Struct Schema

pub struct Schema {
    pub fields: Vec<Field>,
}

the schema of the executor’s return data

Fields

fields: Vec<Field>

Implementations

impl Schema

pub fn empty() -> &'static Schema

pub fn len(&self) -> usize

pub fn is_empty(&self) -> bool

pub fn new(fields: Vec<Field>) -> Schema

pub fn names(&self) -> Vec<String>

pub fn names_str(&self) -> Vec<&str>

pub fn data_types(&self) -> Vec<DataType>

pub fn fields(&self) -> &[Field]

pub fn into_fields(self) -> Vec<Field>

pub fn create_array_builders(&self, capacity: usize) -> Vec<ArrayBuilderImpl>

Create array builders for all fields in this schema.

pub fn to_prost(&self) -> Vec<Field>

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

pub fn all_type_eq<'a>(inputs: impl IntoIterator<Item = &'a Schema>) -> bool

pub fn formatted_col_names(&self) -> String

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<(), Error>

Formats the value using the given formatter.

impl Default for Schema

fn default() -> Schema

Returns the “default value” for a type.

impl From<&StructType> for Schema

fn from(t: &StructType) -> Schema

Converts to this type from the input type.

impl FromIterator<Field> for Schema

fn from_iter<I>(iter: I) -> Schema

where I: IntoIterator<Item = Field>,

Creates a value from an iterator.

impl Hash for Schema

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

where __H: Hasher,

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 Index<usize> for Schema

type Output = Field

The returned type after indexing.

fn index(&self, index: usize) -> &<Schema as Index<usize>>::Output

Performs the indexing (container[index]) operation.

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 Eq for Schema

impl StructuralPartialEq for Schema