risingwave_frontend/optimizer/plan_node/generic/
mysql_query.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 educe::Educe;
16use risingwave_common::catalog::{ColumnDesc, ColumnId, Schema};
17
18use super::GenericPlanNode;
19use crate::optimizer::optimizer_context::OptimizerContextRef;
20use crate::optimizer::property::FunctionalDependencySet;
21
22#[derive(Debug, Clone, Educe)]
23#[educe(PartialEq, Eq, Hash)]
24pub struct MySqlQuery {
25    pub schema: Schema,
26    pub hostname: String,
27    pub port: String,
28    pub username: String,
29    pub password: String,
30    pub database: String,
31    pub query: String,
32
33    #[educe(PartialEq(ignore))]
34    #[educe(Hash(ignore))]
35    pub ctx: OptimizerContextRef,
36}
37
38impl GenericPlanNode for MySqlQuery {
39    fn schema(&self) -> Schema {
40        self.schema.clone()
41    }
42
43    fn stream_key(&self) -> Option<Vec<usize>> {
44        None
45    }
46
47    fn ctx(&self) -> OptimizerContextRef {
48        self.ctx.clone()
49    }
50
51    fn functional_dependency(&self) -> FunctionalDependencySet {
52        FunctionalDependencySet::new(self.schema.len())
53    }
54}
55
56impl MySqlQuery {
57    pub fn columns(&self) -> Vec<ColumnDesc> {
58        self.schema
59            .fields
60            .iter()
61            .enumerate()
62            .map(|(i, f)| {
63                ColumnDesc::named(f.name.clone(), ColumnId::new(i as i32), f.data_type.clone())
64            })
65            .collect()
66    }
67}
risingwave_frontend/optimizer/plan_node/generic/mysql_query.rs

risingwave_frontend/optimizer/plan_node/generic/
mysql_query.rs
