Struct Schema

pub struct Schema {
    pub endianness: Endianness,
    pub fields: Option<Vec<Field>>,
    pub custom_metadata: Option<Vec<KeyValue>>,
    pub features: Option<Vec<Feature>>,
}

---

A Schema describes the columns in a row batch

Generated from these locations:

• Table Schema in the file Schema.fbs:556

Fields

endianness: Endianness

endianness of the buffer it is Little Endian by default if endianness doesn’t match the underlying system then the vectors need to be converted

fields: Option<Vec<Field>>

The field fields in the table Schema

custom_metadata: Option<Vec<KeyValue>>

The field custom_metadata in the table Schema

features: Option<Vec<Feature>>

Features used in the stream/file.

Implementations

impl Schema

pub fn builder() -> SchemaBuilder<()>

Creates a SchemaBuilder for serializing an instance of this table.

pub fn create( builder: &mut Builder, field_endianness: impl WriteAsDefault<Endianness, Endianness>, field_fields: impl WriteAsOptional<Offset<[Offset<Field>]>>, field_custom_metadata: impl WriteAsOptional<Offset<[Offset<KeyValue>]>>, field_features: impl WriteAsOptional<Offset<[Feature]>>, ) -> Offset<Self>

Trait Implementations

impl Clone for Schema

fn clone(&self) -> Schema

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Schema

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

Formats the value using the given formatter.

impl Default for Schema

fn default() -> Self

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for Schema

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Hash for Schema

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 Ord for Schema

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

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for Schema

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

Tests for self and other values to be equal, and is used by ==.

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

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

impl PartialOrd for Schema

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

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

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

impl Serialize for Schema

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl<'a> TryFrom<SchemaRef<'a>> for Schema

type Error = Error

The type returned in the event of a conversion error.

fn try_from(value: SchemaRef<'a>) -> Result<Self>

Performs the conversion.

impl Eq for Schema

impl StructuralPartialEq for Schema

impl VectorWrite<Offset<Schema>> for Schema

Safety

The planus compiler generates implementations that initialize the bytes in write_values.

impl WriteAs<Offset<Schema>> for Schema

impl WriteAsOffset<Schema> for Schema

impl<T0: WriteAsDefault<Endianness, Endianness>, T1: WriteAsOptional<Offset<[Offset<Field>]>>, T2: WriteAsOptional<Offset<[Offset<KeyValue>]>>, T3: WriteAsOptional<Offset<[Feature]>>> WriteAsOffset<Schema> for SchemaBuilder<(T0, T1, T2, T3)>

impl WriteAsOptional<Offset<Schema>> for Schema