DialectAwareSqlType<T extends Object> class abstract interface

A CustomSqlType with access on the dialect of the database engine when used in queries.

This can be used to design drift types providing polyfills for types only supported on some databases, for instance by using native DATE support on postgres but falling back to a textual representation on sqlite3.

Constructors

DialectAwareSqlType.via({required BaseSqlType<T> fallback, required Map<SqlDialect, BaseSqlType<T>> overrides})
Creates a DialectAwareSqlType that uses the fallback type by default, but can apply overrides on some database systems.
const
factory

Properties

hashCode → int
The hash code for this object.
no setterinherited
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited

Methods

mapToSqlLiteral(GenerationContext context, T dartValue) → String
Maps the dartValue to a SQL snippet that can be embedded as a literal into SQL queries generated by drift.
mapToSqlParameter(GenerationContext context, T dartValue) → Object
Maps the dartValue to a value understood by the underlying database driver.
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
read(SqlTypes typeSystem, Object fromSql) → T
Interprets the underlying fromSql value from the database driver into the Dart representation T of this type.
sqlTypeName(GenerationContext context) → String
Returns a suitable representation of this type in SQL.
inherited
toString() → String
A string representation of this object.
inherited

Operators

operator ==(Object other) → bool
The equality operator.
inherited