Hi,
Thanks a lot for your help
Best
Jocean.shi
Yuzhao Chen 于2019年3月16日周六 上午11:21写道：
> Hi, Jocean shi
>
> The convention is a kind of trait, and not decided by cost model and
> meratada. If you wanna output relNode with specified trait def, you should
> passed the trait defs to the program.
Hi, Jocean shi
The convention is a kind of trait, and not decided by cost model and meratada.
If you wanna output relNode with specified trait def, you should passed the
trait defs to the program. See [1].
[1]
Hi,
In other world. That question can convert to that if a RelNode has a
RelSet and the RelSet have two RelSubset then how to chose RelSubset
Best
Jocean.shi
Stamatis Zampetakis 于2019年3月13日周三 下午4:09写道：
> Hi Jocean,
>
> It is not very clear what is the problem you are trying to solve.
>
Yeah, did you replace the Convention trait of the matched node when matches ?
Best,
Danny Chan
在 2019年3月12日 +0800 PM8:59，Jocean shi ，写道：
> I sure this ConverterRule matches. In other world, this method has excuted.
> but the final result is only root RelNode has been replaced.
>
>
> Best
>
I sure this ConverterRule matches. In other world, this method has excuted.
but the final result is only root RelNode has been replaced.
Best
Jocean.shi
The ConverterRule is a RelOptRule but with default implementation of onMatch:
public void onMatch(RelOptRuleCall call) {
RelNode rel = call.rel(0);
if (rel.getTraitSet().contains(inTrait)) {
final RelNode converted = convert(rel);
if (converted != null) {
call.transformTo(converted);
I use Volcano. Is it cost that rule do not happen?
Best
Jocean.shi
Yuzhao Chen 于2019年3月12日周二 上午10:26写道：
> Then what kind of Planner you use, if it is Volcano it is not expected to
> happen.
>
> Best,
> Yuzhao Chen
> 在 2019年3月11日 +0800 PM11:08，Jocean shi ，写道：
> > Thanks for your help.
> > I get
Then what kind of Planner you use, if it is Volcano it is not expected to
happen.
Best,
Yuzhao Chen
在 2019年3月11日 +0800 PM11:08，Jocean shi ，写道：
> Thanks for your help.
> I get your point. But there are many other rules such as :
> private ElasticsearchFilterRule() {
> super(LogicalFilter.class,
Thanks for your help.
I get your point. But there are many other rules such as :
private ElasticsearchFilterRule() {
super(LogicalFilter.class, Convention.NONE, ElasticsearchRel.CONVENTION,
"ElasticsearchFilterRule");
}
will convert the Convention.NONE to ElasticsearchRel.CONVENTION.
The
Every ConverterRule will match kind of RelNode with special calling convention,
for ElasticsearchToEnumerableConverterRule, it is ElasticsearchRel.convention,
you can see it from the constructor:
private ElasticsearchToEnumerableConverterRule(
RelBuilderFactory relBuilderFactory) {
Hi All:
I have a question.
The ElasticsearchToEnumerableConverterRule is used to match
RelNode.class. I think this rule can convert all RelNode. but only convert
the root RelNode in fact. why?
Jocean.shi
Best wishes
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