Struct IfExpr 

pub struct IfExpr { /* private fields */ }

A SurrealQL IF <cond> THEN <expr> [ELSE IF <cond> THEN <expr>]… [ELSE <expr>] END expression. As a DynExpr it nests anywhere an expression is taken — a SET value, a SELECT projection, a RETURN, or a WHERE.

IfExpr::new(Raw("age >= 18".into()), Raw("'adult'".into()))
    .else_if(Raw("age >= 13".into()), Raw("'teen'".into()))
    .else_(Raw("'child'".into()));
// IF age >= 18 THEN 'adult' ELSE IF age >= 13 THEN 'teen' ELSE 'child' END

Implementations

impl IfExpr

pub fn new(cond: impl DynExpr + 'static, then: impl DynExpr + 'static) -> Self

Begin IF <cond> THEN <then>.

pub fn else_if( self, cond: impl DynExpr + 'static, then: impl DynExpr + 'static, ) -> Self

Add an ELSE IF <cond> THEN <then> branch.

pub fn else_(self, expr: impl DynExpr + 'static) -> Self

Add the trailing ELSE <expr> branch.

Trait Implementations

impl Debug for IfExpr

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

Formats the value using the given formatter.

impl DynExpr for IfExpr

fn render_dyn(&self, buf: &mut String)

Append this expression’s SurrealQL to buf with all values inlined.

fn render_dyn_params( &self, buf: &mut String, params: &mut BTreeMap<String, Value>, )

Render with $param placeholders, collecting values into params. Default falls back to inline rendering; Literal nodes override this to emit $pN placeholders and collect their value.