[jira] [Commented] (PHOENIX-1661) Implement built-in functions for JSON

["Wen-Hsiu,Chang (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/PHOENIX-1661?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16311309#comment-16311309 ] 

Wen-Hsiu,Chang commented on PHOENIX-1661:
-----------------------------------------

[~lovegn28] and I are in the same group.
And we wrote a get_json_object function below. Please take a look.
[^PHOENIX-1661-00.patch]

> Implement built-in functions for JSON
> -------------------------------------
>
>                 Key: PHOENIX-1661
>                 URL: https://issues.apache.org/jira/browse/PHOENIX-1661
>             Project: Phoenix
>          Issue Type: Sub-task
>            Reporter: James Taylor
>            Assignee: LeiWang
>              Labels: JSON, Java, SQL, gsoc2015, mentor
>         Attachments: Implement built-in functions for JSON.pdf, PHOENIX-1661-00.patch, PHOENIX-1661.patch, PhoenixJSONSpecification-First-Draft.pdf
>
>
> Take a look at the JSON built-in functions that are implemented in Postgres (http://www.postgresql.org/docs/9.3/static/functions-json.html) and implement the same for Phoenix in Java following this guide: http://phoenix-hbase.blogspot.com/2013/04/how-to-add-your-own-built-in-function.html
> Examples of functions include ARRAY_TO_JSON, ROW_TO_JSON, TO_JSON, etc. The implementation of these built-in functions will be impacted by how JSON is stored in Phoenix. See PHOENIX-628. An initial implementation could work off of a simple text-based JSON representation and then when a native JSON type is implemented, they could be reworked to be more efficient.



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