Enum butane::SqlVal

pub enum SqlVal {
    Null,
    Bool(bool),
    Int(i32),
    BigInt(i64),
    Real(f64),
    Text(String),
    Blob(Vec<u8, Global>),
    Json(Value),
    Timestamp(NaiveDateTime),
    Custom(Box<SqlValCustom, Global>),
}

A database value.

For conversion between SqlVal and other types, see FromSql and ToSql.

Variants

Null

Bool(bool)

Int(i32)

BigInt(i64)

Real(f64)

Text(String)

Blob(Vec<u8, Global>)

Json(Value)

Timestamp(NaiveDateTime)

Custom(Box<SqlValCustom, Global>)

Implementations

impl SqlVal

pub fn as_ref(&self) -> SqlValRef<'_>

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

pub fn integer(&self) -> Result<i32, Error>

pub fn bigint(&self) -> Result<i64, Error>

pub fn real(&self) -> Result<f64, Error>

pub fn text(&self) -> Result<&str, Error>

pub fn owned_text(self) -> Result<String, Error>

pub fn blob(&self) -> Result<&[u8], Error>

pub fn owned_blob(self) -> Result<Vec<u8, Global>, Error>

pub fn is_compatible(&self, t: &SqlType, null_allowed: bool) -> bool

Tests if this sqlval is compatible with the given SqlType. There are no implicit type conversions (i.e. if this is a SqlVal::Bool, it is only compatible with SqlType::Bool, not with SqlType::Int, even though an int contains enough information to encode a bool.

pub fn sqltype(&self) -> Option<SqlType>

Trait Implementations

impl Clone for SqlVal

fn clone(&self) -> SqlVal

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for SqlVal

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for SqlVal

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

Deserialize this value from the given Serde deserializer.

impl Display for SqlVal

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

Formats the value using the given formatter.

impl<'a> From<&'a SqlVal> for SqlValRef<'a>

fn from(val: &'a SqlVal) -> SqlValRef<'a>

Converts to this type from the input type.

impl From<SqlValRef<'_>> for SqlVal

fn from(valref: SqlValRef<'_>) -> SqlVal

Converts to this type from the input type.

impl<T> From<T> for SqlValwhere T: ToSql,

fn from(val: T) -> SqlVal

Converts to this type from the input type.

impl PartialEq<SqlVal> for SqlVal

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

This method tests for self and other values to be equal, and is used by ==.

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

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

impl Serialize for SqlVal

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 ToSql for SqlVal

fn to_sql( &self, ty: &Type, out: &mut BytesMut ) -> Result<IsNull, Box<dyn Error + Sync + Send + 'static, Global>>

Converts the value of self into the binary format of the specified Postgres Type, appending it to out.

fn accepts(ty: &Type) -> bool

Determines if a value of this type can be converted to the specified Postgres Type.

fn to_sql_checked( &self, ty: &Type, out: &mut BytesMut ) -> Result<IsNull, Box<dyn Error + Sync + Send + 'static, Global>>

An adaptor method used internally by Rust-Postgres.

fn encode_format(&self, _ty: &Type) -> Format

Specify the encode format

impl ToSql for SqlVal

fn to_sql(&self) -> Result<ToSqlOutput<'_>, Error>

Converts Rust value to SQLite value

impl StructuralPartialEq for SqlVal