public IReadOnlyDictionary <PropertyInfo, ODataResourceSetBase> GetResourceSets(Object entity)
{
if (NavigationPropertyEntities.TryGetValue(entity, out Dictionary <PropertyInfo, ODataResourceSetBase> resourceSets))
{
return(resourceSets);
}
return(EmptyNavigationPropertyEntities);
}
protected Object CreateEntity(ODataResource resource, IReadOnlyList <NavigationProperty> navigationProperties)
{
Db.OeEntitySetAdapter entitySetAdapter = EntitySetAdapters.FindByTypeName(resource.TypeName);
Object entity = OeEdmClrHelper.CreateEntity(entitySetAdapter.EntityType, resource);
Dictionary <PropertyInfo, ODataResourceSetBase> propertyInfos = null;
foreach (NavigationProperty navigationProperty in navigationProperties)
{
PropertyInfo clrProperty = entitySetAdapter.EntityType.GetProperty(navigationProperty.Name);
Object value = navigationProperty.Value;
if (navigationProperty.ResourceSet == null || (navigationProperty.ResourceSet.Count == null && navigationProperty.ResourceSet.NextPageLink == null))
{
if (clrProperty.GetSetMethod() != null)
{
clrProperty.SetValue(entity, value);
}
continue;
}
if (value == null && navigationProperty.ResourceSet.NextPageLink != null)
{
value = CreateCollection(clrProperty.PropertyType);
}
clrProperty.SetValue(entity, value);
if (value is IEnumerable collection)
{
NavigationProperties.Add(collection, navigationProperty.ResourceSet);
if (propertyInfos == null)
{
propertyInfos = new Dictionary <PropertyInfo, ODataResourceSetBase>(navigationProperties.Count);
NavigationPropertyEntities.Add(entity, propertyInfos);
}
propertyInfos.Add(clrProperty, navigationProperty.ResourceSet);
}
}
return(entity);
}
protected IEnumerable ReadImpl(Stream response, Db.OeEntitySetMetaAdapter entitySetMetaAdatpter)
{
ResourceSet = null;
NavigationProperties.Clear();
NavigationPropertyEntities.Clear();
IODataResponseMessage responseMessage = new OeInMemoryMessage(response, null);
var settings = new ODataMessageReaderSettings()
{
EnableMessageStreamDisposal = false, Validations = ValidationKinds.None
};
var messageReader = new ODataMessageReader(responseMessage, settings, EdmModel);
IEdmEntitySet entitySet = EdmModel.EntityContainer.FindEntitySet(entitySetMetaAdatpter.EntitySetName);
ODataReader reader = messageReader.CreateODataResourceSetReader(entitySet, entitySet.EntityType());
var stack = new Stack <StackItem>();
while (reader.Read())
{
switch (reader.State)
{
case ODataReaderState.ResourceSetStart:
if (stack.Count == 0)
{
ResourceSet = (ODataResourceSetBase)reader.Item;
}
else
{
stack.Peek().ResourceSet = (ODataResourceSetBase)reader.Item;
}
break;
case ODataReaderState.ResourceStart:
stack.Push(new StackItem((ODataResource)reader.Item));
break;
case ODataReaderState.ResourceEnd:
StackItem stackItem = stack.Pop();
if (reader.Item != null)
{
if (stack.Count == 0)
{
yield return(CreateRootEntity((ODataResource)stackItem.Item, stackItem.NavigationProperties, entitySetMetaAdatpter.EntityType));
}
else
{
stack.Peek().AddEntry(CreateEntity((ODataResource)stackItem.Item, stackItem.NavigationProperties));
}
}
break;
case ODataReaderState.NestedResourceInfoStart:
stack.Push(new StackItem((ODataNestedResourceInfo)reader.Item));
break;
case ODataReaderState.NestedResourceInfoEnd:
StackItem item = stack.Pop();
stack.Peek().AddLink((ODataNestedResourceInfo)item.Item, item.Value, item.ResourceSet);
break;
}
}
}
