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SqliteParamsBuf

Struct SqliteParamsBuf 

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

Reusable SQLite parameter buffer for hot prepared-statement loops.

Callers can allocate once, mutate values in place with the set_* methods, and pass the buffer to SqlitePreparedStatement::*_params methods without rebuilding driver values from RowValues on every iteration.

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impl SqliteParamsBuf

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pub fn with_capacity(capacity: usize) -> Self

Create an empty buffer with room for capacity parameters.

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pub fn clear(&mut self)

Remove all values while keeping allocated capacity.

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pub fn len(&self) -> usize

Number of parameters currently in the buffer.

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pub fn is_empty(&self) -> bool

Whether the buffer has no parameters.

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pub fn as_values(&self) -> &[Value]

Borrow the driver-native values.

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pub fn set_int(&mut self, index: usize, value: i64)

Set an integer parameter at zero-based index.

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pub fn set_float(&mut self, index: usize, value: f64)

Set a floating-point parameter at zero-based index.

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pub fn set_text(&mut self, index: usize, value: impl Into<String>)

Set a text parameter at zero-based index.

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pub fn set_bool(&mut self, index: usize, value: bool)

Set a boolean parameter at zero-based index.

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pub fn set_timestamp(&mut self, index: usize, value: NaiveDateTime)

Set a timestamp parameter at zero-based index.

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pub fn set_json(&mut self, index: usize, value: Value)

Set a JSON parameter at zero-based index.

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pub fn set_blob(&mut self, index: usize, value: impl Into<Vec<u8>>)

Set a blob parameter at zero-based index.

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pub fn set_null(&mut self, index: usize)

Set a NULL parameter at zero-based index.

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impl Clone for SqliteParamsBuf

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fn clone(&self) -> SqliteParamsBuf

Returns a duplicate of the value. Read more
1.0.0 (const: unstable) · Source§

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

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

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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 SqliteParamsBuf

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fn default() -> SqliteParamsBuf

Returns the “default value” for a type. Read more

Auto Trait Implementations§

Blanket Implementations§

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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> Same for T

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type Output = T

Should always be Self
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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.