[jira] [Commented] (FLINK-2435) Add support for custom CSV field parsers

["Stephan Ewen (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/FLINK-2435?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14651086#comment-14651086 ] 

Stephan Ewen commented on FLINK-2435:
-------------------------------------

for (2), is this going to hook into the CSV input format, or is it going to be a mapper after the CSV with String field?

> Add support for custom CSV field parsers
> ----------------------------------------
>
>                 Key: FLINK-2435
>                 URL: https://issues.apache.org/jira/browse/FLINK-2435
>             Project: Flink
>          Issue Type: New Feature
>          Components: Java API, Scala API
>    Affects Versions: 0.10
>            Reporter: Fabian Hueske
>
> The {{CSVInputFormats}} have only {{FieldParsers}} for Java's primitive types (byte, short, int, long, float, double, boolean, String).
> It would be good to add support for CSV field parsers for custom data types which can be registered in a {{CSVReader}}. 
> We could offer two interfaces for field parsers.
> 1. The regular low-level {{FieldParser}} which operates on a byte array and offsets.
> 2. A {{StringFieldParser}} which operates on a String that has been extracted by a {{StringParser}} before. This interface will be easier to implement but less efficient.



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