Hi Jess, In most cases the internal representation of date objects in the Enumerable convention are longs [1]. Keep in mind that there are also other cases (e.g., [2]) where there are conversion of dates to other types.
Best, Stamatis [1] https://github.com/apache/calcite/blob/35c5f57d7db2b4745086178602ca69195ffb858e/core/src/main/java/org/apache/calcite/jdbc/JavaTypeFactoryImpl.java#L193 [2] https://github.com/apache/calcite/blob/35c5f57d7db2b4745086178602ca69195ffb858e/core/src/main/java/org/apache/calcite/adapter/enumerable/EnumUtils.java#L243 On Fri, Oct 4, 2019 at 5:26 PM Jess Balint <jbal...@gmail.com> wrote: > I'm returning string objects from my enumerable, but getting an exception > when trying to use the MONTH function which compiles to: > > > > org.apache.calcite.avatica.util.DateTimeUtils.unixDateExtract(org.apache.calcite.avatica.util.TimeUnitRange.MONTH, > org.apache.calcite.runtime.SqlFunctions.toInt(current[1]))}; > > current[1] is a string here and an exception is thrown. are dates expected > to be java.util.Date objects? Is there documentation on this? > > Thanks. > > Jess >
