public void DropSessionObject(Schema.CatalogObject objectValue)
{
ServerSession session = Sessions.GetSession(objectValue.SessionID);
lock (session.SessionObjects)
{
int objectIndex = session.SessionObjects.IndexOf(objectValue.SessionObjectName);
if ((objectIndex >= 0) && (((Schema.SessionObject)session.SessionObjects[objectIndex]).GlobalName == objectValue.Name))
{
session.SessionObjects.RemoveAt(objectIndex);
}
}
}
protected bool _firstRun; // Indicates whether or not this is the first time this server has run on the configured store
/*
* Catalog Startup ->
* Catalog startup occurs in 5 phases
* Bootstrap ->
* Creates the SystemUser and CatalogDevice, then connects the SystemSession and opens a device session with the catalog device
* Core ->
* Creates the core catalog objects required to compile D4 statements. These objects are programmatically created by the
* server and include the Admin user, User role, Temp device, ApplicationTransaction device and the Server-level rights.
* Base ->
* These are the basic objects required to facilitate caching and D4 compilation. These objects are created by running
* the DataTypes.d4 script, and include the majority of the system data types. All the objects created up to this phase
* constitute the base objects that will always be present in any given instance of a Dataphor Server, and are used as
* the default set of cached objects.
* System ->
* The system objects are all the remaining objects in the System library, and are created by running the SystemCatalog.d4
* script. These objects are only created on a first-time run for a given catalog store.
* Load ->
* The load phase finishes preparing the server to compile and run D4 statements by restoring server state.
*/
private void InitializeCatalog()
{
LogMessage("Initializing Catalog...");
// Create the Catalog device
// Note that this must be the first object created to avoid the ID being different on subsequent loads
Schema.Object.SetNextObjectID(0);
_catalogDevice = CreateCatalogDevice();
// Create the system user
_systemUser = new Schema.User(SystemUserID, "System User", String.Empty);
// Create the system library
_systemLibrary = new Schema.LoadedLibrary(SystemLibraryName);
_systemLibrary.Owner = _systemUser;
LoadSystemAssemblies();
_catalog.LoadedLibraries.Add(_systemLibrary);
// Load available libraries
LoadAvailableLibraries();
// Connect the System Session
if (_systemSession != null)
{
_systemSession.Dispose();
_systemProcess = null;
}
_systemSession = (ServerSession)InternalConnect(SystemSessionID, new SessionInfo(_systemUser.ID, _systemUser.Password, SystemLibraryName));
_systemSession.SessionInfo.UsePlanCache = false;
_systemProcess = (ServerProcess)((IServerSession)_systemSession).StartProcess(new ProcessInfo(_systemSession.SessionInfo));
_systemProcess.SuppressWarnings = true;
// Register the Catalog device
_catalogDevice.Owner = _systemUser;
_catalogDevice.Library = _systemLibrary;
_catalogDevice.ClassDefinition = new ClassDefinition("System.CatalogDevice");
_catalogDevice.Start(_systemProcess);
_catalogDevice.Register(_systemProcess);
_firstRun = DetermineFirstRun();
// If this is a repository or there are no objects in the catalog, register, else resolve
InternalInitializeCatalog();
// Bind the native type references to the system data types
BindNativeTypes();
LogMessage("Catalog Initialized.");
}
public void DropSessionOperator(Schema.Operator operatorValue)
{
if (!Catalog.OperatorMaps.ContainsName(operatorValue.OperatorName))
{
ServerSession session = Sessions.GetSession(operatorValue.SessionID);
lock (session.SessionOperators)
{
int operatorIndex = session.SessionOperators.IndexOf(operatorValue.SessionObjectName);
if ((operatorIndex >= 0) && (((Schema.SessionObject)session.SessionOperators[operatorIndex]).GlobalName == operatorValue.OperatorName))
{
session.SessionOperators.RemoveAt(operatorIndex);
}
}
}
}
private void InternalStop()
{
try
{
try
{
try
{
try
{
if (_planCache != null)
{
_planCache.Clear(_systemProcess);
_planCache = null;
}
}
finally
{
StopDevices();
}
}
finally
{
CloseSessions();
}
}
finally
{
_systemSession = null;
_systemProcess = null;
if (_streamManager != null)
{
_streamManager.Dispose();
_streamManager = null;
}
}
}
finally
{
UninitializeAvailableLibraries();
}
}
private ServerSession InternalConnect(int sessionID, SessionInfo sessionInfo)
{
Schema.User user = ValidateLogin(sessionID, sessionInfo);
ServerSession session = new ServerSession(this, sessionID, sessionInfo, user);
try
{
Schema.LoadedLibrary currentLibrary = null;
if (sessionInfo.DefaultLibraryName != String.Empty)
{
if (_systemProcess == null)
{
currentLibrary = _catalog.LoadedLibraries[sessionInfo.DefaultLibraryName];
}
else
{
currentLibrary = _systemProcess.CatalogDeviceSession.ResolveLoadedLibrary(sessionInfo.DefaultLibraryName, false);
}
}
if (currentLibrary == null)
{
currentLibrary = _catalog.LoadedLibraries[GeneralLibraryName];
}
session.CurrentLibrary = currentLibrary;
_sessions.Add(session);
return(session);
}
catch
{
session.Dispose();
throw;
}
}
private void InternalDisconnect(ServerSession session)
{
session.Dispose();
}
