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use crate::{DynIden, Expr, IntoIden, SimpleExpr, Value};
#[derive(Debug, Clone, Default)]
pub struct OnConflict {
pub(crate) target: Option<OnConflictTarget>,
pub(crate) action: Option<OnConflictAction>,
}
/// Represents ON CONFLICT (upsert) targets
#[derive(Debug, Clone)]
pub enum OnConflictTarget {
/// A list of columns with unique constraint
ConflictColumns(Vec<DynIden>),
}
/// Represents ON CONFLICT (upsert) actions
#[derive(Debug, Clone)]
pub enum OnConflictAction {
/// Do nothing
DoNothing,
/// Update column value of existing row with inserting value
UpdateColumns(Vec<DynIden>),
/// Update column value of existing row with expression
UpdateExprs(Vec<(DynIden, SimpleExpr)>),
}
impl OnConflict {
/// Create a ON CONFLICT expression without target column,
/// a special method designed for MySQL
pub fn new() -> Self {
Default::default()
}
/// Set ON CONFLICT target column
pub fn column<C>(column: C) -> Self
where
C: IntoIden,
{
Self::columns(vec![column])
}
/// Set ON CONFLICT target columns
pub fn columns<I, C>(columns: I) -> Self
where
C: IntoIden,
I: IntoIterator<Item = C>,
{
Self {
target: Some(OnConflictTarget::ConflictColumns(
columns.into_iter().map(IntoIden::into_iden).collect(),
)),
action: None,
}
}
pub fn do_nothing(&mut self) -> &mut Self {
self.action = Some(OnConflictAction::DoNothing);
self
}
/// Set ON CONFLICT update column
pub fn update_column<C>(&mut self, column: C) -> &mut Self
where
C: IntoIden,
{
self.update_columns(vec![column])
}
/// Set ON CONFLICT update columns
///
/// # Examples
///
/// ```
/// use sea_query::{tests_cfg::*, *};
///
/// let query = Query::insert()
/// .into_table(Glyph::Table)
/// .columns(vec![Glyph::Aspect, Glyph::Image])
/// .values_panic(vec![
/// 2.into(),
/// 3.into(),
/// ])
/// .on_conflict(
/// OnConflict::column(Glyph::Id)
/// .update_columns([Glyph::Aspect, Glyph::Image])
/// .to_owned(),
/// )
/// .to_owned();
///
/// assert_eq!(
/// query.to_string(MysqlQueryBuilder),
/// r#"INSERT INTO `glyph` (`aspect`, `image`) VALUES (2, 3) ON DUPLICATE KEY UPDATE `aspect` = VALUES(`aspect`), `image` = VALUES(`image`)"#
/// );
/// assert_eq!(
/// query.to_string(PostgresQueryBuilder),
/// r#"INSERT INTO "glyph" ("aspect", "image") VALUES (2, 3) ON CONFLICT ("id") DO UPDATE SET "aspect" = "excluded"."aspect", "image" = "excluded"."image""#
/// );
/// assert_eq!(
/// query.to_string(SqliteQueryBuilder),
/// r#"INSERT INTO "glyph" ("aspect", "image") VALUES (2, 3) ON CONFLICT ("id") DO UPDATE SET "aspect" = "excluded"."aspect", "image" = "excluded"."image""#
/// );
/// ```
pub fn update_columns<C, I>(&mut self, columns: I) -> &mut Self
where
C: IntoIden,
I: IntoIterator<Item = C>,
{
self.action = Some(OnConflictAction::UpdateColumns(
columns.into_iter().map(IntoIden::into_iden).collect(),
));
self
}
/// Set ON CONFLICT update value
pub fn update_value<C>(&mut self, column_value: (C, Value)) -> &mut Self
where
C: IntoIden,
{
self.update_values(vec![column_value])
}
/// Set ON CONFLICT update values
///
/// # Examples
///
/// ```
/// use sea_query::{tests_cfg::*, *};
///
/// let query = Query::insert()
/// .into_table(Glyph::Table)
/// .columns(vec![Glyph::Aspect, Glyph::Image])
/// .values_panic(vec![
/// 2.into(),
/// 3.into(),
/// ])
/// .on_conflict(
/// OnConflict::column(Glyph::Id)
/// .update_values([
/// (Glyph::Aspect, "04108048005887010020060000204E0180400400".into()),
/// (Glyph::Image, 3.1415.into()),
/// ])
/// .to_owned()
/// )
/// .to_owned();
///
/// assert_eq!(
/// query.to_string(MysqlQueryBuilder),
/// r#"INSERT INTO `glyph` (`aspect`, `image`) VALUES (2, 3) ON DUPLICATE KEY UPDATE `aspect` = '04108048005887010020060000204E0180400400', `image` = 3.1415"#
/// );
/// assert_eq!(
/// query.to_string(PostgresQueryBuilder),
/// r#"INSERT INTO "glyph" ("aspect", "image") VALUES (2, 3) ON CONFLICT ("id") DO UPDATE SET "aspect" = '04108048005887010020060000204E0180400400', "image" = 3.1415"#
/// );
/// assert_eq!(
/// query.to_string(SqliteQueryBuilder),
/// r#"INSERT INTO "glyph" ("aspect", "image") VALUES (2, 3) ON CONFLICT ("id") DO UPDATE SET "aspect" = '04108048005887010020060000204E0180400400', "image" = 3.1415"#
/// );
/// ```
pub fn update_values<C, I>(&mut self, column_values: I) -> &mut Self
where
C: IntoIden,
I: IntoIterator<Item = (C, Value)>,
{
self.action = Some(OnConflictAction::UpdateExprs(
column_values
.into_iter()
.map(|(c, v)| (c.into_iden(), Expr::val(v).into()))
.collect(),
));
self
}
/// Set ON CONFLICT update expr
pub fn update_expr<C>(&mut self, column_expr: (C, SimpleExpr)) -> &mut Self
where
C: IntoIden,
{
self.update_exprs(vec![column_expr])
}
/// Set ON CONFLICT update exprs
///
/// # Examples
///
/// ```
/// use sea_query::{tests_cfg::*, *};
///
/// let query = Query::insert()
/// .into_table(Glyph::Table)
/// .columns(vec![Glyph::Aspect, Glyph::Image])
/// .values_panic(vec![
/// 2.into(),
/// 3.into(),
/// ])
/// .on_conflict(
/// OnConflict::column(Glyph::Id)
/// .update_expr((Glyph::Image, Expr::val(1).add(2)))
/// .to_owned()
/// )
/// .to_owned();
///
/// assert_eq!(
/// query.to_string(MysqlQueryBuilder),
/// r#"INSERT INTO `glyph` (`aspect`, `image`) VALUES (2, 3) ON DUPLICATE KEY UPDATE `image` = 1 + 2"#
/// );
/// assert_eq!(
/// query.to_string(PostgresQueryBuilder),
/// r#"INSERT INTO "glyph" ("aspect", "image") VALUES (2, 3) ON CONFLICT ("id") DO UPDATE SET "image" = 1 + 2"#
/// );
/// assert_eq!(
/// query.to_string(SqliteQueryBuilder),
/// r#"INSERT INTO "glyph" ("aspect", "image") VALUES (2, 3) ON CONFLICT ("id") DO UPDATE SET "image" = 1 + 2"#
/// );
/// ```
pub fn update_exprs<C, I>(&mut self, column_exprs: I) -> &mut Self
where
C: IntoIden,
I: IntoIterator<Item = (C, SimpleExpr)>,
{
self.action = Some(OnConflictAction::UpdateExprs(
column_exprs
.into_iter()
.map(|(c, e)| (c.into_iden(), e))
.collect(),
));
self
}
}