I implement an LDAPUnion and rule to convert from logicalunion, and of course, the error goes away. But I didn’t implement the union correctly, so nothing is returned in my query. Is there a way to have my LDAPUnion use EnumerableUnion, or a way to not have LDAPUnion and take care of this with a rule?
Thank you again! Eric On Tue, Jul 16, 2024 at 14:24 Eric Berryman <eric.berry...@gmail.com> wrote: > Well, I was wrong. That didn’t solve my problem with : > > Missing conversion is LogicalUnion[convention: NONE -> LDAP] > > Do I have to implement my own union? Is there a way I could just use the > EnumerableUnion? > ie. NONE -> Enumerable and skip implementing one for my ldap datastore? > > Thank you! > Eric > > On Tue, Jul 16, 2024 at 09:00 Eric Berryman <eric.berry...@gmail.com> > wrote: > >> When I register my tablescan object, and add my rules, I also added a >> removeRule for EnumerableRules.ENUMERABLE_MERGE_UNION_RULE, and now >> everything works with an offset also. >> >> Although, I don’t know why this is. I noticed the EnumerableMergeUnion >> object in the plan, and thought I would try to remove it, because it was >> different. >> >> Any explanation is appreciated, thank you!!! >> Eric >> >> >> On Mon, Jul 15, 2024 at 18:02 Eric Berryman <eric.berry...@gmail.com> >> wrote: >> >>> Hello! >>> >>> I seem to have an issue with my new limit rule which pushes down to the >>> datastore. It works fine, unless I add an offset to the fetch. Where I end >>> up with the following error: >>> There are not enough rules… Missing conversion is >>> LogicalUnion[convention: NONE -> LDAP] >>> >>> Why would this only come up when an offset value is added? >>> >>> Thank you! >>> Eric >>> >>> >>> On Fri, Jun 21, 2024 at 09:25 Eric Berryman <eric.berry...@gmail.com> >>> wrote: >>> >>>> That’s perfect >>>> >>>> https://github.com/apache/calcite/blob/main/cassandra/src/main/java/org/apache/calcite/adapter/cassandra/CassandraRules.java#L401 >>>> >>>> Thank you for such a quick response! >>>> Eric >>>> >>>> >>>> On Fri, Jun 21, 2024 at 09:14 Michael Mior <mm...@apache.org> wrote: >>>> >>>>> Eric, >>>>> >>>>> Could you give a more specific example of the failure scenario you're >>>>> experiencing? >>>>> >>>>> For a simple example of how limits can be pushed down, this is done in >>>>> the >>>>> Cassandra adapter with CassandraLimitRule. It matches an >>>>> EnumerableLimit on >>>>> top of a CassandraToEnumerableConverter and then converts that limit >>>>> to a >>>>> CassandraLimit which passes along the limit and offset information to >>>>> CassandraToEnumerableConverter for when the query is executed. The >>>>> EnumerableLimit is then replaced with a CassandraLimit effectively as a >>>>> placeholder to signal that the limit has been handled. >>>>> >>>>> -- >>>>> Michael Mior >>>>> mm...@apache.org >>>>> >>>>> >>>>> On Fri, Jun 21, 2024 at 8:44 AM Eric Berryman <eric.berry...@gmail.com >>>>> > >>>>> wrote: >>>>> >>>>> > Hello! >>>>> > >>>>> > When I add limit to my relbuilder object, the planner gives up. But >>>>> works >>>>> > fine without it. >>>>> > >>>>> > I wasn’t able to find any examples of using limit and pushing the >>>>> limit >>>>> > values down to a data source. >>>>> > >>>>> > Could someone help with some links on this subject? >>>>> > >>>>> > Thank you! >>>>> > Eric >>>>> > >>>>> >>>>
