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From "stack (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-14997) Move compareOp and Comparators out of filter to client package
Date Wed, 06 Sep 2017 23:05:00 GMT

    [ https://issues.apache.org/jira/browse/HBASE-14997?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16156172#comment-16156172
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stack commented on HBASE-14997:
-------------------------------

.001 swap in a generic ComparatorOperator class in place of the filter CompareOps. Plumb it
all the ways through. Fixes API.

> Move compareOp and Comparators out of filter to client package
> --------------------------------------------------------------
>
>                 Key: HBASE-14997
>                 URL: https://issues.apache.org/jira/browse/HBASE-14997
>             Project: HBase
>          Issue Type: Sub-task
>            Reporter: Enis Soztutar
>            Priority: Critical
>             Fix For: 2.0.0-alpha-3
>
>         Attachments: HBASE-14997.master.001.patch
>
>
> {{Table.checkAndPut()}} and its cousins depend on CompareOp from the filter package.
Originally, ComparaOp and ByteArrayComparable, and various "comparators" have been used in
filters, so these are in the filter package. However, for checkAndPut(), etc we depend on
the filter subpackage although these are not filter related operations. We can use some clean
up.
> {code}
>   boolean checkAndPut(byte[] row, byte[] family, byte[] qualifier,
>     CompareFilter.CompareOp compareOp, byte[] value, Put put) throws IOException;
> {code}
> Some ideas
>  - Cleanup ByteArrayComparable interface (see the TODO at the class) 
>  - Maybe introduce a {{Condition}} or a similar concept and do {{checkAndPut(Condition
condition, Put put)}} and change filters to use that as well. 
>  - Introducing Condition like thing will allow us to have an interface like: {{checkAndMutate(List<Condition>
conditions, List<Mutation> mutations)}}. 
>  - BinaryComparator, etc are not "Comparators", they are comparables. 



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