Enum mz_storage_client::types::sources::encoding::ColumnSpec

pub enum ColumnSpec {
    Count(usize),
    Header {
        names: Vec<String>,
    },
}

Determines the RelationDesc and decoding of CSV objects

Variants

Count(usize)

The first row is not a header row, and all columns get default names like columnN.

Header

Fields

names: Vec<String>

The first row is a header row and therefore does become data

Each of the values in names becomes the default name of a column in the dataflow.

Implementations

impl ColumnSpec

pub fn arity(&self) -> usize

The number of columns described by the column spec.

pub fn into_header_names(self) -> Option<Vec<String>>

Trait Implementations

impl Arbitrary for ColumnSpec

type Parameters = (<usize as Arbitrary>::Parameters, <Vec<String, Global> as Arbitrary>::Parameters)

The type of parameters that arbitrary_with accepts for configuration of the generated Strategy. Parameters must implement Default.

type Strategy = Union<BoxedStrategy<ColumnSpec>>

The type of Strategy used to generate values of type Self.

fn arbitrary_with(_top: Self::Parameters) -> Self::Strategy

Generates a Strategy for producing arbitrary values of type the implementing type (Self). The strategy is passed the arguments given in args.

fn arbitrary() -> Self::Strategy

Generates a Strategy for producing arbitrary values of type the implementing type (Self).

impl Clone for ColumnSpec

fn clone(&self) -> ColumnSpec

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for ColumnSpec

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for ColumnSpec

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>where
    __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq<ColumnSpec> for ColumnSpec

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

This method tests for self and other values to be equal, and is used by ==.

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

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

impl RustType<ProtoColumnSpec> for ColumnSpec

fn into_proto(&self) -> ProtoColumnSpec

Convert a Self into a Proto value.

fn from_proto(proto: ProtoColumnSpec) -> Result<Self, TryFromProtoError>

Consume and convert a Proto back into a Self value.

impl Serialize for ColumnSpec

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

Serialize this value into the given Serde serializer.

impl Eq for ColumnSpec

impl StructuralEq for ColumnSpec

impl StructuralPartialEq for ColumnSpec