Enum TimeColumnError 

pub enum TimeColumnError {
    Missing {
        column: String,
    },
    UnsupportedParquetType {
        column: String,
        physical: String,
        logical: String,
    },
    UnsupportedArrowType {
        column: String,
        datatype: String,
    },
}

Errors that can occur when locating or validating a timestamp column.

A timestamp column is required by the table’s time index specification to enable time-series range queries and coverage computation. This enum captures the various ways that validation can fail:

• The column may not exist in the schema.
• The column may exist but use a Parquet type that is not supported.
• The column may exist but use an Arrow type that is not supported.

Variants

Missing

The specified time column was not found in the schema.

This typically indicates either a configuration mismatch (the table’s index spec references a column that doesn’t exist in the data) or a schema evolution issue (the column was removed in a later segment).

Fields

column: String

The name of the time column that was expected but not found.

UnsupportedParquetType

The time column uses a Parquet physical/logical type pair that is not supported.

For example, the column might use an integer or string type instead of a timestamp type, or it might use a timestamp variant (e.g., nanoseconds) that the crate does not currently support.

Fields

column: String

The name of the time column.

physical: String

The Parquet physical type (e.g., INT64, BYTE_ARRAY).

logical: String

The Parquet logical type annotation, if present (e.g., TIMESTAMP, STRING).

UnsupportedArrowType

The time column uses an Arrow data type that is not supported.

This can occur when converting from Parquet to Arrow or when working directly with Arrow data. Supported types typically include timestamp variants with microsecond or millisecond precision.

Fields

column: String

The name of the time column.

datatype: String

The Arrow data type that is not supported (e.g., “String”, “Int32”).

Trait Implementations

impl Clone for TimeColumnError

fn clone(&self) -> TimeColumnError

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for TimeColumnError

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

Formats the value using the given formatter.

impl Display for TimeColumnError

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

Formats the value using the given formatter.

impl Error for TimeColumnError

where Self: Debug + Display,

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 source(&self) -> Option<&(dyn Error + 'static)>

Returns the lower-level source of this error, if any.

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 ErrorCompat for TimeColumnError

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

Returns a Backtrace that may be printed.

fn iter_chain(&self) -> ChainCompat<'_, '_>

where Self: AsErrorSource,

Returns an iterator for traversing the chain of errors, starting with the current error and continuing with recursive calls to Error::source.

impl PartialEq for TimeColumnError

fn eq(&self, other: &TimeColumnError) -> 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 Eq for TimeColumnError

impl StructuralPartialEq for TimeColumnError