/// <summary>use location from header to generate initial edit and identity</summary>
/// <param name="entity">entity in added state</param>
/// <param name="identity">identity as specified in the response header - location header or OData-EntityId header.</param>
/// <param name="editLink">editlink as specified in the response header - location header.</param>
internal void AttachLocation(object entity, Uri identity, Uri editLink)
{
Debug.Assert(entity != null, "null != entity");
Debug.Assert(editLink != null, "editLink != null");
this.EnsureIdentityToResource();
// resource.State == EntityState.Added or Unchanged for second pass of media link
EntityDescriptor resource = this.entityDescriptors[entity];
// make sure we got the right one - server could override identity and we may be tracking another one already.
this.ValidateDuplicateIdentity(identity, resource);
this.DetachResourceIdentity(resource);
// While processing the response, we need to find out if the given resource was inserted deep
// If it was, then we need to change the link state from added to unchanged
if (resource.IsDeepInsert)
{
LinkDescriptor end = this.bindings[resource.GetRelatedEnd()];
end.State = EntityStates.Unchanged;
}
resource.Identity = identity; // always attach the identity
resource.EditLink = editLink;
// scenario: successfully batch (1) add a new entity and (2) delete an existing entity where the new entity has the same identity as deleted entity
// where the SaveChanges pass1 will now associate existing identity with new entity
// but pass2 for the deleted entity will not blindly remove the identity that is now associated with the new identity
this.identityToDescriptor[identity] = resource;
}
/// <summary>response materialization has an identity to attach to the inserted object</summary>
/// <param name="entityDescriptorFromMaterializer">entity descriptor containing all the information about the entity from the response.</param>
/// <param name="metadataMergeOption">mergeOption based on which EntityDescriptor will be merged.</param>
internal override void AttachIdentity(EntityDescriptor entityDescriptorFromMaterializer, MergeOption metadataMergeOption)
{ // insert->unchanged
Debug.Assert(entityDescriptorFromMaterializer != null, "entityDescriptorFromMaterializer != null");
this.EnsureIdentityToResource();
// resource.State == EntityState.Added or Unchanged for second pass of media link
EntityDescriptor trackedEntityDescriptor = this.entityDescriptors[entityDescriptorFromMaterializer.Entity];
// make sure we got the right one - server could override identity and we may be tracking another one already.
this.ValidateDuplicateIdentity(entityDescriptorFromMaterializer.Identity, trackedEntityDescriptor);
this.DetachResourceIdentity(trackedEntityDescriptor);
// While processing the response, we need to find out if the given resource was inserted deep
// If it was, then we need to change the link state from added to unchanged
if (trackedEntityDescriptor.IsDeepInsert)
{
LinkDescriptor end = this.bindings[trackedEntityDescriptor.GetRelatedEnd()];
end.State = EntityStates.Unchanged;
}
trackedEntityDescriptor.Identity = entityDescriptorFromMaterializer.Identity; // always attach the identity
AtomMaterializerLog.MergeEntityDescriptorInfo(trackedEntityDescriptor, entityDescriptorFromMaterializer, true /*mergeInfo*/, metadataMergeOption);
trackedEntityDescriptor.State = EntityStates.Unchanged;
trackedEntityDescriptor.PropertiesToSerialize.Clear();
// scenario: successfully (1) delete an existing entity and (2) add a new entity where the new entity has the same identity as deleted entity
// where the SaveChanges pass1 will now associate existing identity with new entity
// but pass2 for the deleted entity will not blindly remove the identity that is now associated with the new identity
this.identityToDescriptor[entityDescriptorFromMaterializer.Identity] = trackedEntityDescriptor;
}