[jira] [Updated] (HBASE-5548) Add ability to get a table in the shell

["Jesse Yates (Updated) (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HBASE-5548?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jesse Yates updated HBASE-5548:
-------------------------------

    Release Note: 
Adding the ability to get a reference to a table in the shell.

Previously, all commands that acted on a table would need to take the name of the table as a string, which is annoying in an OO REPL. This patch introduces the ability to get and hold a reference to a table both on creation (via create(...)) and at will (via get_table(...)).

Further, to actually make the table useful, modifications to table specific class were made so you can have a reference and just do things like put, scan, get, etc. on that table reference. To accommodate new table functionality, table specific methods are easily added (one line) in a dynamic fashion via class methods in the Table. See examples in get, put, scan, etc..

There is also a lot of admin functionality tied to a table - things like disabling, dropping, describing, etc - that were added to the table class. Now you can do things like 'table.disable' and 'table.describe'. Again these were dynamically added, so new admin functionality for a table is as simple as adding the method name to one line in the Table class. 
    
> Add ability to get a table in the shell
> ---------------------------------------
>
>                 Key: HBASE-5548
>                 URL: https://issues.apache.org/jira/browse/HBASE-5548
>             Project: HBase
>          Issue Type: Improvement
>          Components: shell
>            Reporter: Jesse Yates
>            Assignee: Jesse Yates
>             Fix For: 0.96.0, 0.94.1
>
>         Attachments: ruby_HBASE-5528-v0.patch, ruby_HBASE-5548-v1.patch, ruby_HBASE-5548-v2.patch, ruby_HBASE-5548-v3.patch
>
>
> Currently, all the commands that operate on a table in the shell first have to take the table as name as input. 
> There are two main considerations:
> * It is annoying to have to write the table name every time, when you should just be able to get a reference to a table
> * the current implementation is very wasteful - it creates a new HTable for each call (but reuses the connection since it uses the same configuration)
> We should be able to get a handle to a single HTable and then operate on that.

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