Struct tokio_postgres::types::Json

[+] Show declaration

pub struct Json<T>(pub T);

[−] Expand description

A wrapper type to allow arbitrary Serialize/Deserialize types to convert to Postgres JSON values.

Trait Implementations

impl<T> ToSql for Json<T> where
    T: Serialize + Debug, [+]

[+] Show hidden undocumented items

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

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 + 'static + Send + Sync>>[−]

An adaptor method used internally by Rust-Postgres.

impl<T> Debug for Json<T> where
    T: Debug, [+]

[+] Show hidden undocumented items

fn fmt(&self, f: &mut Formatter) -> Result<(), Error>[−]

Formats the value using the given formatter.

impl<'a, T> FromSql<'a> for Json<T> where
    T: Deserialize<'a>, [+]

[+] Show hidden undocumented items

fn from_sql(
    ty: &Type,
    raw: &'a [u8]
) -> Result<Json<T>, Box<dyn Error + 'static + Send + Sync>>[−]

Creates a new value of this type from a buffer of data of the specified Postgres Type in its binary format.

fn accepts(ty: &Type) -> bool[−]

Determines if a value of this type can be created from the specified Postgres Type.

fn from_sql_null(
    ty: &Type
) -> Result<Self, Box<dyn Error + 'static + Send + Sync>>[−]

Creates a new value of this type from a NULL SQL value.

fn from_sql_nullable(
    ty: &Type,
    raw: Option<&'a [u8]>
) -> Result<Self, Box<dyn Error + 'static + Send + Sync>>[−]

A convenience function that delegates to from_sql and from_sql_null depending on the value of raw.