Enum Dialect 

pub enum Dialect {
    Sqlite,
    Postgres,
}

Which dialect is on the other end of a connection.

Reached through Database::dialect. Only two things ever branch on it: the identifier search in order.rs, whose JSON functions have no shared spelling, and is_unique_violation_on.

Variants

Sqlite

Postgres

Implementations

impl Dialect

pub fn json_array_source(self, column: &str) -> String

The FROM fragment that walks the JSON array in column, aliased ident.

orders.identifiers is a JSON array of {type, value} objects and the operator listing matches a name inside it. Neither dialect indexes that, so it is a scan either way — defensible on an operator-driven listing over a retention-swept table, and the reason this is three words of dialect rather than two whole queries.

pub fn json_member(self, member: &str) -> String

The element’s value member, as text, from the alias above.

pub fn substring_position(self) -> &'static str

haystack, needle substring search returning a 1-based position.

Deliberately not PostgreSQL’s position(needle in haystack): it takes its arguments the other way round, so the two dialects would bind in different orders from one push_bind sequence. strpos matches instr’s order, which is what keeps the caller dialect-free.

Trait Implementations

impl Clone for Dialect

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 Dialect

impl Debug for Dialect

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

Formats the value using the given formatter.

impl Eq for Dialect

impl PartialEq for Dialect

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Dialect