sea_query::value

Enum Value

pub enum Value {
Show 14 variants
    Bool(Option<bool>),
    TinyInt(Option<i8>),
    SmallInt(Option<i16>),
    Int(Option<i32>),
    BigInt(Option<i64>),
    TinyUnsigned(Option<u8>),
    SmallUnsigned(Option<u16>),
    Unsigned(Option<u32>),
    BigUnsigned(Option<u64>),
    Float(Option<f32>),
    Double(Option<f64>),
    String(Option<String>),
    Char(Option<char>),
    Bytes(Option<Vec<u8>>),
}

Expand description

Value variants

We want the inner Value to be exactly 1 pointer sized, so anything larger should be boxed.

If the hashable-value feature is enabled, NaN == NaN, which contradicts Rust’s built-in implementation of NaN != NaN.

Variants§

Bool(Option<bool>)

TinyInt(Option<i8>)

SmallInt(Option<i16>)

Int(Option<i32>)

BigInt(Option<i64>)

TinyUnsigned(Option<u8>)

SmallUnsigned(Option<u16>)

Unsigned(Option<u32>)

BigUnsigned(Option<u64>)

Float(Option<f32>)

Double(Option<f64>)

String(Option<String>)

Char(Option<char>)

Bytes(Option<Vec<u8>>)

Implementations§

impl Value

pub fn unwrap<T>(self) -> T
where T: ValueType,

pub fn expect<T>(self, msg: &str) -> T
where T: ValueType,

pub fn as_null(&self) -> Self

Get the null variant of self

use sea_query::Value;

let v = Value::Int(Some(2));
let n = v.as_null();

assert_eq!(n, Value::Int(None));

// one liner:
assert_eq!(Into::<Value>::into(2.2).as_null(), Value::Double(None));

pub fn dummy_value(&self) -> Self

Get a default value of self’s type

use sea_query::Value;

let v = Value::Int(None);
let n = v.dummy_value();
assert_eq!(n, Value::Int(Some(0)));

Trait Implementations§

impl Clone for Value

fn clone(&self) -> Value

Returns a duplicate of the value. Read more

1.0.0 · Source§

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more

impl Debug for Value

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more

impl Display for Value

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more

impl From<&[u8]> for Value

fn from(x: &[u8]) -> Value

Converts to this type from the input type.

impl From<&String> for Value

fn from(x: &String) -> Value

Converts to this type from the input type.

impl From<&str> for Value

fn from(x: &str) -> Value

Converts to this type from the input type.

impl From<Cow<'_, str>> for Value

fn from(x: Cow<'_, str>) -> Value

Converts to this type from the input type.

impl<T> From<Option<T>> for Value
where T: Into<Value> + Nullable,

fn from(x: Option<T>) -> Value

Converts to this type from the input type.

impl From<String> for Value

fn from(x: String) -> Value

Converts to this type from the input type.

impl From<Vec<u8>> for Value

fn from(x: Vec<u8>) -> Value

Converts to this type from the input type.

impl From<bool> for Value

fn from(x: bool) -> Value

Converts to this type from the input type.

impl From<char> for Value

fn from(x: char) -> Value

Converts to this type from the input type.

impl From<f32> for Value

fn from(x: f32) -> Value

Converts to this type from the input type.

impl From<f64> for Value

fn from(x: f64) -> Value

Converts to this type from the input type.

impl From<i16> for Value

fn from(x: i16) -> Value

Converts to this type from the input type.

impl From<i32> for Value

fn from(x: i32) -> Value

Converts to this type from the input type.

impl From<i64> for Value

fn from(x: i64) -> Value

Converts to this type from the input type.

impl From<i8> for Value

fn from(x: i8) -> Value

Converts to this type from the input type.

impl From<u16> for Value

fn from(x: u16) -> Value

Converts to this type from the input type.

impl From<u32> for Value

fn from(x: u32) -> Value

Converts to this type from the input type.

impl From<u64> for Value

fn from(x: u64) -> Value

Converts to this type from the input type.

impl From<u8> for Value

fn from(x: u8) -> Value

Converts to this type from the input type.

impl PartialEq for Value

fn eq(&self, other: &Value) -> bool

Tests for self and other values to be equal, and is used by ==.

1.0.0 · Source§

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl StructuralPartialEq for Value

Auto Trait Implementations§

impl Freeze for Value

impl RefUnwindSafe for Value

impl Send for Value

impl Sync for Value

impl Unpin for Value

impl UnwindSafe for Value

Blanket Implementations§

impl<T> Any for T
where T: 'static + ?Sized,

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

impl<T> Borrow<T> for T
where T: ?Sized,

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

impl<T> BorrowMut<T> for T
where T: ?Sized,

fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more

impl<T> CloneToUninit for T
where T: Clone,

unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)

Performs copy-assignment from self to dest. Read more

impl<T> ExprTrait for T
where T: Into<Expr>,

fn as_enum<N>(self, type_name: N) -> Expr
where N: IntoIden,

Express a AS enum expression. Read more

fn binary<O, R>(self, op: O, right: R) -> Expr
where O: Into<BinOper>, R: Into<Expr>,

Create any binary operation Read more

fn cast_as<N>(self, type_name: N) -> Expr
where N: IntoIden,

Express a CAST AS expression. Read more

fn unary(self, op: UnOper) -> Expr

Apply any unary operator to the expression. Read more

fn add<R>(self, right: R) -> Expr
where R: Into<Expr>,

Express an arithmetic addition operation. Read more

fn and<R>(self, right: R) -> Expr
where R: Into<Expr>,

Express a logical AND operation. Read more

fn between<A, B>(self, a: A, b: B) -> Expr
where A: Into<Expr>, B: Into<Expr>,

Express a BETWEEN expression. Read more

fn div<R>(self, right: R) -> Expr
where R: Into<Expr>,

Express an arithmetic division operation. Read more

fn eq<R>(self, right: R) -> Expr
where R: Into<Expr>,

Express an equal (=) expression. Read more

fn equals<C>(self, col: C) -> Expr
where C: IntoColumnRef,

Express a equal expression between two table columns, you will mainly use this to relate identical value between two table columns. Read more

fn gt<R>(self, right: R) -> Expr
where R: Into<Expr>,

Express a greater than (>) expression. Read more

fn gte<R>(self, right: R) -> Expr
where R: Into<Expr>,

Express a greater than or equal (>=) expression. Read more

fn in_subquery(self, sel: SelectStatement) -> Expr

Express a IN sub-query expression. Read more

fn in_tuples<V, I>(self, v: I) -> Expr
where V: IntoValueTuple, I: IntoIterator<Item = V>,

Express a IN sub expression. Read more

fn is<R>(self, right: R) -> Expr
where R: Into<Expr>,

Express a IS expression. Read more

fn is_in<V, I>(self, v: I) -> Expr
where V: Into<Expr>, I: IntoIterator<Item = V>,

Express a IN expression. Read more

fn is_not<R>(self, right: R) -> Expr
where R: Into<Expr>,

Express a IS NOT expression. Read more

fn is_not_in<V, I>(self, v: I) -> Expr
where V: Into<Expr>, I: IntoIterator<Item = V>,

Express a NOT IN expression. Read more

fn is_not_null(self) -> Expr

Express a IS NOT NULL expression. Read more

fn is_null(self) -> Expr

Express a IS NULL expression. Read more

fn left_shift<R>(self, right: R) -> Expr
where R: Into<Expr>,

Express a bitwise left shift. Read more

fn like<L>(self, like: L) -> Expr
where L: IntoLikeExpr,

Express a LIKE expression. Read more

fn lt<R>(self, right: R) -> Expr
where R: Into<Expr>,

Express a less than (<) expression. Read more

fn lte<R>(self, right: R) -> Expr
where R: Into<Expr>,

Express a less than or equal (<=) expression. Read more

fn modulo<R>(self, right: R) -> Expr
where R: Into<Expr>,

Express an arithmetic modulo operation. Read more

fn mul<R>(self, right: R) -> Expr
where R: Into<Expr>,

Express an arithmetic multiplication operation. Read more

fn ne<R>(self, right: R) -> Expr
where R: Into<Expr>,

Express a not equal (<>) expression. Read more

fn not(self) -> Expr

Negates an expression with NOT. Read more

fn not_between<A, B>(self, a: A, b: B) -> Expr
where A: Into<Expr>, B: Into<Expr>,

Express a NOT BETWEEN expression. Read more

fn not_equals<C>(self, col: C) -> Expr
where C: IntoColumnRef,

Express a not equal expression between two table columns, you will mainly use this to relate identical value between two table columns. Read more

fn not_in_subquery(self, sel: SelectStatement) -> Expr

Express a NOT IN sub-query expression. Read more

fn not_like<L>(self, like: L) -> Expr
where L: IntoLikeExpr,

Express a NOT LIKE expression. Read more

fn or<R>(self, right: R) -> Expr
where R: Into<Expr>,

Express a logical OR operation. Read more

fn right_shift<R>(self, right: R) -> Expr
where R: Into<Expr>,

Express a bitwise right shift. Read more

fn sub<R>(self, right: R) -> Expr
where R: Into<Expr>,

Express an arithmetic subtraction operation. Read more

fn bit_and<R>(self, right: R) -> Expr
where R: Into<Expr>,

Express a bitwise AND operation. Read more

fn bit_or<R>(self, right: R) -> Expr
where R: Into<Expr>,

Express a bitwise OR operation. Read more

impl<T> From<T> for T

fn from(t: T) -> T

Returns the argument unchanged.

impl<T, U> Into<U> for T
where U: From<T>,

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

impl<T> IntoValueTuple for T
where T: Into<ValueTuple>,

fn into_value_tuple(self) -> ValueTuple

impl<T> SqliteExpr for T
where T: ExprTrait,

fn glob<T>(self, right: T) -> Expr
where T: Into<Expr>,

Express an sqlite GLOB operator. Read more

fn matches<T>(self, right: T) -> Expr
where T: Into<Expr>,

Express an sqlite MATCH operator. Read more

fn get_json_field<T>(self, right: T) -> Expr
where T: Into<Expr>,

Express an sqlite retrieves JSON field as JSON value (->). Read more

fn cast_json_field<T>(self, right: T) -> Expr
where T: Into<Expr>,

Express an sqlite retrieves JSON field and casts it to an appropriate SQL type (->>). Read more

impl<T> ToOwned for T
where T: Clone,

type Owned = T

The resulting type after obtaining ownership.

fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more

fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more

impl<T> ToString for T
where T: Display + ?Sized,

fn to_string(&self) -> String

Converts the given value to a String. Read more

impl<T, U> TryFrom<U> for T
where U: Into<T>,

type Error = Infallible

The type returned in the event of a conversion error.

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.

impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.