Struct ArrowConversionError 

pub struct ArrowConversionError { /* private fields */ }

Root error type for hdbconnect-arrow crate.

This error type captures all possible failure modes during HANA to Arrow conversion. Exposes predicate methods (is_xxx()) for error classification without exposing internals.

Example

use hdbconnect_arrow::ArrowConversionError;

fn handle_error(err: ArrowConversionError) {
    if err.is_unsupported_type() {
        eprintln!("Unsupported HANA type encountered");
    } else if err.is_schema_mismatch() {
        eprintln!("Schema mismatch detected");
    }
}

Implementations

impl ArrowConversionError

pub const fn unsupported_type(type_id: i16) -> Self

Create error for unsupported HANA type.

pub const fn schema_mismatch(expected: usize, actual: usize) -> Self

Create error for schema mismatch.

pub fn value_conversion( column: impl Into<String>, message: impl Into<String>, ) -> Self

Create error for value conversion failure.

pub fn value_conversion_with_source<E>( column: impl Into<String>, message: impl Into<String>, source: E, ) -> Self

where E: Error + Send + Sync + 'static,

Create error for value conversion failure with source error.

pub const fn decimal_overflow(precision: u8, scale: i8) -> Self

Create error for decimal overflow.

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

Create error for LOB streaming failure.

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

Create error for invalid precision.

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

Create error for invalid scale.

pub const fn is_unsupported_type(&self) -> bool

Returns true if this is an unsupported type error.

pub const fn is_schema_mismatch(&self) -> bool

Returns true if this is a schema mismatch error.

pub const fn is_value_conversion(&self) -> bool

Returns true if this is a value conversion error.

pub const fn is_decimal_overflow(&self) -> bool

Returns true if this is a decimal overflow error.

pub const fn is_arrow_error(&self) -> bool

Returns true if this is an Arrow library error.

pub const fn is_hdbconnect_error(&self) -> bool

Returns true if this is an hdbconnect error.

pub const fn is_lob_streaming(&self) -> bool

Returns true if this is a LOB streaming error.

pub const fn is_invalid_precision(&self) -> bool

Returns true if this is an invalid precision error.

pub const fn is_invalid_scale(&self) -> bool

Returns true if this is an invalid scale error.

pub const fn is_recoverable(&self) -> bool

Returns true if this error is potentially recoverable.

Recoverable errors are typically transient issues that might succeed if retried (e.g., network timeouts, temporary failures).

Non-recoverable errors indicate permanent failures like schema mismatches, unsupported types, or data corruption.

Example

fn process_with_retry<T>(f: impl Fn() -> Result<T>) -> Result<T> {
    for _ in 0..3 {
        match f() {
            Ok(v) => return Ok(v),
            Err(e) if e.is_recoverable() => continue,
            Err(e) => return Err(e),
        }
    }
    f() // Final attempt
}

pub const fn is_configuration_error(&self) -> bool

Returns true if this error is a configuration error.

Configuration errors indicate incorrect setup that won’t be fixed by retrying.

pub const fn is_data_error(&self) -> bool

Returns true if this error is a data error.

Data errors indicate issues with the data being processed.

Trait Implementations

impl Debug for ArrowConversionError

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

Formats the value using the given formatter.

impl Display for ArrowConversionError

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

Formats the value using the given formatter.

impl Error for ArrowConversionError

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<ArrowError> for ArrowConversionError

fn from(err: ArrowError) -> Self

Converts to this type from the input type.

impl From<HdbError> for ArrowConversionError

fn from(err: HdbError) -> Self

Converts to this type from the input type.