arrow_ipc::gen::Schema

Struct MetadataVersion

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#[repr(transparent)]
pub struct MetadataVersion(pub i16);

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§0: i16

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impl MetadataVersion

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pub const V1: Self = _

0.1.0 (October 2016).

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pub const V2: Self = _

0.2.0 (February 2017). Non-backwards compatible with V1.

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pub const V3: Self = _

0.3.0 -> 0.7.1 (May - December 2017). Non-backwards compatible with V2.

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pub const V4: Self = _

= 0.8.0 (December 2017). Non-backwards compatible with V3.

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pub const V5: Self = _

= 1.0.0 (July 2020). Backwards compatible with V4 (V5 readers can read V4 metadata and IPC messages). Implementations are recommended to provide a V4 compatibility mode with V5 format changes disabled.

Incompatible changes between V4 and V5:

  • Union buffer layout has changed. In V5, Unions don’t have a validity bitmap buffer.
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pub const ENUM_MIN: i16 = 0i16

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pub const ENUM_MAX: i16 = 4i16

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pub const ENUM_VALUES: &'static [Self] = _

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pub fn variant_name(self) -> Option<&'static str>

Returns the variant’s name or “” if unknown.

Trait Implementations§

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impl Clone for MetadataVersion

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fn clone(&self) -> MetadataVersion

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 MetadataVersion

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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 MetadataVersion

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fn default() -> MetadataVersion

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

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impl<'a> Follow<'a> for MetadataVersion

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type Inner = MetadataVersion

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unsafe fn follow(buf: &'a [u8], loc: usize) -> Self::Inner

Safety Read more
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impl Hash for MetadataVersion

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fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher. Read more
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fn hash_slice<H>(data: &[Self], state: &mut H)
where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher. Read more
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impl Ord for MetadataVersion

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fn cmp(&self, other: &MetadataVersion) -> Ordering

This method returns an Ordering between self and other. Read more
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fn max(self, other: Self) -> Self
where Self: Sized,

Compares and returns the maximum of two values. Read more
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fn min(self, other: Self) -> Self
where Self: Sized,

Compares and returns the minimum of two values. Read more
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fn clamp(self, min: Self, max: Self) -> Self
where Self: Sized,

Restrict a value to a certain interval. Read more
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impl PartialEq for MetadataVersion

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

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl PartialOrd for MetadataVersion

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fn partial_cmp(&self, other: &MetadataVersion) -> Option<Ordering>

This method returns an ordering between self and other values if one exists. Read more
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fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator. Read more
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fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator. Read more
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fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator. Read more
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fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator. Read more
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impl Push for MetadataVersion

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type Output = MetadataVersion

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unsafe fn push(&self, dst: &mut [u8], _written_len: usize)

Safety Read more
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fn size() -> usize

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fn alignment() -> PushAlignment

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impl<'a> Verifiable for MetadataVersion

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fn run_verifier( v: &mut Verifier<'_, '_>, pos: usize, ) -> Result<(), InvalidFlatbuffer>

Runs the verifier for this type, assuming its at position pos in the verifier’s buffer. Should not need to be called directly.
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impl Copy for MetadataVersion

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impl Eq for MetadataVersion

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impl SimpleToVerifyInSlice for MetadataVersion

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impl StructuralPartialEq for MetadataVersion

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, dst: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dst. Read more
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impl<Q, K> Equivalent<K> for Q
where Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,

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

Checks if this value is equivalent to the given key. 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.
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impl<T> Allocation for T
where T: RefUnwindSafe + Send + Sync,