public async Task Update_UpdateRecord_ValidateResult()
{
using (SqlXRepository repository = new SqlXRepository(_connectionString)) {
var newX = new EntityX {
Name = "Update1",
Price = 1
};
try {
await repository.CreateAsync(newX);
newX = await repository.ReadAsync(newX.Id);
newX.Name = "Update2";
newX.Price = 2;
await repository.UpdateAsync(newX);
var readX = await repository.ReadAsync(newX.Id);
Assert.AreEqual(newX.Name, readX.Name);
Assert.AreEqual(newX.Id, readX.Id);
Assert.AreEqual(newX.Price, readX.Price);
Assert.IsFalse(newX.RowVersion == readX.RowVersion);
} finally {
await repository.DeleteAsync(newX.Id);
}
}
}
public async Task Update_UpdateRecordParallelOptimistic_ValidateResult()
{
var newX = new EntityX {
Name = "Update1",
Price = 1
};
using (SqlXRepository repository1 = new SqlXRepository(_connectionString))
using (SqlXRepository repository2 = new SqlXRepository(_connectionString)) {
try {
await repository1.CreateAsync(newX);
//Read Item by 1-st user
newX = await repository1.ReadAsync(newX.Id);
//Read the same item by 2-nd user
var readX2 = await repository2.ReadAsync(newX.Id);
//Modify and save updated by first user
newX.Name = "Update2";
newX.Price = 2;
await repository1.UpdateAsync(newX);
//try to update the same record by 2-nd user
readX2.Name = "Update3";
readX2.Price = 3;
//update should fail here
try {
await repository2.UpdateAsync(readX2);
} catch (ConcurrencyException ex) {
Assert.IsTrue(ex.Message == "The value was already changed");
} catch {
Assert.Fail();
}
//the result should be from the 1-st user update
var readX = await repository1.ReadAsync(newX.Id);
Assert.AreEqual(newX.Name, readX.Name);
Assert.AreEqual(newX.Id, readX.Id);
Assert.AreEqual(newX.Price, readX.Price);
Assert.IsFalse(newX.RowVersion == readX.RowVersion);
} finally {
await repository1.DeleteAsync(newX.Id);
}
}
}
public async Task <ActionResult> Edit(EntityX model)
{
try {
using (SqlXRepository repository = new SqlXRepository()) {
try {
await repository.UpdateAsync(model).ConfigureAwait(false);
TempData["Message"] = $"{model.Name} updated successfully.";
} catch (ConcurrencyException ex) {
var merge = new MergeEntityX {
NewItem = model,
SavedItem = await repository.ReadAsync(model.Id),
};
return(View("EditMerge", merge));
} catch (Exception ex) {
TempData["Message"] = $"There was an error updating record: {model.Id}";
}
}
return(RedirectToAction("Index"));
} catch (Exception ex) {
TempData["Message"] = $"Cannot update {model.Name}.";
return(RedirectToAction("Index"));
}
}