Trait sqlx::error::DatabaseError
source · [−]pub trait DatabaseError: 'static + Send + Sync + Error {
fn message(&self) -> &str;
fn code(&self) -> Option<Cow<'_, str>> { ... }
fn constraint(&self) -> Option<&str> { ... }
}
Expand description
An error that was returned from the database.
Required Methods
Provided Methods
fn constraint(&self) -> Option<&str>
fn constraint(&self) -> Option<&str>
Returns the name of the constraint that triggered the error, if applicable. If the error was caused by a conflict of a unique index, this will be the index name.
Note
Currently only populated by the Postgres driver.
Implementations
sourceimpl dyn DatabaseError + 'static
impl dyn DatabaseError + 'static
sourcepub fn downcast_ref<E>(&self) -> &E where
E: DatabaseError,
pub fn downcast_ref<E>(&self) -> &E where
E: DatabaseError,
Downcast a reference to this generic database error to a specific database error type.
Panics
Panics if the database error type is not E
. This is a deliberate contrast from
Error::downcast_ref
which returns Option<&E>
. In normal usage, you should know the
specific error type. In other cases, use try_downcast_ref
.
sourcepub fn downcast<E>(
self: Box<dyn DatabaseError + 'static, Global>
) -> Box<E, Global> where
E: DatabaseError,
pub fn downcast<E>(
self: Box<dyn DatabaseError + 'static, Global>
) -> Box<E, Global> where
E: DatabaseError,
Downcast this generic database error to a specific database error type.
Panics
Panics if the database error type is not E
. This is a deliberate contrast from
Error::downcast
which returns Option<E>
. In normal usage, you should know the
specific error type. In other cases, use try_downcast
.
sourcepub fn try_downcast_ref<E>(&self) -> Option<&E> where
E: DatabaseError,
pub fn try_downcast_ref<E>(&self) -> Option<&E> where
E: DatabaseError,
Downcast a reference to this generic database error to a specific database error type.
sourcepub fn try_downcast<E>(
self: Box<dyn DatabaseError + 'static, Global>
) -> Result<Box<E, Global>, Box<dyn DatabaseError + 'static, Global>> where
E: DatabaseError,
pub fn try_downcast<E>(
self: Box<dyn DatabaseError + 'static, Global>
) -> Result<Box<E, Global>, Box<dyn DatabaseError + 'static, Global>> where
E: DatabaseError,
Downcast this generic database error to a specific database error type.