Struct SqliteDialect 

pub struct SqliteDialect;

SQLite JSON1 dialect.

Trait Implementations

impl Clone for SqliteDialect

fn clone(&self) -> SqliteDialect

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for SqliteDialect

impl Debug for SqliteDialect

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

Formats the value using the given formatter.

impl Default for SqliteDialect

fn default() -> SqliteDialect

Returns the “default value” for a type.

impl Dialect for SqliteDialect

fn name(&self) -> &'static str

Short identifier for diagnostics (“postgres”, “sqlite”).

fn placeholder(&self, idx: usize) -> String

Render a 1-based parameter placeholder ($1 for PG, ?1 for SQLite).

fn json_field(&self, base: &str, key: &str) -> String

base->'key' (returns JSON value).

fn json_field_text(&self, base: &str, key: &str) -> String

base->>'key' (returns text).

fn json_path(&self, base: &str, segments: &[&str]) -> String

Multi-key path returning a JSON value.

fn json_path_text(&self, base: &str, segments: &[&str]) -> String

Multi-key path returning text.

fn unnest_array(&self, expr: &str) -> String

Emit a lateral unnest source clause (e.g. jsonb_array_elements(<expr>) or json_each(<expr>)).

fn coalesce_array(&self, expr: &str) -> String

Emit <expr> IS NULL-safe wrapping for an array source — guards against jsonb_array_elements(NULL) / json_each(NULL) errors. Returns SQL that always yields a usable array (empty if missing).

fn json_type(&self, expr: &str) -> String

JSON type-of expression (jsonb_typeof(x) / json_type(x)), returning a lowercase string.

fn json_agg(&self, expr: &str) -> String

JSON aggregate (jsonb_agg(x) / json_group_array(x)).

fn string_agg(&self, expr: &str, sep_param: &str) -> String

String aggregate with separator (string_agg / group_concat).

fn bool_true(&self) -> &'static str

SQL boolean literal for true.

fn bool_false(&self) -> &'static str

SQL boolean literal for false.

fn lateral_keyword(&self) -> &'static str

LATERAL keyword (PG) or empty (SQLite — uses correlated subqueries).

fn cast(&self, inner: &str, ty: SqlType) -> String

Cast inner to ty, returning a SQL expression.

fn has_json_type(&self, expr: &str, ty: JsonType) -> String

Predicate testing whether expr has the given JSON type.

fn truthy_predicate(&self, expr: &str) -> String

Boolean coercion at the WHERE-clause boundary — represents FHIRPath’s three-valued-logic rule that an empty / NULL operand filters the row out. The expression expr may be a text projection (PG ->>), a JSON value (PG ->), or a SQLite JSON1 extracted scalar; the dialect picks an appropriate form.

fn last_path_segment(&self, s: &str) -> String

Substring of s after the last / — used by getReferenceKey() to extract the id portion of a FHIR Reference.reference like Patient/123 (or http://server/path/Patient/123).