Enum Value 

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

A bound parameter or literal.

SQLite has exactly these storage classes. Richer Rust types are flattened through From implementations: booleans become 0 / 1, dates and times become ISO 8601 text, UUIDs become hyphenated text, JSON becomes its textual form and decimals become their exact decimal text.

Variants

Null

SQL NULL.

Integer(i64)

A 64-bit signed integer.

Real(f64)

A 64-bit float.

Text(String)

UTF-8 text.

Blob(Vec<u8>)

Raw bytes.

Implementations

impl Value

pub fn is_null(&self) -> bool

Whether this is NULL.

pub fn to_literal(&self) -> String

Renders the value as a SQL literal.

This is for debugging output only; execution always binds parameters, so the escaping here never has to be injection-proof against the engine, only readable.

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<(), Error>

Formats the value using the given formatter.

impl Display for Value

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

Formats the value using the given formatter.

impl From<&String> for Value

fn from(v: &String) -> Value

Converts to this type from the input type.

impl<T> From<&T> for Value

where T: Into<Value> + Clone + ValueRefInto,

fn from(v: &T) -> Value

Converts to this type from the input type.

impl From<&[u8]> for Value

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

Converts to this type from the input type.

impl From<&str> for Value

fn from(v: &str) -> Value

Converts to this type from the input type.

impl<Tz> From<DateTime<Tz>> for Value

where Tz: TimeZone,

fn from(v: DateTime<Tz>) -> Value

Converts to this type from the input type.

impl From<Decimal> for Value

Available on crate feature with-rust_decimal only.

fn from(v: Decimal) -> Value

Converts to this type from the input type.

impl From<NaiveDate> for Value

fn from(v: NaiveDate) -> Value

Converts to this type from the input type.

impl From<NaiveDateTime> for Value

fn from(v: NaiveDateTime) -> Value

Converts to this type from the input type.

impl From<NaiveTime> for Value

fn from(v: NaiveTime) -> Value

Converts to this type from the input type.

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

where T: Into<Value>,

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

Converts to this type from the input type.

impl From<String> for Value

fn from(v: String) -> Value

Converts to this type from the input type.

impl From<Uuid> for Value

Available on crate feature with-uuid only.

fn from(v: Uuid) -> Value

Converts to this type from the input type.

impl From<Value> for Value

Available on crate feature with-json only.

fn from(v: Value) -> Value

Converts to this type from the input type.

impl From<Vec<u8>> for Value

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

Converts to this type from the input type.

impl From<bool> for Value

fn from(v: bool) -> Value

Converts to this type from the input type.

impl From<char> for Value

fn from(v: char) -> Value

Converts to this type from the input type.

impl From<f32> for Value

fn from(v: f32) -> Value

Converts to this type from the input type.

impl From<f64> for Value

fn from(v: f64) -> Value

Converts to this type from the input type.

impl From<i8> for Value

fn from(v: i8) -> Value

Converts to this type from the input type.

impl From<i16> for Value

fn from(v: i16) -> Value

Converts to this type from the input type.

impl From<i32> for Value

fn from(v: i32) -> Value

Converts to this type from the input type.

impl From<i64> for Value

fn from(v: i64) -> Value

Converts to this type from the input type.

impl From<u8> for Value

fn from(v: u8) -> Value

Converts to this type from the input type.

impl From<u16> for Value

fn from(v: u16) -> Value

Converts to this type from the input type.

impl From<u32> for Value

fn from(v: u32) -> Value

Converts to this type from the input type.

impl FromValue for Value

const TYPE_NAME: &'static str = "Value"

The name used in error messages.

fn from_value(value: Value, _column: &str) -> Result<Self>

Decodes a value; column is only used for error messages.

impl PartialEq for Value

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Value