: 1h (was: 50m) > Add SchemaRegistry.getSchemaCoder to get SchemaCoders for registered types > -------------------------------------------------------------------------- > > Key: BEAM-9384 > URL: https://issues.apache.org/jira/browse/BEAM-9384 > Project: Beam > Issue Type: Improvement > Components: sdk-java-core > Reporter: Ismaël Mejía > Assignee: Ismaël Mejía > Priority: Minor > Time Spent: 1h > Remaining Estimate: 0h > > PTransforms that are parameterized by types may be able to infer a valid > SchemaCoder for a given type from the SchemaRegistry (if a Schema for the > given type is available). This method will provide a unified place to do that. -- This message was sent by Atlassian Jira (v8.3.4#803005)