Enum SchemaError 

#[non_exhaustive]
pub enum SchemaError {
    VersionMismatch {
        found: u32,
        expected: u32,
    },
    DuplicateModel(String),
    DuplicateField {
        model: String,
        field: String,
    },
    InvalidType {
        model: String,
        field: String,
        ty: String,
    },
    UnknownRelationTarget {
        from: String,
        to: String,
    },
    EmptyIdentifier(&'static str),
    Parse(String),
}

Reasons a schema can be rejected. Named variants (never raw strings) so tooling can branch on the failure kind.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

VersionMismatch

The document’s version field doesn’t match SCHEMA_VERSION.

Fields

found: u32

expected: u32

DuplicateModel(String)

Two models share the same name.

DuplicateField

Two fields in the same model share the same name.

Fields

model: String

field: String

InvalidType

A field’s type is not in VALID_TYPE_NAMES.

Fields

model: String

field: String

ty: String

UnknownRelationTarget

A relation’s to doesn’t name any model in the schema.

Fields

from: String

to: String

EmptyIdentifier(&'static str)

An identifier-shaped string is empty. Guards against callers that forget to fill in name, table, etc.

Parse(String)

Failed to parse a schema document from its on-disk bytes.

Trait Implementations

impl Clone for SchemaError

fn clone(&self) -> SchemaError

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SchemaError

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

Formats the value using the given formatter.

impl Display for SchemaError

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

Formats the value using the given formatter.

impl Error for SchemaError

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<SchemaError> for Error

fn from(e: SchemaError) -> Self

Converts to this type from the input type.

impl From<SchemaError> for GenerateError

fn from(e: SchemaError) -> Self

Converts to this type from the input type.

impl PartialEq for SchemaError

fn eq(&self, other: &SchemaError) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl StructuralPartialEq for SchemaError