datafusion_cli/pool_type.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
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8//
9// http://www.apache.org/licenses/LICENSE-2.0
10//
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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 std::{
19 fmt::{self, Display, Formatter},
20 str::FromStr,
21};
22
23#[derive(PartialEq, Debug, Clone)]
24pub enum PoolType {
25 Greedy,
26 Fair,
27}
28
29impl FromStr for PoolType {
30 type Err = String;
31
32 fn from_str(s: &str) -> Result<Self, Self::Err> {
33 match s {
34 "Greedy" | "greedy" => Ok(PoolType::Greedy),
35 "Fair" | "fair" => Ok(PoolType::Fair),
36 _ => Err(format!("Invalid memory pool type '{}'", s)),
37 }
38 }
39}
40
41impl Display for PoolType {
42 fn fmt(&self, f: &mut Formatter) -> fmt::Result {
43 match self {
44 PoolType::Greedy => write!(f, "greedy"),
45 PoolType::Fair => write!(f, "fair"),
46 }
47 }
48}