--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/PECengine/StorageManager2/ServerSrc/CPEngStorageSubSession.cpp	Thu Dec 17 08:41:52 2009 +0200
@@ -0,0 +1,352 @@
+/*
+* Copyright (c) 2002 Nokia Corporation and/or its subsidiary(-ies). 
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of "Eclipse Public License v1.0"
+* which accompanies this distribution, and is available
+* at the URL "http://www.eclipse.org/legal/epl-v10.html".
+*
+* Initial Contributors:
+* Nokia Corporation - initial contribution.
+*
+* Contributors:
+*
+* Description:  Sub-session class of the Storage Server
+*
+*/
+
+
+
+// INCLUDE FILES
+#include    <e32std.h>
+#include	"CPEngStorageSubSession.h"
+#include	"PEngStorageServerCommon.h"
+
+#include	"CPEngStorageFolder.h"
+#include	"MPEngStorageServer.h"
+#include	"RPEngMessage.h"
+
+
+// ============================ MEMBER FUNCTIONS ===============================
+
+// -----------------------------------------------------------------------------
+// CPEngStorageSubSession::CPEngStorageSubSession
+// C++ default constructor can NOT contain any code, that might leave.
+// -----------------------------------------------------------------------------
+//
+CPEngStorageSubSession::CPEngStorageSubSession( TInt32 aSessionId )
+        : iBufferedNotif( 10 ), // 10 as value to grow array
+        iSessionId( aSessionId )
+    {
+    }
+
+
+// -----------------------------------------------------------------------------
+// CPEngStorageSubSession::ConstructL
+// Symbian 2nd phase constructor can leave.
+// -----------------------------------------------------------------------------
+//
+void CPEngStorageSubSession::ConstructL(
+    MPEngStorageServer& aServer,
+    const RPEngMessage& aMessage )
+    {
+    iStorageFolder = aServer.StorageFolderL( aMessage );
+    }
+
+
+// -----------------------------------------------------------------------------
+// CPEngStorageSubSession::NewL
+// Two-phased constructor.
+// -----------------------------------------------------------------------------
+//
+CPEngStorageSubSession* CPEngStorageSubSession::NewL(
+    MPEngStorageServer& aServer,
+    const RPEngMessage& aMessage,
+    TInt32 aSessionId )
+    {
+    CPEngStorageSubSession* self = NewLC( aServer, aMessage, aSessionId );
+
+    CleanupStack::Pop(); // self
+
+    return self;
+    }
+
+
+// -----------------------------------------------------------------------------
+// CPEngStorageSubSession::NewLC
+// Two-phased constructor.
+// -----------------------------------------------------------------------------
+//
+CPEngStorageSubSession* CPEngStorageSubSession::NewLC(
+    MPEngStorageServer& aServer,
+    const RPEngMessage& aMessage,
+    TInt32 aSessionId )
+    {
+    CPEngStorageSubSession* self = new( ELeave ) CPEngStorageSubSession( aSessionId );
+
+    CleanupClosePushL( *self );
+    self->ConstructL( aServer, aMessage );
+    return self;
+    }
+
+
+// Destructor
+CPEngStorageSubSession::~CPEngStorageSubSession()
+    {
+    iBufferedNotif.Reset();
+    // decrease count of the storage Folder
+    if ( iStorageFolder )
+        {
+        iStorageFolder->CancelSubSessionRequests( iSessionId, iHandle );
+        iStorageFolder->Close();
+        }
+    }
+
+
+
+// =============================================================================
+// =============== Functions from base class ===================================
+// =============================================================================
+
+
+// -----------------------------------------------------------------------------
+// CPEngStorageSubSession::DisplayName()
+// -----------------------------------------------------------------------------
+//
+TBool CPEngStorageSubSession::DispatchMessageL(
+    const RPEngMessage& aMessage,
+    TInt aRequest )
+    {
+    TBool completeMessage( ETrue );
+    switch ( aRequest )
+        {
+            /*********************************************************************/
+            /*  Asynchronous Requests Management                                 */
+            /*********************************************************************/
+
+            // Cancel Asynchronous request Request
+        case EFolderSubSessCancelRequest:
+            {
+            iStorageFolder->CancelRequest( aMessage,
+                                           iSessionId,
+                                           iHandle );
+            break;
+            }
+
+        // Reload Asynchronous Scout on the Server side
+        case EFolderSubSessReloadAsynchronousScout:
+            {
+            iStorageFolder->ReloadAsyncScoutL( aMessage,
+                                               iSessionId,
+                                               iHandle );
+            completeMessage = EFalse;
+            break;
+            }
+
+        /*********************************************************************/
+        /*  Store Entry management                                           */
+        /*********************************************************************/
+
+        // Write store entry
+        case EFolderSubSessWriteEntry:
+            {
+            const CPEngDataEntry* entry = iStorageFolder->WriteStoreEntryL(
+                                              aMessage,
+                                              !iBufferingActiveCounter,
+                                              iSessionId,
+                                              iHandle );
+            if ( entry )
+                {
+                TInt err( iBufferedNotif.InsertInAddressOrder( entry ) );
+                err = err == KErrAlreadyExists ? KErrNone : err;
+                User::LeaveIfError( err );
+                }
+            break;
+            }
+
+        // Read store Entry
+        case EFolderSubSessReadEntry:
+            {
+            iStorageFolder->ReadStoreEntryL( aMessage );
+            break;
+            }
+
+        // Get Entry size
+        case EFolderSubSessGetEntryLength:
+            {
+            iStorageFolder->GetStoreEntryLengthL( aMessage );
+            break;
+            }
+
+        // Remove Store entry from the storage
+        case EFolderSubSessRemoveEntry:
+            {
+            iStorageFolder->RemoveStoreEntryL( aMessage );
+            break;
+            }
+
+        // Lock Store Entry
+        case EFolderSubSessLockEntry:
+            {
+            iStorageFolder->LockStoreEntryL( aMessage,
+                                             iSessionId,
+                                             iHandle );
+            completeMessage = EFalse;
+            break;
+            }
+
+        // Unlock the Store entry
+        case EFolderSubSessUnlockEntry:
+            {
+            // check if it is needed to buffer notification
+            const CPEngDataEntry* entry =
+                iStorageFolder->UnlockStoreEntryL(
+                    aMessage,
+                    !iBufferingActiveCounter,
+                    iSessionId,
+                    iHandle );
+            if ( entry )
+                {
+                TInt err( iBufferedNotif.InsertInAddressOrder( entry ) );
+                err = err == KErrAlreadyExists ? KErrNone : err;
+                User::LeaveIfError( err );
+                }
+            completeMessage = EFalse;
+            break;
+            }
+
+        // Is Store entry locked
+        case EFolderSubSessIsEntryLocked:
+            {
+            iStorageFolder->IsStoreEntryLockedL( aMessage );
+            completeMessage = EFalse;
+            break;
+            }
+
+        // Suspend notification to the client
+        case EFolderSubSessSuspendNotification:
+            {
+            iBufferingActiveCounter += aMessage.Int0();
+            aMessage.Complete( iBufferingActiveCounter );
+            completeMessage = EFalse;
+            break;
+            }
+
+        // Resume notification to the client
+        case EFolderSubSessResumeNotification:
+            {
+            ResumeSIDsNotification( aMessage.Int0() );
+            aMessage.Complete( iBufferingActiveCounter );
+            completeMessage = EFalse;
+            break;
+            }
+
+        /*********************************************************************/
+        /*   Storage ID changes notify management                            */
+        /*********************************************************************/
+
+        // Synchronous Request to register for notification
+        case EFolderSubSessListenSIDsChanges:
+            {
+            iStorageFolder->ListenSIDsChangesL( aMessage,
+                                                iSessionId,
+                                                iHandle );
+            break;
+            }
+
+        // Synchronous Request to update set of SIDs client
+        case EFolderSubSessUpdateListenSIDsScout:
+            {
+            iStorageFolder->UpdateListenSIDsScoutL( aMessage,
+                                                    iSessionId,
+                                                    iHandle );
+            break;
+            }
+
+        // Fetch indexes of changed SIds
+        case EFolderSubSessFetchChangedSIDsIndexes:
+            {
+            iStorageFolder->FetchChangedIdsIndexesL( aMessage,
+                                                     iSessionId,
+                                                     iHandle );
+            break;
+            }
+
+        // Synchronous Request to force notify Store Entry change
+        case EFolderSubSessNotifyChangedSIDs:
+            {
+            // check if it is needed to buffer notification
+            const CPEngDataEntry* entry =
+                iStorageFolder->NotifyChangedStorageIdL(
+                    aMessage,
+                    !iBufferingActiveCounter );
+            if ( entry )
+                {
+                TInt err( iBufferedNotif.InsertInAddressOrder( entry ) );
+                err = err == KErrAlreadyExists ? KErrNone : err;
+                User::LeaveIfError( err );
+                }
+
+            break;
+            }
+
+        default:
+            {
+            PanicClient( aMessage, ESSBadRequest );
+            break;
+            }
+        }
+    // check if message can be completed
+    completeMessage &= aMessage.MessageValid();
+    return completeMessage;
+    }
+
+// -----------------------------------------------------------------------------
+// CPEngStorageSubSession::SetSubSesionHandle()
+// -----------------------------------------------------------------------------
+//
+void CPEngStorageSubSession::SetSubSesionHandle(
+    TInt aHandle )
+    {
+    iHandle = aHandle;
+    }
+
+
+// =============================================================================
+// =============== Private Functions from base class ===========================
+// =============================================================================
+
+// -----------------------------------------------------------------------------
+// CPEngStorageSubSession::PanicClient()
+// Panic client
+// (other items were commented in a header).
+// -----------------------------------------------------------------------------
+//
+void CPEngStorageSubSession::PanicClient(
+    const RPEngMessage& aMessage,
+    const TInt aPanic ) const
+    {
+    aMessage.Panic( KStorageSessionName, aPanic );
+    }
+
+
+// -----------------------------------------------------------------------------
+// CPEngStorageSubSession::ResumeSIDsNotificationL()
+// Resume Notification of the SIDs
+// (other items were commented in a header).
+// -----------------------------------------------------------------------------
+//
+void CPEngStorageSubSession::ResumeSIDsNotification(
+    TInt aCount )
+    {
+    iBufferingActiveCounter -= aCount;
+    if ( iBufferingActiveCounter <= KErrNone )
+        {
+        // notify buffered SIDs
+        iBufferingActiveCounter = KErrNone;
+        iStorageFolder->NotifySIDChanges( iBufferedNotif );
+        iBufferedNotif.Reset();
+        }
+    }
+
+//  End of File