datafusion_spark/
planner.rs

1// Licensed to the Apache Software Foundation (ASF) under one
2// or more contributor license agreements.  See the NOTICE file
3// distributed with this work for additional information
4// regarding copyright ownership.  The ASF licenses this file
5// to you under the Apache License, Version 2.0 (the
6// "License"); you may not use this file except in compliance
7// with the License.  You may obtain a copy of the License at
8//
9//   http://www.apache.org/licenses/LICENSE-2.0
10//
11// Unless required by applicable law or agreed to in writing,
12// software distributed under the License is distributed on an
13// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
14// KIND, either express or implied.  See the License for the
15// specific language governing permissions and limitations
16// under the License.
17
18use datafusion_expr::Expr;
19use datafusion_expr::expr::ScalarFunction;
20use datafusion_expr::planner::{ExprPlanner, PlannerResult};
21
22#[derive(Default, Debug)]
23pub struct SparkFunctionPlanner;
24
25impl ExprPlanner for SparkFunctionPlanner {
26    fn plan_extract(
27        &self,
28        args: Vec<Expr>,
29    ) -> datafusion_common::Result<PlannerResult<Vec<Expr>>> {
30        Ok(PlannerResult::Planned(Expr::ScalarFunction(
31            ScalarFunction::new_udf(crate::function::datetime::date_part(), args),
32        )))
33    }
34
35    fn plan_substring(
36        &self,
37        args: Vec<Expr>,
38    ) -> datafusion_common::Result<PlannerResult<Vec<Expr>>> {
39        Ok(PlannerResult::Planned(Expr::ScalarFunction(
40            ScalarFunction::new_udf(crate::function::string::substring(), args),
41        )))
42    }
43}
datafusion_spark/planner.rs

datafusion_spark/
planner.rs
