Struct CustomPlanError 

pub struct CustomPlanError { /* private fields */ }

Plan-time decode failure raised by a hand-written FromCell::build_plan or FromRow::build_plan.

Use this for custom validation of column metadata or row shape. The connector’s structured schema mismatches still return SchemaError.

Callers provide only a reason and optional source. The connector adds column context for failures returned through CellPlan::new; row-level plan failures keep no column context.

Implementations

impl CustomPlanError

pub fn new(reason: impl Into<Box<str>>) -> Self

Build a plan-time error with just a reason, equivalent to builder(reason).build().

pub fn builder(reason: impl Into<Box<str>>) -> CustomPlanErrorBuilder

pub fn reason(&self) -> &str

pub fn source(&self) -> Option<&(dyn StdError + Send + Sync + 'static)>

pub fn column_index(&self) -> Option<usize>

The column this plan was being built for, filled in by the connector for FromCell::build_plan failures.

pub fn column_name(&self) -> Option<&str>

Trait Implementations

impl Debug for CustomPlanError

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

Formats the value using the given formatter.

impl Display for CustomPlanError

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

Formats the value using the given formatter.

impl Error for CustomPlanError

fn source(&self) -> Option<&(dyn StdError + '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<CustomPlanError> for PlanBuildError

fn from(error: CustomPlanError) -> Self

Converts to this type from the input type.

impl From<CustomPlanError> for Error

fn from(error: CustomPlanError) -> Self

Converts to this type from the input type.