risingwave_stream/from_proto/
project.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 multimap::MultiMap;
16use risingwave_common::util::iter_util::ZipEqFast;
17use risingwave_expr::expr::build_non_strict_from_prost;
18use risingwave_pb::stream_plan::ProjectNode;
19
20use super::*;
21use crate::executor::project::ProjectExecutor;
22
23pub struct ProjectExecutorBuilder;
24
25impl ExecutorBuilder for ProjectExecutorBuilder {
26    type Node = ProjectNode;
27
28    async fn new_boxed_executor(
29        params: ExecutorParams,
30        node: &Self::Node,
31        _store: impl StateStore,
32    ) -> StreamResult<Executor> {
33        let [input]: [_; 1] = params.input.try_into().unwrap();
34        let project_exprs: Vec<_> = node
35            .get_select_list()
36            .iter()
37            .map(|e| build_non_strict_from_prost(e, params.eval_error_report.clone()))
38            .try_collect()?;
39
40        let watermark_derivations = MultiMap::from_iter(
41            node.get_watermark_input_cols()
42                .iter()
43                .map(|idx| *idx as usize)
44                .zip_eq_fast(
45                    node.get_watermark_output_cols()
46                        .iter()
47                        .map(|idx| *idx as usize),
48                ),
49        );
50        let nondecreasing_expr_indices = node
51            .get_nondecreasing_exprs()
52            .iter()
53            .map(|idx| *idx as usize)
54            .collect();
55        let exec = ProjectExecutor::new(
56            params.actor_context,
57            input,
58            project_exprs,
59            watermark_derivations,
60            nondecreasing_expr_indices,
61            node.noop_update_hint,
62        );
63        Ok((params.info, exec).into())
64    }
65}
risingwave_stream/from_proto/project.rs

risingwave_stream/from_proto/
project.rs
