/// <summary>
/// Load a model from an input stream
/// </summary>
/// <param name="inputStream">The stream to input from.</param>
/// <returns>A <see cref="Store"/> with the model loaded.</returns>
public Store Load(Stream inputStream)
{
List <string> unrecognizedNamespaces = null;
Stream namespaceStrippedStream = null;
Store store = null;
try
{
XmlReaderSettings readerSettings = new XmlReaderSettings();
ExtensionLoader extensionLoader = myExtensionLoader;
readerSettings.CloseInput = false;
Dictionary <string, ExtensionModelBinding> documentExtensions = null;
using (XmlReader reader = XmlReader.Create(inputStream, readerSettings))
{
reader.MoveToContent();
if (reader.NodeType == XmlNodeType.Element)
{
if (reader.MoveToFirstAttribute())
{
do
{
if (reader.Prefix == "xmlns")
{
string URI = reader.Value;
if (!string.Equals(URI, ORMCoreDomainModel.XmlNamespace, StringComparison.Ordinal) &&
!string.Equals(URI, ORMShapeDomainModel.XmlNamespace, StringComparison.Ordinal) &&
!string.Equals(URI, ORMSerializationEngine.RootXmlNamespace, StringComparison.Ordinal))
{
ExtensionModelBinding?extensionType = extensionLoader.GetExtensionDomainModel(URI);
if (extensionType.HasValue)
{
if (documentExtensions == null)
{
documentExtensions = new Dictionary <string, ExtensionModelBinding>();
}
documentExtensions[URI] = extensionType.Value;
}
else
{
(unrecognizedNamespaces ?? (unrecognizedNamespaces = new List <string>())).Add(URI);
}
}
}
} while (reader.MoveToNextAttribute());
}
}
}
extensionLoader.VerifyRequiredExtensions(ref documentExtensions);
if (unrecognizedNamespaces != null)
{
inputStream.Position = 0;
namespaceStrippedStream = ExtensionLoader.CleanupStream(inputStream, extensionLoader.StandardDomainModels, documentExtensions.Values, unrecognizedNamespaces);
if (namespaceStrippedStream != null)
{
inputStream = namespaceStrippedStream;
}
else
{
unrecognizedNamespaces = null;
}
}
inputStream.Position = 0;
store = CreateStore();
store.UndoManager.UndoState = UndoState.Disabled;
store.LoadDomainModels(extensionLoader.GetRequiredDomainModels(documentExtensions));
try
{
ModelingEventManager eventManager = ModelingEventManager.GetModelingEventManager(store);
using (Transaction t = store.TransactionManager.BeginTransaction("File load and fixup"))
{
foreach (IModelingEventSubscriber subscriber in Utility.EnumerateDomainModels <IModelingEventSubscriber>(store.DomainModels))
{
subscriber.ManageModelingEventHandlers(eventManager, EventSubscriberReasons.DocumentLoading | EventSubscriberReasons.ModelStateEvents, EventHandlerAction.Add);
}
if (inputStream.Length > 1)
{
(new ORMSerializationEngine(store)).Load(inputStream);
}
t.Commit();
}
foreach (IModelingEventSubscriber subscriber in Utility.EnumerateDomainModels <IModelingEventSubscriber>(store.DomainModels))
{
subscriber.ManageModelingEventHandlers(eventManager, EventSubscriberReasons.DocumentLoaded | EventSubscriberReasons.ModelStateEvents, EventHandlerAction.Add);
}
store.UndoManager.UndoState = UndoState.Enabled;
}
catch (TypeInitializationException ex)
{
// If the type that failed to load is an extensions, then remove it from
// the list of available extensions and try again.
if (documentExtensions != null)
{
string typeName = ex.TypeName;
foreach (KeyValuePair <string, ExtensionModelBinding> pair in documentExtensions)
{
Type testType = pair.Value.Type;
if (testType.FullName == typeName)
{
if (extensionLoader.CustomExtensionUnavailable(testType))
{
return(Load(inputStream));
}
break;
}
}
}
throw;
}
}
finally
{
if (namespaceStrippedStream != null)
{
namespaceStrippedStream.Dispose();
}
}
return(store);
}