Enum DataFrameError 

pub enum DataFrameError {
    Io {
        source: Error,
        path: Option<PathBuf>,
    },
    SchemaMismatch {
        message: String,
    },
    TypeMismatch {
        column: Option<String>,
        expected: String,
        actual: String,
    },
    ColumnNotFound {
        name: String,
    },
    InvalidOperation {
        message: String,
    },
    Configuration {
        option: String,
        message: String,
    },
    Arrow {
        source: ArrowError,
    },
    Parquet {
        source: ParquetError,
    },
}

Re-export of the crate error type and result alias. Errors returned by alopex-dataframe operations.

Variants

Io

OS-level I/O error (optionally associated with a path).

Fields

source: Error

path: Option<PathBuf>

SchemaMismatch

Arrow schema-related mismatch (e.g. different schema across batches).

Fields

message: String

TypeMismatch

Data type mismatch (e.g. non-numeric aggregation or incompatible dtypes).

Fields

column: Option<String>

expected: String

actual: String

ColumnNotFound

Referenced column does not exist.

Fields

name: String

InvalidOperation

Operation is not supported or invalid for the current inputs.

Fields

message: String

Configuration

Invalid configuration option was provided.

Fields

option: String

message: String

Arrow

Error originating from Arrow compute / record batch APIs.

Fields

source: ArrowError

Parquet

Error originating from Parquet APIs.

Fields

source: ParquetError

Implementations

impl DataFrameError

pub fn io(source: Error) -> Self

Create an I/O error without a path.

pub fn io_with_path(source: Error, path: impl Into<PathBuf>) -> Self

Create an I/O error associated with a path.

pub fn schema_mismatch(message: impl Into<String>) -> Self

Create a schema mismatch error with a message.

pub fn type_mismatch( column: impl Into<Option<String>>, expected: impl Into<String>, actual: impl Into<String>, ) -> Self

Create a type mismatch error with optional column context.

pub fn column_not_found(name: impl Into<String>) -> Self

Create a missing column error.

pub fn invalid_operation(message: impl Into<String>) -> Self

Create an invalid operation error.

pub fn configuration( option: impl Into<String>, message: impl Into<String>, ) -> Self

Create an invalid configuration error.

Trait Implementations

impl Debug for DataFrameError

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

Formats the value using the given formatter.

impl Display for DataFrameError

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

Formats the value using the given formatter.

impl Error for DataFrameError

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.