146 lines
3.3 KiB
C++
146 lines
3.3 KiB
C++
///////////////////////////////////////////////////////////////////////////////
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//
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// Copyright (c) 1998, Microsoft Corp. All rights reserved.
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//
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// FILE
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//
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// oledbstore.cpp
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//
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// SYNOPSIS
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//
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// This file defines the class OleDBDataStore.
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//
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// MODIFICATION HISTORY
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//
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// 02/20/1998 Original version.
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// 03/17/1999 Create TMP dir before calling IDBInitialize::Initialize.
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// 05/05/1999 Disable row-level locking.
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// 05/25/1999 Check version when connecting.
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// 01/25/2000 Increase MAX_VERSION to 1.
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// 05/30/2000 Convert to iasdb API.
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//
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///////////////////////////////////////////////////////////////////////////////
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#include <ias.h>
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#include <iasdb.h>
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#include <iasutil.h>
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#include <dsobject.h>
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#include <oledbstore.h>
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#include <propset.h>
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#include <msjetoledb.h>
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#include <oledberr.h>
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//////////
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// Current versions supported.
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//////////
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const LONG MIN_VERSION = IAS_WIN2K_VERSION;
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const LONG MAX_VERSION = IAS_WHISTLER_BETA2_VERSION;
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STDMETHODIMP OleDBDataStore::get_Root(IDataStoreObject** ppObject)
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{
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if (ppObject == NULL) { return E_INVALIDARG; }
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if (*ppObject = root) { (*ppObject)->AddRef(); }
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return S_OK;
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}
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STDMETHODIMP OleDBDataStore::Initialize(BSTR bstrDSName,
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BSTR bstrUserName,
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BSTR bstrPassword)
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{
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// Are we already initialized?
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if (root != NULL) { HRESULT_FROM_WIN32(ERROR_ALREADY_INITIALIZED); }
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// Open the database.
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HRESULT hr = IASOpenJetDatabase(bstrDSName, FALSE, &session);
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if (FAILED(hr)) { return hr; }
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//////////
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// Check the version.
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//////////
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LONG version;
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hr = IASExecuteSQLFunction(
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session,
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L"SELECT Version FROM Version",
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&version
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);
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// If the table doesn't exist, then version is zero.
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if (hr == DB_E_NOTABLE)
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{
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version = 0;
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}
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else if (FAILED(hr))
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{
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return hr;
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}
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// Is it out of bounds?
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if (version < MIN_VERSION || version > MAX_VERSION)
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{
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return HRESULT_FROM_WIN32(ERROR_REVISION_MISMATCH);
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}
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try
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{
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//////////
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// Initialize all the command objects.
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//////////
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members.initialize(session);
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create.initialize(session);
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destroy.initialize(session);
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find.initialize(session);
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update.initialize(session);
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erase.initialize(session);
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get.initialize(session);
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set.initialize(session);
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// Create the root object.
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root = DBObject::createInstance(this, NULL, 1, L"top");
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}
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CATCH_AND_RETURN()
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return S_OK;
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}
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STDMETHODIMP OleDBDataStore::OpenObject(BSTR bstrPath,
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IDataStoreObject** ppObject)
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{
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return E_NOTIMPL;
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}
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STDMETHODIMP OleDBDataStore::Shutdown()
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{
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//////////
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// Release the root.
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//////////
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root.Release();
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//////////
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// Finalize the commands.
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//////////
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set.finalize();
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get.finalize();
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erase.finalize();
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update.finalize();
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find.finalize();
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destroy.finalize();
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create.finalize();
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members.finalize();
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//////////
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// Release the data source connection.
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//////////
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session.Release();
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return S_OK;
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}
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