private void ApplyResponseToDescriptor(DescriptorData descriptor, HttpResponseData response)
{
var entityDescriptor = descriptor as EntityDescriptorData;
var streamDescriptor = descriptor as StreamDescriptorData;
if (entityDescriptor != null)
{
if (entityDescriptor.IsMediaLinkEntry && entityDescriptor.DefaultStreamState == EntityStates.Modified)
{
// in this case (and only this case), the response headers apply to the stream itself
entityDescriptor.DefaultStreamDescriptor.UpdateFromHeaders(response.Headers);
}
else
{
entityDescriptor.UpdateFromHeaders(response.Headers);
}
if (response.StatusCode != HttpStatusCode.NoContent)
{
var entityInstance = response.DeserializeAndCast <EntityInstance>(this.parent.FormatSelector);
entityDescriptor.UpdateFromPayload(entityInstance, this.contextData.BaseUri);
}
if (entityDescriptor.IsMediaLinkEntry && entityDescriptor.DefaultStreamState != EntityStates.Unchanged)
{
this.VerifyStreamClosed(entityDescriptor.DefaultStreamDescriptor);
}
}
else
{
if (streamDescriptor != null)
{
streamDescriptor.UpdateFromHeaders(response.Headers);
this.VerifyStreamClosed(streamDescriptor);
}
else
{
ExceptionUtilities.Assert(descriptor is LinkDescriptorData, "Descriptor is of unexpected type '{0}'", descriptor.GetType());
}
}
}
private void UpdateDescriptorState(DescriptorData descriptor)
{
var entityDescriptor = descriptor as EntityDescriptorData;
var streamDescriptor = descriptor as StreamDescriptorData;
if (entityDescriptor != null)
{
var initialState = entityDescriptor.State;
if (entityDescriptor.State == EntityStates.Deleted)
{
this.contextData.RemoveDescriptorData(entityDescriptor);
foreach (var link in this.contextData.LinkDescriptorsData.Where(l => l.SourceDescriptor == entityDescriptor || l.TargetDescriptor == entityDescriptor).ToList())
{
this.contextData.RemoveDescriptorData(link);
}
}
else
{
if (entityDescriptor.State == EntityStates.Added)
{
this.contextData.LinkDescriptorsData
.Where(l => l.SourceDescriptor == entityDescriptor && l.State != EntityStates.Deleted && l.TargetDescriptor.State != EntityStates.Added)
.ForEach(l => l.State = EntityStates.Unchanged);
if (entityDescriptor.ParentForInsert != null)
{
var parentLink = this.contextData.LinkDescriptorsData
.SingleOrDefault(l => l.SourceDescriptor.Entity == entityDescriptor.ParentForInsert &&
l.SourcePropertyName == entityDescriptor.ParentPropertyForInsert &&
l.TargetDescriptor == descriptor);
ExceptionUtilities.CheckObjectNotNull(parentLink, "Could not find parent link descriptor for entity descriptor: '{0}'", entityDescriptor);
ExceptionUtilities.Assert(parentLink.State == EntityStates.Added, "Parent link for entity descriptor '{0}' was not in the added state", entityDescriptor);
parentLink.State = EntityStates.Unchanged;
}
entityDescriptor.InsertLink = null;
entityDescriptor.ParentForInsert = null;
entityDescriptor.ParentPropertyForInsert = null;
}
entityDescriptor.State = EntityStates.Unchanged;
}
if (entityDescriptor.IsMediaLinkEntry)
{
if (entityDescriptor.DefaultStreamState == EntityStates.Added)
{
// the stream insert should always leave the entity in modified state, so that the properties are updated
entityDescriptor.State = EntityStates.Modified;
}
else if (entityDescriptor.DefaultStreamState == EntityStates.Modified)
{
// if the stream was being updated, the entity's state should not have changed
entityDescriptor.State = initialState;
}
entityDescriptor.DefaultStreamState = EntityStates.Unchanged;
}
}
else
{
if (streamDescriptor == null)
{
ExceptionUtilities.CheckObjectNotNull(descriptor as LinkDescriptorData, "Descriptor is of unexpected type '{0}'", descriptor.GetType());
}
if (descriptor.State == EntityStates.Deleted)
{
this.contextData.RemoveDescriptorData(descriptor);
}
else
{
descriptor.State = EntityStates.Unchanged;
}
}
}