[jira] [Assigned] (FLINK-27835) Introduce LeafPredicate interface and children method in Predicate

["Jingsong Lee (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/FLINK-27835?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jingsong Lee reassigned FLINK-27835:
------------------------------------

    Assignee: Caizhi Weng

> Introduce LeafPredicate interface and children method in Predicate
> ------------------------------------------------------------------
>
>                 Key: FLINK-27835
>                 URL: https://issues.apache.org/jira/browse/FLINK-27835
>             Project: Flink
>          Issue Type: Sub-task
>          Components: Table Store
>    Affects Versions: table-store-0.2.0
>            Reporter: Caizhi Weng
>            Assignee: Caizhi Weng
>            Priority: Major
>              Labels: pull-request-available
>
> We'd like to expose a more simple interface in the row data abstraction layer. Instead of the {{withPartitionFilter}}, {{withKeyFIlter}} and {{withValueFilter}} methods in {{FileStoreScan}}, we'd like to introduce {{RowDataScan}} containing only one {{withFilter}} method. We'll enclose the logic to extract partition predicate or key predicate in this method.
> To extract partition predicate from a big predicate object we'll need to look into this predicate tree. That's why we'll need {{children}} method and {{LeafPredicate}} interface to help us represent this tree structure.



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