private void detach_PurchaseOrderDetails(PurchaseOrderDetail entity)
{
this.SendPropertyChanging();
entity.Product = null;
}
partial void UpdatePurchaseOrderDetail(PurchaseOrderDetail instance);
partial void DeletePurchaseOrderDetail(PurchaseOrderDetail instance);
private void attach_PurchaseOrderDetails(PurchaseOrderDetail entity)
{
this.SendPropertyChanging();
entity.PurchaseOrder = this;
}
partial void InsertPurchaseOrderDetail(PurchaseOrderDetail instance);
public void TestEntityCaching_NewEntities()
{
CatalogEntityContainer container = new CatalogEntityContainer();
// add two orders and a detail
PurchaseOrder order1 = new PurchaseOrder();
PurchaseOrder order2 = new PurchaseOrder();
PurchaseOrderDetail detail = new PurchaseOrderDetail();
container.GetEntitySet<PurchaseOrder>().Add(order1);
container.GetEntitySet<PurchaseOrder>().Add(order2);
container.GetEntitySet<PurchaseOrderDetail>().Add(detail);
// examine the order ref of the detail - ensure that
// no result is returned, since a FK query would match
// BOTH orders
Assert.IsNull(detail.PurchaseOrder);
// now that we've cached a null, make sure that if more
// new entities are added, the ref doesn't change
container.GetEntitySet<PurchaseOrder>().Add(new PurchaseOrder());
Assert.IsNull(detail.PurchaseOrder);
// now assign order1, and remove order2 - make sure that our
// ref to order1 remains
detail.PurchaseOrder = order1;
Assert.AreSame(order1, detail.PurchaseOrder);
container.GetEntitySet<PurchaseOrder>().Remove(order2);
Assert.AreSame(order1, detail.PurchaseOrder);
container.GetEntitySet<PurchaseOrder>().Remove(order1);
Assert.IsNull(detail.PurchaseOrder);
}
public void TestEntityRefCaching_Detach()
{
CatalogEntityContainer container = new CatalogEntityContainer();
PurchaseOrderDetail detail = new PurchaseOrderDetail
{
PurchaseOrderDetailID = 1,
PurchaseOrderID = 1
};
PurchaseOrder order = new PurchaseOrder
{
PurchaseOrderID = 1
};
container.LoadEntities(new Entity[] { order, detail });
Assert.AreSame(order, detail.PurchaseOrder);
// now detach the detail and verify that the
// cached entity is still returned
container.GetEntitySet<PurchaseOrderDetail>().Detach(detail);
Assert.AreSame(order, detail.PurchaseOrder);
}
public void TestEntityRefCaching() {
CatalogEntityContainer container = new CatalogEntityContainer();
PurchaseOrderDetail detail = new PurchaseOrderDetail {
PurchaseOrderDetailID = 1,
PurchaseOrderID = 1
};
PurchaseOrder order = new PurchaseOrder {
PurchaseOrderID = 1
};
PurchaseOrder order2 = new PurchaseOrder {
PurchaseOrderID = 2
};
container.LoadEntities(new Entity[] { order, order2});
container.LoadEntities(new Entity[] { detail });
// force the EntityRef to cache
Assert.AreSame(order, detail.PurchaseOrder);
// clear the entity set to verify that the cached
// entity is cleared
EntitySet purchaseOrderSet = container.GetEntitySet<PurchaseOrder>();
purchaseOrderSet.Clear();
Assert.AreEqual(0, purchaseOrderSet.Count);
// after the set has been cleared, we expect null
Assert.IsNull(detail.PurchaseOrder);
// change the FK and verify that we requery again, getting no match
// since all orders have been cleared from the set
detail.PurchaseOrderID = 2;
Assert.AreSame(null, detail.PurchaseOrder);
// Reload the order entities and verify we get the
// correct order
container.LoadEntities(new Entity[] { order, order2 });
Assert.AreSame(order2, detail.PurchaseOrder);
// reset the FK and verify that we requery to get the
// right entity
detail.PurchaseOrderID = 1;
Assert.AreSame(order, detail.PurchaseOrder);
}
public void TestEntityCollectionCaching()
{
CatalogEntityContainer container = new CatalogEntityContainer();
PurchaseOrder order = new PurchaseOrder
{
PurchaseOrderID = 1
};
PurchaseOrderDetail detail1 = new PurchaseOrderDetail
{
PurchaseOrderID = 1, PurchaseOrderDetailID = 1
};
PurchaseOrderDetail detail2 = new PurchaseOrderDetail
{
PurchaseOrderID = 1, PurchaseOrderDetailID = 2
};
container.LoadEntities(new Entity[] { order, detail1, detail2 });
Assert.AreEqual(2, order.PurchaseOrderDetails.Count);
// now add a couple new details
PurchaseOrderDetail detail3 = new PurchaseOrderDetail();
PurchaseOrderDetail detail4 = new PurchaseOrderDetail();
order.PurchaseOrderDetails.Add(detail3);
order.PurchaseOrderDetails.Add(detail4);
Assert.AreEqual(4, order.PurchaseOrderDetails.Count);
// now modify the parent FK, which will cause the cached
// results to be reset, but we expect the explicitly added
// entities to be retained
// Here we're using ApplyState to allow us to set a PK member w/o validation failure
// since PK members cannot be changed. This test should really be based on an association
// not involving PK, but the test is still valid this way.
order.ApplyState(new Dictionary<string, object> { { "PurchaseOrderID", 2 } });
Assert.AreEqual(2, order.PurchaseOrderDetails.Count);
Assert.IsTrue(order.PurchaseOrderDetails.Contains(detail3));
Assert.IsTrue(order.PurchaseOrderDetails.Contains(detail4));
}
private bool FilterPurchaseOrderDetails(PurchaseOrderDetail entity)
{
return (entity.PurchaseOrderID == this.PurchaseOrderID);
}
private void DetachPurchaseOrderDetails(PurchaseOrderDetail entity)
{
entity.PurchaseOrder = null;
}
private void AttachPurchaseOrderDetails(PurchaseOrderDetail entity)
{
entity.PurchaseOrder = this;
}