Trait toql_core::predicate_handler::PredicateHandler

pub trait PredicateHandler {
    fn build_predicate(
        &self, 
        expression: SqlExpr, 
        args: &[SqlArg], 
        aux_params: &ParameterMap<'_>
    ) -> Result<Option<SqlExpr>, SqlBuilderError>;
}

Required Methods

fn build_predicate(
    &self,
    expression: SqlExpr,
    args: &[SqlArg],
    aux_params: &ParameterMap<'_>
) -> Result<Option<SqlExpr>, SqlBuilderError>

Match filter and return SQL expression or None, if no filtering is required. Do not insert parameters in the SQL expression, use ? instead and provide the argument in the vector. If you miss some arguments, raise an error, typically SqlBuilderError::FilterInvalid

Trait Implementations

impl Debug for dyn PredicateHandler + Send + Sync + 'static

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

Formats the value using the given formatter.

Implementors

impl PredicateHandler for DefaultPredicateHandler