Xu Yang created FLINK-13668:
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Summary: 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
_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.*
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