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https://issues.apache.org/jira/browse/AVRO-3649?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17623039#comment-17623039
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Christophe Le Saec commented on AVRO-3649:
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Change code to not expose Jackson API to public interface.
For Nullable & withDefault annotations, it's now compatible, like show on [this
unit
test|https://github.com/apache/avro/blob/62e986d5c7c82126bce0bf401d433a54d2db9dfa/lang/java/avro/src/test/java/org/apache/avro/reflect/TestReflect.java#L540-L552].
_withDefault parameter to @Nullable_
would make possible to have :
{code:java}
@Nullable(withDefault="Hello")
@AvroDefault("World")
{code}
As nullable & default value are not link ({_}except the convention that
nullable field without explicit default has null for default, like in Java for
uninitialized field{_}); i think i would be preferable to keep it separate.
> [JAVA] reorder union types to match default value
> -------------------------------------------------
>
> Key: AVRO-3649
> URL: https://issues.apache.org/jira/browse/AVRO-3649
> Project: Apache Avro
> Issue Type: Improvement
> Reporter: Daniel Heinrich
> Priority: Trivial
> Labels: pull-request-available
> Time Spent: 1h 20m
> Remaining Estimate: 0h
>
> The Avro specification requires that a default value matches the first schema
> of a union type.
>
> Using @Nullable on a field will return a union type of the form ["null",
> "<something>"].
> @Nullable also sets the default value to "null".
>
> It is not possible to override this default value w{color:#172b4d}ith
> @AvroDefault because of the order of the schemas in the generated
> union.{color}
>
> It would be nice that union types are automatically reordered to match the
> type of the provided default value.
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