Select Join two table Header Detail Floor Orm in Flutter - flutter

Question

I try to select two table header and detail use join select.
and what object/list return value from query ?
I used Floor ORM in flutter, but when I generate not success
these my class model and Dao
flutter pub run build_runner build
[INFO] Running build...
[INFO] 1.0s elapsed, 0/2 actions completed.
[INFO] 2.1s elapsed, 0/2 actions completed.
[INFO] 8.4s elapsed, 0/2 actions completed.
[SEVERE] floor_generator:floor_generator on lib/database/Database.dart:
ERORR
Can not define return type
package:myapp_sfaf/database/dao/SalesOrderDao.dart:35:16
╷
35 │ Future<List> getListHeaderDetailByIdHso(String idHso);
│ ^^^^^^^^^^^^^^^^^^^^^^^^^^
╵
[INFO] Running build completed, took 8.8s
[INFO] Caching finalized dependency graph...
[INFO] Caching finalized dependency graph completed, took 59ms
[SEVERE] Failed after 8.8s
pub finished with exit code 1
class SalesOrderHd.dart
import 'package:floor/floor.dart';
import 'package:myapp_sfaf/database/entity/Customer.dart';
import 'package:myapp_sfaf/database/entity/Salesman.dart';
#Entity(tableName: 'thd_so',
indices: [Index(value: ['docCode'],unique: true)],
foreignKeys: [
ForeignKey(
childColumns: ['idCust'],
parentColumns: ['custId'],
entity: Customer,
onDelete: ForeignKeyAction.restrict
),
ForeignKey(
childColumns: ['idSals'],
parentColumns: ['idSalesman'],
entity: Salesman,
onDelete: ForeignKeyAction.restrict
)
]
)
class SalesOrderHd {
#primaryKey
final String idHso;
final String custCode;
final String custName;
final String address;
final String docCode;
SalesOrderHd(
this.idHso, this.custCode, this.custName, this.address, this.docCode
);
}
class SalesOrderDt.dart
import 'package:floor/floor.dart';
import 'package:myapp_sfaf/database/entity/ProductItem.dart';
import 'package:myapp_sfaf/database/entity/SalesOrderHd.dart';
#Entity(tableName: 'tdd_so')
class SalesOrderDt {
#primaryKey
final String id;
final String docCode;
final String itemCode;
final String itemName;
SalesOrderDt(
this.id,this.docCode, this.itemCode, this.itemName
);
}
SalesOrderDao.dart
#dao
abstract class SalesOrderDao {
#Query('SELECT hd.custName,hd.address, dt.itemCode, dt.itemName FROM thd_so hd
left join tdd_so dt WHERE hd.docCode = dt.docCode AND hd.idHso = :idHso')
Future<List> getListHeaderDetailByIdHso(String idHso);
}
whether the Query is wrong or because the return value is not written by me,
I want the return value of the query to be a List Object Model.
thank you for your help,

Answer 1

problem solved i use #DatabaseView.
i make one class .dart file
#DatabaseView('SELECT thd_so.custName, thd_so.address, tdd_so.itemCode,
tdd_so.itemName FROM thd_so, tdd_so
WHERE thd_so.docCode == tdd_so.docCode ',
viewName: 'myJoinedObject')
class MyJoinedObject{
String custName;
String address;
String itemCode;
String itemName;
MyJoinedObject(this.custName, this.address, this.itemCode,
this.itemName);
}
in Dao file
#Query('SELECT * FROM MyJoinedObject')
Stream<List<MyJoinedObject?>> getStreamedStuff();
used
getStreamedStuff(){
Stream<List<MyJoinedObject?>> list =
_salesOrderRepository.getStreamedStuff();
list.forEach((element) {
print('${element.elementAt(0)!.itemCode}');
print('CustName nya ${element.elementAt(0)!.custName}');
);
}
);
}