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 setter, inherited

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

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