/// <summary>
/// Removes specified data object.
/// </summary>
/// <param name="context">ObjectContext object</param>
/// <param name="obj">Data object to remove</param>
/// <returns>
/// entity set name
/// </returns>
public static void RemoveObject(ObjectContext context,
DataObject obj)
{
Debug.Assert(context != null);
context.DeleteObject(DataObjectHelper.GetEntityObject(obj));
}
///////////////////////////////////////////////////////////////////////////////////////////
///////////////////////////////////////////////////////////////////////////////////////////
/// <summary>
/// Adds data object to object context.
/// </summary>
/// <param name="dataObject">
/// DataObject object to add.
/// </param>
protected void AddObject(DataObject dataObject)
{
Debug.Assert(dataObject != null);
// add entity object to context
_context.AddObject(_fullEntitySet, DataObjectHelper.GetEntityObject(
dataObject));
}
private bool _CanAddObject(TDataObject dataObject)
{
if (_filter == null)
{
return(true);
}
var entity = (TEntity)DataObjectHelper.GetEntityObject(dataObject);
return(_filter(entity));
}
/// <summary>
/// Removes data object from the collection.
/// </summary>
public virtual bool Remove(T dataObject)
{
if (dataObject == null)
{
throw new ArgumentNullException();
}
_CheckReadOnlyFlag();
return(_entities.Remove(DataObjectHelper.GetEntityObject(
dataObject) as TEntity));
}
/// <summary>
/// Adds data object to the collection.
/// </summary>
public virtual void Add(T dataObject)
{
if (dataObject == null)
{
throw new ArgumentNullException();
}
_CheckReadOnlyFlag();
_entities.Add(DataObjectHelper.GetEntityObject(
dataObject) as TEntity);
}
private void _SetValue(TDataObj dataObject)
{
TEntity entity = null;
if (dataObject != null)
{
entity = DataObjectHelper.GetEntityObject(dataObject) as TEntity;
if (entity == null)
{
throw new DataException(Properties.Messages.Error_InvalidDataObjectInstance);
}
}
_entityRef.Value = entity;
}
/// <summary>
/// Removes data object from object context.
/// </summary>
/// <param name="dataObject">
/// DataObject object to remove.
/// </param>
protected void RemoveObject(DataObject dataObject)
{
Debug.Assert(dataObject != null);
EntityObject entity = DataObjectHelper.GetEntityObject(
dataObject);
// remove data object from cache
// TODO: entity stays in context until SaveChanges is called,
// so alternatively we can sync. cache with context handling
// SavingChanges event.
//_context.Cache.RemoveObject(entity);
// remove entity object from context
_context.DeleteObject(entity);
}
///////////////////////////////////////////////////////////////////////////////////////////
///////////////////////////////////////////////////////////////////////////////////////////
public void AddObject(T dataObject)
{
EntityObject entity = DataObjectHelper.GetEntityObject(dataObject);
// check if entity already added
// entity could be implicitly added by setting a relation object
if (!_ContainsEntity(entity))
{
base.AddObject(dataObject);
}
else
{
// emulate Add event
_NotifyContextCollectionChanged(CollectionChangeAction.Add,
dataObject);
}
}
