Enum ValueError

pub enum ValueError {
    ExpectedTable {
        found: Value,
    },
    ExpectedArrayRow {
        field: &'static str,
        found: Row<'static>,
    },
    UnexpectedType {
        expected: &'static str,
        found: Value,
    },
    VecConversionError {
        element_type: &'static str,
        source: Box<dyn Error>,
    },
    MissingField {
        field: &'static str,
        target_type: &'static str,
        remaining_fields: Row<'static>,
    },
}

Errors related to value conversions, usually when converting to a model using realm_model.

Variants

ExpectedTable

Expected a Table value, found something else. This can happen when trying to convert a Value into a Vec<T>, if the data is not structured as expected.

Fields

found: Value

ExpectedArrayRow

Expected an array row, but found something else. This can happen when trying to convert a Row into a target type. In Realm, if a model has a field that’s the equivalent of, e.g. Vec<String>, that is represented as a subtable, where each row has a single column of type String, with name field. If this error occurs, it means the row in the subtable does not have the expected field.

Fields

field: &'static str

The name of the field that was expected.

found: Row<'static>

The row that was found, which did not have the expected field.

UnexpectedType

Expected a different type. This could happen if your realm_model definition is incorrect, and a column has a different type than expected.

Fields

expected: &'static str

The expected type.

found: Value

The actual value.

VecConversionError

Failed to convert a Row from a subtable into a Vec<T>, because the underlying T: TryFrom<Row>> failed.

Fields

element_type: &'static str

The type of the elements in the vector.

source: Box<dyn Error>

The error that occurred during conversion.

MissingField

Missing field when converting a Row into a struct. This can happen if your realm_model definition is incorrect, and a column doesn’t exist, or has a different name than expected.

Fields

field: &'static str

The name of the missing field.

target_type: &'static str

The type of the target struct.

remaining_fields: Row<'static>

The remaining fields in the row. Note that if the missing field is not the first field, some fields may be missing from the overall row, as they were already converted before the missing field was encountered.

Trait Implementations

impl Debug for ValueError

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

Formats the value using the given formatter.

impl Display for ValueError

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

Formats the value using the given formatter.

impl Error for ValueError

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.