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From "Harsh J (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (AVRO-1421) [ReflectData] Provide a way for parameterised types to be nullable
Date Wed, 08 Jan 2014 04:38:51 GMT

    [ https://issues.apache.org/jira/browse/AVRO-1421?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13865060#comment-13865060

Harsh J commented on AVRO-1421:

Many thanks Doug! Took a look at the tests to see its usage and it appears perfect.

> [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
>            Assignee: Doug Cutting
>            Priority: Minor
>             Fix For: 1.7.6
>         Attachments: AVRO-1421.patch, AVRO-1421.patch
> 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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