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DelimitedFile

Struct DelimitedFile 

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pub struct DelimitedFile<'a> {
    pub path_literal: &'a str,
    pub directory_literal: &'a str,
    pub name: &'a str,
    pub columns: &'a [String],
}
Expand description

One delimited source file, in every spelling an engine’s file relation may ask for it in — what SqlRenderer::delimited_file_relation_for is handed.

One struct rather than four arguments, because a slot that grows an argument is a slot every dialect has to be recompiled for; one that grows a field is not. Each is composed once, by the caller that knows the answer, so no dialect has to take a path apart to find a file name in it.

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§path_literal: &'a str

The whole path to the file, already a single-quoted SQL string literal and already escaped. Put it where the relation takes a path, and do not quote it again.

§directory_literal: &'a str

The directory the file sits in, already a single-quoted SQL string literal — for an engine that resolves a file name against a directory rather than opening a path.

§name: &'a str

The file’s own name inside that directory, bare: no quotes and no path in front of it.

§columns: &'a [String]

The file’s columns, in the order the file writes them, spelled exactly as its header row spells them and with no quoting applied.

Empty where the caller measured no header — a bundle assembled by hand. An engine that cannot read a file without its columns declared answers None to an empty list rather than guessing at one.

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impl<'a> Clone for DelimitedFile<'a>

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fn clone(&self) -> Self

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<'a> Copy for DelimitedFile<'a>

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impl<'a> Debug for DelimitedFile<'a>

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

Formats the value using the given formatter. Read more

Auto Trait Implementations§

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impl<'a> Freeze for DelimitedFile<'a>

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impl<'a> RefUnwindSafe for DelimitedFile<'a>

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impl<'a> Send for DelimitedFile<'a>

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impl<'a> Sync for DelimitedFile<'a>

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impl<'a> Unpin for DelimitedFile<'a>

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impl<'a> UnsafeUnpin for DelimitedFile<'a>

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impl<'a> UnwindSafe for DelimitedFile<'a>

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> 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 = !

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

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.