Enum opendal::Metakey

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pub enum Metakey {
    Complete,
    Mode,
    ContentDisposition,
    ContentLength,
    ContentMd5,
    ContentRange,
    ContentType,
    Etag,
    LastModified,
}
Expand description

Metakey describes the metadata keys that can be stored or queried.

For store

Internally, we will store a flag set of Metakey to check whether we have set some key already.

For query

At user side, we will allow user to query the metadata. If the meta has been stored, we will return directly. If no, we will call stat internally to fetch the metadata.

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Complete

The special metadata key that used to mark this entry already contains all metadata.

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Mode

Key for mode.

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ContentDisposition

Key for content disposition.

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ContentLength

Key for content length.

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ContentMd5

Key for content md5.

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ContentRange

Key for content range.

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ContentType

Key for content type.

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Etag

Key for etag.

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LastModified

Key for last last modified.

Trait Implementations§

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impl<R: Into<FlagSet<Metakey>>> BitAnd<R> for Metakey

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type Output = FlagSet<Metakey>

The resulting type after applying the & operator.
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fn bitand(self, rhs: R) -> Self::Output

Performs the & operation. Read more
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impl<R: Into<FlagSet<Metakey>>> BitOr<R> for Metakey

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type Output = FlagSet<Metakey>

The resulting type after applying the | operator.
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fn bitor(self, rhs: R) -> Self::Output

Performs the | operation. Read more
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impl<R: Into<FlagSet<Metakey>>> BitXor<R> for Metakey

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type Output = FlagSet<Metakey>

The resulting type after applying the ^ operator.
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fn bitxor(self, rhs: R) -> Self::Output

Performs the ^ operation. Read more
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impl Clone for Metakey

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fn clone(&self) -> Metakey

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 Metakey

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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 From<Metakey> for FlagSet<Metakey>

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fn from(value: Metakey) -> Self

Converts to this type from the input type.
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impl Not for Metakey

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type Output = FlagSet<Metakey>

The resulting type after applying the ! operator.
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fn not(self) -> Self::Output

Performs the unary ! operation. Read more
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impl PartialEq<Metakey> for Metakey

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

This method tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl<R: Into<FlagSet<Metakey>>> Rem<R> for Metakey

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type Output = FlagSet<Metakey>

The resulting type after applying the % operator.
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fn rem(self, rhs: R) -> Self::Output

Performs the % operation. Read more
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impl<R: Into<FlagSet<Metakey>>> Sub<R> for Metakey

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type Output = FlagSet<Metakey>

The resulting type after applying the - operator.
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fn sub(self, rhs: R) -> Self::Output

Performs the - operation. Read more
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impl Copy for Metakey

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impl Eq for Metakey

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impl StructuralEq for Metakey

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impl StructuralPartialEq for Metakey

Auto Trait Implementations§

Blanket Implementations§

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impl<T> Any for Twhere 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 Twhere T: ?Sized,

const: unstable · source§

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for Twhere 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> CompatExt for T

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fn compat(self) -> Compat<T>

Applies the Compat adapter by value. Read more
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fn compat_ref(&self) -> Compat<&T>

Applies the Compat adapter by shared reference. Read more
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fn compat_mut(&mut self) -> Compat<&mut T>

Applies the Compat adapter by mutable reference. Read more
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impl<Q, K> Equivalent<K> for Qwhere Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,

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fn equivalent(&self, key: &K) -> bool

Compare self to key and return true if they are equal.
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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> Instrument for T

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fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more
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fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current Span, returning an Instrumented wrapper. Read more
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impl<T, U> Into<U> for Twhere 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> Pointable for T

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const ALIGN: usize = mem::align_of::<T>()

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> Same<T> for T

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type Output = T

Should always be Self
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impl<T> ToOwned for Twhere 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 Twhere 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 Twhere 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 Twhere V: MultiLane<T>,

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fn vzip(self) -> V

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impl<T> WithSubscriber for T

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fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>where S: Into<Dispatch>,

Attaches the provided Subscriber to this type, returning a WithDispatch wrapper. Read more
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fn with_current_subscriber(self) -> WithDispatch<Self>

Attaches the current default Subscriber to this type, returning a WithDispatch wrapper. Read more