persistence

Trying to store an array of dictionaries with NSUserDefaults . var theTasks: [[String:Any]] = [["num":1,"title":"example","colour":"red"]] let defaults = NSUserDefaults.standardUserDefaults() defaults.setObject(theTasks, forKey: "myTasks") defaults.synchronize() let selected = theTasks[1] Gives error: Cannot convert value of type '[[String:Any]]' to expected argument of type 'AnyObject?' Swift 3.x In Swift 3 it has changed so now it needs to be saved as [Any] Any Array and use UserDefaults array(forKey:) method to load it: let theTasks: [Any] = [["num": 1, "title": "example", "colour": "red"]]

I have employee and employee detail classes mapped (bi directional) using primary key join column (employee_id) @Entity @Table(name="employee") public class Employee { @Id @GeneratedValue @Column(name="employee_id") private Long employeeId; @Column(name="firstname") private String firstname; @Column(name="lastname") private String lastname; @Column(name="birth_date") @Temporal(value = TemporalType.DATE ) private Date birthDate; @Column(name="cell_phone") private String cellphone; @OneToOne(mappedBy="empl", cascade=CascadeType.ALL) private EmployeeDetail employeeDetail; ... } @Table(name=

@Description: I have data already exists at some endpoint(friends_list) so this is my reference : https://xxxxxx.firebaseio.com/friends_list Now, I have enabled disk persistence i.e., i am allowed to cache the data as well as using the below code: [FIRDatabase database].persistenceEnabled = YES; Now, I have loaded the application and I have cached the data to disk by using the following code: FIRDatabaseReference *globalRef = [[FIRDatabase database] reference]; FIRDatabaseReference *ref = [globalRef child:@"friends_list"]; [ref keepSynced:YES]; //here comes : other stuff for listeners

This question already has an answer here: NHibernate.MappingException: No persister for: XYZ 15 answers Well, I googled a lot, and found the same advices all there (set hbm as Embedded Resource, add hbm at hibernate.cfg, etc..), and despite of them, I still not get it. Let me explain: I wrote a Communication Dll for a ticket gate device, and there I have a configuration model class, that I use to configure that device through TCP/IP. But now, I have to persist this object on DB, so I wrote an Adapter inside my model which glues one into another. This way, I have an Adapter for my configuration

I use a managedBean that goes into the db and defines the bean properties with db data. However when I update the db the data I receive in my bean is not updated. The query in db is like this: private static final String JPQL_FIND_BY_ID = "SELECT c FROM Category c WHERE c.idcategory=:id"; @Override public Category findCatById(int id) { Query query = em.createQuery(JPQL_FIND_BY_ID, Category.class); query.setParameter("id", id); Category cat = null; try { cat = (Category) query.getSingleResult(); } catch (Exception e) { e.printStackTrace(); } return cat; } The managed bean I use to get the

As stated in the title, I am using the Firebase Realtime Database, with persistence enabled . As stated in the guide, By enabling persistence, any data that the Firebase Realtime Database client would sync while online persists to disk and is available offline, even when the user or operating system restarts the app. This means your app works as it would online by using the local data stored in the cache. Listener callbacks will continue to fire for local updates . While this happens with the ValueEventListeners and every read listener, I can't find a way to make it work with write operations

I have entities A and B, and A can have set of B. The same instance of B can belong to several A. So there is classical many-to-many relation here. In GAE there is no direct support of many-to-many relations, instead they're offering an ability to use sets of keys for related relations. So in A I will maintain set of keys of records in B. Now the problem is - how can I query for objects of type B belonging to given object of type A and matching certain criteria? In plain SQL I would do that like: select B.* from B inner join A on B.A_ID=A.ID where B.property0=criteria1 and B.property1

i have a php page, on that page i have text boxes and a submit button, this button runs php in a section: if(isset($_POST['Add'])){code} This works fine here and in that section $name,$base,$location etc are calculated and used. but that section of code generates another submit button that drives another section of code. it is in this second section of code that i wish to add data to the DB. Now i already know how to do this, the problem is that the variables $name and so forth have a value of NULL at this point.. but they can only be called after the first code section has been run where they