wuchong opened a new pull request #7906: [FLINK-11830][table-planner-blink] Introduce CodeGeneratorContext to maintain reusable statements URL: https://github.com/apache/flink/pull/7906 ## What is the purpose of the change Introduce `CodeGeneratorContext` to maintain reusable statements for code generation. The `CodeGeneratorContext` will keep all the reusable statements which will be the basic class for code generation. In the future, we will introduce FunctionCodeGeneration, AggregateCodeGeneration, etc... and they will depend on the `CodeGeneratorContext` to store reusable statements. ## Brief change log - Introduce `CodeGeneratorContext`. - Introduce `CompileUtils` in `table-runtime-blink` to support compile code in runtime. - Introduce `GeneratedClass` in `table-runtime-blink` to wrap generated code and class name to support easy instantiation. - Copy `TableConfig` to `table-planner-blink` because `CodeGeneratorContext` depends on it. - Introduce `CodeGenUtils` to package utilities for codegen (will add various `generateXXX` in FLINK-11788). - Introduce `TypeCheckUtils` to check types. ## Verifying this change The `CodeGeneratorContext` will be covered in later FLINK-11788. Added a `CompileUtilsTest` to test compile classes with cache. ## Does this pull request potentially affect one of the following parts: - Dependencies (does it add or upgrade a dependency): (no) - 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? (not applicable)
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