439 lines
11 KiB
C++
439 lines
11 KiB
C++
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//
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// Copyright (c) 1997-2001 Microsoft Corporation, All Rights Reserved
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//
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// ***************************************************************************
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//
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// Original Author: Rajesh Rao
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//
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// $Author: rajeshr $
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// $Date: 6/11/98 4:43p $
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// $Workfile:classfac.cpp $
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//
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// $Modtime: 6/11/98 11:21a $
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// $Revision: 1 $
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// $Nokeywords: $
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//
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//
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// Description: Contains the implementation of the DS Class Provider factory.
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// Currently it always creates the LDAP CLass Provider. It remains to be decided as to how this can
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// be changed
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//
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//***************************************************************************
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#include "precomp.h"
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// Initializer objects required by the classes used by the DLL
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CDSClassProviderInitializer *CDSClassProviderClassFactory::s_pDSClassProviderInitializer = NULL;
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CLDAPClassProviderInitializer *CDSClassProviderClassFactory::s_pLDAPClassProviderInitializer = NULL;
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//***************************************************************************
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//
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// CDSClassProviderClassFactory::CDSClassProviderClassFactory
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// CDSClassProviderClassFactory::~CDSClassProviderClassFactory
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//
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// Constructor Parameters:
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// None
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//***************************************************************************
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CDSClassProviderClassFactory :: CDSClassProviderClassFactory ()
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{
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m_ReferenceCount = 0 ;
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InterlockedIncrement(&g_lComponents);
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}
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CDSClassProviderClassFactory::~CDSClassProviderClassFactory ()
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{
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InterlockedDecrement(&g_lComponents);
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}
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//***************************************************************************
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//
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// CDSClassProviderClassFactory::QueryInterface
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// CDSClassProviderClassFactory::AddRef
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// CDSClassProviderClassFactory::Release
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//
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// Purpose: Standard COM routines needed for all interfaces
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//
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//***************************************************************************
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STDMETHODIMP CDSClassProviderClassFactory::QueryInterface (
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REFIID iid ,
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LPVOID FAR *iplpv
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)
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{
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*iplpv = NULL ;
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if ( iid == IID_IUnknown )
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{
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*iplpv = ( LPVOID ) this ;
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}
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else if ( iid == IID_IClassFactory )
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{
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*iplpv = ( LPVOID ) this ;
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}
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else
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{
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return E_NOINTERFACE;
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}
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( ( LPUNKNOWN ) *iplpv )->AddRef () ;
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return S_OK;
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}
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STDMETHODIMP_( ULONG ) CDSClassProviderClassFactory :: AddRef ()
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{
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return InterlockedIncrement ( & m_ReferenceCount ) ;
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}
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STDMETHODIMP_(ULONG) CDSClassProviderClassFactory :: Release ()
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{
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LONG ref ;
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if ( ( ref = InterlockedDecrement ( & m_ReferenceCount ) ) == 0 )
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{
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delete this ;
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return 0 ;
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}
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else
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{
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return ref ;
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}
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}
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//***************************************************************************
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//
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// CDSClassProviderClassFactory::CreateInstance
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//
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// Purpose: Instantiates a Provider object returning an interface pointer.
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//
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// Parameters:
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// pUnkOuter LPUNKNOWN to the controlling IUnknown if we are
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// being used in an aggregation.
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// riid REFIID identifying the interface the caller
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// desires to have for the new object.
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// ppvObj PPVOID in which to store the desired
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// interface pointer for the new object.
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//
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// Return Value:
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// HRESULT NOERROR if successful, otherwise E_NOINTERFACE
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// if we cannot support the requested interface.
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//***************************************************************************
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STDMETHODIMP CDSClassProviderClassFactory :: CreateInstance (
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LPUNKNOWN pUnkOuter ,
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REFIID riid ,
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LPVOID FAR * ppvObject
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)
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{
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HRESULT status = S_OK ;
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// We do not support aggregation
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if ( pUnkOuter )
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{
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status = CLASS_E_NOAGGREGATION ;
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}
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else
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{
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// Check to see if the static members have been initialized
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// Create any initializer objects required for the classes
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EnterCriticalSection(&g_StaticsCreationDeletion);
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if(!s_pDSClassProviderInitializer)
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{
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BOOL bLogObjectAllocated = FALSE;
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try
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{
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// Th Log Object might have been created by the CreateInstance() function for the other
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// providers (Instance/ Class Association)
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if( !g_pLogObject )
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{
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g_pLogObject = new ProvDebugLog(DSPROVIDER);
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bLogObjectAllocated = TRUE;
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}
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g_pLogObject->WriteW(L"CDSClassProviderClassFactory::CreateInstance() called\r\n");
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s_pDSClassProviderInitializer = new CDSClassProviderInitializer();
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s_pLDAPClassProviderInitializer = new CLDAPClassProviderInitializer();
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}
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catch(Heap_Exception e_HE)
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{
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if ( bLogObjectAllocated && g_pLogObject )
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{
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delete g_pLogObject;
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g_pLogObject = NULL;
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}
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if ( s_pDSClassProviderInitializer )
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{
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delete s_pDSClassProviderInitializer;
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s_pDSClassProviderInitializer = NULL;
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}
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if ( s_pLDAPClassProviderInitializer )
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{
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delete s_pLDAPClassProviderInitializer;
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s_pLDAPClassProviderInitializer = NULL;
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}
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status = E_OUTOFMEMORY ;
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}
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}
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LeaveCriticalSection(&g_StaticsCreationDeletion);
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if(SUCCEEDED(status))
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{
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CLDAPClassProvider *lpunk = NULL;
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try
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{
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lpunk = new CLDAPClassProvider();
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status = lpunk->QueryInterface ( riid , ppvObject ) ;
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if ( FAILED ( status ) )
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{
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delete lpunk ;
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}
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}
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catch(Heap_Exception e_HE)
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{
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if ( lpunk )
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{
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delete lpunk ;
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lpunk = NULL;
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}
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status = E_OUTOFMEMORY ;
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}
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}
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}
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return status ;
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}
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//***************************************************************************
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//
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// CDSClassProviderClassFactory::LockServer
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//
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// Purpose:
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// Increments or decrements the lock count of the DLL. If the
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// lock count goes to zero and there are no objects, the DLL
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// is allowed to unload. See DllCanUnloadNow.
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//
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// Parameters:
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// fLock BOOL specifying whether to increment or
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// decrement the lock count.
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//
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// Return Value:
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// HRESULT NOERROR always.
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//***************************************************************************
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STDMETHODIMP CDSClassProviderClassFactory :: LockServer ( BOOL fLock )
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{
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if ( fLock )
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{
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InterlockedIncrement ( & g_lServerLocks ) ;
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}
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else
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{
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InterlockedDecrement ( & g_lServerLocks ) ;
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}
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return S_OK ;
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}
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//***************************************************************************
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//
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// CDSClassAssociationsProviderClassFactory::CDSClassAssociationsProviderClassFactory
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// CDSClassAssociationsProviderClassFactory::~CDSClassAssociationsProviderClassFactory
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//
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// Constructor Parameters:
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// None
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//***************************************************************************
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CDSClassAssociationsProviderClassFactory :: CDSClassAssociationsProviderClassFactory ()
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{
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m_ReferenceCount = 0 ;
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InterlockedIncrement(&g_lComponents);
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}
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CDSClassAssociationsProviderClassFactory::~CDSClassAssociationsProviderClassFactory ()
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{
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InterlockedDecrement(&g_lComponents);
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}
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//***************************************************************************
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//
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// CDSClassAssociationsProviderClassFactory::QueryInterface
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// CDSClassAssociationsProviderClassFactory::AddRef
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// CDSClassAssociationsProviderClassFactory::Release
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//
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// Purpose: Standard COM routines needed for all interfaces
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//
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//***************************************************************************
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STDMETHODIMP CDSClassAssociationsProviderClassFactory::QueryInterface (
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REFIID iid ,
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LPVOID FAR *iplpv
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)
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{
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*iplpv = NULL ;
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if ( iid == IID_IUnknown )
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{
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*iplpv = ( LPVOID ) this ;
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}
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else if ( iid == IID_IClassFactory )
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{
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*iplpv = ( LPVOID ) this ;
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}
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else
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{
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return E_NOINTERFACE;
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}
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( ( LPUNKNOWN ) *iplpv )->AddRef () ;
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return S_OK;
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}
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STDMETHODIMP_( ULONG ) CDSClassAssociationsProviderClassFactory :: AddRef ()
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{
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return InterlockedIncrement ( & m_ReferenceCount ) ;
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}
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STDMETHODIMP_(ULONG) CDSClassAssociationsProviderClassFactory :: Release ()
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{
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LONG ref ;
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if ( ( ref = InterlockedDecrement ( & m_ReferenceCount ) ) == 0 )
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{
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delete this ;
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return 0 ;
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}
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else
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{
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return ref ;
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}
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}
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//***************************************************************************
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//
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// CDSClassAssociationsProviderClassFactory::CreateInstance
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//
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// Purpose: Instantiates a Provider object returning an interface pointer.
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//
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// Parameters:
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// pUnkOuter LPUNKNOWN to the controlling IUnknown if we are
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// being used in an aggregation.
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// riid REFIID identifying the interface the caller
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// desires to have for the new object.
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// ppvObj PPVOID in which to store the desired
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// interface pointer for the new object.
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//
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// Return Value:
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// HRESULT NOERROR if successful, otherwise E_NOINTERFACE
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// if we cannot support the requested interface.
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//***************************************************************************
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STDMETHODIMP CDSClassAssociationsProviderClassFactory :: CreateInstance (
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LPUNKNOWN pUnkOuter ,
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REFIID riid ,
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LPVOID FAR * ppvObject
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)
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{
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HRESULT status = S_OK ;
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// We do not support aggregation
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if ( pUnkOuter )
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{
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status = CLASS_E_NOAGGREGATION ;
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}
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else
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{
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CLDAPClassAsssociationsProvider *lpunk = NULL;
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// Check to see if the static members have been initialized
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// Create any initializer objects required for the classes
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EnterCriticalSection(&g_StaticsCreationDeletion);
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BOOL bLogObjectAllocated = FALSE;
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try
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{
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// This might have been created by the CreateInstance() function of the
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// other DS Providers (Class, ClassAssociation)
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if( !g_pLogObject )
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{
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g_pLogObject = new ProvDebugLog(DSPROVIDER);
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bLogObjectAllocated = TRUE;
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}
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g_pLogObject->WriteW(L"CDSClassAssociationsProviderClassFactory::CreateInstance() called\r\n");
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lpunk = new CLDAPClassAsssociationsProvider();
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status = lpunk->QueryInterface ( riid , ppvObject ) ;
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if ( FAILED ( status ) )
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{
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delete lpunk ;
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}
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}
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catch(Heap_Exception e_HE)
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{
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if ( bLogObjectAllocated && g_pLogObject )
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{
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delete g_pLogObject;
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g_pLogObject = NULL;
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}
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if ( lpunk )
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{
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delete lpunk;
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lpunk = NULL;
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}
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status = E_OUTOFMEMORY ;
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}
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LeaveCriticalSection(&g_StaticsCreationDeletion);
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}
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return status ;
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}
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//***************************************************************************
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//
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// CDSClassAssociationsProviderClassFactory::LockServer
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//
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// Purpose:
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|
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// Increments or decrements the lock count of the DLL. If the
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||
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// lock count goes to zero and there are no objects, the DLL
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||
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// is allowed to unload. See DllCanUnloadNow.
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||
|
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//
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||
|
|
// Parameters:
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||
|
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// fLock BOOL specifying whether to increment or
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||
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// decrement the lock count.
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||
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//
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// Return Value:
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// HRESULT NOERROR always.
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//***************************************************************************
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STDMETHODIMP CDSClassAssociationsProviderClassFactory :: LockServer ( BOOL fLock )
|
||
|
|
{
|
||
|
|
if ( fLock )
|
||
|
|
{
|
||
|
|
InterlockedIncrement ( & g_lServerLocks ) ;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
InterlockedDecrement ( & g_lServerLocks ) ;
|
||
|
|
}
|
||
|
|
|
||
|
|
return S_OK ;
|
||
|
|
}
|
||
|
|
|