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https://issues.apache.org/jira/browse/HBASE-2239?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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stack updated HBASE-2239:
-------------------------
Hadoop Flags: [Reviewed]
Status: Patch Available (was: Open)
> [IHBase] Improve the expression classes by adding the ability to generate
> filters from them.
> --------------------------------------------------------------------------------------------
>
> Key: HBASE-2239
> URL: https://issues.apache.org/jira/browse/HBASE-2239
> Project: Hadoop HBase
> Issue Type: Improvement
> Components: contrib
> Affects Versions: 0.20.3
> Reporter: Dan Washusen
> Fix For: 0.20.4
>
> Attachments: HBASE-2239.patch
>
>
> One of the requirements of IHBase is that the a filter should be provided
> that at least matches the index expression hint. The IHBase expression
> classes could easily be used to generate a filter that can be used on the
> scan...
> For example:
> {code}
> Expression expression = Expression
> .or(
> Expression.comparison(columnName1, qualifer1, operator1, value1)
> )
> .or(
> Expression.and()
> .and(Expression.comparison(columnName2, qualifer2, operator2,
> value2))
> .and(Expression.comparison(columnName3, qualifer3, operator3,
> value3))
> );
> Filter filter = expression.toFilter();
> {code}
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