NamedParams

Struct NamedParams 

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pub struct NamedParams { /* private fields */ }
Expand description

Named parameters for SQL queries

This struct holds named parameter bindings that can be used with the :name syntax in SQL queries.

§Examples

use stoolap::{Database, NamedParams, named_params};

let db = Database::open("memory://")?;
db.execute("CREATE TABLE users (id INTEGER, name TEXT)", ())?;

// Using the named_params! macro
db.execute_named(
    "INSERT INTO users VALUES (:id, :name)",
    named_params!{ id: 1, name: "Alice" }
)?;

// Building NamedParams manually
let params = NamedParams::new()
    .add("id", 2)
    .add("name", "Bob");
db.execute_named("INSERT INTO users VALUES (:id, :name)", params)?;

Implementations§

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impl NamedParams

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pub fn new() -> Self

Create empty named params

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pub fn add<T: ToParam>(self, name: impl Into<String>, value: T) -> Self

Add a named parameter (builder style)

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pub fn insert<T: ToParam>(&mut self, name: impl Into<String>, value: T)

Insert a named parameter

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pub fn into_inner(self) -> FxHashMap<String, Value>

Get the underlying FxHashMap

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pub fn as_map(&self) -> &FxHashMap<String, Value>

Get a reference to the underlying FxHashMap

Trait Implementations§

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impl Clone for NamedParams

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fn clone(&self) -> NamedParams

Returns a duplicate of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for NamedParams

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

Formats the value using the given formatter. Read more
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impl Default for NamedParams

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fn default() -> NamedParams

Returns the “default value” for a type. Read more
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impl From<HashMap<String, Value>> for NamedParams

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fn from(params: HashMap<String, Value>) -> Self

Converts to this type from the input type.

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

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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

Mutably borrows from an owned value. Read more
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impl<T> CloneToUninit for T
where T: Clone,

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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
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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

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fn into(self) -> U

Calls U::from(self).

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

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impl<T> IntoEither for T

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fn into_either(self, into_left: bool) -> Either<Self, Self>

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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impl<T> Pointable for T

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const ALIGN: usize

The alignment of pointer.
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type Init = T

The type for initializers.
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unsafe fn init(init: <T as Pointable>::Init) -> usize

Initializes a with the given initializer. Read more
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unsafe fn deref<'a>(ptr: usize) -> &'a T

Dereferences the given pointer. Read more
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unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

Mutably dereferences the given pointer. Read more
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unsafe fn drop(ptr: usize)

Drops the object pointed to by the given pointer. Read more
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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<V, T> VZip<V> for T
where V: MultiLane<T>,

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fn vzip(self) -> V