Struct CollectedQuery

#[non_exhaustive]
pub struct CollectedQuery<T> { /* private fields */ }

Available on crate feature i-implement-a-third-party-backend-and-opt-into-breaking-changes only.

A SQL query variant with already collected bind data which can be moved

Implementations

impl<T> CollectedQuery<T>

pub fn new(sql: String, safe_to_cache_prepared: bool, bind_data: T) -> Self

Builds a CollectedQuery with movable bind data

Trait Implementations

impl<T: Debug> Debug for CollectedQuery<T>

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

Formats the value using the given formatter.

impl<T> Query for CollectedQuery<T>

type SqlType = Untyped

The SQL type that this query represents.

impl<DB, T> QueryFragment<DB> for CollectedQuery<T>

where DB: Backend + DieselReserveSpecialization, for<'a> <DB as Backend>::BindCollector<'a>: MoveableBindCollector<DB, BindData = T>,

fn walk_ast<'b>(&'b self, pass: AstPass<'_, 'b, DB>) -> QueryResult<()>

Walk over this QueryFragment for all passes.

fn to_sql(&self, out: &mut DB::QueryBuilder, backend: &DB) -> QueryResult<()>

Available on crate feature i-implement-a-third-party-backend-and-opt-into-breaking-changes only.

Converts this QueryFragment to its SQL representation.

fn collect_binds<'b>( &'b self, out: &mut DB::BindCollector<'b>, metadata_lookup: &mut DB::MetadataLookup, backend: &'b DB, ) -> QueryResult<()>

Available on crate feature i-implement-a-third-party-backend-and-opt-into-breaking-changes only.

Serializes all bind parameters in this query.

fn is_safe_to_cache_prepared(&self, backend: &DB) -> QueryResult<bool>

Available on crate feature i-implement-a-third-party-backend-and-opt-into-breaking-changes only.

Is this query safe to store in the prepared statement cache?

fn is_noop(&self, backend: &DB) -> QueryResult<bool>

Available on crate feature i-implement-a-third-party-backend-and-opt-into-breaking-changes only.

Does walking this AST have any effect?

impl<T> QueryId for CollectedQuery<T>

const HAS_STATIC_QUERY_ID: bool = false

Can the SQL generated by Self be uniquely identified by its type?

type QueryId = ()

A type which uniquely represents Self in a SQL query.

fn query_id() -> Option<TypeId>

Returns the type id of Self::QueryId if Self::HAS_STATIC_QUERY_ID. Returns None otherwise.