Enum Value 

pub enum Value {
    Null,
    Boolean(bool),
    Integer(i64),
    Real(f64),
    Text(String),
    Blob(Vec<u8>),
    Timestamp(i64),
}

A database value

Variants

Null

NULL value (also the Default)

Boolean(bool)

Boolean value

Integer(i64)

64-bit signed integer

Real(f64)

64-bit floating point

Text(String)

UTF-8 string

Blob(Vec<u8>)

Binary data

Timestamp(i64)

Timestamp (Unix milliseconds)

Implementations

impl Value

pub fn is_null(&self) -> bool

Check if value is NULL

pub fn as_bool(&self) -> Option<bool>

Get value as boolean, if applicable

pub fn as_i64(&self) -> Option<i64>

Get value as i64, if applicable

pub fn as_f64(&self) -> Option<f64>

Get value as f64, if applicable

pub fn as_str(&self) -> Option<&str>

Get value as string reference, if applicable

pub fn as_bytes(&self) -> Option<&[u8]>

Get value as byte slice, if applicable

pub fn column_type(&self) -> ColumnType

Get the column type of this value

pub fn serialize(&self, buf: &mut impl BufMut)

Serialize value to bytes

pub fn deserialize(buf: &mut impl Buf) -> Result<Self>

Deserialize value from bytes

pub fn skip(buf: &mut impl Buf) -> Result<()>

Skip past one serialized value in the buffer without allocating. Advances the cursor by the appropriate number of bytes.

pub fn serialized_size(&self) -> usize

Get the serialized size of this value

pub fn size_estimate(&self) -> usize

Estimate the memory size of this value (for GC tracking)

Trait Implementations

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

Formats the value using the given formatter.

impl Default for Value

fn default() -> Value

Returns the “default value” for a type.

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

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Display for Value

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

Formats the value using the given formatter.

impl From<&str> for Value

fn from(v: &str) -> Self

Converts to this type from the input type.

impl<T> From<Option<T>> for Value

where T: Into<Value>,

fn from(v: Option<T>) -> Self

Converts to this type from the input type.

impl From<String> for Value

fn from(v: String) -> Self

Converts to this type from the input type.

impl From<Vec<u8>> for Value

fn from(v: Vec<u8>) -> Self

Converts to this type from the input type.

impl From<bool> for Value

fn from(v: bool) -> Self

Converts to this type from the input type.

impl From<f64> for Value

fn from(v: f64) -> Self

Converts to this type from the input type.

impl From<i32> for Value

fn from(v: i32) -> Self

Converts to this type from the input type.

impl From<i64> for Value

fn from(v: i64) -> Self

Converts to this type from the input type.

impl Hash for Value

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 Ord for Value

fn cmp(&self, other: &Self) -> 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: &Self) -> 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::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Eq for Value

impl StructuralPartialEq for Value