sqlx_core/any/
statement.rs

1use crate::any::{Any, AnyArguments, AnyColumn, AnyTypeInfo};
2use crate::column::ColumnIndex;
3use crate::database::Database;
4use crate::error::Error;
5use crate::ext::ustr::UStr;
6use crate::statement::Statement;
7use crate::HashMap;
8use either::Either;
9use std::borrow::Cow;
10use std::sync::Arc;
11
12pub struct AnyStatement<'q> {
13    #[doc(hidden)]
14    pub sql: Cow<'q, str>,
15    #[doc(hidden)]
16    pub parameters: Option<Either<Vec<AnyTypeInfo>, usize>>,
17    #[doc(hidden)]
18    pub column_names: Arc<HashMap<UStr, usize>>,
19    #[doc(hidden)]
20    pub columns: Vec<AnyColumn>,
21}
22
23impl<'q> Statement<'q> for AnyStatement<'q> {
24    type Database = Any;
25
26    fn to_owned(&self) -> AnyStatement<'static> {
27        AnyStatement::<'static> {
28            sql: Cow::Owned(self.sql.clone().into_owned()),
29            column_names: self.column_names.clone(),
30            parameters: self.parameters.clone(),
31            columns: self.columns.clone(),
32        }
33    }
34
35    fn sql(&self) -> &str {
36        &self.sql
37    }
38
39    fn parameters(&self) -> Option<Either<&[AnyTypeInfo], usize>> {
40        match &self.parameters {
41            Some(Either::Left(types)) => Some(Either::Left(types)),
42            Some(Either::Right(count)) => Some(Either::Right(*count)),
43            None => None,
44        }
45    }
46
47    fn columns(&self) -> &[AnyColumn] {
48        &self.columns
49    }
50
51    impl_statement_query!(AnyArguments<'_>);
52}
53
54impl<'i> ColumnIndex<AnyStatement<'_>> for &'i str {
55    fn index(&self, statement: &AnyStatement<'_>) -> Result<usize, Error> {
56        statement
57            .column_names
58            .get(*self)
59            .ok_or_else(|| Error::ColumnNotFound((*self).into()))
60            .copied()
61    }
62}
63
64impl<'q> AnyStatement<'q> {
65    #[doc(hidden)]
66    pub fn try_from_statement<S>(
67        query: &'q str,
68        statement: &S,
69        column_names: Arc<HashMap<UStr, usize>>,
70    ) -> crate::Result<Self>
71    where
72        S: Statement<'q>,
73        AnyTypeInfo: for<'a> TryFrom<&'a <S::Database as Database>::TypeInfo, Error = Error>,
74        AnyColumn: for<'a> TryFrom<&'a <S::Database as Database>::Column, Error = Error>,
75    {
76        let parameters = match statement.parameters() {
77            Some(Either::Left(parameters)) => Some(Either::Left(
78                parameters
79                    .iter()
80                    .map(AnyTypeInfo::try_from)
81                    .collect::<Result<Vec<_>, _>>()?,
82            )),
83            Some(Either::Right(count)) => Some(Either::Right(count)),
84            None => None,
85        };
86
87        let columns = statement
88            .columns()
89            .iter()
90            .map(AnyColumn::try_from)
91            .collect::<Result<Vec<_>, _>>()?;
92
93        Ok(Self {
94            sql: query.into(),
95            columns,
96            column_names,
97            parameters,
98        })
99    }
100}
sqlx_core/any/statement.rs

sqlx_core/any/
statement.rs
