Struct DbError 

pub struct DbError(/* private fields */);

A database error: a query that failed, a lost connection, a broken constraint. Converts into crate::Error with ?.

let inserted = renox::db::sql("INSERT INTO tags (name) VALUES (?)").bind("coffee").execute(&db).await;
match inserted {
    Err(err) if err.is_unique_violation() => { /* already there */ }
    other => { other?; }
}

Implementations

impl DbError

pub fn is_unique_violation(&self) -> bool

A UNIQUE constraint (or primary key) was violated.

pub fn is_foreign_key_violation(&self) -> bool

A REFERENCES constraint was violated.

pub fn is_row_not_found(&self) -> bool

fetch_one or scalar found no row.

pub fn is_retryable(&self) -> bool

Another transaction got in the way and trying again may work: SQLite’s “database is locked” (busy), PostgreSQL’s serialization failure or deadlock. Db::transaction_retrying retries on these.

pub fn is_timeout(&self) -> bool

No connection was free within DATABASE_ACQUIRE_TIMEOUT.

pub fn sqlx(&self) -> &Error

The underlying sqlx error, for what Renox doesn’t cover. sqlx’s version isn’t part of Renox’s stability promise.

Trait Implementations

impl Debug for DbError

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

Formats the value using the given formatter.

impl Display for DbError

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

Formats the value using the given formatter.

impl Error for DbError

fn source(&self) -> Option<&(dyn Error + 'static)>

Returns the lower-level source of this error, if any.

fn description(&self) -> &str

👎Deprecated since 1.42.0:

use the Display impl or to_string()

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting

fn provide<'a>(&'a self, request: &mut Request<'a>)

🔬This is a nightly-only experimental API. (error_generic_member_access)

Provides type-based access to context intended for error reports.

impl From<Error> for DbError

fn from(err: Error) -> Self

Converts to this type from the input type.