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From kaspersorensen <...@git.apache.org>
Subject [GitHub] metamodel pull request: Csv
Date Sat, 23 May 2015 17:27:24 GMT
Github user kaspersorensen commented on the pull request:

    https://github.com/apache/metamodel/pull/17#issuecomment-104928231
  
    Thinking about this some more, I guess the main principle that I am trying to enforce
is:
    
    _metadata about a column must be consistent with the values you get when you query that
column_
    
    In other words, it is currently consistent that ColumnType is always STRING because we
always return a String value.
    
    I would be very open to a way of working with CSV files where you could specify/override
the column type of certain columns. That would actually be a pretty cool feature - very related,
but a different way to see it.
    
    If that would be the case then you could first use the untouched CsvDataContext to analyze
the content of various columns. If you feel confident enough you might then switch the column
type from STRING to something else. And when it is then set to eg. INTEGER then our cast method
should automatically apply a Integer cast/conversion operation. Same with other types then.
    
    Would that maybe be a model that fits us all?


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