public void Insert(TRealmObject item) // 0
{
var listaItem = _currentRealm.All <TRealmObject>().ToList(); // 1
var contadorId = 0; // 2
if (listaItem.Count != 0) // 3
{
contadorId = listaItem.Max(r => r.ID);
}
item.ID = contadorId + 1; // 4
_currentRealm.Write(() => // 5
_currentRealm.Add(item));
/*
* 0 - Objeto genérico que receberá o objeto do banco local.
* 1 - Lista de itens armazenada no banco local.
* 2 - Variável contador de IDs iniciada com zero.
* 3 - Se lista de itens NÃO for zero, então retorna o maior
* valor da lista da propriedade ID e salva na variável contador
* 4 - ID recebe o valor do contado + 1.
* 5 - O objeto é salvo no banco local.
*/
}
public void AddOrUpdate <T>(IEnumerable <T> items) where T : RealmObject
{
if (items.Count() == 0)
{
return;
}
ConfigureInstance();
_realm.Write(() =>
{
foreach (var item in items)
{
_realm.Add <T>(item, true);
}
});
}
public App(params INinjectModule[] patformModules)
{
InitializeComponent();
var mainPage = new NavigationPage(new MainPage());
// setup and get an instance to our current Realm
CurrentRealm = Realms.Realm.GetInstance(new RealmConfiguration
{
SchemaVersion = RealmConfigure.SchemaVersion,
MigrationCallback = RealmConfigure.MigrationCallback,
});
CurrentRealm.Write(() =>
{
CurrentRealm.RemoveAll();
});
// Register all the our core services with the kernal
Kernal = new StandardKernel(new CoreModule(), new NavigationModule(mainPage.Navigation));
// Register all of our platform specific modules with the kernal
Kernal.Load(patformModules);
mainPage.BindingContext = Kernal.Get <MainViewModel>();
MainPage = mainPage;
}
/// <summary>
/// Writes the specified action.
/// This preforms a realm transaction.
/// If an exception occurs during the write then the transaction is disposed of and is never commited.
/// </summary>
/// <param name="writeAction">The action to preform to write.</param>
/// <exception cref="System.ArgumentNullException">writeAction</exception>
public void Write([NotNull] Action writeAction)
{
if (writeAction == null)
{
throw new ArgumentNullException(nameof(writeAction));
}
_currentRealm.Write(writeAction);
}
internal IEnumerable <BookInfo> GetBookInfo()
{
realm.Write(() =>
{
for (int i = 0; i < BookNames.Count(); i++)
{
var book = new BookInfo()
{
BookName = BookNames[i],
BookDescription = BookDescriptions[i],
BookAuthor = BookAuthers[i],
};
realm.Add(book);
}
});
return(realm.All <BookInfo>().AsRealmCollection());
}