twalthr opened a new pull request #6958: [FLINK-10687] [table] Make flink-formats Scala-free URL: https://github.com/apache/flink/pull/6958 ## What is the purpose of the change This PR makes the `flink-formats` module Scala free by introducing a `flink-table-common` module that is implemented in Java. This module contains all classes that are required across different Maven modules. ## Brief change log The following classes have been migrated to Java: ``` ./src/test/java/org/apache/flink/table/descriptors/DescriptorTestBase.java ./src/test/java/org/apache/flink/table/factories/TableFormatFactoryBaseTest.java ./src/main/java/org/apache/flink/table/utils/TypeStringUtils.java ./src/main/java/org/apache/flink/table/utils/EncodingUtils.java ./src/main/java/org/apache/flink/table/descriptors/Descriptor.java ./src/main/java/org/apache/flink/table/descriptors/DescriptorBase.java ./src/main/java/org/apache/flink/table/descriptors/ConnectorDescriptorValidator.java ./src/main/java/org/apache/flink/table/descriptors/FormatDescriptor.java ./src/main/java/org/apache/flink/table/descriptors/DescriptorValidator.java ./src/main/java/org/apache/flink/table/descriptors/FormatDescriptorValidator.java ./src/main/java/org/apache/flink/table/descriptors/DescriptorProperties.java ./src/main/java/org/apache/flink/table/descriptors/ConnectorDescriptor.java ./src/main/java/org/apache/flink/table/factories/TableFactory.java ./src/main/java/org/apache/flink/table/factories/TableFormatFactory.java ./src/main/java/org/apache/flink/table/factories/DeserializationSchemaFactory.java ./src/main/java/org/apache/flink/table/factories/SerializationSchemaFactory.java ./src/main/java/org/apache/flink/table/factories/TableFormatFactoryBase.java ./src/main/java/org/apache/flink/table/api/ValidationException.java ./src/main/java/org/apache/flink/table/api/TableException.java ./src/main/java/org/apache/flink/table/api/TableSchema.java ``` Additionally, all classes in this module have been annotated with `@Internal` and `@PublicEvolving` accordingly. Since the methods in `Descriptor` were declared with `private[flink]` visibility, they have been migrated to a new `toProperties()` method that is public. ## Verifying this change All existing tests are still successful. ## Does this pull request potentially affect one of the following parts: - Dependencies (does it add or upgrade a dependency): yes - The public API, i.e., is any changed class annotated with `@Public(Evolving)`: no - The serializers: no - The runtime per-record code paths (performance sensitive): no - Anything that affects deployment or recovery: JobManager (and its components), Checkpointing, Yarn/Mesos, ZooKeeper: no - The S3 file system connector: no ## Documentation - Does this pull request introduce a new feature? no - If yes, how is the feature documented? JavaDocs
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