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use crate::{ConditionHolder, DynIden, IntoCondition, IntoIden, SimpleExpr};
#[derive(Debug, Clone, Default, PartialEq)]
pub struct OnConflict {
pub(crate) targets: Vec<OnConflictTarget>,
pub(crate) target_where: ConditionHolder,
pub(crate) action: Option<OnConflictAction>,
pub(crate) action_where: ConditionHolder,
}
/// Represents ON CONFLICT (upsert) targets
#[derive(Debug, Clone, PartialEq)]
pub enum OnConflictTarget {
/// A column
ConflictColumn(DynIden),
/// An expression `(LOWER(column), ...)`
ConflictExpr(SimpleExpr),
}
/// Represents ON CONFLICT (upsert) actions
#[derive(Debug, Clone, PartialEq)]
pub enum OnConflictAction {
/// Do nothing
DoNothing,
/// Update column value of existing row
Update(Vec<OnConflictUpdate>),
}
/// Represents strategies to update column in ON CONFLICT (upsert) actions
#[derive(Debug, Clone, PartialEq)]
pub enum OnConflictUpdate {
/// Update column value of existing row with inserting value
Column(DynIden),
/// Update column value of existing row with expression
Expr(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([column])
}
/// Set ON CONFLICT target columns
pub fn columns<I, C>(columns: I) -> Self
where
C: IntoIden,
I: IntoIterator<Item = C>,
{
Self {
targets: columns
.into_iter()
.map(|c| OnConflictTarget::ConflictColumn(c.into_iden()))
.collect(),
target_where: ConditionHolder::new(),
action: None,
action_where: ConditionHolder::new(),
}
}
/// Set ON CONFLICT target expression
///
/// # Examples
///
/// ```
/// use sea_query::{tests_cfg::*, *};
///
/// let query = Query::insert()
/// .into_table(Glyph::Table)
/// .columns([Glyph::Aspect, Glyph::Image])
/// .values_panic(["abcd".into(), 3.1415.into()])
/// .on_conflict(
/// OnConflict::new()
/// .expr(Expr::col(Glyph::Id))
/// .update_column(Glyph::Aspect)
/// .value(Glyph::Image, Expr::val(1).add(2))
/// .to_owned(),
/// )
/// .to_owned();
///
/// assert_eq!(
/// query.to_string(MysqlQueryBuilder),
/// [
/// r#"INSERT INTO `glyph` (`aspect`, `image`)"#,
/// r#"VALUES ('abcd', 3.1415)"#,
/// r#"ON DUPLICATE KEY UPDATE `aspect` = VALUES(`aspect`), `image` = 1 + 2"#,
/// ]
/// .join(" ")
/// );
/// assert_eq!(
/// query.to_string(PostgresQueryBuilder),
/// [
/// r#"INSERT INTO "glyph" ("aspect", "image")"#,
/// r#"VALUES ('abcd', 3.1415)"#,
/// r#"ON CONFLICT ("id") DO UPDATE SET "aspect" = "excluded"."aspect", "image" = 1 + 2"#,
/// ]
/// .join(" ")
/// );
/// assert_eq!(
/// query.to_string(SqliteQueryBuilder),
/// [
/// r#"INSERT INTO "glyph" ("aspect", "image")"#,
/// r#"VALUES ('abcd', 3.1415)"#,
/// r#"ON CONFLICT ("id") DO UPDATE SET "aspect" = "excluded"."aspect", "image" = 1 + 2"#,
/// ]
/// .join(" ")
/// );
/// ```
pub fn expr<T>(&mut self, expr: T) -> &mut Self
where
T: Into<SimpleExpr>,
{
Self::exprs(self, [expr])
}
/// Set multiple target expressions for ON CONFLICT. See [`OnConflict::expr`]
pub fn exprs<I, T>(&mut self, exprs: I) -> &mut Self
where
T: Into<SimpleExpr>,
I: IntoIterator<Item = T>,
{
self.targets.append(
&mut exprs
.into_iter()
.map(|e: T| OnConflictTarget::ConflictExpr(e.into()))
.collect(),
);
self
}
pub fn do_nothing(&mut self) -> &mut Self {
self.action = Some(OnConflictAction::DoNothing);
self
}
/// Set ON CONFLICT update column
///
/// # Examples
///
/// ```
/// use sea_query::{tests_cfg::*, *};
///
/// let query = Query::insert()
/// .into_table(Glyph::Table)
/// .columns([Glyph::Aspect, Glyph::Image])
/// .values_panic([
/// "abcd".into(),
/// 3.1415.into(),
/// ])
/// .on_conflict(
/// OnConflict::columns([Glyph::Id, Glyph::Aspect])
/// .update_column(Glyph::Aspect)
/// .value(Glyph::Image, Expr::val(1).add(2))
/// .to_owned()
/// )
/// .to_owned();
///
/// assert_eq!(
/// query.to_string(MysqlQueryBuilder),
/// [
/// r#"INSERT INTO `glyph` (`aspect`, `image`)"#,
/// r#"VALUES ('abcd', 3.1415)"#,
/// r#"ON DUPLICATE KEY UPDATE `aspect` = VALUES(`aspect`), `image` = 1 + 2"#,
/// ]
/// .join(" ")
/// );
/// assert_eq!(
/// query.to_string(PostgresQueryBuilder),
/// [
/// r#"INSERT INTO "glyph" ("aspect", "image")"#,
/// r#"VALUES ('abcd', 3.1415)"#,
/// r#"ON CONFLICT ("id", "aspect") DO UPDATE SET "aspect" = "excluded"."aspect", "image" = 1 + 2"#,
/// ]
/// .join(" ")
/// );
/// assert_eq!(
/// query.to_string(SqliteQueryBuilder),
/// [
/// r#"INSERT INTO "glyph" ("aspect", "image")"#,
/// r#"VALUES ('abcd', 3.1415)"#,
/// r#"ON CONFLICT ("id", "aspect") DO UPDATE SET "aspect" = "excluded"."aspect", "image" = 1 + 2"#,
/// ]
/// .join(" ")
/// );
/// ```
pub fn update_column<C>(&mut self, column: C) -> &mut Self
where
C: IntoIden,
{
self.update_columns([column])
}
/// Set ON CONFLICT update columns
///
/// # Examples
///
/// ```
/// use sea_query::{tests_cfg::*, *};
///
/// let query = Query::insert()
/// .into_table(Glyph::Table)
/// .columns([Glyph::Aspect, Glyph::Image])
/// .values_panic([
/// 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>,
{
let mut update_strats: Vec<OnConflictUpdate> = columns
.into_iter()
.map(|x| OnConflictUpdate::Column(IntoIden::into_iden(x)))
.collect();
match &mut self.action {
Some(OnConflictAction::Update(v)) => {
v.append(&mut update_strats);
}
Some(OnConflictAction::DoNothing) | None => {
self.action = Some(OnConflictAction::Update(update_strats));
}
};
self
}
/// Set ON CONFLICT update exprs
///
/// # Examples
///
/// ```
/// use sea_query::{tests_cfg::*, *};
///
/// let query = Query::insert()
/// .into_table(Glyph::Table)
/// .columns([Glyph::Aspect, Glyph::Image])
/// .values_panic([
/// 2.into(),
/// 3.into(),
/// ])
/// .on_conflict(
/// OnConflict::column(Glyph::Id)
/// .value(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 values<C, I>(&mut self, values: I) -> &mut Self
where
C: IntoIden,
I: IntoIterator<Item = (C, SimpleExpr)>,
{
let mut update_exprs: Vec<OnConflictUpdate> = values
.into_iter()
.map(|(c, e)| OnConflictUpdate::Expr(c.into_iden(), e))
.collect();
match &mut self.action {
Some(OnConflictAction::Update(v)) => {
v.append(&mut update_exprs);
}
Some(OnConflictAction::DoNothing) | None => {
self.action = Some(OnConflictAction::Update(update_exprs));
}
};
self
}
/// Set ON CONFLICT update value
pub fn value<C, T>(&mut self, col: C, value: T) -> &mut Self
where
C: IntoIden,
T: Into<SimpleExpr>,
{
self.values([(col, value.into())])
}
/// Set target WHERE
///
/// # Examples
///
/// ```
/// use sea_query::{tests_cfg::*, *};
///
/// let query = Query::insert()
/// .into_table(Glyph::Table)
/// .columns([Glyph::Aspect, Glyph::Image])
/// .values_panic([
/// 2.into(),
/// 3.into(),
/// ])
/// .on_conflict(
/// OnConflict::column(Glyph::Id)
/// .value(Glyph::Image, Expr::val(1).add(2))
/// .target_and_where(Expr::col((Glyph::Table, Glyph::Aspect)).is_null())
/// .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") WHERE "glyph"."aspect" IS NULL DO UPDATE SET "image" = 1 + 2"#
/// );
/// assert_eq!(
/// query.to_string(SqliteQueryBuilder),
/// r#"INSERT INTO "glyph" ("aspect", "image") VALUES (2, 3) ON CONFLICT ("id") WHERE "glyph"."aspect" IS NULL DO UPDATE SET "image" = 1 + 2"#
/// );
/// ```
pub fn target_and_where(&mut self, other: SimpleExpr) -> &mut Self {
self.target_cond_where(other)
}
/// Set target WHERE
pub fn target_and_where_option(&mut self, other: Option<SimpleExpr>) -> &mut Self {
if let Some(other) = other {
self.target_cond_where(other);
}
self
}
/// Set target WHERE
pub fn target_cond_where<C>(&mut self, condition: C) -> &mut Self
where
C: IntoCondition,
{
self.target_where.add_condition(condition.into_condition());
self
}
/// Set action WHERE
///
/// # Examples
///
/// ```
/// use sea_query::{tests_cfg::*, *};
///
/// let query = Query::insert()
/// .into_table(Glyph::Table)
/// .columns([Glyph::Aspect, Glyph::Image])
/// .values_panic([
/// 2.into(),
/// 3.into(),
/// ])
/// .on_conflict(
/// OnConflict::column(Glyph::Id)
/// .value(Glyph::Image, Expr::val(1).add(2))
/// .action_and_where(Expr::col((Glyph::Table, Glyph::Aspect)).is_null())
/// .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 WHERE "glyph"."aspect" IS NULL"#
/// );
/// assert_eq!(
/// query.to_string(SqliteQueryBuilder),
/// r#"INSERT INTO "glyph" ("aspect", "image") VALUES (2, 3) ON CONFLICT ("id") DO UPDATE SET "image" = 1 + 2 WHERE "glyph"."aspect" IS NULL"#
/// );
/// ```
pub fn action_and_where(&mut self, other: SimpleExpr) -> &mut Self {
self.action_cond_where(other)
}
/// Set action WHERE
pub fn action_and_where_option(&mut self, other: Option<SimpleExpr>) -> &mut Self {
if let Some(other) = other {
self.action_cond_where(other);
}
self
}
/// Set action WHERE
pub fn action_cond_where<C>(&mut self, condition: C) -> &mut Self
where
C: IntoCondition,
{
self.action_where.add_condition(condition.into_condition());
self
}
}