Vamsi Subhash Achanta created AVRO-2243:
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Summary: Add support for adding Union types for a Class without
@Union annotation when not possible to mutate the class
Key: AVRO-2243
URL: https://issues.apache.org/jira/browse/AVRO-2243
Project: Avro
Issue Type: Improvement
Components: java
Affects Versions: 1.8.2
Reporter: Vamsi Subhash Achanta
This patch facilitates the addition of Union types for a given class. This is
equivalent to adding an @Union annotation with values. But this can help in
cases where you cannot mutate the class to annotate it (or don't want to use
java-agent to transform/mutate the class at runtime).
UseCase:
In our project, we are using ReflectData to generate schema for external jar
imported classes which cannot be mutated. In this scenario, we cannot add
@Union annotation to the base class to add all implemenations of the derived
classes. So, when generating schema, the derived classes are not included.
This patch will enable us to add the union type information so that ReflectData
can generate the schema with union types also in it.
Please let us know if you have any questions. I would make corresponding
changes. Thanks
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