Enum MigrationError 

pub enum MigrationError {
    ConflictingChanges(String),
    AmbiguousRename {
        candidates: Vec<String>,
    },
    InvalidSchema(String),
    BreakingChangesNotAllowed {
        count: usize,
    },
}

Error type for migration computation and validation.

Variants

ConflictingChanges(String)

Two or more changes conflict with each other.

AmbiguousRename

Multiple rename candidates found for a single removed predicate.

Fields

candidates: Vec<String>

InvalidSchema(String)

The schema itself is malformed.

BreakingChangesNotAllowed

Breaking changes were detected but allow_breaking_changes is false.

Fields

count: usize

Trait Implementations

impl Clone for MigrationError

fn clone(&self) -> MigrationError

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for MigrationError

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

Formats the value using the given formatter.

impl Display for MigrationError

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

Formats the value using the given formatter.

impl Error for MigrationError

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.