Liya Fan created ARROW-12310:
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Summary: [Java] ValueVector#getObject should support covariance
for complex types
Key: ARROW-12310
URL: https://issues.apache.org/jira/browse/ARROW-12310
Project: Apache Arrow
Issue Type: Improvement
Components: Java
Reporter: Liya Fan
Assignee: Liya Fan
Currently, the {{ValueVector#getObject}} API supports covariance for primitive
types.
For example, {{IntVector#getObject}} returns {{Integer}} while
{{BitVector#getObject}} returns {{Boolean}}.
For complex types, we should also support covariance. For example,
{{ListVector#getObject}} should return a {{List}}
This will help reduce unnecessary casts, and enforce type safety.
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