Struct prql_compiler::ast::pl::frame::Frame

pub struct Frame {
    pub columns: Vec<FrameColumn>,
    pub inputs: Vec<FrameInput>,
    pub prev_columns: Vec<FrameColumn>,
}

Represents the object that is manipulated by the pipeline transforms. Similar to a view in a database or a data frame.

Fields

columns: Vec<FrameColumn>

inputs: Vec<FrameInput>

prev_columns: Vec<FrameColumn>

Implementations

impl Frame

pub fn clear(&mut self)

pub fn apply_assign(&mut self, expr: &Expr, context: &Context)

pub fn apply_assigns(&mut self, assigns: &[Expr], context: &Context)

pub fn find_input(&self, input_name: &str) -> Option<&FrameInput>

pub fn rename(&mut self, alias: String)

Renames all frame inputs to given alias.

Trait Implementations

impl Clone for Frame

fn clone(&self) -> Frame

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Frame

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

Formats the value using the given formatter.

impl Default for Frame

fn default() -> Frame

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for Frame

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

Deserialize this value from the given Serde deserializer.

impl Display for Frame

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

Formats the value using the given formatter.

impl PartialEq<Frame> for Frame

fn eq(&self, other: &Frame) -> 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 Serialize for Frame

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 Frame

impl StructuralEq for Frame

impl StructuralPartialEq for Frame