Trait BackendError

pub trait BackendError: Error + Sync {
    type ErrorType: Debug;

    // Required methods
    fn new<M, S>(
        error_type: Self::ErrorType,
        message: M,
        source_error: S,
    ) -> Self
       where M: Into<String>,
             S: Into<Option<Error>>;
    fn new_with_traces<M, S>(
        error_type: Self::ErrorType,
        message: M,
        source_error: S,
        backtrace: Backtrace,
        span_trace: SpanTrace,
    ) -> Self
       where M: Into<String>,
             S: Into<Option<Error>>;
    fn backtrace(&self) -> Option<&Backtrace>;
    fn error_type(&self) -> &Self::ErrorType;
    fn message(&self) -> &str;
    fn span_trace(&self) -> &SpanTrace;

    // Provided method
    fn to_different_error<T>(
        self,
        new_error_type: <T as BackendError>::ErrorType,
        new_message: String,
    ) -> T
       where T: BackendError,
             Self: Sized + 'static + Send { ... }
}

The error types of this program all implement this trait for interoperability.

Required Associated Types

type ErrorType: Debug

Required Methods

fn new<M, S>(error_type: Self::ErrorType, message: M, source_error: S) -> Self

where M: Into<String>, S: Into<Option<Error>>,

fn new_with_traces<M, S>( error_type: Self::ErrorType, message: M, source_error: S, backtrace: Backtrace, span_trace: SpanTrace, ) -> Self

where M: Into<String>, S: Into<Option<Error>>,

fn backtrace(&self) -> Option<&Backtrace>

fn error_type(&self) -> &Self::ErrorType

fn message(&self) -> &str

fn span_trace(&self) -> &SpanTrace

Provided Methods

fn to_different_error<T>( self, new_error_type: <T as BackendError>::ErrorType, new_message: String, ) -> T

where T: BackendError, Self: Sized + 'static + Send,

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementors

impl BackendError for UtilError

type ErrorType = UtilErrorType

impl BackendError for ModelError

type ErrorType = ModelErrorType