How to create a single store in objectbox flutter? - database

Question

Flutter database objectbox error - " Unsupported operation: Cannot create multiple Store instances for the same directory in the same isolate. Please use a single Store, close() the previous instance before opening another one or attach to it in another isolate ". I am using objectbox as my app database.How can I solve this problem. Here is my code -
// First File
import 'package:flutter/material.dart';
import 'package:provider/provider.dart';
import '../objectbox.g.dart';
#Entity()
class MarkEvent {
int? id;
int habitId;
String dateTime;
MarkEvent({required this.dateTime, required this.habitId, this.id = 0});
}
class HabitDetailProvider with ChangeNotifier {
List<MarkEvent> marks = [];
Future<void> deleteMark(int id) async {
final index = marks.indexWhere((element) => element.id == id);
marks.removeAt(index);
var store = await openStore();
var box = store.box<MarkEvent>();
box.remove(id);
store.close();
// await DataBaseHelper.deleteEvent(id);
notifyListeners();
}
Future<void> addMark(MarkEvent mark) async {
marks.add(MarkEvent(dateTime: mark.dateTime, habitId: mark.habitId));
var store = await openStore();
var box = store.box<MarkEvent>();
box.put(mark);
store.close();
notifyListeners();
}
Future<void> fetchAndSetMarks() async {
var store = await openStore();
var box = store.box<MarkEvent>();
final markList = box.query().build().find();
store.close();
marks = markList
.map((e) => MarkEvent(dateTime: e.dateTime, habitId: e.habitId))
.toList();
notifyListeners();
}
}
// Another file
import 'package:flutter/material.dart';
import 'package:habit_app/objectbox.g.dart';
import '../model/habit_model.dart';
class HabitListNotifier with ChangeNotifier {
List<HabitModel> _habitList = [];
List<HabitModel> get Habit_List {
return [..._habitList];
}
Future<Store> get originalStore {
return openStore();
}
void addHabit(HabitModel habit) async {
HabitModel newHabit = HabitModel(
hour: habit.hour,
minutes: habit.minutes,
reminderHour: habit.reminderHour,
reminderMinute: habit.reminderMinute,
alarmId: habit.alarmId,
notificationText: habit.notificationText,
reason: habit.reason,
notificationId: habit.notificationId,
iconData: habit.iconData.toString(),
title: habit.title,
plan: habit.plan,
);
_habitList.add(newHabit);
var store = await originalStore;
var box = store.box<HabitModel>();
box.put(habit);
store.close();
notifyListeners();
}
void updateHabit(HabitModel newHabit) async {
final oldHabitIndex =
_habitList.indexWhere((habit) => habit.id == newHabit.id);
_habitList[oldHabitIndex] = newHabit;
var store = await originalStore;
var box = store.box<HabitModel>();
box.put(newHabit);
store.close();
notifyListeners();
}
Future<void> fetchAndSetHabits() async {
var store = await originalStore;
var box = store.box<HabitModel>();
var query = box.query().build();
_habitList = query.find();
store.close();
notifyListeners();
}
Future<void> deleteHabit(int id) async {
final existingHabit = _habitList.indexWhere((element) => element.id == id);
_habitList.removeAt(existingHabit);
var store = await originalStore;
var box = store.box<HabitModel>();
box.remove(id);
store.close();
notifyListeners();
}
}
// Another file
import 'package:flutter/material.dart';
import 'package:habit_app/providers/habit_provider.dart';
import 'package:provider/provider.dart';
import '../objectbox.g.dart';
class NoteModel {
int habitId;
int? id;
String dateTime;
String note;
NoteModel(
{required this.dateTime,
required this.habitId,
this.id = 0,
required this.note});
}
class Notes with ChangeNotifier {
List<NoteModel> notes = [];
List<NoteModel> get dupNoteList {
return notes;
}
Future<void> addNote(
NoteModel note, int habitId, BuildContext context) async {
notes.add(note);
var store = await Provider.of<HabitListNotifier>(context, listen: false)
.originalStore;
var box = store.box<NoteModel>();
box.put(note);
store.close();
fetchAndSetNotes(habitId);
notifyListeners();
}
Future<void> deleteNote(int id) async {
final index = notes.indexWhere((element) => element.id == id);
notes.removeAt(index);
var store = await openStore();
var box = store.box<NoteModel>();
box.remove(id);
store.close();
notifyListeners();
}
Future<void> updateNote(NoteModel newNote) async {
var store = await openStore();
var box = store.box<NoteModel>();
box.put(newNote);
store.close();
final oldNote = notes.indexWhere((habit) => habit.id == newNote.id);
notes[oldNote] = newNote;
notifyListeners();
}
Future<void> fetchAndSetNotes(int habitId) async {
var store = await openStore();
var box = store.box<NoteModel>();
var query = box.query().build();
final note = query.find();
store.close();
notes = note.where((notes) => notes.habitId == habitId).toList();
notifyListeners();
}
}
//Models file
import 'package:objectbox/objectbox.dart';
#Entity()
class NoteModel {
String habitId;
int? id;
String dateTime;
String note;
NoteModel({
required this.dateTime,
required this.habitId,
required this.note,
this.id = 0,
});
}
import 'dart:core';
import 'package:objectbox/objectbox.dart';
class ClockTime {
int? id;
int hour;
int minutes;
ClockTime(this.hour, this.minutes);
}
#Entity()
class HabitModel {
String title;
String reason;
String plan;
String iconData;
int? id;
int alarmId;
int notificationId;
String notificationText;
int hour;
int reminderHour;
int reminderMinute;
int minutes;
HabitModel({
required this.reason,
required this.notificationText,
required this.reminderHour,
required this.reminderMinute,
required this.notificationId,
required this.plan,
required this.alarmId,
required this.iconData,
required this.title,
this.id = 0,
required this.hour,
required this.minutes,
});
}