implementing mongoose managers

backend/model/ObjectManagerRepository.ts

@@ -0,0 +1,47 @@
+import {IUserManager} from "./IUserManager";
+import {IGalleryManager} from "./IGalleryManager";
+import {MongoGalleryManager} from "./mongoose/MongoGalleryManager";
+import {MongoUserManager} from "./mongoose/MongoUserManager";
+import {GalleryManager} from "./memory/GalleryManager";
+import {UserManager} from "./memory/UserManager";
+
+export class ObjectManagerRepository{
+    
+    private _galleryManager:IGalleryManager;
+    private _userManager:IUserManager;
+    private static _instance:ObjectManagerRepository = null;
+
+    public static InitMongoManagers(){
+        ObjectManagerRepository.getInstance().setGalleryManager(new MongoGalleryManager());
+        ObjectManagerRepository.getInstance().setUserManager(new MongoUserManager());
+    }
+
+    public static MemoryMongoManagers(){
+        ObjectManagerRepository.getInstance().setGalleryManager(new GalleryManager());
+        ObjectManagerRepository.getInstance().setUserManager(new UserManager());
+    }
+    
+    public static getInstance(){
+        if(this._instance === null){
+            this._instance = new ObjectManagerRepository();
+        }
+        return this._instance;
+    }
+
+
+    getGalleryManager():IGalleryManager {
+        return this._galleryManager;
+    }
+
+    setGalleryManager(value:IGalleryManager) {
+        this._galleryManager = value;
+    }
+
+    getUserManager():IUserManager {
+        return this._userManager;
+    }
+
+    setUserManager(value:IUserManager) {
+        this._userManager = value;
+    }
+}