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From "Carter (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-11679) Replace "HTable" with "HTableInterface" where backwards-compatible
Date Thu, 21 Aug 2014 18:21:11 GMT

    [ https://issues.apache.org/jira/browse/HBASE-11679?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14105714#comment-14105714
] 

Carter commented on HBASE-11679:
--------------------------------

Created HBASE-11797 and starting discussion over there.

> Replace "HTable" with "HTableInterface" where backwards-compatible
> ------------------------------------------------------------------
>
>                 Key: HBASE-11679
>                 URL: https://issues.apache.org/jira/browse/HBASE-11679
>             Project: HBase
>          Issue Type: Improvement
>            Reporter: Carter
>            Assignee: Carter
>         Attachments: HBASE_11679.patch, HBASE_11679.patch, HBASE_11679_v3.patch
>
>
> This is a refactor to move more of the code towards using interfaces for proper encapsulation
of logic.
> The amount of code touched is large, but it should be fairly easy to review.  It changes
variable declarations from HTable to HTableInterface where the following holds:
> # The declaration being updated won't break assignment
> # The declaration change does not break the compile (eg trying to access non-interface
methods)
> The two main situations are to change something like this:
> {code}
> HTable h = new HTable(c, tn);
> {code}
> to
> {code}
> HTableInterface h = new HTable(c, tn);
> {code}
> and this:
> {code}
> public void doSomething(HTable h) { ... }
> {code}
> to this:
> {code}
> public void doSomething(HTableInterface h) { ... }
> {code}
> This gets most of the obvious cases out of the way and prepares for more complicated
interface refactors in the future.  In method signatures, I changed parameters, but did _not_
change any public or protected method return values, since that would violate criteria #1
above and break compatibility.



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