Enum FilterError 

pub enum FilterError {
    UnexpectedChar {
        ch: char,
        pos: usize,
    },
    UnterminatedString {
        pos: usize,
    },
    InvalidNumber {
        token: String,
    },
    ExpectedColumn {
        found: String,
    },
    ColumnTooLong {
        column: String,
        len: usize,
    },
    ExpectedOperator {
        column: String,
        found: String,
    },
    MissingOperator {
        column: String,
    },
    ExpectedValue {
        found: String,
    },
    MissingValue {
        column: String,
    },
    UnquotedValue {
        token: String,
    },
    ExpectedConnector {
        found: String,
    },
    DanglingConnector {
        connector: Connector,
    },
    NullWithNonEqualityOp {
        column: String,
        op: Operator,
    },
    LikeRequiresText {
        column: String,
        found: &'static str,
    },
    TooManyConditions {
        limit: usize,
    },
}

Every way a where expression can fail to compile. The compiler is total: it returns one of these or a clause — never a panic.

Variants

UnexpectedChar

A character outside the grammar’s alphabet (e.g. ;, (, %).

Fields

ch: char

pos: usize

UnterminatedString

A string literal opened but never closed.

Fields

pos: usize

InvalidNumber

A numeric token that is neither a valid i64 nor a finite f64.

Fields

token: String

ExpectedColumn

A column identifier was expected but a non-identifier was found.

Fields

found: String

ColumnTooLong

A column identifier exceeds Postgres’ 63-byte limit.

Fields

column: String

len: usize

ExpectedOperator

An operator was expected after a column but something else was found.

Fields

column: String

found: String

MissingOperator

The expression ended where an operator was expected.

Fields

column: String

ExpectedValue

A value was expected after an operator but a symbol was found.

Fields

found: String

MissingValue

The expression ended where a value was expected.

Fields

column: String

UnquotedValue

A bare word in value position — string values must be quoted.

Fields

token: String

ExpectedConnector

Two conditions were adjacent with no AND/OR between them.

Fields

found: String

DanglingConnector

A trailing AND/OR with no following condition (the defect the frozen Python reference silently mis-renders).

Fields

connector: Connector

NullWithNonEqualityOp

NULL compared with an operator other than = / !=.

Fields

column: String

op: Operator

LikeRequiresText

LIKE applied to a non-text value.

Fields

column: String

found: &'static str

TooManyConditions

More than [MAX_CONDITIONS] conditions in one expression.

Fields

limit: usize

Trait Implementations

impl Clone for FilterError

fn clone(&self) -> FilterError

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for FilterError

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

Formats the value using the given formatter.

impl Display for FilterError

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

Formats the value using the given formatter.

impl Error for FilterError

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<FilterError> for StoreError

fn from(e: FilterError) -> Self

Converts to this type from the input type.

impl PartialEq for FilterError

fn eq(&self, other: &FilterError) -> 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 StructuralPartialEq for FilterError