Struct SqlState 

pub struct SqlState(/* private fields */);

A SQLSTATE error code, including custom codes outside the standard, usable as a match pattern.

use diesel::result::{SqlState, SqlStateClass};

const CUSTOM: SqlState = SqlState::new(*b"P1001").unwrap();

let code: SqlState = "P1001".parse().unwrap();
assert!(matches!(code, CUSTOM));
assert_eq!(code.as_str(), "P1001");
assert_eq!(code.class().as_str(), "P1");
assert!(!code.class().is_standard());
assert_eq!(code.subclass(), "001");

let code: SqlState = "23505".parse().unwrap();
assert_eq!(code.class(), SqlStateClass::INTEGRITY_CONSTRAINT_VIOLATION);

Implementations

impl SqlState

pub const fn new(code: [u8; 5]) -> Option<Self>

Returns None unless every byte is an ASCII digit or uppercase letter.

pub fn as_str(&self) -> &str

The five character code.

pub fn class(&self) -> SqlStateClass

The SqlStateClass, made of the first two characters.

pub fn subclass(&self) -> &str

The subclass, made of the last three characters, where 000 means none.

Trait Implementations

impl Clone for SqlState

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for SqlState

impl Debug for SqlState

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

Formats the value using the given formatter.

impl Display for SqlState

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

Formats the value using the given formatter.

impl Eq for SqlState

impl FromStr for SqlState

type Err = InvalidSqlState

The associated error which can be returned from parsing.

fn from_str(s: &str) -> Result<Self, Self::Err>

Parses a string s to return a value of this type.

impl Hash for SqlState

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Ord for SqlState

fn cmp(&self, other: &Self) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

fn clamp_to<R>(self, range: R) -> Self

where Self: Sized, R: ClampBounds<Self>,

🔬This is a nightly-only experimental API. (clamp_to)

Restrict a value to a certain range.

impl PartialEq for SqlState

fn eq(&self, other: &Self) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl PartialOrd for SqlState

fn partial_cmp(&self, other: &Self) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl StructuralPartialEq for SqlState