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https://issues.apache.org/jira/browse/DRILL-7006?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Arina Ielchiieva updated DRILL-7006:
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Labels: ready-to-commit (was: )
> Support type conversion shims in RowSetWriter
> ---------------------------------------------
>
> Key: DRILL-7006
> URL: https://issues.apache.org/jira/browse/DRILL-7006
> Project: Apache Drill
> Issue Type: Improvement
> Affects Versions: 1.15.0
> Reporter: Paul Rogers
> Assignee: Paul Rogers
> Priority: Minor
> Labels: ready-to-commit
> Fix For: 1.16.0
>
>
> The {{RowSet}} tools include a {{RowSetWriter}} for populating a batch of
> vectors. A set of "column writers" exist: one for each kind of vector. These
> classes provide methods to write a value into a vector. For example, the
> {{VarcharColumnWriter}} provides a {{setString())}} method to set the value.
> The current writers provide only "natural" conversions: from Java String to
> Varchar, from Java Double to FLOAT8 and so on. That is, the methods
> implemented for each type are those that provide s single, unambiguous
> conversion.
> This ticket asks to add a translation layer: to allow, say, writing an Int
> column using a String (parsed according to some rules). Or, to convert from a
> string to a Date using some format.
> The goal is not to provide the type conversions themselves, rather it is to
> provide a way to insert the type conversion "shim" on top of the "native"
> column writer in a way that is transparent to code using the row set writer.
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