AutoValue code generator
1. AutoValue code generator
person: In this section, we will explore some of the utility classes that the Beam SDK provides for generating POJOs, which stands for Plain or Java Object. Overall, Apache Beam schemas are the best way to represent objects in a pipeline because of the intuitive way they allow you to work with structure data. However, there are still places where a POJO is needed while developing pipelines in Java, for example, when dealing with key value objects or handling the object state. Hand-building POJOs require you to code appropriate overrides for the equal and hash code matters, which can be time consuming and error-prone. You can end up with inconsistent applications easily. To avoid this, use the AutoValue class builder to generate POJOs. This ensures that the necessary overrides are covered and lets you avoid the potential errors introduced by hand-coding. AutoValue is heavily used within the Apache Beam code base, so familiarity with it is useful if you want to develop Apache Beam pipelines on dataflow using Java SDK. AutoValue can also be used in concert with Apache Beam schemas if you add on @DefaultSchemas annotation. For more information, see "Creating Schemas" in reference section in the end. For more information on AutoValue, see AutoValue docs in the reference section. Remember, this is only applicable to Java-based pipelines.2. Let's practice!
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