[jira] [Resolved] (PHOENIX-1620) Add API for getting tenant ID from an HBase row of a Phoenix table

["James Taylor (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/PHOENIX-1620?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

James Taylor resolved PHOENIX-1620.
-----------------------------------
       Resolution: Fixed
    Fix Version/s: 4.3
         Assignee: James Taylor

> Add API for getting tenant ID from an HBase row of a Phoenix table
> ------------------------------------------------------------------
>
>                 Key: PHOENIX-1620
>                 URL: https://issues.apache.org/jira/browse/PHOENIX-1620
>             Project: Phoenix
>          Issue Type: Bug
>            Reporter: James Taylor
>            Assignee: James Taylor
>             Fix For: 4.3
>
>         Attachments: 1620.patch, 1620_v2.patch
>
>
> Provide a means for HBase-level tools to get the tenant ID from an HBase row of any Phoenix table by adding the following method to PhoenixRuntime:
>     public static Expression getTenantIdExpression(PhoenixConnection conn, String fullTableName);
> Then you'd call this once to get back an Expression which could be used again and again to get the tenantId from a List<Cell>, like this:
>     Tuple tuple = new MultiKeyValueTuple();
>     ImmutableBytesWritable ptr = new ImmutableBytesWritable();
>     Expression expression = PhoenixRuntime.getTenantIdExpression(conn, fullTableName);
>     while (more rows) {
>         List<Cell> cells = get cells from row
>         tuple.setKeyValues(cells);
>         expression.evaluate(tuple, ptr);
>         // At this point ptr would point to the tenant ID with its offset and length
>     }



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