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From "Doug Cutting (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (AVRO-1268) Add java-class, java-key-class and java-element-class support for stringable types to SpecificData
Date Thu, 07 Mar 2013 18:18:14 GMT

    [ https://issues.apache.org/jira/browse/AVRO-1268?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13596137#comment-13596137

Doug Cutting commented on AVRO-1268:

Or, more generally, the API could become:
 - Object getElementState(Schema);
 - Object readElement(Object state, ...)
This style already used to permit once-per-record lookups with getRecordState, so adding it
to permit once-per-array and once-per-map lookups would be consistent.  Ideally we might add
a state parameter to the read() and write() methods, so that a pre-computed state tree could
be walked in parallel to the schema where all lookups would be pre-computed.
> Add java-class, java-key-class and java-element-class support for stringable types to
> --------------------------------------------------------------------------------------------------
>                 Key: AVRO-1268
>                 URL: https://issues.apache.org/jira/browse/AVRO-1268
>             Project: Avro
>          Issue Type: Improvement
>          Components: java
>    Affects Versions: 1.7.4
>            Reporter: Alexandre Normand
>            Assignee: Alexandre Normand
>            Priority: Minor
>             Fix For: 1.7.5
>         Attachments: AVRO-1268.patch, AVRO-1268.patch
> Stringable types are java classes that can be serialized through strings (which require
a single string constructor and a valid toString() implementation). ReflectData currently
has support from stringable types but it would be desirable to get this feature with SpecificData.

> The work involves changes to the SpecificCompiler (depends on {{@java-class}} support
in AVRO-1267) to generate the specific sources with the proper java type as well as moving
the ReflectDatumReader and ReflectDatumWriter to read the java-class/java-key-class and java-element-class

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