databend_common_ast/ast/statements/
connection.rs

1// Copyright 2021 Datafuse 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 std::collections::BTreeMap;
16use std::fmt::Display;
17use std::fmt::Formatter;
18
19use derive_visitor::Drive;
20use derive_visitor::DriveMut;
21
22use crate::ast::CreateOption;
23use crate::ast::Identifier;
24
25#[derive(Debug, Clone, PartialEq, Eq, Drive, DriveMut)]
26pub struct CreateConnectionStmt {
27    pub name: Identifier,
28    pub storage_type: String,
29    pub storage_params: BTreeMap<String, String>,
30    pub create_option: CreateOption,
31}
32
33#[derive(Debug, Clone, PartialEq, Eq, Drive, DriveMut)]
34pub struct DropConnectionStmt {
35    pub if_exists: bool,
36    pub name: Identifier,
37}
38
39impl Display for DropConnectionStmt {
40    fn fmt(&self, f: &mut Formatter) -> std::fmt::Result {
41        write!(f, "DROP CONNECTION ")?;
42        if self.if_exists {
43            write!(f, "IF EXISTS ")?;
44        }
45        write!(f, "{} ", self.name)
46    }
47}
48
49#[derive(Debug, Clone, PartialEq, Eq, Drive, DriveMut)]
50pub struct DescribeConnectionStmt {
51    pub name: Identifier,
52}
53
54impl Display for CreateConnectionStmt {
55    fn fmt(&self, f: &mut Formatter) -> std::fmt::Result {
56        write!(f, "CREATE")?;
57        if let CreateOption::CreateOrReplace = self.create_option {
58            write!(f, " OR REPLACE")?;
59        }
60        write!(f, " CONNECTION ")?;
61        if let CreateOption::CreateIfNotExists = self.create_option {
62            write!(f, "IF NOT EXISTS ")?;
63        }
64        write!(f, "{} ", self.name)?;
65        write!(f, "STORAGE_TYPE = '{}'", self.storage_type)?;
66        for (k, v) in &self.storage_params {
67            write!(f, " {k} = '{v}'")?;
68        }
69        Ok(())
70    }
71}
72
73impl Display for DescribeConnectionStmt {
74    fn fmt(&self, f: &mut Formatter) -> std::fmt::Result {
75        write!(f, "DESCRIBE CONNECTION {} ", self.name)
76    }
77}
78
79#[derive(Debug, Clone, PartialEq, Eq, Drive, DriveMut)]
80pub struct ShowConnectionsStmt {}
81
82impl Display for ShowConnectionsStmt {
83    fn fmt(&self, f: &mut Formatter) -> std::fmt::Result {
84        write!(f, "SHOW CONNECTIONS")
85    }
86}
databend_common_ast/ast/statements/connection.rs

databend_common_ast/ast/statements/
connection.rs
