mysql/conn/
stmt.rs

1// Copyright (c) 2020 rust-mysql-simple contributors
2//
3// Licensed under the Apache License, Version 2.0
4// <LICENSE-APACHE or http://www.apache.org/licenses/LICENSE-2.0> or the MIT
5// license <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
6// option. All files in the project carrying such notice may not be copied,
7// modified, or distributed except according to those terms.
8
9use mysql_common::{io::ParseBuf, packets::StmtPacket, proto::MyDeserialize};
10
11use std::{borrow::Cow, io, sync::Arc};
12
13use crate::{prelude::*, Column, Result};
14
15#[derive(Debug, Clone, Eq, PartialEq)]
16pub struct InnerStmt {
17    columns: Option<Vec<Column>>,
18    params: Option<Vec<Column>>,
19    stmt_packet: StmtPacket,
20    connection_id: u32,
21}
22
23impl<'de> MyDeserialize<'de> for InnerStmt {
24    const SIZE: Option<usize> = StmtPacket::SIZE;
25    type Ctx = u32;
26
27    fn deserialize(connection_id: Self::Ctx, buf: &mut ParseBuf<'de>) -> io::Result<Self> {
28        let stmt_packet = buf.parse(())?;
29
30        Ok(InnerStmt {
31            columns: None,
32            params: None,
33            stmt_packet,
34            connection_id,
35        })
36    }
37}
38
39impl InnerStmt {
40    pub fn with_params(mut self, params: Option<Vec<Column>>) -> Self {
41        self.params = params;
42        self
43    }
44
45    pub fn with_columns(mut self, columns: Option<Vec<Column>>) -> Self {
46        self.columns = columns;
47        self
48    }
49
50    pub fn columns(&self) -> &[Column] {
51        self.columns.as_ref().map(AsRef::as_ref).unwrap_or(&[])
52    }
53
54    pub fn params(&self) -> &[Column] {
55        self.params.as_ref().map(AsRef::as_ref).unwrap_or(&[])
56    }
57
58    pub fn id(&self) -> u32 {
59        self.stmt_packet.statement_id()
60    }
61
62    pub const fn connection_id(&self) -> u32 {
63        self.connection_id
64    }
65
66    pub fn num_params(&self) -> u16 {
67        self.stmt_packet.num_params()
68    }
69
70    pub fn num_columns(&self) -> u16 {
71        self.stmt_packet.num_columns()
72    }
73}
74
75#[derive(Debug, Clone, Eq, PartialEq)]
76pub struct Statement {
77    pub(crate) inner: Arc<InnerStmt>,
78    pub(crate) named_params: Option<Vec<Vec<u8>>>,
79}
80
81impl Statement {
82    pub(crate) fn new(inner: Arc<InnerStmt>, named_params: Option<Vec<Vec<u8>>>) -> Self {
83        Self {
84            inner,
85            named_params,
86        }
87    }
88
89    pub fn columns(&self) -> &[Column] {
90        self.inner.columns()
91    }
92
93    pub fn params(&self) -> &[Column] {
94        self.inner.params()
95    }
96
97    pub fn id(&self) -> u32 {
98        self.inner.id()
99    }
100
101    pub fn connection_id(&self) -> u32 {
102        self.inner.connection_id()
103    }
104
105    pub fn num_params(&self) -> u16 {
106        self.inner.num_params()
107    }
108
109    pub fn num_columns(&self) -> u16 {
110        self.inner.num_columns()
111    }
112}
113
114impl AsStatement for Statement {
115    fn as_statement<Q: Queryable>(&self, _queryable: &mut Q) -> Result<Cow<'_, Statement>> {
116        Ok(Cow::Borrowed(self))
117    }
118}
119
120impl<'a> AsStatement for &'a Statement {
121    fn as_statement<Q: Queryable>(&self, _queryable: &mut Q) -> Result<Cow<'_, Statement>> {
122        Ok(Cow::Borrowed(self))
123    }
124}
125
126impl<T: AsRef<str>> AsStatement for T {
127    fn as_statement<Q: Queryable>(&self, queryable: &mut Q) -> Result<Cow<'static, Statement>> {
128        let statement = queryable.prep(self.as_ref())?;
129        Ok(Cow::Owned(statement))
130    }
131}
mysql/conn/stmt.rs

mysql/conn/
stmt.rs
