pub fn coerce_variable_values(
    schema: &Schema,
    operation: &q::OperationDefinition,
    variables: &Option<QueryVariables>,
) -> Result<HashMap<q::Name, q::Value>, Vec<QueryExecutionError>> {
    let mut coerced_values = HashMap::new();
    let mut errors = vec![];

    for variable_def in qast::get_variable_definitions(operation)
        .into_iter()
        .flatten()
    {
        // Skip variable if it has an invalid type
        if !sast::is_input_type(&schema.document, &variable_def.var_type) {
            errors.push(QueryExecutionError::InvalidVariableTypeError(
                variable_def.position,
                variable_def.name.to_owned(),
            ));
            continue;
        }

        let value = variables
            .as_ref()
            .and_then(|vars| vars.get(&variable_def.name));

        let value = match value.or(variable_def.default_value.as_ref()) {
            // No variable value provided and no default for non-null type, fail
            None => {
                if sast::is_non_null_type(&variable_def.var_type) {
                    errors.push(QueryExecutionError::MissingVariableError(
                        variable_def.position,
                        variable_def.name.to_owned(),
                    ));
                };
                continue;
            }
            Some(value) => value,
        };

        // We have a variable value, attempt to coerce it to the value type
        // of the variable definition
        coerced_values.insert(
            variable_def.name.to_owned(),
            coerce_variable_value(schema, variable_def, &value)?,
        );
    }

    if errors.is_empty() {
        Ok(coerced_values)
    } else {
        Err(errors)
    }
}
/// Coerces variable values for an operation.
Coerces variable values for an operation.
Coerces variable values for an operation .
pub fn coerce_variable_values(
    schema: &Schema,
    operation: &q::OperationDefinition,
    variables: &Option<QueryVariables>,
) -> Result<HashMap<q::Name, q::Value>, Vec<QueryExecutionError>> {
    let mut coerced_values = HashMap::new();
    let mut errors = vec![];
    for variable_def in qast::get_variable_definitions(operation)
        .into_iter()
        .flatten()
    {
        // Skip variable if it has an invalid type
        if !sast::is_input_type(&schema.document, &variable_def.var_type) {
            errors.push(QueryExecutionError::InvalidVariableTypeError(
                variable_def.position,
                variable_def.name.to_owned(),
            ));
            continue;
        }
        let value = variables
            .as_ref()
            .and_then(|vars| vars.get(&variable_def.name));
        let value = match value.or(variable_def.default_value.as_ref()) {
            // No variable value provided and no default for non-null type, fail
            None => {
                if sast::is_non_null_type(&variable_def.var_type) {
                    errors.push(QueryExecutionError::MissingVariableError(
                        variable_def.position,
                        variable_def.name.to_owned(),
                    ));
                };
                continue;
            }
            Some(value) => value,
        };
        // We have a variable value, attempt to coerce it to the value type
        // of the variable definition
        coerced_values.insert(
            variable_def.name.to_owned(),
            coerce_variable_value(schema, variable_def, &value)?,
        );
    }
    if errors.is_empty() {
        Ok(coerced_values)
    } else {
        Err(errors)
    }
}
pub fn coerce_variable_values ( schema : & Schema , operation : & q :: OperationDefinition , variables : & Option < QueryVariables > , ) -> Result < HashMap < q :: Name , q :: Value > , Vec < QueryExecutionError > > { let mut coerced_values = HashMap :: new ( ) ; let mut errors = vec ! [ ] ; for variable_def in qast :: get_variable_definitions ( operation ) . into_iter ( ) . flatten ( ) { // Skip variable if it has an invalid type if ! sast :: is_input_type ( & schema . document , & variable_def . var_type ) { errors . push ( QueryExecutionError :: InvalidVariableTypeError ( variable_def . position , variable_def . name . to_owned ( ) , ) ) ; continue ; } let value = variables . as_ref ( ) . and_then ( | vars | vars . get ( & variable_def . name ) ) ; let value = match value . or ( variable_def . default_value . as_ref ( ) ) { // No variable value provided and no default for non-null type, fail None => { if sast :: is_non_null_type ( & variable_def . var_type ) { errors . push ( QueryExecutionError :: MissingVariableError ( variable_def . position , variable_def . name . to_owned ( ) , ) ) ; } ; continue ; } Some ( value ) => value , } ; // We have a variable value, attempt to coerce it to the value type // of the variable definition coerced_values . insert ( variable_def . name . to_owned ( ) , coerce_variable_value ( schema , variable_def , & value ) ? , ) ; } if errors . is_empty ( ) { Ok ( coerced_values ) } else { Err ( errors ) } }
Coerces variable values for an operation.
Coerces variable values for an operation .
schema
&Schema
operation
&q::OperationDefinition
variables
&Option<QueryVariables>
schema
&Schema
operation
&q::OperationDefinition
variables
&Option<QueryVariables>