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https://issues.apache.org/jira/browse/AVRO-1421?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Harsh J updated AVRO-1421:
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Description:
Although possible with SpecificData (schema generated classes), the ReflectData
currently lacks a way to have a declaration such as
{code}java.util.List<String> myList;{code} to be able to generate a nullable
schema {code}{ "type": "array", "items": ["null", "string"] }{code} instead of
the current {code}{ "type": "array", "items": "string" }{code}
There are {{@Union}} and {{@Nullable}} annotations available, but they cannot
be applied to the above parameterised Collection declaration.
was:
Although possible with SpecificData (schema generated classes), the ReflectData
currently lacks a way to have a declaration such as
{code}java.util.List<String> myList;{code} to be able to generate a nullable
schema {code}{ "type": "array", "items": ["null", "string"] }{code} instead of
the current {code}{ "type": "array", "items": "string" }{code}.
There are {{@Union}} and {{@Nullable}} annotations available, but they cannot
be applied that to the above parameterised Collection declaration.
> [ReflectData] Provide a way for parameterised types to be nullable
> ------------------------------------------------------------------
>
> Key: AVRO-1421
> URL: https://issues.apache.org/jira/browse/AVRO-1421
> Project: Avro
> Issue Type: Improvement
> Components: java
> Affects Versions: 1.7.0
> Reporter: Harsh J
> Priority: Minor
>
> Although possible with SpecificData (schema generated classes), the
> ReflectData currently lacks a way to have a declaration such as
> {code}java.util.List<String> myList;{code} to be able to generate a nullable
> schema {code}{ "type": "array", "items": ["null", "string"] }{code} instead
> of the current {code}{ "type": "array", "items": "string" }{code}
> There are {{@Union}} and {{@Nullable}} annotations available, but they cannot
> be applied to the above parameterised Collection declaration.
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