landmarks/locationlandmarks/localaccess/src/EPos_CPosLmLocalLandmarkIterator.cpp
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     1 /*
       
     2 * Copyright (c) 2002-2007 Nokia Corporation and/or its subsidiary(-ies). 
       
     3 * All rights reserved.
       
     4 * This component and the accompanying materials are made available
       
     5 * under the terms of "Eclipse Public License v1.0"
       
     6 * which accompanies this distribution, and is available
       
     7 * at the URL "http://www.eclipse.org/legal/epl-v10.html".
       
     8 *
       
     9 * Initial Contributors:
       
    10 * Nokia Corporation - initial contribution.
       
    11 *
       
    12 * Contributors:
       
    13 *
       
    14 * Description: Landmark iterator.
       
    15 *
       
    16 *
       
    17 */
       
    18 
       
    19 
       
    20 #include    <e32base.h>
       
    21 #include    <epos_cposlmlocaldbaccess.h>
       
    22 #include    <epos_poslmlandmarkhandler.h>
       
    23 
       
    24 #include    "epos_cposlmlocaldatabase.h"
       
    25 #include    "EPos_CPosLmLocalGetSortedIdsOp.h"
       
    26 #include    "EPos_CPosLmLocalLandmarkIterator.h"
       
    27 
       
    28 // ============================ MEMBER FUNCTIONS ===============================
       
    29 
       
    30 // -----------------------------------------------------------------------------
       
    31 // -----------------------------------------------------------------------------
       
    32 //
       
    33 CPosLmLocalLandmarkIterator::CPosLmLocalLandmarkIterator() :
       
    34     CPosLmLocalIterator(),
       
    35     iSortPref(CPosLandmark::ELandmarkName),
       
    36     iUseSort(EFalse)
       
    37     {
       
    38     }
       
    39 
       
    40 // -----------------------------------------------------------------------------
       
    41 // -----------------------------------------------------------------------------
       
    42 //
       
    43 CPosLmLocalLandmarkIterator::CPosLmLocalLandmarkIterator(
       
    44     TPosLmSortPref aSortPref) :
       
    45     CPosLmLocalIterator(),
       
    46     iSortPref(aSortPref),
       
    47     iUseSort(ETrue)
       
    48     {
       
    49     }
       
    50 
       
    51 // -----------------------------------------------------------------------------
       
    52 // -----------------------------------------------------------------------------
       
    53 //
       
    54 void CPosLmLocalLandmarkIterator::ConstructL(
       
    55     CPosLmLocalDatabase& aDb, TBool aAlreadyHasLock )
       
    56     {
       
    57     if (iUseSort && iSortPref.LandmarkAttributeToSortBy() !=
       
    58         CPosLandmark::ELandmarkName)
       
    59         {
       
    60         User::Leave(KErrNotSupported);
       
    61         }
       
    62 
       
    63     if ( iUseSort )
       
    64         {
       
    65         CPosLmLocalGetSortedIdsOp* op = CPosLmLocalGetSortedIdsOp::NewL( aDb, iSortPref );
       
    66         CleanupStack::PushL( op );
       
    67         op->ExecuteL();
       
    68         op->GetResultL( iIdArray );
       
    69         CleanupStack::PopAndDestroy( op );
       
    70         }
       
    71     else
       
    72         {
       
    73         if (!aAlreadyHasLock)
       
    74             {
       
    75             aDb.AquireLockLC(CPosLmLocalDatabase::EReadLock);
       
    76             }
       
    77     
       
    78         PosLmLandmarkHandler::GetAllLandmarkIdsL(
       
    79             *aDb.DatabaseAccess(), 
       
    80             EFalse, EFalse, 
       
    81             iIdArray );
       
    82     
       
    83         if (!aAlreadyHasLock)
       
    84             {
       
    85             CleanupStack::PopAndDestroy(); // DbLock
       
    86             }
       
    87         }
       
    88     }
       
    89 
       
    90 // -----------------------------------------------------------------------------
       
    91 // -----------------------------------------------------------------------------
       
    92 //
       
    93 CPosLmLocalLandmarkIterator* CPosLmLocalLandmarkIterator::NewL(
       
    94     CPosLmLocalDatabase& aDb, TBool aAlreadyHasLock)
       
    95     {
       
    96     CPosLmLocalLandmarkIterator* self =
       
    97         new(ELeave) CPosLmLocalLandmarkIterator();
       
    98     CleanupStack::PushL(self);
       
    99     self->ConstructL(aDb, aAlreadyHasLock);
       
   100     CleanupStack::Pop(self);
       
   101     return self;
       
   102     }
       
   103 
       
   104 // -----------------------------------------------------------------------------
       
   105 // -----------------------------------------------------------------------------
       
   106 //
       
   107 CPosLmLocalLandmarkIterator* CPosLmLocalLandmarkIterator::NewL(
       
   108     CPosLmLocalDatabase& aDb,
       
   109     TPosLmSortPref aSortPref)
       
   110     {
       
   111     CPosLmLocalLandmarkIterator* self = new(ELeave) CPosLmLocalLandmarkIterator(
       
   112         aSortPref);
       
   113     CleanupStack::PushL(self);
       
   114     self->ConstructL(aDb);
       
   115     CleanupStack::Pop(self);
       
   116     return self;
       
   117     }
       
   118 
       
   119 // -----------------------------------------------------------------------------
       
   120 // -----------------------------------------------------------------------------
       
   121 //
       
   122 CPosLmLocalLandmarkIterator::~CPosLmLocalLandmarkIterator()
       
   123     {
       
   124     }
       
   125 
       
   126 
       
   127