Enum scylla_cql::types::deserialize::row::BuiltinTypeCheckErrorKind

#[non_exhaustive]
pub enum BuiltinTypeCheckErrorKind {
    WrongColumnCount {
        rust_cols: usize,
        cql_cols: usize,
    },
    ColumnWithUnknownName {
        column_index: usize,
        column_name: String,
    },
    ValuesMissingForColumns {
        column_names: Vec<&'static str>,
    },
    ColumnNameMismatch {
        field_index: usize,
        column_index: usize,
        rust_column_name: &'static str,
        db_column_name: String,
    },
    ColumnTypeCheckFailed {
        column_index: usize,
        column_name: String,
        err: TypeCheckError,
    },
    DuplicatedColumn {
        column_index: usize,
        column_name: &'static str,
    },
}

Describes why type checking incoming result column types again given Rust type failed.

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.

WrongColumnCount

The Rust type expects rust_cols columns, but the statement operates on cql_cols.

Fields

rust_cols: usize

The number of values that the Rust type provides.

cql_cols: usize

The number of columns that the statement operates on.

ColumnWithUnknownName

The CQL row contains a column for which a corresponding field is not found in the Rust type.

Fields

column_index: usize

Index of the excess column.

column_name: String

Name of the column that is present in CQL row but not in the Rust type.

ValuesMissingForColumns

Several values required by the Rust type are not provided by the DB.

Fields

column_names: Vec<&'static str>

Names of the columns in the Rust type for which the DB doesn’t provide value.

ColumnNameMismatch

A different column name was expected at given position.

Fields

field_index: usize

Index of the field determining the expected name.

column_index: usize

Index of the column having mismatched name.

rust_column_name: &'static str

Name of the column, as expected by the Rust type.

db_column_name: String

Name of the column for which the DB requested a value.

ColumnTypeCheckFailed

Column type check failed between Rust type and DB type at given position (=in given column).

Fields

column_index: usize

Index of the column.

column_name: String

Name of the column, as provided by the DB.

err: TypeCheckError

Inner type check error due to the type mismatch.

DuplicatedColumn

Duplicated column in DB metadata.

Fields

column_index: usize

Column index of the second occurrence of the column with the same name.

column_name: &'static str

The name of the duplicated column.

Trait Implementations

impl Clone for BuiltinTypeCheckErrorKind

fn clone(&self) -> BuiltinTypeCheckErrorKind

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for BuiltinTypeCheckErrorKind

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

Formats the value using the given formatter.

impl Display for BuiltinTypeCheckErrorKind

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

Formats the value using the given formatter.