Struct RequiredInput 

pub struct RequiredInput {
    pub placeholder: String,
    pub prompt: String,
    pub default_expr: String,
    pub type_name: String,
}

One \(placeholder) token embedded in a step’s DDL that the caller must resolve to a PyQL expression (compiled via query::compile_fill_expr, evaluated against type_name) before executing that statement — mirrors how a fill expression is resolved, just for a type-change’s conversion expression instead of a backfill.

Fields

placeholder: String

The \(name) token to substitute in the owning step’s DDL text.

prompt: String

Prompt text for the caller to show the user.

default_expr: String

A reasonable default expression — the caller may offer this and accept it on an empty response, matching how a fill’s declared default is offered.

type_name: String

Qualified type name to compile the user’s PyQL expression against.

Trait Implementations

impl Clone for RequiredInput

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for RequiredInput

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

Formats the value using the given formatter.