Enum Value 

pub enum Value {
    Blob(Blob),
    Boolean(Boolean),
    Date(Date),
    DateTime(DateTime),
    Decimal(Decimal),
    Int8(Int8),
    Int16(Int16),
    Int32(Int32),
    Int64(Int64),
    Json(Json),
    Null,
    Text(Text),
    Uint8(Uint8),
    Uint16(Uint16),
    Uint32(Uint32),
    Uint64(Uint64),
    Uuid(Uuid),
    Custom(CustomValue),
}

A generic wrapper enum to hold any DBMS value.

Variants

Blob(Blob)

Boolean(Boolean)

Date(Date)

DateTime(DateTime)

Decimal(Decimal)

Int8(Int8)

Int16(Int16)

Int32(Int32)

Int64(Int64)

Json(Json)

Null

Text(Text)

Uint8(Uint8)

Uint16(Uint16)

Uint32(Uint32)

Uint64(Uint64)

Uuid(Uuid)

Custom(CustomValue)

Implementations

impl Value

pub fn as_blob(&self) -> Option<&Blob>

Attempts to extract a reference to the inner value if it matches the variant.

impl Value

pub fn as_boolean(&self) -> Option<&Boolean>

Attempts to extract a reference to the inner value if it matches the variant.

impl Value

pub fn as_date(&self) -> Option<&Date>

Attempts to extract a reference to the inner value if it matches the variant.

impl Value

pub fn as_datetime(&self) -> Option<&DateTime>

Attempts to extract a reference to the inner value if it matches the variant.

impl Value

pub fn as_decimal(&self) -> Option<&Decimal>

Attempts to extract a reference to the inner value if it matches the variant.

impl Value

pub fn as_int8(&self) -> Option<&Int8>

Attempts to extract a reference to the inner value if it matches the variant.

impl Value

pub fn as_int16(&self) -> Option<&Int16>

Attempts to extract a reference to the inner value if it matches the variant.

impl Value

pub fn as_int32(&self) -> Option<&Int32>

Attempts to extract a reference to the inner value if it matches the variant.

impl Value

pub fn as_int64(&self) -> Option<&Int64>

Attempts to extract a reference to the inner value if it matches the variant.

impl Value

pub fn as_json(&self) -> Option<&Json>

Attempts to extract a reference to the inner value if it matches the variant.

impl Value

pub fn as_text(&self) -> Option<&Text>

Attempts to extract a reference to the inner value if it matches the variant.

impl Value

pub fn as_uint8(&self) -> Option<&Uint8>

Attempts to extract a reference to the inner value if it matches the variant.

impl Value

pub fn as_uint16(&self) -> Option<&Uint16>

Attempts to extract a reference to the inner value if it matches the variant.

impl Value

pub fn as_uint32(&self) -> Option<&Uint32>

Attempts to extract a reference to the inner value if it matches the variant.

impl Value

pub fn as_uint64(&self) -> Option<&Uint64>

Attempts to extract a reference to the inner value if it matches the variant.

impl Value

pub fn as_uuid(&self) -> Option<&Uuid>

Attempts to extract a reference to the inner value if it matches the variant.

impl Value

pub fn is_null(&self) -> bool

Checks if the value is Value::Null.

pub fn type_name(&self) -> &'static str

Returns the type name of the value as a string.

pub fn as_custom(&self) -> Option<&CustomValue>

Returns reference to the inner [CustomValue] if this is a Custom variant.

pub fn as_custom_type<T>(&self) -> Option<T>

where T: CustomDataType,

Attempts to decode a Custom variant into a concrete CustomDataType.

Returns None if this is not a Custom variant, the type tag doesn’t match, or decoding fails.

Trait Implementations

impl CandidType for Value

fn _ty() -> Type

fn _ty_doc() -> TypeDoc

fn id() -> TypeId

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

where __S: Serializer,

fn ty() -> Type

impl Clone for Value

fn clone(&self) -> Value

Returns a duplicate 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 Encode for Value

Encodes a Value as [discriminant: u8] + [inner_type.encode()].

For Null, only the discriminant byte is written. For Custom, the encoding is [discriminant] + [tag_len: u16 LE] + [tag_bytes] + [data_len: u16 LE] + [encoded_bytes].

const SIZE: DataSize = DataSize::Dynamic

The size characteristic of the data type.

const ALIGNMENT: u16 = DEFAULT_ALIGNMENT

The alignment requirement in bytes for the data type.

fn encode(&self) -> Cow<'_, [u8]>

Encodes the data type into a vector of bytes.

fn decode(data: Cow<'_, [u8]>) -> Result<Value, MemoryError>

Decodes the data type from a slice of bytes.

fn size(&self) -> u16

Returns the size in bytes of the encoded data type.

impl From<&[u8]> for Value

fn from(value: &[u8]) -> Value

Converts to this type from the input type.

impl From<&str> for Value

fn from(value: &str) -> Value

Converts to this type from the input type.

impl From<Blob> for Value

fn from(value: Blob) -> Value

Converts to this type from the input type.

impl From<Boolean> for Value

fn from(value: Boolean) -> Value

Converts to this type from the input type.

impl From<Date> for Value

fn from(value: Date) -> Value

Converts to this type from the input type.

impl From<DateTime> for Value

fn from(value: DateTime) -> Value

Converts to this type from the input type.

impl From<Decimal> for Value

fn from(value: Decimal) -> Value

Converts to this type from the input type.

impl From<Decimal> for Value

fn from(value: Decimal) -> Value

Converts to this type from the input type.

impl From<Int16> for Value

fn from(value: Int16) -> Value

Converts to this type from the input type.

impl From<Int32> for Value

fn from(value: Int32) -> Value

Converts to this type from the input type.

impl From<Int64> for Value

fn from(value: Int64) -> Value

Converts to this type from the input type.

impl From<Int8> for Value

fn from(value: Int8) -> Value

Converts to this type from the input type.

impl From<Json> for Value

fn from(value: Json) -> Value

Converts to this type from the input type.

impl<T> From<Nullable<T>> for Value

where T: DataType,

fn from(nullable: Nullable<T>) -> Value

Converts to this type from the input type.

impl From<Principal> for Value

fn from(val: Principal) -> Value

Converts to this type from the input type.

impl From<String> for Value

fn from(value: String) -> Value

Converts to this type from the input type.

impl From<Text> for Value

fn from(value: Text) -> Value

Converts to this type from the input type.

impl From<Uint16> for Value

fn from(value: Uint16) -> Value

Converts to this type from the input type.

impl From<Uint32> for Value

fn from(value: Uint32) -> Value

Converts to this type from the input type.

impl From<Uint64> for Value

fn from(value: Uint64) -> Value

Converts to this type from the input type.

impl From<Uint8> for Value

fn from(value: Uint8) -> Value

Converts to this type from the input type.

impl From<Uuid> for Value

fn from(value: Uuid) -> Value

Converts to this type from the input type.

impl From<Uuid> for Value

fn from(value: Uuid) -> Value

Converts to this type from the input type.

impl From<Vec<u8>> for Value

fn from(value: Vec<u8>) -> Value

Converts to this type from the input type.

impl From<bool> for Value

fn from(value: bool) -> Value

Converts to this type from the input type.

impl From<i16> for Value

fn from(value: i16) -> Value

Converts to this type from the input type.

impl From<i32> for Value

fn from(value: i32) -> Value

Converts to this type from the input type.

impl From<i64> for Value

fn from(value: i64) -> Value

Converts to this type from the input type.

impl From<i8> for Value

fn from(value: i8) -> Value

Converts to this type from the input type.

impl From<u16> for Value

fn from(value: u16) -> Value

Converts to this type from the input type.

impl From<u32> for Value

fn from(value: u32) -> Value

Converts to this type from the input type.

impl From<u64> for Value

fn from(value: u64) -> Value

Converts to this type from the input type.

impl From<u8> for Value

fn from(value: u8) -> Value

Converts to this type from the input type.

impl FromStr for Value

type Err = ()

The associated error which can be returned from parsing.

fn from_str(s: &str) -> Result<Value, <Value as FromStr>::Err>

Parses a string s to return a value of this type.

impl Hash for Value

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

where __H: Hasher,

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 Ord for Value

fn cmp(&self, other: &Value) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

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 for Value

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 Eq for Value

impl StructuralPartialEq for Value