Enum Value

pub enum Value {
    Bool(bool),
    I8(i8),
    I16(i16),
    I32(i32),
    I64(i64),
    I128(i128),
    U8(u8),
    U16(u16),
    U32(u32),
    U64(u64),
    U128(u128),
    F32(f32),
    F64(f64),
    Decimal(Decimal),
    Str(String),
    Bytea(Vec<u8>),
    Inet(IpAddr),
    Date(NaiveDate),
    Timestamp(NaiveDateTime),
    Time(NaiveTime),
    Interval(Interval),
    Uuid(u128),
    Map(HashMap<String, Value>),
    List(Vec<Value>),
    Point(Point),
    Null,
}

Variants

Bool(bool)

I8(i8)

I16(i16)

I32(i32)

I64(i64)

I128(i128)

U8(u8)

U16(u16)

U32(u32)

U64(u64)

U128(u128)

F32(f32)

F64(f64)

Decimal(Decimal)

Str(String)

Bytea(Vec<u8>)

Inet(IpAddr)

Date(NaiveDate)

Timestamp(NaiveDateTime)

Time(NaiveTime)

Interval(Interval)

Uuid(u128)

Map(HashMap<String, Value>)

List(Vec<Value>)

Point(Point)

Null

Implementations

impl Value

pub fn parse_json_map(value: &str) -> Result<Value, Error>

pub fn parse_json_list(value: &str) -> Result<Value, Error>

impl Value

pub fn evaluate_eq_with_literal(&self, other: &Literal<'_>) -> bool

pub fn evaluate_cmp_with_literal(&self, other: &Literal<'_>) -> Option<Ordering>

pub fn try_from_literal( data_type: &DataType, literal: &Literal<'_>, ) -> Result<Value, Error>

pub fn try_cast_from_literal( data_type: &DataType, literal: &Literal<'_>, ) -> Result<Value, Error>

impl Value

pub fn selector(&self, selector: &str) -> Result<Value, Error>

pub fn selector_by_index(&self, selector: &[Value]) -> Result<Value, Error>

impl Value

pub fn evaluate_eq(&self, other: &Value) -> bool

pub fn evaluate_cmp(&self, other: &Value) -> Option<Ordering>

pub fn is_zero(&self) -> bool

pub fn get_type(&self) -> Option<DataType>

pub fn validate_type(&self, data_type: &DataType) -> Result<(), Error>

pub fn validate_null(&self, nullable: bool) -> Result<(), Error>

pub fn cast(&self, data_type: &DataType) -> Result<Value, Error>

pub fn concat(self, other: Value) -> Value

pub fn add(&self, other: &Value) -> Result<Value, Error>

pub fn subtract(&self, other: &Value) -> Result<Value, Error>

pub fn multiply(&self, other: &Value) -> Result<Value, Error>

pub fn divide(&self, other: &Value) -> Result<Value, Error>

pub fn bitwise_and(&self, other: &Value) -> Result<Value, Error>

pub fn modulo(&self, other: &Value) -> Result<Value, Error>

pub fn bitwise_shift_left(&self, rhs: &Value) -> Result<Value, Error>

pub fn bitwise_shift_right(&self, rhs: &Value) -> Result<Value, Error>

pub fn is_null(&self) -> bool

pub fn unary_plus(&self) -> Result<Value, Error>

pub fn unary_minus(&self) -> Result<Value, Error>

pub fn unary_factorial(&self) -> Result<Value, Error>

pub fn unary_bitwise_not(&self) -> Result<Value, Error>

pub fn like(&self, other: &Value, case_sensitive: bool) -> Result<Value, Error>

pub fn extract(&self, date_type: &DateTimeField) -> Result<Value, Error>

pub fn sqrt(&self) -> Result<Value, Error>

pub fn to_cmp_be_bytes(&self) -> Result<Vec<u8>, Error>

Value to Big-Endian for comparison purpose

pub fn position(&self, other: &Value) -> Result<Value, Error>

Description

The operation method differs depending on the argument.

1. If both arguments are String

   • Support only Value::Str variant
   • Returns the position where the first letter of the substring starts if the string contains a substring.
   • Returns Value::I64 0 if the string to be found is not found.
   • Returns minimum value Value::I64 1 when the string is found.
   • Returns Value::Null if NULL parameter found.

2. Other arguments

   • Not Supported Yet.

Examples

use gluesql_core::prelude::Value;

let str1 = Value::Str("ramen".to_owned());
let str2 = Value::Str("men".to_owned());

assert_eq!(str1.position(&str2), Ok(Value::I64(3)));
assert_eq!(str2.position(&str1), Ok(Value::I64(0)));
assert!(Value::Null.position(&str2).unwrap().is_null());
assert!(str1.position(&Value::Null).unwrap().is_null());

pub fn find_idx(&self, sub_val: &Value, start: &Value) -> Result<Value, Error>

Trait Implementations

impl Clone for Value

fn clone(&self) -> Value

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Value

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for Value

fn deserialize<__D>( __deserializer: __D, ) -> Result<Value, <__D as Deserializer<'de>>::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl From<&Value> for String

fn from(v: &Value) -> String

Converts to this type from the input type.

impl From<Key> for Value

fn from(key: Key) -> Value

Converts to this type from the input type.

impl From<Value> for String

fn from(v: Value) -> String

Converts to this type from the input type.

impl PartialEq<Value> for u32

fn eq(&self, other: &Value) -> 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 PartialEq for Value

fn eq(&self, other: &Value) -> 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 PartialOrd<Value> for u32

fn partial_cmp(&self, other: &Value) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl Serialize for Value

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl TryFrom<&Literal<'_>> for Value

type Error = Error

The type returned in the event of a conversion error.

fn try_from(literal: &Literal<'_>) -> Result<Value, Error>

Performs the conversion.

impl TryFrom<&Value> for NaiveDate

type Error = ConvertError

The type returned in the event of a conversion error.

fn try_from(v: &Value) -> Result<NaiveDate, ConvertError>

Performs the conversion.

impl TryFrom<&Value> for NaiveDateTime

type Error = ConvertError

The type returned in the event of a conversion error.

fn try_from(v: &Value) -> Result<NaiveDateTime, ConvertError>

Performs the conversion.

impl TryFrom<&Value> for NaiveTime

type Error = ConvertError

The type returned in the event of a conversion error.

fn try_from(v: &Value) -> Result<NaiveTime, ConvertError>

Performs the conversion.

impl TryFrom<&Value> for u32

type Error = ConvertError

The type returned in the event of a conversion error.

fn try_from(v: &Value) -> Result<u32, ConvertError>

Performs the conversion.

impl TryFrom<Evaluated<'_>> for Value

type Error = Error

The type returned in the event of a conversion error.

fn try_from(e: Evaluated<'_>) -> Result<Value, Error>

Performs the conversion.

impl TryFrom<Literal<'_>> for Value

type Error = Error

The type returned in the event of a conversion error.

fn try_from(literal: Literal<'_>) -> Result<Value, Error>

Performs the conversion.

impl TryFrom<Value> for Expr

type Error = Error

The type returned in the event of a conversion error.

fn try_from(value: Value) -> Result<Expr, Error>

Performs the conversion.

impl TryFrom<Value> for Value

type Error = Error

The type returned in the event of a conversion error.

fn try_from(json_value: Value) -> Result<Value, Error>

Performs the conversion.

impl TryFrom<Value> for u32

type Error = ConvertError

The type returned in the event of a conversion error.

fn try_from(v: Value) -> Result<u32, ConvertError>

Performs the conversion.

impl StructuralPartialEq for Value