CustomSelectStatement class
A select statement that is constructed with a raw sql prepared statement instead of the high-level drift api.
- Mixed-in types
Constructors
-
CustomSelectStatement(String query, List<
Variable< variables, Set<Object> >ResultSetImplementation> tables, DatabaseConnectionUser _db) - Constructs a new custom select statement for the query, the variables, the affected tables and the database.
Properties
- hashCode → int
-
The hash code for this object.
no setterinherited
- query → String
-
The sql query string for this statement.
final
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
-
tables
→ Set<
ResultSetImplementation> -
Tables this select statement reads from. When turning this select query
into an auto-updating stream, that stream will emit new items whenever
any of these tables changes.
final
-
variables
→ List<
Variable< Object> > -
The variables for the prepared statement, in the order they appear in
query. Variables are denoted using a question mark in the query.
final
Methods
-
asyncMap<
N> (FutureOr< N> mapper(QueryRow)) → Selectable<N> -
Maps this selectable by the
mapperfunction.inherited -
get(
) → Future< List< QueryRow> > -
Executes this statement and returns the result.
override
-
getSingle(
) → Future< QueryRow> -
Executes this statement, like Selectable.get, but only returns one
value. the query returns no or too many rows, the returned future will
complete with an error.
inherited
-
getSingleOrNull(
) → Future< QueryRow?> -
Executes this statement, like Selectable.get, but only returns one
value. If the result too many values, this method will throw. If no
row is returned,
nullwill be returned instead.inherited -
map<
N> (N mapper(QueryRow)) → Selectable< N> -
Maps this selectable by the
mapperfunction.inherited -
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a nonexistent method or property is accessed.
inherited
-
toString(
) → String -
A string representation of this object.
inherited
-
watch(
) → Stream< List< QueryRow> > -
Creates an auto-updating stream of the result that emits new items
whenever any table used in this statement changes.
override
-
watchSingle(
) → Stream< QueryRow> -
Creates an auto-updating stream of this statement, similar to
Selectable.watch. However, it is assumed that the query will only emit
one result, so instead of returning a
Stream<List<T>>, this returns aStream<T>. If, at any point, the query emits no or more than one rows, an error will be added to the stream instead.inherited -
watchSingleOrNull(
) → Stream< QueryRow?> -
Creates an auto-updating stream of this statement, similar to
Selectable.watch. However, it is assumed that the query will only
emit one result, so instead of returning a
Stream<List<T>>, this returns aStream<T?>. If the query emits more than one row at some point, an error will be emitted to the stream instead. If the query emits zero rows at some point,nullwill be added to the stream instead.inherited
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited