Struct OverloadVariant 

pub struct OverloadVariant { /* private fields */ }

function overload variant

Implementations

impl OverloadVariant

pub fn apply_simple_infer_result(&mut self, infer_result_type: &TypeReference)

apply simple infer result

pub fn apply_common_infer_result(&mut self, infer_result_type: &TypeReference)

apply common infer result

pub fn new( ret_type: &Option<TypeReference>, params: &Vec<FunctionParam>, is_strict: bool, returns_not_null: bool, ) -> Self

create a variant

pub fn ret_type(&self) -> &Option<TypeReference>

type of return value

pub fn scaler_ret_type(&self) -> Option<TypeReference>

return value type for scalar context

pub fn get_arg_def_at(&self, index: usize) -> Option<&FunctionParam>

get argment by zero based index

pub fn is_strict(&self) -> bool

function is strict

pub fn returns_not_null(&self) -> bool

function returns not null

pub fn required_param_count(&self) -> usize

required parameter count

pub fn returning_table(&self) -> ColumnCollection

table fuction result set definitions

pub fn get_result_column_def( &self, column: &ColumnName, ) -> Option<ColumnDefinition>

Get column from funtion result set

pub fn params(&self) -> &Vec<FunctionParam>

get parameter list

Trait Implementations

impl Clone for OverloadVariant

fn clone(&self) -> OverloadVariant

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for OverloadVariant

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for OverloadVariant

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Hash for OverloadVariant

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for OverloadVariant

fn eq(&self, other: &OverloadVariant) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Serialize for OverloadVariant

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Eq for OverloadVariant

impl StructuralPartialEq for OverloadVariant