diff -r 1fc85118c3ae -r 870918037e16 locationlandmarksrefappfors60/Src/LandmarksCategoriesEngine.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/locationlandmarksrefappfors60/Src/LandmarksCategoriesEngine.cpp	Wed Sep 01 12:31:27 2010 +0100
@@ -0,0 +1,384 @@
+/*
+* Copyright (c) 2004-2005 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:  Implementation of CLandmarksCategoriesEngine
+*
+*/
+
+
+
+#include <EPos_CPosLandmarkDatabase.h>
+#include <EPos_CPosLmCatNameCriteria.h>
+#include <EPos_CPosLandmarkSearch.h>
+#include <EPos_CPosLmCategoryManager.h>
+
+#include "LandmarksCategoriesEngine.h"
+#include "LandmarksLmOpWrapper.h"
+
+// ============================ MEMBER FUNCTIONS ===============================
+
+// -----------------------------------------------------------------------------
+// -----------------------------------------------------------------------------
+//
+CLandmarksCategoriesEngine::CLandmarksCategoriesEngine(
+    CPosLandmarkDatabase& aDb)
+:   CLandmarksEngineBase(aDb)
+    {
+    }
+
+// -----------------------------------------------------------------------------
+// -----------------------------------------------------------------------------
+//
+void CLandmarksCategoriesEngine::ConstructL()
+    {
+    CLandmarksEngineBase::ConstructL();
+    iCatManager = CPosLmCategoryManager::NewL(iDb);
+    }
+
+// -----------------------------------------------------------------------------
+// -----------------------------------------------------------------------------
+//
+CLandmarksCategoriesEngine* CLandmarksCategoriesEngine::NewL(
+    CPosLandmarkDatabase& aDb)
+    {
+    CLandmarksCategoriesEngine* self = 
+        new (ELeave) CLandmarksCategoriesEngine(aDb);
+    CleanupStack::PushL(self);
+    self->ConstructL();
+    CleanupStack::Pop(self);
+    return self;
+    }
+
+// -----------------------------------------------------------------------------
+// -----------------------------------------------------------------------------
+//
+CLandmarksCategoriesEngine::~CLandmarksCategoriesEngine()
+    {
+    Cancel();
+    delete iCatManager;
+    iSubSetOfIds.Close();
+    iItemIds.Close();
+    }
+
+// -----------------------------------------------------------------------------
+// -----------------------------------------------------------------------------
+//
+void CLandmarksCategoriesEngine::AddCategoryL(CPosLandmarkCategory& aCategory)
+    {
+    iCatManager->AddCategoryL(aCategory);
+    }
+
+// -----------------------------------------------------------------------------
+// -----------------------------------------------------------------------------
+//
+void CLandmarksCategoriesEngine::UpdateCategoryL(const CPosLandmarkCategory& aCategory)
+    {
+    iCatManager->UpdateCategoryL(aCategory);
+    }
+
+// -----------------------------------------------------------------------------
+// -----------------------------------------------------------------------------
+//
+void CLandmarksCategoriesEngine::DeleteCategoryL(TPosLmItemId aItemId)
+    {
+    ExecuteAndDeleteLD(iCatManager->RemoveCategoryL(aItemId));
+    }
+
+// -----------------------------------------------------------------------------
+// -----------------------------------------------------------------------------
+//
+CPosLandmarkCategory* CLandmarksCategoriesEngine::CategoryLC(TPosLmItemId aItemId)
+    {
+    return iCatManager->ReadCategoryLC(aItemId);
+    }
+
+// -----------------------------------------------------------------------------
+// -----------------------------------------------------------------------------
+//
+void CLandmarksCategoriesEngine::StartSearchingCategoriesL(
+    MLandmarksOperationObserver* aObserver)
+    {
+    // We need to cancel if we are searching/reading categories.
+    Cancel();
+
+    iObserver = aObserver;
+    iSearchResultExists = EFalse;
+    iFilterSearch = EFalse;
+
+    // Complete ourselves and start search for all categories in db in RunL().
+    iStatus = KRequestPending;
+    SetPriorityAndSetActive();
+    iActiveOperation = ECategorySearch;
+    TRequestStatus* status = &iStatus;
+    User::RequestComplete(status, KErrNone);
+    }
+
+// -----------------------------------------------------------------------------
+// -----------------------------------------------------------------------------
+//
+void CLandmarksCategoriesEngine::StartSearchingCategoriesL(
+    const TDesC& aSearchPattern, 
+    TBool aSearchOnlyInPreviousMatches,
+    MLandmarksOperationObserver* aObserver)
+    {
+    // We need to cancel if we are searching/reading categories.
+    Cancel();
+
+    if (!iSearchResultExists)
+        {
+        // There are no previous results or previous search did not complete.
+        // We cannot use the result from it.
+        aSearchOnlyInPreviousMatches = EFalse;
+        }
+    iSearchResultExists = EFalse;
+    iFilterSearch = ETrue;
+
+    // Set search criteria
+    CPosLmCatNameCriteria* criteria = CPosLmCatNameCriteria::NewLC();
+    criteria->SetSearchPatternL(aSearchPattern);
+
+    // Create search operation
+    CPosLmOperation* operation = iSearcher->StartCategorySearchL(
+        *criteria, 
+        CPosLmCategoryManager::ECategorySortOrderNameAscending, 
+        aSearchOnlyInPreviousMatches);
+    CleanupStack::PopAndDestroy(criteria);
+
+    // Start search operation
+    iObserver = aObserver;
+    iStatus = KRequestPending;
+    iLmOpWrapper->StartOperation(operation, iStatus);
+    SetPriorityAndSetActive();
+    iActiveOperation = ECategorySearch;
+    }
+
+// -----------------------------------------------------------------------------
+// -----------------------------------------------------------------------------
+//
+RArray<TPosLmItemId>* CLandmarksCategoriesEngine::FetchSearchResult()
+    {
+    return &iItemIds;
+    }
+
+// -----------------------------------------------------------------------------
+// -----------------------------------------------------------------------------
+//
+void CLandmarksCategoriesEngine::StartReadingCategoriesL(
+    TInt aNrOfItemsToReadPerBundle,
+    MLandmarksOperationObserver* aObserver)
+    {
+    // We need to cancel if we are searching/reading landmarks.
+    Cancel();
+
+    iNrOfItemsToRead = aNrOfItemsToReadPerBundle;
+    iObserver = aObserver;
+    iCurrentItemId = 0;
+
+    // Start reading a bundle of categories
+    ReadSomeCategoriesL();
+    iActiveOperation = ECategoryRead;
+    }
+
+// -----------------------------------------------------------------------------
+// -----------------------------------------------------------------------------
+//
+CArrayPtr<CPosLandmarkCategory>* CLandmarksCategoriesEngine::FetchCategoriesLC()
+    {
+    TInt nrOfItems = iSubSetOfIds.Count();
+    CArrayPtr<CPosLandmarkCategory>* categories = 
+        new (ELeave) CArrayPtrFlat<CPosLandmarkCategory>(nrOfItems);
+    CleanupStack::PushL(categories);
+
+    // Start the actual read of landmarks. This is done synchronously since 
+    // there is no asynchronous read method as there is for landmarks:
+    // (Compare TakePreparedPartialLandmarksL()) 
+    for (TInt i = 0; i < nrOfItems; i++)
+        {
+        CPosLandmarkCategory* category = 
+            iCatManager->ReadCategoryLC(iSubSetOfIds[i]);
+        categories->AppendL(category);
+        CleanupStack::Pop(category);
+        }
+
+    return categories;
+    }
+
+// -----------------------------------------------------------------------------
+// -----------------------------------------------------------------------------
+//
+CArrayPtr<CPosLandmarkCategory>* CLandmarksCategoriesEngine::CategoriesL()
+    {
+    const TInt KGranularity = 8;
+    CArrayPtrFlat<CPosLandmarkCategory>* categories = 
+        new (ELeave) CArrayPtrFlat<CPosLandmarkCategory>(KGranularity);
+    CleanupStack::PushL(categories);
+    
+    // Get an iterator for all existing categories sorted ascending by name
+    CPosLmItemIterator* itemIterator = iCatManager->CategoryIteratorL(
+        CPosLmCategoryManager::ECategorySortOrderNameAscending);
+    CleanupStack::PushL(itemIterator);
+
+    // Read all categories and add them to an array
+    TPosLmItemId catId = itemIterator->NextL();
+    while (catId != KPosLmNullItemId)
+        {
+        CPosLandmarkCategory* category = iCatManager->ReadCategoryLC(catId);
+        categories->AppendL(category);
+        CleanupStack::Pop(category);
+
+        catId = itemIterator->NextL();
+        }
+    CleanupStack::PopAndDestroy(itemIterator);
+    CleanupStack::Pop(categories);
+
+    return categories;
+    }
+
+// -----------------------------------------------------------------------------
+// -----------------------------------------------------------------------------
+//
+void CLandmarksCategoriesEngine::RunL()
+    {
+    if (iStatus == KErrNone)
+        {
+        if (iActiveOperation == ECategorySearch)
+            {
+            // Fetch search result
+            PopulateItemIdArrayL();
+            }
+        else if (iActiveOperation == ECategoryRead)
+            {
+            if (iCurrentItemId < iItemIds.Count())
+                {
+                // There are still found landmarks to read
+                iObserver->NotifyOperationProgressL(
+                    iActiveOperation, KOperationNotReady, KErrNone);
+                ReadSomeCategoriesL();
+                }
+            else
+                {
+                // No more matches to read
+                NotifyOperationReadyL(iActiveOperation, KErrNone);
+                }
+            }
+        }
+    else
+        {
+        // Operation failed. Forward error code
+        NotifyOperationReadyL(iActiveOperation, iStatus.Int());
+        }
+    }
+
+// -----------------------------------------------------------------------------
+// -----------------------------------------------------------------------------
+//
+void CLandmarksCategoriesEngine::DoCancel()
+    {
+    iLmOpWrapper->Cancel();
+    if (iActiveOperation == ECategorySearch)
+        {
+        iSearchResultExists = EFalse;
+        }
+    iActiveOperation = ENoOperation;
+    }
+
+// -----------------------------------------------------------------------------
+// -----------------------------------------------------------------------------
+//
+TInt CLandmarksCategoriesEngine::RunError(TInt aError)
+    {
+    // Notify user and ignore error code
+    TInt err;
+    TRAP(err, NotifyOperationReadyL(iActiveOperation, aError));
+
+    return KErrNone;
+    }
+
+// -----------------------------------------------------------------------------
+// -----------------------------------------------------------------------------
+//
+void CLandmarksCategoriesEngine::ReadSomeCategoriesL()
+    {
+    // Create a subset of the found matches to read
+    iSubSetOfIds.Reset();
+    TInt nrOfMatches = iItemIds.Count();
+    TInt i = 0;
+    while (i < iNrOfItemsToRead && iCurrentItemId < nrOfMatches)
+        {
+        User::LeaveIfError(
+            iSubSetOfIds.Append(iItemIds[iCurrentItemId]));
+        iCurrentItemId++;
+        i++;
+        }
+
+    // Simulate start reading found matches. There is no asynchronous search 
+    // functionality for categories as there is for landmarks, 
+    // (Compare PreparePartialLandmarksL())
+    iStatus = KRequestPending;
+    SetPriorityAndSetActive();
+    TRequestStatus* status = &iStatus;
+    User::RequestComplete(status, KErrNone);
+    }
+
+// -----------------------------------------------------------------------------
+// -----------------------------------------------------------------------------
+//
+void CLandmarksCategoriesEngine::NotifyOperationReadyL(
+    TOperation aOperation, 
+    TInt aErrorCode)
+    {
+    iActiveOperation = ENoOperation;
+    iObserver->NotifyOperationProgressL(
+        aOperation, 
+        KOperationReady, 
+        aErrorCode);
+    }
+
+// -----------------------------------------------------------------------------
+// -----------------------------------------------------------------------------
+//
+void CLandmarksCategoriesEngine::PopulateItemIdArrayL()
+    {
+    // Fetch itemIterator
+    CPosLmItemIterator* itemIterator = NULL;
+    if (iFilterSearch)
+        {
+        itemIterator = iSearcher->MatchIteratorL();
+        iSearchResultExists = ETrue;
+        }
+    else
+        {
+        itemIterator = iCatManager->CategoryIteratorL(
+            CPosLmCategoryManager::ECategorySortOrderNameAscending);
+        }
+    CleanupStack::PushL(itemIterator);
+    itemIterator->Reset();
+
+    // Fetch iItemIds
+    TUint nrOfItems = itemIterator->NumOfItemsL();
+    if (nrOfItems > 0)
+        {
+        TInt startIndex = 0;
+        iItemIds.Reset();
+        itemIterator->GetItemIdsL(iItemIds, startIndex, nrOfItems);
+        NotifyOperationReadyL(iActiveOperation, KErrNone);
+        }
+    else
+        {
+        // No matches found
+        NotifyOperationReadyL(iActiveOperation, KErrNotFound);
+        }
+    CleanupStack::PopAndDestroy(itemIterator);
+    }
+
+