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https://issues.apache.org/jira/browse/CSV-109?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13940467#comment-13940467
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Gary Gregory commented on CSV-109:
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Something to consider post-1.0. Patches welcome of course :)

> Support external CSV schema definition
> --------------------------------------
>
>                 Key: CSV-109
>                 URL: https://issues.apache.org/jira/browse/CSV-109
>             Project: Commons CSV
>          Issue Type: Wish
>          Components: Parser
>    Affects Versions: 1.0
>            Reporter: Jay Zylstra
>            Priority: Minor
>
> As XML has XSD, so CSV needs an external schema definition file which defines 
> the schema of the flat file format and the values it contains.  
> Programmatically adding constraints, as supported by 
> {{org.supercsv.cellprocessor.constraint.StrRegEx}}, are useful but not 
> portable.  Fortunately, Microsoft has already created such a CSV schema 
> definition file format called 
> [Schema.ini|http://msdn.microsoft.com/en-us/library/ms709353(v=vs.85).aspx].
> It is my suggestion to add file and data parsing validation to Apache Commons 
> CSV by adopting support for _Schema.ini_, bringing this long overdue 
> functionality to the Java world.



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