when<T> method
T?
when<T>({
- T notNull()?,
- T nullable()?,
- T primaryKey()?,
- T unique()?,
- T check()?,
- T isDefault()?,
- T collate()?,
- T foreignKey()?,
- T mappedBy()?,
- T generatedAs()?,
Implementation
T? when<T>({
T Function(NotNull)? notNull,
T Function(NullColumnConstraint)? nullable,
T Function(PrimaryKeyColumn)? primaryKey,
T Function(UniqueColumn)? unique,
T Function(CheckColumn)? check,
T Function(Default)? isDefault,
T Function(CollateConstraint)? collate,
T Function(ForeignKeyColumnConstraint)? foreignKey,
T Function(MappedBy)? mappedBy,
T Function(GeneratedAs)? generatedAs,
}) {
if (this is NotNull) {
return notNull?.call(this as NotNull);
} else if (this is NullColumnConstraint) {
return nullable?.call(this as NullColumnConstraint);
} else if (this is PrimaryKeyColumn) {
return primaryKey?.call(this as PrimaryKeyColumn);
} else if (this is UniqueColumn) {
return unique?.call(this as UniqueColumn);
} else if (this is CheckColumn) {
return check?.call(this as CheckColumn);
} else if (this is Default) {
return isDefault?.call(this as Default);
} else if (this is CollateConstraint) {
return collate?.call(this as CollateConstraint);
} else if (this is ForeignKeyColumnConstraint) {
return foreignKey?.call(this as ForeignKeyColumnConstraint);
} else if (this is MappedBy) {
return mappedBy?.call(this as MappedBy);
} else if (this is GeneratedAs) {
return generatedAs?.call(this as GeneratedAs);
} else {
throw Exception('Did not expect $runtimeType as a ColumnConstraint');
}
}