Struct dbn::metadata::MetadataBuilder

pub struct MetadataBuilder<D, Sch, Start, StIn, StOut> { /* private fields */ }

Helper for constructing Metadata structs with defaults.

This struct uses type state to ensure at compile time that all the required fields are set. If a required field is not set, build() won’t be visible.

Required fields

• dataset
• schema
• start
• stype_in
• stype_out

Implementations

impl MetadataBuilder<Unset, Unset, Unset, Unset, Unset>

pub fn new() -> Self

Creates a new instance of the builder.

impl<D, Sch, Start, StIn, StOut> MetadataBuilder<D, Sch, Start, StIn, StOut>

pub fn dataset( self, dataset: String ) -> MetadataBuilder<String, Sch, Start, StIn, StOut>

Sets the dataset and returns the builder.

pub fn schema( self, schema: Schema ) -> MetadataBuilder<D, Schema, Start, StIn, StOut>

Sets the schema and returns the builder.

pub fn start(self, start: u64) -> MetadataBuilder<D, Sch, u64, StIn, StOut>

Sets the start and returns the builder.

pub fn end(self, end: Option<NonZeroU64>) -> Self

Sets the end and returns the builder.

pub fn limit(self, limit: Option<NonZeroU64>) -> Self

Sets the limit and returns the builder.

pub fn stype_in( self, stype_in: SType ) -> MetadataBuilder<D, Sch, Start, SType, StOut>

Sets the stype_in and returns the builder.

pub fn stype_out( self, stype_out: SType ) -> MetadataBuilder<D, Sch, Start, StIn, SType>

Sets the stype_out and returns the builder.

pub fn ts_out(self, ts_out: bool) -> Self

Sets the ts_out and returns the builder.

pub fn symbols(self, symbols: Vec<String>) -> Self

Sets the symbols and returns the builder.

pub fn partial(self, partial: Vec<String>) -> Self

Sets the partial and returns the builder.

pub fn not_found(self, not_found: Vec<String>) -> Self

Sets the not_found and returns the builder.

pub fn mappings(self, mappings: Vec<SymbolMapping>) -> Self

Sets the mappings and returns the builder.

impl MetadataBuilder<String, Schema, u64, SType, SType>

pub fn build(self) -> Metadata

Constructs a Metadata object. The availability of this method indicates all required fields have been set.

Trait Implementations

impl<D: Debug, Sch: Debug, Start: Debug, StIn: Debug, StOut: Debug> Debug for MetadataBuilder<D, Sch, Start, StIn, StOut>

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

Formats the value using the given formatter.

impl Default for MetadataBuilder<Unset, Unset, Unset, Unset, Unset>

fn default() -> Self

Returns the “default value” for a type.