[jira] [Closed] (FLINK-13668) Add abstract classes for three typical scenarios of (Flat)Mapper.

["Dong Lin (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/FLINK-13668?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Dong Lin closed FLINK-13668.
----------------------------
    Resolution: Won't Do

> Add abstract classes for three typical scenarios of (Flat)Mapper.
> -----------------------------------------------------------------
>
>                 Key: FLINK-13668
>                 URL: https://issues.apache.org/jira/browse/FLINK-13668
>             Project: Flink
>          Issue Type: Sub-task
>          Components: Library / Machine Learning
>            Reporter: Xu Yang
>            Priority: Major
>              Labels: pull-request-available
>          Time Spent: 10m
>  Remaining Estimate: 0h
>
> _FlatMapper transforms one Row type data into zero_, _one_, _or more Row type result data_, _and Mapper transforms one Row type data into one Row type result data. For most of practical_ *scenarios*, *the outputs are single column. Using these extend classes*, *we can be more focus on the algorithm development.*
>  * *Add SISOFlatMapper for the Single Input column and Single Output column scenario.*
>  * *Add SISOMapper for the Single Input column and Single Output column scenario.*
>  * *Add MISOMapper for the Multi Input column and Single Output column scenario.*
>  * *Add Param definition for SISOFlatMapper*
>  * *Add Param definition for SISOMapper*
>  * *Add Param definition for MISOMapper*



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