predictivesearch/PcsAlgorithm/Algorithm2/src/CPcsAlgorithm2.cpp
changeset 0 e686773b3f54
child 12 4ae315f230bc
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/predictivesearch/PcsAlgorithm/Algorithm2/src/CPcsAlgorithm2.cpp	Tue Feb 02 10:12:17 2010 +0200
@@ -0,0 +1,1505 @@
+/*
+* Copyright (c) 2007 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: Predictive Contact Search Algorithm 1 main class
+*
+*/
+
+// INCLUDES
+#include <VPbkEng.rsg>
+#include <PtiEngine.h>
+#include <centralrepository.h>
+#include <AknFepInternalCRKeys.h>
+
+#include "CPcsAlgorithm2.h"
+#include "CPcsAlgorithm2Helper.h"
+#include "CPcsAlgorithm2MultiSearchHelper.h"
+#include "CPcsAlgorithm2Utils.h"
+#include "CPcsDebug.h"
+#include "CPcsCache.h"
+#include "CPcsKeyMap.h"
+#include "CPsData.h"
+#include "CWords.h"
+#include "CPsQuery.h"
+#include "CPsDataPluginInterface.h"
+#include "CPcsDefs.h"
+#include "FindUtilChineseECE.h"
+
+// UID used for Publish and Subscribe mechanism
+// This should be same as the one defined in CPsPropertyHandler.cpp
+const TUid KCStatus =
+    {
+    0x2000B5B6
+    };
+
+// ============================== MEMBER FUNCTIONS ============================
+
+// ----------------------------------------------------------------------------
+// CPcsAlgorithm2::NewL
+// Two Phase Construction
+// ----------------------------------------------------------------------------
+CPcsAlgorithm2* CPcsAlgorithm2::NewL()
+    {
+    PRINT ( _L("Enter CPcsAlgorithm2::NewL") );
+
+    CPcsAlgorithm2* self = new (ELeave) CPcsAlgorithm2();
+    CleanupStack::PushL(self);
+    self->ConstructL();
+    CleanupStack::Pop(self);
+
+    PRINT ( _L("End CPcsAlgorithm2::NewL") );
+
+    return self;
+    }
+
+// ----------------------------------------------------------------------------
+// CPcsAlgorithm2::CPcsAlgorithm2
+// Two Phase Construction
+// ----------------------------------------------------------------------------
+CPcsAlgorithm2::CPcsAlgorithm2()
+    {
+    PRINT ( _L("Enter CPcsAlgorithm2::CPcsAlgorithm2") );
+    PRINT ( _L("End CPcsAlgorithm2::CPcsAlgorithm2") );
+    }
+
+// ----------------------------------------------------------------------------
+// CPcsAlgorithm2::ConstructL
+// Two Phase Construction
+// ----------------------------------------------------------------------------
+void CPcsAlgorithm2::ConstructL()
+    {
+    PRINT ( _L("Enter CPcsAlgorithm2::ConstructL") );
+
+    iCacheStatus = ECachingNotStarted; // Starting status
+    iCacheError = KErrNone; // No error
+    iCacheCount = 0; // No data
+
+    iFindUtilECE = CFindUtilChineseECE::NewL(this);
+    iFindUtil = CFindUtil::NewL();
+    
+    iPluginLauncher = CIdle::NewL( CActive::EPriorityStandard );
+
+    // Define cache status property used to inform clients about the caching status.
+    TInt err = RProperty::Define(KCStatus, 0, RProperty::EInt);
+    if (err != KErrAlreadyExists)
+        {
+        User::LeaveIfError(err);
+        }
+
+    // Define cache error property used to inform client about the errors.
+    err = RProperty::Define(KCStatus, 1, RProperty::EInt);
+    if (err != KErrAlreadyExists)
+        {
+        User::LeaveIfError(err);
+        }
+
+    // Initialize key map and pti engine
+    TInt keyMapErr = KErrNone;
+    TRAP( keyMapErr, iKeyMap = CPcsKeyMap::NewL( this ));
+    if (keyMapErr != KErrNone)
+        {
+        PRINT ( _L("**********************************************."));
+        PRINT1 ( _L("CPcsAlgorithm2::ConstructL() KeyMap construction error. The keymap crashed with error code %d."), keyMapErr );
+        PRINT ( _L("Please check the keypad/language for which keymap got crashed.") );
+        PRINT ( _L("**********************************************."));
+        }
+    
+    // Initialize helpers
+    iHelper = CPcsAlgorithm2Helper::NewL(this);
+    iMultiSearchHelper = CPcsAlgorithm2MultiSearchHelper::NewL(this);
+
+    if(!iPluginLauncher->IsActive())
+        {
+        iPluginLauncher->Start(TCallBack(CPcsAlgorithm2::DoLaunchPluginsL, this));
+        }
+
+    PRINT ( _L("End CPcsAlgorithm2::ConstructL") );
+    }
+
+// ----------------------------------------------------------------------------
+// CPcsAlgorithm2::~CPcsAlgorithm2
+// Destructor
+// ----------------------------------------------------------------------------
+CPcsAlgorithm2::~CPcsAlgorithm2()
+    {
+    PRINT ( _L("Enter CPcsAlgorithm2::~CPcsAlgorithm2") );
+
+    // Clear TLS
+    Dll::SetTls(NULL);
+
+    // Cleanup cache
+    iPcsCache.ResetAndDestroy();
+
+    // Cleanup adapters interface and key handling
+    delete iKeyMap;
+    delete iPsDataPluginInterface;
+
+    // Cleanup helpers
+    delete iHelper;
+    delete iMultiSearchHelper;
+
+    delete iFindUtilECE;
+    delete iFindUtil;
+    
+    delete iPluginLauncher;
+
+    PRINT ( _L("End CPcsAlgorithm2::~CPcsAlgorithm2") );
+    }
+
+// ----------------------------------------------------------------------------
+// CPcsAlgorithm2::ReplaceZeroWithSpaceL
+// Replace first occurance of '0' in a sequence of '0's in ITU-T with space
+// ----------------------------------------------------------------------------
+TBool CPcsAlgorithm2::ReplaceZeroWithSpaceL(CPsQuery& aQuery)
+    {
+    TChar space(KSpace); // ascii value for space
+
+    TBool queryModified = EFalse;
+
+    // Skip initial zeros in query
+    TInt index = 0;
+    for (index = 0; index < aQuery.Count()
+            && aQuery.GetItemAtL(index).Character().GetNumericValue() == 0; ++index)
+        {
+        }
+
+    if (aQuery.KeyboardModeL() != EQwerty)
+        {
+        for (TInt beg = index; beg < aQuery.Count(); ++beg)
+            {
+            CPsQueryItem& item = aQuery.GetItemAtL(beg);
+
+            if (item.Character().GetNumericValue() == 0 && item.Mode()== EItut)
+                {
+                if (beg != 0)
+                    {
+                    CPsQueryItem& item1 = aQuery.GetItemAtL(beg - 1);
+                    if (item1.Character().GetNumericValue() != 0
+                            && !item1.Character().IsSpace())
+                        {
+                        item.SetCharacter(space);
+                        queryModified = ETrue;
+                        }
+                    }
+                else
+                    {
+                    item.SetCharacter(space);
+                    queryModified = ETrue;
+                    }
+                }
+            }
+        }
+
+    return queryModified;
+    }
+
+// ----------------------------------------------------------------------------
+// CPcsAlgorithm2::PerformSearchL
+// Search function for cache
+// ----------------------------------------------------------------------------
+void CPcsAlgorithm2::PerformSearchL(const CPsSettings& aSettings, CPsQuery& aQuery, 
+                                    RPointerArray<CPsClientData>& aSearchResults,
+                                    RPointerArray<CPsPattern>& aSearchSeqs)
+    {
+    PRINT ( _L("Enter CPcsAlgorithm2::PerformSearchL") );
+
+    __LATENCY_MARK ( _L("CPcsAlgorithm2::PerformSearchL") );
+
+    // Get the current language
+    TLanguage lang = User::Language();
+
+    // Check if the language is supported and the keyboard mode is not qwerty.
+
+    // Local arrays to hold the search results 
+    RPointerArray<CPsData> tempSearchResults;
+    RPointerArray<CPsData> tempSearchResults1;
+
+    // -------------------- Perform the basic search --------------------------
+
+    DoSearchL(aSettings, aQuery, tempSearchResults, aSearchSeqs);
+
+    // ------------------------------------------------------------------------
+
+    // ------------------- Perform advanced search if needed ------------------
+    // Substitute "0" with space
+    TBool queryModified = ReplaceZeroWithSpaceL(aQuery);
+
+    // If query got modified and the search query translated to more than 1 query
+    // perform a multi search again
+    if (queryModified)
+        {
+        // Split query
+        RPointerArray<CPsQuery> queryList = iMultiSearchHelper->MultiQueryL(aQuery);
+
+        //  Perform seach again
+        if (queryList.Count() > 1)
+            {
+            DoSearchL(aSettings, aQuery, tempSearchResults1, aSearchSeqs);
+            }
+
+        // Sort rule        
+        TLinearOrder<CPsData> rule(CPcsAlgorithm2Utils::CompareDataBySortOrder);
+
+        // Avoid duplicates and add new results
+        TIdentityRelation<CPsData> identityRule(CPsData::CompareById);
+        if (aSettings.GetSortType() != EAlphabetical)
+            {
+            TInt insertPos = 0;
+            for (int i = 0; i < tempSearchResults1.Count(); i++)
+                {
+                if (tempSearchResults.Find(tempSearchResults1[i],
+                                           identityRule) == KErrNotFound)
+                    {
+                    tempSearchResults.Insert(tempSearchResults1[i], insertPos);
+                    insertPos++;
+                    }
+
+                }
+
+            }
+        else
+            {
+
+            for (int i = 0; i < tempSearchResults1.Count(); i++)
+                {
+                if (tempSearchResults.Find(tempSearchResults1[i],
+                                           identityRule) == KErrNotFound)
+                    {
+                    tempSearchResults.InsertInOrderAllowRepeats(tempSearchResults1[i], 
+                                                                rule);
+                    }
+                }
+            }
+
+        queryList.ResetAndDestroy();
+        }
+    // ------------------------------------------------------------------------
+
+    // ---------------------- Write result objects to the stream --------------
+    // Truncate the result set if required
+    TInt numToDisplay = aSettings.MaxResults();
+    TInt resultSet = tempSearchResults.Count();
+
+    if (resultSet > numToDisplay && numToDisplay != -1)
+        {
+        // Copy the top N contents from tempSearchResults to the results stream
+        for (int i = 0; i < numToDisplay; i++)
+            {
+            aSearchResults.Append(WriteClientDataL(*(tempSearchResults[i])));
+            }
+
+        }
+    else
+        {
+        // Copy all the contents from tempSearchResults to the results stream
+        for (int i = 0; i < resultSet; i++)
+            {
+            aSearchResults.Append(WriteClientDataL(*(tempSearchResults[i])));
+            }
+        }
+    // ------------------------------------------------------------------------
+
+    // Cleanup local results array
+    tempSearchResults.Reset(); // Don't destroy
+    tempSearchResults1.Reset(); // Don't destroy
+
+    __LATENCY_MARKEND ( _L("CPcsAlgorithm2::PerformSearchL") );
+
+    PRINT ( _L("End CPcsAlgorithm2::PerformSearchL") );
+    }
+
+// ----------------------------------------------------------------------------
+// CPcsAlgorithm2::SearchInputL
+// Search function for input string
+// ----------------------------------------------------------------------------
+void CPcsAlgorithm2::SearchInputL(CPsQuery& aQuery, TDesC& aData,
+                                  RPointerArray<TDesC>& aMatchSet,
+                                  RArray<TPsMatchLocation>& aMatchLocation)
+    {
+    PRINT ( _L("Enter CPcsAlgorithm2::SearchInputL") );
+
+    // Get the current language
+    TLanguage lang = User::Language();
+
+    // Check if the language is supported and the keyboard mode is not qwerty.
+
+    // Print input query for debug
+    aQuery.PrintQuery();
+
+    // Print received search data
+    PRINT1 ( _L("Search data received = %S"), &aData);
+
+    // -------------------- Perform the basic search --------------------------
+
+    DoSearchInputL(aQuery, aData, aMatchSet, aMatchLocation);
+
+    // ------------------------------------------------------------------------   
+
+    // ------------------- Perform advanced search if needed ------------------
+    // Substitute "0" with space
+    TBool queryModified = ReplaceZeroWithSpaceL(aQuery);
+
+    // If query got modified and the search query translated to more than 1 query
+    // perform a multi search again
+    if (queryModified)
+        {
+        RPointerArray<CPsQuery> queryList = iMultiSearchHelper->MultiQueryL(aQuery);
+
+        if (queryList.Count() > 1)
+            {
+            DoSearchInputL(aQuery, aData, aMatchSet, aMatchLocation);
+            }
+
+        queryList.ResetAndDestroy();
+        }
+    // ------------------------------------------------------------------------
+
+    // Sort match set
+    iHelper->SortSearchSeqsL(aMatchSet);
+
+    PRINT ( _L("End CPcsAlgorithm2::SearchInputL") );
+    }
+
+// ----------------------------------------------------------------------------
+// CPcsAlgorithm2::SearchMatchStringL
+// Search function for input string, result also as string
+// ----------------------------------------------------------------------------
+void CPcsAlgorithm2::SearchMatchStringL( CPsQuery& /*aSearchQuery*/,
+                            TDesC& /*aSearchData*/,
+                            TDes& /*aMatch*/ )
+    {
+    //NOT IMPLEMENTED YET
+    }
+
+// ----------------------------------------------------------------------------
+// CPcsAlgorithm2::DoSearchL
+// Search function helper
+// ----------------------------------------------------------------------------
+void CPcsAlgorithm2::DoSearchL(const CPsSettings& aSettings, CPsQuery& aQuery, 
+                               RPointerArray<CPsData>& searchResults,
+                               RPointerArray<CPsPattern>& searchSeqs)
+    {
+    PRINT ( _L("Enter CPcsAlgorithm2::DoSearchL") );
+
+    // Print query for debug
+    aQuery.PrintQuery();
+
+    // -(0)----------------- Check if group search is required ---------------    
+    RArray<TInt> contactsInGroup;
+    RArray<TInt> groupIdArray;
+
+    // Create a new settings instance
+    CPsSettings *tempSettings = aSettings.CloneL();
+
+    TBool isGroupSearch = IsGroupSearchL(*tempSettings, groupIdArray);
+
+    if (isGroupSearch)
+        {
+        // Replace groups URI with contacts DB URI in new search settings
+        ReplaceGroupsUriL(*tempSettings);
+
+        // List of contacts in this group	
+        GetContactsInGroupL(groupIdArray[0], contactsInGroup);
+        }
+
+    groupIdArray.Close();
+
+    // -----------------------------------------------------------------------
+
+
+    // Extract query list. 
+    RPointerArray<CPsQuery> queryList = iMultiSearchHelper->MultiQueryL(aQuery);
+
+    // -(1)--------------------- No query return all contacts ----------------    
+    if (queryList.Count() == 0)
+        {
+        GetAllContentsL(*tempSettings, searchResults);
+
+        if (isGroupSearch)
+            {
+            FilterSearchResultsForGroupsL(contactsInGroup, searchResults);
+            }
+        }
+    // ------------------------------------------------------------------------
+
+
+    // -(2)------------------------ Perform a single query search -------------
+    if (queryList.Count() == 1)
+        {
+        TInt mode = aQuery.KeyboardModeL();
+
+        CPsQuery* query = queryList[0];
+
+        iFindUtilECE->SetKeyboardMode(mode);
+
+        switch (mode)
+            {
+            case EItut:
+
+                PRINT ( _L("Query received is in ITU-T mode") );
+
+                // Search results
+                iHelper->SearchITUL(*tempSettings, *query, isGroupSearch,
+                                    contactsInGroup, searchResults, searchSeqs);
+
+                break;
+
+            case EQwerty:
+
+                PRINT ( _L("Query received is in QWERTY mode") );
+
+                // Search results
+                iHelper->SearchQWERTYL(*tempSettings, *query, isGroupSearch,
+                                       contactsInGroup, searchResults, searchSeqs);
+
+                break;
+
+            case EModeUndefined:
+
+                PRINT ( _L("Query received is in Mixed mode. Keyboard swap happened.") );
+
+                // Search results
+                iHelper->SearchMixedL(*tempSettings, *query, isGroupSearch,
+                                      contactsInGroup, searchResults, searchSeqs);
+
+                break;
+            }
+
+        }
+    // ------------------------------------------------------------------------
+
+
+    // -(3)---------------------------- Perform a multi query search ----------
+    if (queryList.Count() > 1) // multiple query
+        {
+        PRINT ( _L("Query received is in multiple. Performing a multi search.") );
+
+        TInt mode = aQuery.KeyboardModeL();
+        iFindUtilECE->SetKeyboardMode(mode);
+
+        for (int i = 0; i < queryList.Count(); i++)
+            {
+            TPtrC queryPtr = queryList[i]->QueryAsStringLC();
+            PRINT2 ( _L("Received Query, index = %d; value = %S"), i, &queryPtr );
+            CleanupStack::PopAndDestroy();
+            }
+
+        // Search results
+        iMultiSearchHelper->SearchMultiL(*tempSettings, queryList, isGroupSearch, 
+                                         contactsInGroup, searchResults, searchSeqs, 
+                                         mode);
+        }
+    // -------------------------------------------------------------------------	
+
+    // Cleanup
+    delete tempSettings;
+    tempSettings = NULL;
+
+    groupIdArray.Close();
+    contactsInGroup.Close();
+    queryList.ResetAndDestroy();
+
+    PRINT ( _L("End CPcsAlgorithm2::DoSearchL") );
+    }
+
+// ----------------------------------------------------------------------------
+// CPcsAlgorithm2::DoSearchInputL
+// Search function helper
+// ----------------------------------------------------------------------------
+void CPcsAlgorithm2::DoSearchInputL(CPsQuery& aQuery, TDesC& aData,
+                                    RPointerArray<TDesC>& aMatchSet,
+                                    RArray<TPsMatchLocation>& aMatchLocation)
+    {
+
+    PRINT ( _L("Enter CPcsAlgorithm2::DoSearchInputL") );
+
+    // Check if any seperator is there in the query
+    RPointerArray<CPsQuery> queryList = iMultiSearchHelper->MultiQueryL(aQuery);
+
+    // No query    
+    if (queryList.Count() == 0)
+        {
+        PRINT ( _L("Query received is empty") );
+        return;
+        }
+
+    RPointerArray<HBufC> convertedQuery;
+    iMultiSearchHelper->ConvertQueryToListL(queryList, convertedQuery);
+
+    // Single query
+    if (queryList.Count() == 1)
+        {
+        iHelper->SearchMatchSeqL(convertedQuery[0], aData, aMatchSet, aQuery,
+                                 aMatchLocation);
+
+        }
+
+    if (queryList.Count() > 1) // multiple query
+        {
+        PRINT ( _L("Query received is in multiple. Performing a multi search.") );
+
+        for (int i = 0; i < queryList.Count(); i++)
+            {
+            TPtrC queryPtr = queryList[i]->QueryAsStringLC();
+            PRINT2 ( _L("Rceived Query, index = %d; value = %S"), i, &queryPtr );
+            CleanupStack::PopAndDestroy();
+            }
+
+        // Search results
+        iMultiSearchHelper->SearchMatchSeqMultiL(queryList, aData, aMatchSet,
+                                                 aMatchLocation);
+
+        }
+
+    // Delete all the query elements
+    queryList.ResetAndDestroy();
+    convertedQuery.ResetAndDestroy();
+
+    PRINT ( _L("End CPcsAlgorithm2::DoSearchInputL") );
+    }
+
+// ----------------------------------------------------------------------------
+// CPcsAlgorithm2::AddData
+// Add a data element to the pool
+// ----------------------------------------------------------------------------    
+void CPcsAlgorithm2::AddData(TDesC& aDataStore, CPsData* aData)
+    {
+    TInt arrayIndex = GetCacheIndex(aDataStore);
+
+    if (arrayIndex < 0)
+        return;
+
+    CPcsCache* cache = iPcsCache[arrayIndex];
+
+    // Fill the data store index
+    TInt dataStoreIndex = FindStoreUri(aDataStore);
+    if (dataStoreIndex >= 0)
+        {
+        aData->SetUriId(dataStoreIndex);
+        }
+    else
+        {
+        PRINT(_L("CPcsAlgorithm2::AddDataL Unknown data store"));
+        return;
+        }
+    TRAPD(err, cache->AddToCacheL(*aData));
+
+    if (err != KErrNone)
+        {
+        SetCachingError(aDataStore, err);
+        }
+    }
+
+// ----------------------------------------------------------------------------
+// CPcsAlgorithm2::RemoveData
+// Remove a data element from the pool
+// ----------------------------------------------------------------------------
+void CPcsAlgorithm2::RemoveData(TDesC &aDataStore, TInt aItemId)
+    {
+    TInt arrayIndex = GetCacheIndex(aDataStore);
+
+    if (arrayIndex < 0)
+        return;
+
+    CPcsCache* cache = iPcsCache[arrayIndex];
+    TRAPD(err, cache->RemoveFromCacheL(aItemId));
+
+    if (err != KErrNone)
+        {
+        SetCachingError(aDataStore, err);
+        }
+    }
+
+// ---------------------------------------------------------------------
+// CPcsAlgorithm2::RemoveAll
+// Remove all the contacts from a datastore
+// ---------------------------------------------------------------------
+void CPcsAlgorithm2::RemoveAll(TDesC& aDataStore)
+    {
+    TInt dataStoreIndex = GetCacheIndex(aDataStore);
+
+    if (dataStoreIndex < 0)
+        return;
+
+    CPcsCache* cache = iPcsCache[dataStoreIndex];
+    TRAPD(err, cache->RemoveAllFromCacheL());
+
+    if (err != KErrNone)
+        {
+        SetCachingError(aDataStore, err);
+        }
+    }
+
+// ----------------------------------------------------------------------------
+// CPcsAlgorithm2::GetCacheIndex
+// Return the cache index for a data store
+// ----------------------------------------------------------------------------
+TInt CPcsAlgorithm2::GetCacheIndex(TDesC& aDataStore)
+    {
+    for (int i = 0; i < iPcsCache.Count(); i++)
+        {
+        CPcsCache* cache = iPcsCache[i];
+
+        if (cache->GetURI().CompareC(aDataStore) == 0)
+            return i;
+        }
+
+    return -1;
+    }
+
+// ----------------------------------------------------------------------------
+// CPcsAlgorithm2::AddDataStore
+// Adds a new store
+// ----------------------------------------------------------------------------
+void CPcsAlgorithm2::AddDataStore(TDesC& aDataStore)
+    {
+    // Check if the datastore cache already exists
+    TInt index = GetCacheIndex(aDataStore);
+    if (index != -1)
+        {
+        // Already exists
+        return;
+        }
+
+    // Create a new cache    
+    CPcsCache* cache = NULL;
+    TRAPD(err, cache = CPcsCache::NewL( this, aDataStore, *iKeyMap, iCacheCount));
+    if (err != KErrNone)
+        {
+        SetCachingError(aDataStore, err);
+        return;
+        }
+
+    // Increment the cachecount
+    iCacheCount++;
+
+    RArray<TInt> dataFields;
+    TRAP(err, iPsDataPluginInterface->GetSupportedDataFieldsL(cache->GetURI(), dataFields));
+    if (err != KErrNone)
+        {
+        SetCachingError(aDataStore, err);
+        return;
+        }
+    cache->SetDataFields(dataFields);
+
+    // Check if sort order is persisted already    
+    RArray<TInt> sortOrder;
+    TRAP(err, ReadSortOrderFromCenRepL(*(cache->GetUri()), sortOrder));
+    if (err != KErrNone)
+        {
+        SetCachingError(aDataStore, err);
+        return;
+        }
+
+    if (sortOrder.Count() == 0)
+        {
+        cache->SetSortOrder(dataFields); // Initial sort order	
+        }
+    else
+        {
+        cache->SetSortOrder(sortOrder); // Persisted sort order
+        }
+
+    sortOrder.Close();
+    dataFields.Close();
+
+    iPcsCache.Append(cache);
+
+    TRAP(err, iPsDataPluginInterface->RequestForDataL(aDataStore));
+    if (err != KErrNone)
+        {
+        SetCachingError(aDataStore, err);
+        UpdateCachingStatus(aDataStore, ECachingCompleteWithErrors);
+        return;
+        }
+    }
+
+// ----------------------------------------------------------------------------
+// CPcsAlgorithm2::RemoveDataStore
+// Removes an existing data store
+// ----------------------------------------------------------------------------
+void CPcsAlgorithm2::RemoveDataStore(TDesC& aDataStore)
+    {
+    for (int i = 0; i < iPcsCache.Count(); i++)
+        {
+        CPcsCache* cache = iPcsCache[i];
+
+        if (cache->GetURI().CompareC(aDataStore) == 0)
+            {
+            delete iPcsCache[i];
+            iPcsCache.Remove(i);
+            iCacheCount--; 
+            }
+        }
+    }
+
+// ----------------------------------------------------------------------------
+// CPcsAlgorithm2::IsLanguageSupportedL
+// Returns ETrue if this language is supported
+// ----------------------------------------------------------------------------
+TBool CPcsAlgorithm2::IsLanguageSupportedL(TUint32 aLang)
+    {
+    return iKeyMap->IsLanguageSupportedL(aLang);
+    }
+
+// ----------------------------------------------------------------------------
+// CPcsAlgorithm2::GetUriForIdL
+// Get the URI string for this internal id
+// ----------------------------------------------------------------------------
+TDesC& CPcsAlgorithm2::GetUriForIdL(TUint8 aUriId)
+    {
+    TBool found = EFalse;
+    TInt i = 0;
+
+    for (i = 0; i < iPcsCache.Count(); i++)
+        {
+        if (iPcsCache[i]->GetUriId() == aUriId)
+            {
+            found = ETrue;
+            break;
+            }
+        }
+
+    if (!found)
+        {
+        User::Leave(KErrNotFound);
+        }
+
+    return *(iPcsCache[i]->GetUri());
+    }
+
+// ----------------------------------------------------------------------------
+// CPcsAlgorithm2::FindStoreUri
+// Checks if this store exists
+// ----------------------------------------------------------------------------
+TInt CPcsAlgorithm2::FindStoreUri(TDesC& aDataStore)
+    {
+    for (int i = 0; i < iPcsCache.Count(); i++)
+        {
+        if (aDataStore.CompareC(*(iPcsCache[i]->GetUri())) == 0)
+            {
+            return i;
+            }
+        }
+
+    return -1;
+    }
+
+// ----------------------------------------------------------------------------
+// CPcsAlgorithm2::UpdateCachingStatus
+// Update caching status
+// ----------------------------------------------------------------------------
+void CPcsAlgorithm2::UpdateCachingStatus(TDesC& aDataStore, TInt aStatus)
+    {
+    PRINT ( _L("Enter CPcsAlgorithm2::UpdateCachingStatus") );
+
+    TInt index = FindStoreUri(aDataStore);
+    iPcsCache[index]->UpdateCacheStatus(aStatus);
+
+    // Check if any error occurred
+    // If so, update the cache status, Set the property and return
+    if (aStatus < 0)
+        {
+        SetCachingError(aDataStore, aStatus);
+        //return;
+        }
+
+    //store the index for firstname and lastname
+    if (aStatus == ECachingComplete)
+        {
+        RArray<TInt> dataFields;
+        iPcsCache[index]->GetDataFields(dataFields);
+
+        for (int i = 0; i < dataFields.Count(); i++)
+            {
+            if (dataFields[i] == R_VPBK_FIELD_TYPE_FIRSTNAME)
+                {
+                iFirstNameIndex = i;
+                }
+            else if (dataFields[i] == R_VPBK_FIELD_TYPE_LASTNAME)
+                {
+                iLastNameIndex = i;
+                }
+            }
+        }
+
+    // No error occurred
+    TCachingStatus status = ECachingComplete;
+    TBool atLeastOneStoreCachingCompleteWithErrors(EFalse);
+    for (TInt i = 0; i < iPcsCache.Count(); i++)
+        {
+        if (iPcsCache[i]->GetCacheStatus() == ECachingComplete)
+            {
+            continue;
+            }
+        else if (iPcsCache[i]->GetCacheStatus() == ECachingCompleteWithErrors)
+            {
+            atLeastOneStoreCachingCompleteWithErrors = ETrue;
+            continue;
+            }
+        else
+            {
+            status = ECachingInProgress;
+            break;
+            }
+        }
+
+    if (status == ECachingComplete)
+        {
+        // See if any error occurred while caching
+        // If so, change the status to ECachingCompleteWithErrors
+        if ((iCacheError != KErrNone) || (atLeastOneStoreCachingCompleteWithErrors))
+            {
+            status = ECachingCompleteWithErrors;
+            }
+        }
+
+    // Check if status changed
+    if (status != iCacheStatus)
+        {
+        iCacheStatus = status;
+        RProperty::Set(KCStatus, 0, iCacheStatus);
+        }
+
+    PRINT ( _L("End CPcsAlgorithm2::UpdateCachingStatus") );
+    }
+
+// ----------------------------------------------------------------------------
+// CPcsAlgorithm2::SetCachingError
+// Updates cachinge error
+// ----------------------------------------------------------------------------
+void CPcsAlgorithm2::SetCachingError(TDesC& aDataStore, TInt aError)
+    {
+    TBuf<KBufferMaxLen> store;
+    store.Copy(aDataStore);
+    PRINT2 ( _L("SetCachingError::URI %S ERROR %d"), &store, aError );
+
+    iCacheError = aError;
+    RProperty::Set(KCStatus, 1, iCacheError);
+    }
+
+// ----------------------------------------------------------------------------
+// CPcsAlgorithm2::GetAllContentsL
+// Returns all the contents of a store
+// ----------------------------------------------------------------------------
+void CPcsAlgorithm2::GetAllContentsL(const CPsSettings& aSettings,
+                                     RPointerArray<CPsData>& aResults)
+    {
+    __LATENCY_MARK ( _L("CPcsAlgorithm2::GetAllContentsL") );
+
+    PRINT ( _L("Enter CPcsAlgorithm2::GetAllContentsL") );
+
+    // Get the data stores
+    RPointerArray<TDesC> aDataStores;
+    aSettings.SearchUrisL(aDataStores);
+
+    // To hold array of results from different data stores
+    typedef RPointerArray<CPsData> CPSDATA_R_PTR_ARRAY;
+    RPointerArray<CPSDATA_R_PTR_ARRAY> iSearchResultsArr;
+
+    // Get all contacts for each data store
+    for (int dsIndex = 0; dsIndex < aDataStores.Count(); dsIndex++)
+        {
+        RPointerArray<CPsData> *temp = new (ELeave) RPointerArray<CPsData> ();
+        iSearchResultsArr.Append(temp);
+
+        TInt arrayIndex = GetCacheIndex(*(aDataStores[dsIndex]));
+        if (arrayIndex < 0)
+            {
+            continue;
+            }
+
+        CPcsCache* cache = GetCache(arrayIndex);
+
+        cache->GetAllContentsL(*(iSearchResultsArr[dsIndex]));
+        }
+
+    aDataStores.ResetAndDestroy();
+
+    // Merge the results from different data stores
+    CPcsAlgorithm2Utils::FormCompleteSearchResultsL(iSearchResultsArr, aResults);
+
+    // Cleanup the local arrays
+    for (TInt i = 0; i < iSearchResultsArr.Count(); i++)
+        {
+        iSearchResultsArr[i]->Reset();
+        delete iSearchResultsArr[i];
+        iSearchResultsArr[i] = NULL;
+        }
+
+    iSearchResultsArr.Reset();
+
+    PRINT1 ( _L("Number of results = %d"), aResults.Count() );
+
+    PRINT ( _L("End CPcsAlgorithm2::GetAllContentsL") );
+
+    __LATENCY_MARKEND ( _L("CPcsAlgorithm2::GetAllContentsL") );
+    }
+
+// ----------------------------------------------------------------------------
+// CPcsAlgorithm2::IsGroupSearchL
+// Checks if a group search is required
+// ----------------------------------------------------------------------------
+TBool CPcsAlgorithm2::IsGroupSearchL(CPsSettings& aSettings,
+                                     RArray<TInt>& aGroupIdArray)
+    {
+    PRINT ( _L("Enter CPcsAlgorithm2::IsGroupSearchL") );
+
+    // Get the groupIds in the seach settings
+    aSettings.GetGroupIdsL(aGroupIdArray);
+
+    // Get the current URIs defined in settings    
+    RPointerArray<TDesC> searchUris;
+    aSettings.SearchUrisL(searchUris);
+
+    if (aGroupIdArray.Count() && (searchUris.Count() > aGroupIdArray.Count()))
+        {
+        // There is an error, either there are more than one groups
+        // or the settings contain a combination of group/non-group Uris
+        searchUris.ResetAndDestroy();
+        aGroupIdArray.Close();
+        User::Leave(KErrArgument);
+        }
+
+    searchUris.ResetAndDestroy();
+
+    PRINT ( _L("End CPcsAlgorithm2::IsGroupSearchL") );
+
+    if (aGroupIdArray.Count() == 1)
+        return ETrue;
+
+    return EFalse;
+    }
+
+// ----------------------------------------------------------------------------
+// CPcsAlgorithm2::ReplaceGroupsUriL
+// Replace groups uri to contacts uri
+// ----------------------------------------------------------------------------
+void CPcsAlgorithm2::ReplaceGroupsUriL(CPsSettings& aSettings)
+    {
+    RPointerArray<TDesC> uri;
+
+    // Set contacts db uri
+    HBufC* cntdb = HBufC::NewL(KBufferMaxLen);
+    cntdb->Des().Copy(KVPbkDefaultCntDbURI);
+    uri.Append(cntdb);
+    aSettings.SetSearchUrisL(uri);
+
+    // Cleanup
+    uri.ResetAndDestroy();
+    }
+
+// ----------------------------------------------------------------------------
+// CPcsAlgorithm2::FilterSearchResultsForGroupsL
+// Filters the results that belong to a group
+// ----------------------------------------------------------------------------
+void CPcsAlgorithm2::FilterSearchResultsForGroupsL(RArray<TInt>& contactsInGroup, 
+                                                   RPointerArray<CPsData>& aSearchResults)
+    {
+    PRINT ( _L("Enter CPcsAlgorithm2::FilterSearchResultsForGroupsL") );
+
+    // for each search result
+    // Note: aSearchResults.Count() is to be checked everytime,
+    //       since the elements are being removed dynamically.
+    for (TInt j = 0; j < aSearchResults.Count(); j++)
+        {
+        TBool includeResult = EFalse;
+
+        if (contactsInGroup.Find(aSearchResults[j]->Id()) != KErrNotFound)
+            {
+            includeResult = ETrue;
+            }
+
+        if (includeResult == EFalse)
+            {
+            aSearchResults.Remove(j);
+            j--; // j is decremented, since that object is removed
+            }
+        }
+
+    PRINT ( _L("End CPcsAlgorithm2::FilterSearchResultsForGroupsL") );
+    }
+
+// ----------------------------------------------------------------------------
+// CPcsAlgorithm2::GetContactsInGroupL
+// Recover contacts that belong to a group
+// ----------------------------------------------------------------------------
+void CPcsAlgorithm2::GetContactsInGroupL(TInt aGroupId, RArray<TInt>& aGroupContactIds)
+    {
+    // Clear results array
+    aGroupContactIds.Reset();
+
+    // Groups URI
+    HBufC* groupURI = HBufC::NewL(50);
+    groupURI->Des().Copy(KVPbkDefaultGrpDbURI);
+
+    // Cache Index   
+    TInt cacheIndex = GetCacheIndex(*groupURI);
+
+    // Cleanup
+    delete groupURI;
+    groupURI = NULL;
+
+    // Get the groups contact ids 
+    if (cacheIndex != -1)
+        {
+        RPointerArray<CPsData> groups;
+
+        // Get all groups
+        iPcsCache[cacheIndex]->GetAllContentsL(groups);
+
+        // Get all contacts in group
+        for (TInt i = 0; i < groups.Count(); i++)
+            {
+            if (groups[i]->Id() == aGroupId)
+                {
+                groups[i]->IntDataExt(aGroupContactIds); // All contacts in group
+                break;
+                }
+            }
+
+        groups.Reset();
+        }
+    }
+
+// ----------------------------------------------------------------------------
+// CPcsAlgorithm2::GetDataOrderL
+// 
+// ----------------------------------------------------------------------------
+void CPcsAlgorithm2::GetDataOrderL(TDesC& aURI, RArray<TInt>& aDataOrder)
+    {
+    PRINT ( _L("End CPcsAlgorithm2::GetDataOrderL") );
+
+    TInt arrayIndex = -1;
+
+    if (CPcsAlgorithm2Utils::IsGroupUri(aURI))
+        {
+        // If search in a group uri, use contacts db
+        TBuf<255> cntdb(KVPbkDefaultCntDbURI);
+        arrayIndex = GetCacheIndex(cntdb);
+        }
+    else
+        {
+        arrayIndex = GetCacheIndex(aURI);
+        }
+
+    if (arrayIndex < 0)
+        {
+        return;
+        }
+
+    CPcsCache* cache = iPcsCache[arrayIndex];
+
+    aDataOrder.Reset();
+
+    // Get the data fields for this cache
+    cache->GetDataFields(aDataOrder);
+
+    PRINT ( _L("End CPcsAlgorithm2::GetDataOrderL") );
+    }
+
+// ----------------------------------------------------------------------------
+// CPcsAlgorithm2::GetSortOrderL
+// 
+// ----------------------------------------------------------------------------
+void CPcsAlgorithm2::GetSortOrderL(TDesC& aURI, RArray<TInt>& aDataOrder)
+    {
+    PRINT ( _L("End CPcsAlgorithm2::GetSortOrderL") );
+
+    TInt arrayIndex = -1;
+
+    if (CPcsAlgorithm2Utils::IsGroupUri(aURI))
+        {
+        // If search in a group uri, use contacts db
+        TBuf<255> cntdb(KVPbkDefaultCntDbURI);
+        arrayIndex = GetCacheIndex(cntdb);
+        }
+    else
+        {
+        arrayIndex = GetCacheIndex(aURI);
+        }
+
+    if (arrayIndex < 0)
+        {
+        return;
+        }
+
+    CPcsCache* cache = iPcsCache[arrayIndex];
+
+    aDataOrder.Reset();
+
+    // Get the data fields for this cache
+    cache->GetSortOrder(aDataOrder);
+
+    PRINT ( _L("End CPcsAlgorithm2::GetSortOrderL") );
+    }
+
+// ----------------------------------------------------------------------------
+// CPcsAlgorithm2::ChangeSortOrderL
+// 
+// ----------------------------------------------------------------------------
+void CPcsAlgorithm2::ChangeSortOrderL(TDesC& aURI, RArray<TInt>& aSortOrder)
+    {
+    PRINT ( _L("Enter CPcsAlgorithm2::ChangeSortOrderL.") );
+
+    PRINT ( _L("CPcsAlgorithm2::ChangeSortOrderL. Sort order change received.") );
+    PRINT1 ( _L("URI = %S"), &aURI );
+
+    // If URI is search in a group URI return       
+    if (CPcsAlgorithm2Utils::IsGroupUri(aURI))
+        {
+        PRINT ( _L("CPcsAlgorithm2::ChangeSortOrderL. Sort order change not supported.") );
+        return;
+        }
+
+    // Check if a cache exists
+    TInt arrayIndex = GetCacheIndex(aURI);
+    if (arrayIndex < 0)
+        {
+        PRINT ( _L("CPcsAlgorithm2::ChangeSortOrderL. Cache for URI doesn't exist.") );
+        return;
+        }
+
+    // Cache instance for this URI
+    CPcsCache* cache = iPcsCache[arrayIndex];
+
+    // Check if received sort order is same as before
+    RArray<TInt> mySortOrder;
+    cache->GetSortOrder(mySortOrder);
+
+    if (aSortOrder.Count() == mySortOrder.Count())
+        {
+        TBool same = ETrue;
+        for (int i = 0; i < mySortOrder.Count(); i++)
+            {
+            if (mySortOrder[i] != aSortOrder[i])
+                {
+                same = EFalse;
+                break;
+                }
+            }
+
+        if (same)
+            {
+            PRINT ( _L("CPcsAlgorithm2::ChangeSortOrderL. Same sort order received. Ignoring ...") );
+            PRINT ( _L("End CPcsAlgorithm2::ChangeSortOrderL.") );
+            mySortOrder.Reset();
+            return;
+            }
+        }
+
+    mySortOrder.Reset();
+
+    PRINT ( _L("CPcsAlgorithm2::ChangeSortOrderL. New sort order received. Refreshing ...") );
+
+    // Set the new sort order on the cache
+    cache->SetSortOrder(aSortOrder);
+
+    // Persist the changes in sort order
+    WriteSortOrderToCenRepL(aURI, aSortOrder);
+
+    // Request for data again
+    TInt err = KErrNone;
+    TRAP(err, cache->ResortdataInPoolsL());
+    if (err != KErrNone)
+        {
+        PRINT ( _L("CPcsAlgorithm1::ChangeSortOrderL() Set Caching Error ") );
+        SetCachingError(aURI, err);
+        UpdateCachingStatus(aURI, ECachingCompleteWithErrors);
+        return;
+        }
+
+    PRINT ( _L("End CPcsAlgorithm2::ChangeSortOrderL.") );
+    }
+
+// ---------------------------------------------------------------------------------
+// Read the persisted sort order from the central repository
+// Persisted sort order is of form URI Field1 Field2 Field3 .. FieldN (space delimited)
+// ---------------------------------------------------------------------------------
+void CPcsAlgorithm2::ReadSortOrderFromCenRepL(TDesC& aURI, RArray<TInt>& aSortOrder)
+    {
+    PRINT ( _L("Enter CPcsAlgorithm2::ReadSortOrderFromCenRepL.") );
+
+    aSortOrder.Reset();
+
+    CRepository *repository = CRepository::NewL(KCRUidPSSortOrder);
+
+    // Read the sort order from cenrep
+    TBuf<KCRMaxLen> str;
+
+    for (TInt i(KCenrepFieldsStartKey); i < KCenrepFieldsStartKey
+            + KCenrepNumberOfFieldsCount; i++)
+        {
+        TInt err = repository->Get(i, str);
+
+        if (KErrNone != err)
+            {
+            break;
+            }
+
+        if (str != KNullDesC)
+            {
+            TLex lex(str);
+
+            // Extract the URI
+            TPtrC token = lex.NextToken();
+
+            if (aURI.Compare(token) == 0)
+                {
+                // Extract the sort order
+                token.Set(lex.NextToken());
+
+                while (token.Length() != 0)
+                    {
+                    TLex lex1(token);
+
+                    TInt intVal;
+                    TInt err = lex1.Val(intVal);
+
+                    if (KErrNone == err)
+                        {
+                        aSortOrder.Append(intVal);
+                        }
+
+                    // Next token
+                    token.Set(lex.NextToken());
+                    }
+
+                break;
+                }
+            }
+
+        }
+
+    delete repository;
+
+    PRINT ( _L("End CPcsAlgorithm2::ReadSortOrderFromCenRepL.") );
+    }
+
+// ---------------------------------------------------------------------------------
+// Write the sort order into the central repository
+// Persisted sort order is of form URI Field1 Field2 Field3 .. FieldN (space delimited)
+// ---------------------------------------------------------------------------------
+void CPcsAlgorithm2::WriteSortOrderToCenRepL(TDesC& aURI, RArray<TInt>& aSortOrder)
+    {
+    PRINT ( _L("Enter CPcsAlgorithm2::WriteSortOrderToCenRepL.") );
+
+    CRepository *repository = CRepository::NewL(KCRUidPSSortOrder);
+
+    // Check if there an entry for this URI in cenrep
+    TBuf<KCRMaxLen> str;
+    TInt keyIndex = -1;
+
+    for (TInt i(KCenrepFieldsStartKey); i < KCenrepFieldsStartKey
+            + KCenrepNumberOfFieldsCount; i++)
+        {
+        TInt err = repository->Get(i, str);
+
+        if (KErrNone != err)
+            {
+            PRINT ( _L("CPcsAlgorithm2::WriteSortOrderToCenRepL. cenrep error.") );
+            return;
+            }
+
+        if (str != KNullDesC)
+            {
+            TLex lex(str);
+
+            // Extract the URI
+            TPtrC token = lex.NextToken();
+
+            if (aURI.Compare(token) == 0)
+                {
+                keyIndex = i; // i has the key index for this URI
+                break;
+                }
+            }
+        }
+
+    // No entry for this URI in cenrep
+    // Find the next free location in cenrep
+    if (keyIndex == -1)
+        {
+        // Find the next free key index
+        for (TInt i(KCenrepFieldsStartKey); i < KCenrepFieldsStartKey
+                + KCenrepNumberOfFieldsCount; i++)
+            {
+            TInt err = repository->Get(i, str);
+
+            if (KErrNone != err)
+                {
+                PRINT ( _L("CPcsAlgorithm2::WriteSortOrderToCenRepL. cenrep error.") );
+                return;
+                }
+
+            if (str == KNullDesC)
+                {
+                keyIndex = i; // i has the next free location
+                break;
+                }
+            }
+        }
+
+    if (keyIndex == -1)
+        {
+        PRINT ( _L("CPcsAlgorithm2::WriteSortOrderToCenRepL. Persist limit violated.") );
+        return;
+        }
+
+    // Persist the sort order
+    HBufC* str1 = HBufC::NewL(KCRMaxLen);
+    TPtr ptr(str1->Des());
+
+    // Append the URI
+    ptr.Append(aURI);
+    ptr.Append(KSpace);
+
+    // Append the sort order fields
+    for (int j = 0; j < aSortOrder.Count(); j++)
+        {
+        ptr.AppendNum(aSortOrder[j]);
+        ptr.Append(KSpace);
+        }
+
+    // Write to persistent store
+    TInt err = repository->Set(keyIndex, ptr);
+
+    User::LeaveIfError(err);
+
+    delete str1;
+
+    delete repository;
+
+    PRINT ( _L("End CPcsAlgorithm2::WriteSortOrderToCenRepL.") );
+    }
+
+// ---------------------------------------------------------------------------------
+// WriteClientDataL.
+// Write the content required by client
+// ---------------------------------------------------------------------------------
+CPsClientData* CPcsAlgorithm2::WriteClientDataL(CPsData& aPsData)
+    {
+    CPsClientData* clientData = CPsClientData::NewL();
+    CleanupStack::PushL(clientData);
+
+    // set Id
+    clientData->SetId(aPsData.Id());
+
+    // set Uri
+    clientData->SetUriL(GetUriForIdL(aPsData.UriId()));
+
+    // set pointer to the each data element
+    for (TInt i = 0; i < aPsData.DataElementCount(); i++)
+        {
+        clientData->SetDataL(i, *(aPsData.Data(i)));
+        }
+
+    // set data extension
+    clientData->SetDataExtensionL(aPsData.DataExtension());
+
+    // Set the Field match
+    clientData->SetFieldMatch(aPsData.DataMatch());
+    CleanupStack::Pop(clientData);
+
+    return clientData;
+    }
+
+void CPcsAlgorithm2::ReconstructCacheDataL()
+    {
+    PRINT ( _L("Enter CPcsAlgorithm2::ReconstructCacheDataL.") );
+
+    TInt err;
+    TRAP( err, iKeyMap->ReconstructKeymapL());
+    if (err != KErrNone)
+        {    
+        PRINT1 ( _L("keyMap ReconstructKeymapL, err =%d"),err );
+        }
+    
+    for (int index = 0; index < iCacheCount; index++)
+        {
+        CPcsCache* cache = iPcsCache[index];
+
+        HBufC * uri = cache->GetUri();
+        // Clear the cache
+        TRAP(err, cache->RemoveAllFromCacheL());   
+        PRINT1 ( _L("cache RemoveAllFromCacheL, err =%d"),err );
+
+        if (err != KErrNone)
+            {
+            SetCachingError(*uri, err);
+            }
+        //Update the caching status as ECachingInProgress, since now the caching
+        // would be strated again
+        UpdateCachingStatus(*uri, ECachingInProgress);
+
+        // Request for data again
+        TRAP(err, iPsDataPluginInterface->RequestForDataL(*uri));        
+        PRINT1 ( _L("iPsDataPluginInterface->RequestForDataL, err =%d"),err );
+
+        if (err != KErrNone)
+            {
+            SetCachingError(*uri, err);
+            }
+        }
+    }
+
+void CPcsAlgorithm2::Converter(const TDesC& aSourStr, TDes& aDestStr)
+    {
+    if (iKeyMap)
+        {
+        iKeyMap->GetNumericKeyString(aSourStr, aDestStr);
+        }
+    }
+
+// ---------------------------------------------------------------------------------
+// DoLaunchPluginsL.
+// launch plugins by idle
+// ---------------------------------------------------------------------------------
+TInt CPcsAlgorithm2::DoLaunchPluginsL(TAny* aPtr)
+    {
+    CPcsAlgorithm2* ptr = (CPcsAlgorithm2*) aPtr;
+    ptr->DoLaunchPluginsL();
+    return EFalse;
+    }
+
+// ---------------------------------------------------------------------------------
+// DoLaunchPluginsL.
+// lauch plugins
+// ---------------------------------------------------------------------------------
+void CPcsAlgorithm2::DoLaunchPluginsL()
+    {
+    // Initialize available data adapters
+    iPsDataPluginInterface = CPsDataPluginInterface::NewL(this, this);
+    iPsDataPluginInterface->InstantiateAllPlugInsL();
+
+    // Store the cache list in TLS
+    // Required to support sort order changes in a memory efficient way
+    // This avoids storing sort order information in the CPsData element
+    // and storing it in CPcsCache. Refer CPcsAlgorithm2Utils::CompareDataBySortOrder
+    // to see how this is being used.
+    User::LeaveIfError(Dll::SetTls(&iPcsCache));
+
+    // Initialize cache
+    RPointerArray<TDesC> dataStores;
+
+    iPsDataPluginInterface->GetAllSupportedDataStoresL(dataStores);
+
+    for (int dIndex = 0; dIndex < dataStores.Count(); dIndex++)
+        {
+        AddDataStore(*(dataStores[dIndex]));
+        }
+
+    dataStores.Reset();
+    }
+// End of file
+