Struct ProjectStep 

pub struct ProjectStep { /* private fields */ }

Project step - projects specific properties

Implementations

impl ProjectStep

pub fn new(keys: Vec<String>) -> ProjectStep

Create project() step

pub fn keys(&self) -> &[String]

Get projection keys

Trait Implementations

impl Clone for ProjectStep

fn clone(&self) -> ProjectStep

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ProjectStep

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

Formats the value using the given formatter.

impl MapStep for ProjectStep

fn map(&self, traverser: &Traverser) -> TraverserValue

Map a traverser to a new value

impl Step for ProjectStep

fn id(&self) -> &str

Step identifier (unique in traversal)

fn name(&self) -> &str

Human-readable name

fn labels(&self) -> &[String]

Labels assigned to this step

fn add_label(&mut self, label: String)

Add a label to this step

fn requirements(&self) -> &[TraverserRequirement]

Requirements this step declares

fn process_traverser(&self, traverser: Traverser) -> StepResult

Process a single traverser (standard algorithm)

fn reset(&mut self)

Reset step state for reuse

fn clone_step(&self) -> Box<dyn Step>

Clone as trait object

fn as_any(&self) -> &(dyn Any + 'static)

Downcast to concrete type

fn as_any_mut(&mut self) -> &mut (dyn Any + 'static)

Downcast to mutable concrete type