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https://issues.apache.org/jira/browse/FREEMARKER-144?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Siegfried Goeschl resolved FREEMARKER-144.
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Resolution: Fixed
> [freemarker-cli] Proof Of Concept for providing DataFrames
> ----------------------------------------------------------
>
> Key: FREEMARKER-144
> URL: https://issues.apache.org/jira/browse/FREEMARKER-144
> Project: Apache Freemarker
> Issue Type: Task
> Reporter: Siegfried Goeschl
> Assignee: Siegfried Goeschl
> Priority: Major
>
> Sometime users need to massage tabular data coming from CSV or an Excel
> sheet, eg.. joining on columns
> * There is some ad-hoc code in the FreeMarker Generator CSV tool
> * I had a look at available DataFrame libraries (see
> https://medium.com/@thijser/doing-cool-data-science-in-java-how-3-dataframe-libraries-stack-up-5e6ccb7b437)
> I finally found [nRo/DataFrame|https://github.com/nRo/DataFrame] and it would
> make a good fit
> * Comes with MIT licence
> * Depends only on `antlr4-runtime` and `slf4j`
> * It's API would fit nicely into a FreeMarker Template
> * It provides a DataFrame implementation and some basic transformations
> * It currently does not support temporal column types
> What I would like to implement is
> * Reading CSV & Excel into a DataFrame
> * Write a DataFrame to CSV
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