Struct PyroSchema 

pub struct PyroSchema<'a> {
    pub documentation: Option<Cow<'a, str>>,
    pub fields: Cow<'a, [PyroField<'a>]>,
}

An ordered collection of PyroFields — the Pyro equivalent of arrow::datatypes::Schema.

Fields

documentation: Option<Cow<'a, str>>

fields: Cow<'a, [PyroField<'a>]>

Implementations

impl<'a> PyroSchema<'a>

pub fn new(fields: Vec<PyroField<'a>>) -> Self

pub fn empty() -> Self

pub fn fields(&self) -> &[PyroField<'a>]

pub fn num_fields(&self) -> usize

pub fn field_with_name(&self, name: &str) -> Option<&PyroField<'a>>

Look up a field by name (linear scan).

pub fn field(&self, index: usize) -> &PyroField<'a>

Get a field by index.

pub fn index_of(&self, name: &str) -> Option<usize>

Returns column index for the given name, if present.

pub fn into_owned(self) -> PyroSchema<'static>

Convert to an fully owned schema (useful for inference results).

pub fn add_docstring(self, doc: impl Into<Cow<'a, str>>) -> Self

Trait Implementations

impl<'a> Clone for PyroSchema<'a>

fn clone(&self) -> PyroSchema<'a>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<'a> Debug for PyroSchema<'a>

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

Formats the value using the given formatter.

impl<'de, 'a> Deserialize<'de> for PyroSchema<'a>

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl<'a> Display for PyroSchema<'a>

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

Formats the value using the given formatter.

impl<'a> Eq for PyroSchema<'a>

impl<'a> From<Vec<PyroField<'a>>> for PyroSchema<'a>

fn from(fields: Vec<PyroField<'a>>) -> Self

Converts to this type from the input type.

impl<'a> Hash for PyroSchema<'a>

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<'a> PartialEq for PyroSchema<'a>

fn eq(&self, other: &PyroSchema<'a>) -> 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<'a> Serialize for PyroSchema<'a>

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl<'a> StructuralPartialEq for PyroSchema<'a>