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From "Doug Cutting (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (AVRO-1421) [ReflectData] Provide a way for parameterised types to be nullable
Date Tue, 07 Jan 2014 23:17:54 GMT

     [ https://issues.apache.org/jira/browse/AVRO-1421?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Doug Cutting updated AVRO-1421:

    Attachment: AVRO-1421.patch

Here's a patch that implements an @AvroSchema annotation for classes, fields, parameters and
return values.

> [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
>         Attachments: 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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