protected static void LoadAssemblies(IEnumerable<Assembly> assemblies, ObjectItemLoadingSessionData sessionData)
{
foreach (Assembly assembly in assemblies)
{
ObjectItemAssemblyLoader loader = ObjectItemAssemblyLoader.CreateLoader(assembly, sessionData);
loader.Load();
}
}
public bool HaveSeenInCompatibleContext(object loaderCookie, EdmItemCollection itemCollection)
{
// a new "context" is only when we have not seen this assembly with an itemCollection that is non-null
// and we now have a non-null itemCollection, and we are not already in AttributeLoader mode.
return(SeenWithEdmItemCollection ||
itemCollection == null ||
ObjectItemAssemblyLoader.IsAttributeLoader(loaderCookie));
}
internal static void LoadAssembly(Assembly assembly, bool loadReferencedAssemblies,
KnownAssembliesSet knownAssemblies, EdmItemCollection edmItemCollection, Action <String> logLoadMessage, ref object loaderCookie, out Dictionary <string, EdmType> typesInLoading, out List <EdmItemError> errors)
{
Debug.Assert(loaderCookie == null || loaderCookie is Func <Assembly, ObjectItemLoadingSessionData, ObjectItemAssemblyLoader>, "This is a bad loader cookie");
typesInLoading = null;
errors = null;
using (LockedAssemblyCache lockedAssemblyCache = AssemblyCache.AquireLockedAssemblyCache())
{
ObjectItemLoadingSessionData loadingData = new ObjectItemLoadingSessionData(knownAssemblies, lockedAssemblyCache, edmItemCollection, logLoadMessage, loaderCookie);
LoadAssembly(assembly, loadReferencedAssemblies, loadingData);
loaderCookie = loadingData.LoaderCookie;
// resolve references to top level types (base types, navigation properties returns and associations, and complex type properties)
loadingData.CompleteSession();
if (loadingData.EdmItemErrors.Count == 0)
{
// do the validation for the all the new types
// Now, perform validation on all the new types
EdmValidator validator = new EdmValidator();
validator.SkipReadOnlyItems = true;
validator.Validate(loadingData.TypesInLoading.Values, loadingData.EdmItemErrors);
// Update the global cache if there are no errors
if (loadingData.EdmItemErrors.Count == 0)
{
if (ObjectItemAssemblyLoader.IsAttributeLoader(loadingData.ObjectItemAssemblyLoaderFactory))
{
// we only cache items from the attribute loader globally, the
// items loaded by convention will change depending on the cspace
// provided. cspace will have a cache of it's own for assemblies
UpdateCache(lockedAssemblyCache, loadingData.AssembliesLoaded);
}
else if (loadingData.EdmItemCollection != null &&
ObjectItemAssemblyLoader.IsConventionLoader(loadingData.ObjectItemAssemblyLoaderFactory))
{
UpdateCache(loadingData.EdmItemCollection, loadingData.AssembliesLoaded);
}
}
}
if (loadingData.TypesInLoading.Count > 0)
{
foreach (EdmType edmType in loadingData.TypesInLoading.Values)
{
edmType.SetReadOnly();
}
}
// Update the out parameters once you are done with loading
typesInLoading = loadingData.TypesInLoading;
errors = loadingData.EdmItemErrors;
}
}
private static void LoadAssembly(Assembly assembly, bool loadReferencedAssemblies, ObjectItemLoadingSessionData loadingData)
{
// Check if the assembly is already loaded
KnownAssemblyEntry entry;
bool shouldLoadReferences = false;
if (loadingData.KnownAssemblies.TryGetKnownAssembly(assembly, loadingData.ObjectItemAssemblyLoaderFactory, loadingData.EdmItemCollection, out entry))
{
shouldLoadReferences = !entry.ReferencedAssembliesAreLoaded && loadReferencedAssemblies;
}
else
{
ObjectItemAssemblyLoader loader = ObjectItemAssemblyLoader.CreateLoader(assembly, loadingData);
loader.Load();
shouldLoadReferences = loadReferencedAssemblies;
}
if (shouldLoadReferences)
{
if (entry == null && loadingData.KnownAssemblies.TryGetKnownAssembly(assembly, loadingData.ObjectItemAssemblyLoaderFactory, loadingData.EdmItemCollection, out entry) ||
entry != null)
{
entry.ReferencedAssembliesAreLoaded = true;
}
Debug.Assert(entry != null, "we should always have an entry, why don't we?");
// We will traverse through all the statically linked assemblies and their dependencies.
// Only assemblies with the EdmSchemaAttribute will be loaded and rest will be ignored
// Even if the schema attribute is missing, we should still check all the dependent assemblies
// any of the dependent assemblies can have the schema attribute
// After the given assembly has been loaded, check on the flag in _knownAssemblies to see if it has already
// been recursively loaded. The flag can be true if it was already loaded before this function was called
foreach (Assembly referencedAssembly in MetadataAssemblyHelper.GetNonSystemReferencedAssemblies(assembly))
{
// filter out "known" assemblies to prevent unnecessary loading
// recursive call
LoadAssembly(referencedAssembly, loadReferencedAssemblies, loadingData);
}
}
}
internal void RegisterForLevel2PostSessionProcessing(ObjectItemAssemblyLoader loader)
{
_loadersThatNeedLevel2PostSessionProcessing.Add(loader);
}
internal void RegisterForLevel2PostSessionProcessing(ObjectItemAssemblyLoader loader)
{
_loadersThatNeedLevel2PostSessionProcessing.Add(loader);
}
