predictivesearch/PcsAlgorithm/Algorithm2/inc/CPcsAlgorithm2Utils.h
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Thu, 19 Aug 2010 09:41:07 +0300
branchRCL_3
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/*
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* Copyright (c) 2006-2007 Nokia Corporation and/or its subsidiary(-ies).
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* All rights reserved.
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* This component and the accompanying materials are made available
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* under the terms of "Eclipse Public License v1.0"
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* which accompanies this distribution, and is available
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* at the URL "http://www.eclipse.org/legal/epl-v10.html".
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*
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* Initial Contributors:
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* Nokia Corporation - initial contribution.
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*
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* Contributors:
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*
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* Description:  Identifies a contact in cache pools
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*
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*/
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#ifndef C_PCS_ALGORITHM_2_UTILS
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#define C_PCS_ALGORITHM_2_UTILS
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// INCLUDE FILES
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#include <e32base.h>
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// FORWARD DECLARATION
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class CPsData;
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class CPsQuery;
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struct TPsMatchLocation;
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typedef RPointerArray<CPsData> CPSDATA_R_PTR_ARRAY;
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// CLASS DECLARATION
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class CPcsAlgorithm2Utils : public CBase
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    {
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public:
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    /**
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     * Merge function to merge the search results from different arrays
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     * into a single array in sorted order.
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     * It merges all the result sets that are there in iSearchResultsArr
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     * into single result set. This is a wrapper funciton implemented that
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     * works for all type of key board modes
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     */
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    static void FormCompleteSearchResultsL(RPointerArray<CPSDATA_R_PTR_ARRAY>& aSearchResultsArr,
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                                           RPointerArray<CPsData>& aSearchResults);
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    /**
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     * Customized CompareC
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     */
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    static TInt MyCompareC(const TDesC& aLeft, const TDesC& aRight);
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    /**
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     * TLinearOrder rule for comparison of data objects
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     */
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    static TInt CompareDataBySortOrder(const CPsData& aObject1, const CPsData& aObject2);
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    /**
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     * TIdentityRelation rule for comparing descriptors case-sensitively.
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     */
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    static TBool CompareExact(const TDesC& aFirst, const TDesC& aSecond);
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    /**
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     * TLinearOrder rule for comparing queries by length
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     */
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    static TInt CompareLength(const CPsQuery& aFirst, const CPsQuery& aSecond);
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    /**
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     * Trim off all white spaces and special chars
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     */
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    static void MyTrim(TDes& aString);
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    /**
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     * Check if the input URI is of contact search in a group template form
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     */
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    static TBool IsGroupUri(TDesC& aURI);
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    /**
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     * Constructs a bit pattern using the required/supported data fields
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     * For example, 6, 4 and 27 are supported fields <-- 00000111
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     *              6 and 4 are required fields      <-- 00000011
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     * Bit pattern returned is 00000011.
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     */
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    static TUint8 FilterDataFieldsL(const RArray<TInt>& aRequiredDataFields,
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                                    const RArray<TInt>& aSupportedDataFields);
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    /**
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     * Create upper-case match sequence buffer from matching part and append it to
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     * array unless there's equal sequence already present.
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     */
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    static void AppendMatchToSeqL( RPointerArray<TDesC>& aMatchSeq, const TDesC& aMatch );
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    /**
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     * Check if two match location items have overlapping indices.
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     */
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    static TBool MatchesOverlap( const TPsMatchLocation& aFirst, const TPsMatchLocation& aSecond );
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    };
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// CleanupStack helpers for item owning RPointerArrays
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template <class T>
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class CleanupResetAndDestroy
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    {
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public:
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    inline static void PushL(T& aRef)
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        { CleanupStack::PushL(TCleanupItem(&ResetAndDestroy,&aRef)); }
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private:
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    inline static void ResetAndDestroy(TAny *aPtr)
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        { static_cast<T*>(aPtr)->ResetAndDestroy(); }
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    };
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template <class T>
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inline void CleanupResetAndDestroyPushL(T& aRef)
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    { CleanupResetAndDestroy<T>::PushL(aRef); }
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#endif // C_PCS_ALGORITHM_2_UTILS