[jira] [Created] (TAJO-79) Refactor and Improve TajoCli

["Hyunsik Choi (JIRA)" <ji...@apache.org>]

Hyunsik Choi created TAJO-79:
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             Summary: Refactor and Improve TajoCli
                 Key: TAJO-79
                 URL: https://issues.apache.org/jira/browse/TAJO-79
             Project: Tajo
          Issue Type: Improvement
          Components: cli
            Reporter: Hyunsik Choi
            Assignee: Hyunsik Choi
             Fix For: 0.2-incubating


This patch improves TajoCli. This improvement is not backward compatible, but this improvement makes TajoCli  more intuitive and similar to PostgreSQL cli. So, I believe this gives users better experience. In addition, I've added some useful options.

In detail, the patch does as follows:
 * Refactor TajoCli to be based on command pattern
 * multiple lines for one SQL statement are recorded as one history
 * command prefix '/' is replaced by '\'.
 * the command '/t' is replaced by '\d'.
 ** '\d' lists tables or describes a table.
 * jline version is updated to 2.11.
 * add a help command '\?' to list all commands that can be used in TajoCli
 * add a cli option '-c' for running a single SQL statement or command
 * add a cli option '-f' for executing statements included in a text file

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