/// <summary>
/// Performs an insert operation on the list of data that the <see cref="DataSourceView"/> object represents.
/// </summary>
/// <param name="values">An <see cref="IDictionary"/> of name/value pairs used during an insert operation.</param>
/// <returns>The number of items that were inserted into the underlying data storage.</returns>
protected override int ExecuteInsert(IDictionary values)
{
Guard.ArgumentNotNull(values, "values");
ObjectContainerDataSourceInsertingEventArgs insertingEventArgs = new ObjectContainerDataSourceInsertingEventArgs(values);
OnInserting(insertingEventArgs);
if (insertingEventArgs.Cancel)
{
return(0);
}
object instance = CreateInstance();
TypeDescriptionHelper.BuildInstance(values, instance);
Add(instance);
OnDataSourceViewChanged(EventArgs.Empty);
int rowsAffected = 1;
ObjectContainerDataSourceStatusEventArgs insertedEventArgs = new ObjectContainerDataSourceStatusEventArgs(instance, rowsAffected);
OnInserted(insertedEventArgs);
return(rowsAffected);
}
public void BuildInstanceThrowsIfPropertyIsUnexistant()
{
OrderedDictionary values = new OrderedDictionary(1);
values.Add("Unexistant", "unexistant");
TypeDescriptionHelper.BuildInstance(values, new SimpleEntity());
}
public void BuildInstanceThrowsIfPropertyIsReadOnly()
{
OrderedDictionary values = new OrderedDictionary(1);
values.Add("Name", "name");
TypeDescriptionHelper.BuildInstance(values, new SimpleEntityWithReadOnlyProperty());
}
public void BuildInstance()
{
SimpleEntity simpleEntity = new SimpleEntity();
OrderedDictionary values = new OrderedDictionary(3);
values.Add("Id", 1);
values.Add("Name", "name");
values.Add("Age", 10);
TypeDescriptionHelper.BuildInstance(values, simpleEntity);
Assert.AreEqual(1, simpleEntity.Id);
Assert.AreEqual("name", simpleEntity.Name);
Assert.AreEqual(10, simpleEntity.Age);
}
/// <summary>
/// Performs an update operation on the list of data that the <see cref="DataSourceView"/> object represents.
/// </summary>
/// <param name="keys">An <see cref="System.Collections.IDictionary"/> of object or row keys to be updated by the update operation.</param>
/// <param name="values">An <see cref="System.Collections.IDictionary"/> of name/value pairs that represent data elements and their new values.</param>
/// <param name="oldValues">An <see cref="System.Collections.IDictionary"/> of name/value pairs that represent data elements and their original values.</param>
/// <returns>The number of items that were updated in the underlying data storage.</returns>
protected override int ExecuteUpdate(IDictionary keys, IDictionary values, IDictionary oldValues)
{
Guard.CollectionNotNullNorEmpty(keys, String.Format(CultureInfo.CurrentCulture, Resources.NoKeysSpecified), "keys");
Guard.ArgumentNotNull(values, "values");
ObjectContainerDataSourceUpdatingEventArgs updatingEventArgs =
new ObjectContainerDataSourceUpdatingEventArgs(DictionaryHelper.GetReadOnlyDictionary(keys), values, oldValues);
OnUpdating(updatingEventArgs);
if (updatingEventArgs.Cancel)
{
return(0);
}
object newInstance = CreateInstance();
TypeDescriptionHelper.BuildInstance(keys, newInstance);
TypeDescriptionHelper.BuildInstance(values, newInstance);
int rowsAffected;
object oldInstance = FindInstance(keys);
if (oldInstance != null)
{
int index = Data.IndexOf(oldInstance);
Data[index] = newInstance;
rowsAffected = 1;
}
else
{
rowsAffected = 0;
}
OnDataSourceViewChanged(EventArgs.Empty);
ObjectContainerDataSourceStatusEventArgs updatedEventArgs = new ObjectContainerDataSourceStatusEventArgs(newInstance, rowsAffected);
OnUpdated(updatedEventArgs);
return(rowsAffected);
}
/// <summary>
/// Performs a delete operation on the list of data that the <see cref="DataSourceView"/> object represents.
/// </summary>
/// <param name="keys">An <see cref="IDictionary"/> of object or row keys to be deleted by
/// the <see cref="DataSourceView.ExecuteDelete(System.Collections.IDictionary,System.Collections.IDictionary)"/>
/// operation.</param>
/// <param name="oldValues">An <see cref="System.Collections.IDictionary"/> of name/value pairs that represent data elements and their original values.</param>
/// <returns>The number of items that were deleted from the underlying data storage.</returns>
protected override int ExecuteDelete(IDictionary keys, IDictionary oldValues)
{
Guard.CollectionNotNullNorEmpty(keys, String.Format(CultureInfo.CurrentCulture, Resources.NoKeysSpecified), "keys");
ObjectContainerDataSourceDeletingEventArgs deletingEventArgs =
new ObjectContainerDataSourceDeletingEventArgs(DictionaryHelper.GetReadOnlyDictionary(keys), oldValues);
OnDeleting(deletingEventArgs);
if (deletingEventArgs.Cancel)
{
return(0);
}
int rowsAffected;
object instance = FindInstance(keys);
if (instance == null)
{
rowsAffected = 0;
}
else
{
Data.Remove(instance);
rowsAffected = 1;
}
instance = CreateInstance();
TypeDescriptionHelper.BuildInstance(oldValues, instance);
TypeDescriptionHelper.BuildInstance(keys, instance);
OnDataSourceViewChanged(EventArgs.Empty);
ObjectContainerDataSourceStatusEventArgs deletedEventArgs = new ObjectContainerDataSourceStatusEventArgs(instance, rowsAffected);
OnDeleted(deletedEventArgs);
return(rowsAffected);
}
public void BuildInstanceThrowsIfExistingIsNull()
{
TypeDescriptionHelper.BuildInstance(new OrderedDictionary(), null);
}
public void BuildInstanceThrowsIfValuesIsNull()
{
TypeDescriptionHelper.BuildInstance(null, new SimpleEntity());
}
