// initializes a new scope
private Scope(ScopeProvider scopeProvider,
ILogger logger, FileSystems fileSystems, Scope parent, ScopeContext scopeContext, bool detachable,
IsolationLevel isolationLevel = IsolationLevel.Unspecified,
RepositoryCacheMode repositoryCacheMode = RepositoryCacheMode.Unspecified,
IEventDispatcher eventDispatcher = null,
bool?scopeFileSystems = null,
bool callContext = false,
bool autoComplete = false)
{
_scopeProvider = scopeProvider;
_logger = logger;
Context = scopeContext;
_isolationLevel = isolationLevel;
_repositoryCacheMode = repositoryCacheMode;
_eventDispatcher = eventDispatcher;
_scopeFileSystem = scopeFileSystems;
_callContext = callContext;
_autoComplete = autoComplete;
Detachable = detachable;
#if DEBUG_SCOPES
_scopeProvider.RegisterScope(this);
Console.WriteLine("create " + InstanceId.ToString("N").Substring(0, 8));
#endif
if (detachable)
{
if (parent != null)
{
throw new ArgumentException("Cannot set parent on detachable scope.", nameof(parent));
}
if (scopeContext != null)
{
throw new ArgumentException("Cannot set context on detachable scope.", nameof(scopeContext));
}
if (autoComplete)
{
throw new ArgumentException("Cannot auto-complete a detachable scope.", nameof(autoComplete));
}
// detachable creates its own scope context
Context = new ScopeContext();
// see note below
if (scopeFileSystems == true)
{
_fscope = fileSystems.Shadow();
}
return;
}
if (parent != null)
{
ParentScope = parent;
// cannot specify a different mode!
// TODO: means that it's OK to go from L2 to None for reading purposes, but writing would be BAD!
// this is for XmlStore that wants to bypass caches when rebuilding XML (same for NuCache)
if (repositoryCacheMode != RepositoryCacheMode.Unspecified && parent.RepositoryCacheMode > repositoryCacheMode)
{
throw new ArgumentException($"Value '{repositoryCacheMode}' cannot be lower than parent value '{parent.RepositoryCacheMode}'.", nameof(repositoryCacheMode));
}
// cannot specify a dispatcher!
if (_eventDispatcher != null)
{
throw new ArgumentException("Value cannot be specified on nested scope.", nameof(eventDispatcher));
}
// cannot specify a different fs scope!
// can be 'true' only on outer scope (and false does not make much sense)
if (scopeFileSystems != null && parent._scopeFileSystem != scopeFileSystems)
{
throw new ArgumentException($"Value '{scopeFileSystems.Value}' be different from parent value '{parent._scopeFileSystem}'.", nameof(scopeFileSystems));
}
}
else
{
// the FS scope cannot be "on demand" like the rest, because we would need to hook into
// every scoped FS to trigger the creation of shadow FS "on demand", and that would be
// pretty pointless since if scopeFileSystems is true, we *know* we want to shadow
if (scopeFileSystems == true)
{
_fscope = fileSystems.Shadow();
}
}
}