preprocess

abstract fun preprocess(jdbcValue: J): D

Converts the given jdbcValue: J to a D.

If you intend to create a org.jetbrains.kotlinx.dataframe.columns.ColumnGroup, return a org.jetbrains.kotlinx.dataframe.DataRow here.

If you intend to create a org.jetbrains.kotlinx.dataframe.columns.FrameColumn, return a org.jetbrains.kotlinx.dataframe.DataFrame here.