Struct SourceProjection 

pub struct SourceProjection { /* private fields */ }

Implementations

impl SourceProjection

pub fn retaining_all() -> Self

pub fn contains(&self, column: &str) -> bool

pub fn retain_all(&mut self)

pub fn insert(&mut self, column: String)

pub fn extend(&mut self, columns: impl IntoIterator<Item = String>)

pub fn explicit_columns(self) -> Option<BTreeSet<String>>

pub fn metadata(&self) -> RelationMetadataProjection

pub fn metadata_mut(&mut self) -> &mut RelationMetadataProjection

Trait Implementations

impl Clone for SourceProjection

fn clone(&self) -> SourceProjection

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SourceProjection

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

Formats the value using the given formatter.

impl Default for SourceProjection

fn default() -> SourceProjection

Returns the “default value” for a type.