risingwave_stream/from_proto/
expand.rs

1// Copyright 2022 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 risingwave_pb::stream_plan::ExpandNode;
16
17use super::*;
18use crate::executor::ExpandExecutor;
19
20pub struct ExpandExecutorBuilder;
21
22impl_stream_node_body!(Expand(ExpandNode) => ExpandExecutorBuilder);
23
24impl ExecutorBuilder for ExpandExecutorBuilder {
25    type Node = ExpandNode;
26
27    async fn new_boxed_executor(
28        params: ExecutorParams,
29        node: &Self::Node,
30        _store: impl StateStore,
31    ) -> StreamResult<Executor> {
32        let [input]: [_; 1] = params.input.try_into().unwrap();
33        let column_subsets = node
34            .column_subsets
35            .iter()
36            .map(|subset| {
37                subset
38                    .column_indices
39                    .iter()
40                    .map(|idx| *idx as usize)
41                    .collect_vec()
42            })
43            .collect_vec();
44        Ok((params.info, ExpandExecutor::new(input, column_subsets)).into())
45    }
46}
risingwave_stream/from_proto/expand.rs

risingwave_stream/from_proto/
expand.rs
