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

A struct that can act as a PK filter

This structure works much like a pre-implemented closure for use in a filter function. It contains the hash of a value and uses that to check whether the fields match.

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impl PrimaryKeyFilter

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pub fn hash(&self) -> u32

Get the contained hash

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pub fn original(&self) -> &Field

Get the value used for exact comparison

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pub fn filter<C: Context>(&self, other: &Value<C>) -> bool
where Field: PartialEq<Value<C>>,

Check other against the filter

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pub fn integer(value: i32) -> Self

Create an integer PK hash

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pub fn bigint(value: i64) -> Self

Create an integer PK hash

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pub fn text(value: String) -> Self

Create a text PK hash

Trait Implementations§

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impl Clone for PrimaryKeyFilter

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fn clone(&self) -> PrimaryKeyFilter

Returns a copy 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 PrimaryKeyFilter

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

Formats the value using the given formatter. 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> 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> 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.