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Posted to github@beam.apache.org by GitBox <gi...@apache.org> on 2020/07/13 16:26:36 UTC
[GitHub] [beam] sclukas77 opened a new pull request #12237: [BEAM-10407] Revamped SchemaCapableIOProvider interface to SchemaIOProvider
sclukas77 opened a new pull request #12237:
URL: https://github.com/apache/beam/pull/12237
Revamped SchemaCapableIOProvider to SchemaIOProvider in anticipation of schema aware IOs, which, unlike SchemaCapableIOProviders, do not require a data schema passed from the user. A requiresDataSchema boolean is added to SchemaIOProvider interface to distinguish between the cases where a schema passed from the user is necessary or the schema can be inferred from the data structure. The discussion can be seen in the comments of the design doc:
https://docs.google.com/document/d/1ic3P8EVGHIydHQ-VMDKbN9kEdwm7sBXMo80VrhwksvI/edit
R:@TheNeuralBit
R:@robinyqiu
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[GitHub] [beam] robinyqiu merged pull request #12237: [BEAM-10407] Revamped SchemaCapableIOProvider interface to SchemaIOProvider
Posted by GitBox <gi...@apache.org>.
robinyqiu merged pull request #12237:
URL: https://github.com/apache/beam/pull/12237
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[GitHub] [beam] robinyqiu commented on a change in pull request #12237: [BEAM-10407] Revamped SchemaCapableIOProvider interface to SchemaIOProvider
Posted by GitBox <gi...@apache.org>.
robinyqiu commented on a change in pull request #12237:
URL: https://github.com/apache/beam/pull/12237#discussion_r453821984
##########
File path: sdks/java/io/google-cloud-platform/src/main/java/org/apache/beam/sdk/io/gcp/pubsub/PubsubSchemaCapableIOProvider.java
##########
@@ -116,11 +116,21 @@ public Schema configurationSchema() {
public PubsubSchemaIO from(String location, Row configuration, Schema dataSchema) {
validateConfigurationSchema(configuration);
validateDlq(configuration.getValue("deadLetterQueue"));
- validateEventTimestamp(dataSchema);
+ validateDataSchema(dataSchema);
return new PubsubSchemaIO(location, configuration, dataSchema);
}
- private void validateEventTimestamp(Schema schema) {
+ @Override
+ public Boolean requiresDataSchema() {
+ return true;
+ }
+
+ private void validateDataSchema(Schema schema) {
+ if (requiresDataSchema() && schema == null) {
Review comment:
Consider removing `requiresDataSchema()` because it is always true here?
I know this is the general logic but in this specific provider this call is not necessary.
##########
File path: sdks/java/core/src/main/java/org/apache/beam/sdk/schemas/io/SchemaIOProvider.java
##########
@@ -47,5 +48,8 @@
* resides there, and some IO-specific configuration object. Can throw a {@link
* InvalidConfigurationException} or a {@link InvalidSchemaException}.
*/
- SchemaIO from(String location, Row configuration, Schema dataSchema);
+ SchemaIO from(String location, Row configuration, @Nullable Schema dataSchema);
+
+ /** Indicates whether the dataSchema value is necessary. */
+ Boolean requiresDataSchema();
Review comment:
Prefer return primitive `boolean` type?
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