Enum Invariant 

#[non_exhaustive]
pub enum Invariant {
    Depth,
    Unsupported,
    Arrays,
    Buffers,
    Rows,
    ChildLength,
    NullCount,
    Validity,
    BufferLength,
    Size,
    OffsetOrder,
    OffsetRange,
    DictionaryIndex,
    ViewBuffer,
}

The rule an array broke.

This is an enum rather than a string because a host that wants to count refusals by kind, or treat one kind differently from another, should not have to match on prose. The prose is in the detail, which is written for whoever has to go and find the decoder that produced this.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

Depth

The schema nests deeper than this crate will walk.

Unsupported

The type is one this crate does not know how to check.

Arrays

The batch does not have the number of arrays the schema calls for.

Buffers

The batch does not have the number of buffers the schema calls for.

Rows

A top level array is not as long as the batch says it is.

ChildLength

A child array is shorter than its parent needs it to be.

NullCount

The declared null count is not what the validity bitmap says.

Validity

The validity bitmap has fewer bits than the array has slots.

BufferLength

A buffer is shorter than the array’s length requires.

Size

A length and a width multiply to more than this host can address.

OffsetOrder

Offsets run backwards.

OffsetRange

An offset points past the end of the thing it indexes.

DictionaryIndex

A dictionary key is not a slot in the dictionary.

ViewBuffer

A view points at a data buffer that is not there, or past the end of one that is.

Implementations

impl Invariant

pub const fn name(self) -> &'static str

The rule’s name, as it appears in a message.

Trait Implementations

impl Clone for Invariant

fn clone(&self) -> Invariant

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Invariant

impl Debug for Invariant

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

Formats the value using the given formatter.

impl Display for Invariant

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

Formats the value using the given formatter.

impl Eq for Invariant

impl Hash for Invariant

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

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for Invariant

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

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for Invariant