correction: When compared to the jdbc implementation, which works for me using the EnumerableConvention. I see the difference is that the EnumerableProject gets mapped to a EnumerableCalc. Mapped to LogicalProject.NONE https://github.com/apache/calcite/blob/75511b82ab13ff95bc65f6180d40cf1e234b834e/core/src/main/java/org/apache/calcite/prepare/CalcitePrepareImpl.java#L1061 Then to EnumerableCalc https://github.com/apache/calcite/blob/75511b82ab13ff95bc65f6180d40cf1e234b834e/core/src/main/java/org/apache/calcite/prepare/CalcitePrepareImpl.java#L1065
On Mon, Jan 29, 2024 at 10:10 AM Eric Berryman <eric.berry...@gmail.com> wrote: > When compared to the jdbc implementation, which works for me using the > EnumerableConvention. > I see the difference is that the EnumerableProject gets mapped to a > CalcProject. > Mapped to Project.NONE > > https://github.com/apache/calcite/blob/75511b82ab13ff95bc65f6180d40cf1e234b834e/core/src/main/java/org/apache/calcite/prepare/CalcitePrepareImpl.java#L1061 > Then to CalcProject > > https://github.com/apache/calcite/blob/75511b82ab13ff95bc65f6180d40cf1e234b834e/core/src/main/java/org/apache/calcite/prepare/CalcitePrepareImpl.java#L1065 > > That sounds like this rule: CoreRules.PROJECT_TO_CALC > But, I don't see this getting applied as such. > > Thank you again, > Eric > > On Sun, Jan 28, 2024 at 12:35 PM Eric Berryman <eric.berry...@gmail.com> > wrote: > >> I was trying some examples, the first being the EndToEndExampleBindable: >> >> https://github.com/zabetak/calcite/blob/demo-january-2021/core/src/test/java/org/apache/calcite/examples/foodmart/java/EndToEndExampleBindable.java >> >> This worked fine for me, but when I attempted to use the pattern in >> EndToEndExampleEnumerable: >> >> https://github.com/zabetak/calcite/blob/demo-january-2021/core/src/test/java/org/apache/calcite/examples/foodmart/java/EndToEndExampleEnumerable.java >> >> I am getting the following error message: >> Suppressed: java.lang.UnsupportedOperationException: null >> at >> org.apache.calcite.adapter.enumerable.EnumerableProject.implement(EnumerableProject.java:91) >> at >> org.apache.calcite.adapter.enumerable.EnumerableRelImplementor.implementRoot(EnumerableRelImplementor.java:114) >> ... 53 common frames omitted >> >> from the line: >> Bindable<Object[]> executablePlan = EnumerableInterpretable.toBindable( >> new HashMap<>(), >> null, >> (EnumerableRel) phyPlan, >> EnumerableRel.Prefer.ARRAY); >> >> I'm confused how the EnumerableProject implement method has this >> java.lang.UnsupportedOperationException, and what am I missing. I'm not >> quite connecting the dots on this, and how it should look. >> >> Thank you! >> Eric >> >>
