risingwave_frontend/optimizer/rule/
apply_share_eliminate_rule.rs

1// Copyright 2025 RisingWave Labs
2//
3// Licensed under the Apache License, Version 2.0 (the "License");
4// you may not use this file except in compliance with the License.
5// You may obtain a copy of the License at
6//
7//     http://www.apache.org/licenses/LICENSE-2.0
8//
9// Unless required by applicable law or agreed to in writing, software
10// distributed under the License is distributed on an "AS IS" BASIS,
11// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12// See the License for the specific language governing permissions and
13// limitations under the License.
14
15use super::{BoxedRule, Rule};
16use crate::optimizer::PlanRef;
17use crate::optimizer::plan_node::{LogicalApply, LogicalShare, PlanTreeNodeUnary};
18
19/// Eliminate `LogicalShare` for `LogicalApply`.
20pub struct ApplyShareEliminateRule {}
21impl Rule for ApplyShareEliminateRule {
22    fn apply(&self, plan: PlanRef) -> Option<PlanRef> {
23        let apply: &LogicalApply = plan.as_logical_apply()?;
24        let (left, right, on, join_type, correlated_id, correlated_indices, max_one_row) =
25            apply.clone().decompose();
26
27        let share: &LogicalShare = right.as_logical_share()?;
28        // Eliminate the share operator
29        Some(LogicalApply::create(
30            left,
31            share.input(),
32            join_type,
33            on,
34            correlated_id,
35            correlated_indices,
36            max_one_row,
37        ))
38    }
39}
40
41impl ApplyShareEliminateRule {
42    pub fn create() -> BoxedRule {
43        Box::new(ApplyShareEliminateRule {})
44    }
45}

risingwave_frontend/optimizer/rule/apply_share_eliminate_rule.rs

risingwave_frontend/optimizer/rule/
apply_share_eliminate_rule.rs