Current Symbian^3 public API header files (from PDK 3.0.h)
This is the epoc32/include tree with the "platform" subtrees removed, and
all but a selected few mbg and rsg files removed.
/*
* Copyright (c) 2005-2006 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: CPosLmItemIterator class
*
*/
#ifndef CPOSLMITEMITERATOR_H
#define CPOSLMITEMITERATOR_H
#include <e32base.h>
#include "EPos_Landmarks.h"
/**
* Landmark item iterator.
*
* This is an abstract base class for objects which iterates a set of database
* items in a single database.
*
* A database item is an item which is stored in a landmark database, i.e. a
* landmark or a landmark category.
*
* Note that an iterator either iterates categories or landmarks. The items are
* never mixed.
*
* This class does not export a constructor. The instance is created by the
* operation which generates the item set to be iterated. The iterator may
* implement a caching scheme, but that scheme depends on what is iterated.
*
* @lib eposlandmarks.lib
* @since S60 3.0
*/
class CPosLmItemIterator : public CBase
{
public:
/**
* Destructor.
*/
IMPORT_C virtual ~CPosLmItemIterator();
public:
/**
* Returns the next database item ID in the iterated set.
*
* The first call will return the first database item ID in the set.
*
* @return The next database item ID, or @p KPosLmNullItemId if there
* are no more database items in the iterated set.
*/
virtual TPosLmItemId NextL() = 0;
/**
* Resets the database item iterator.
*
* The next call to @ref NextL will return the first database item ID in
* the iterated set.
*/
virtual void Reset() = 0;
/**
* Returns the number of database items which are iterated.
*
* @return Number of items in the iterated database item set.
*/
virtual TUint NumOfItemsL() = 0;
/**
* Fetches a sequence of database items from the iterated set.
*
* The client supplies an ID array which will be filled by this
* operation. The array will be reset before any items are added.
*
* The client specifies which database item sequence to fetch by
* supplying a start index (0 is the first item) and the number of items
* to fetch.
*
* @param[out] aIdArray On return contains the requested items.
* @param[in] aStartIndex The index of the first item to fetch.
* @param[in] aNumOfItems The number of items to fetch
*
* @panic "Landmarks Client"-EPosSpecifiedIntervalLiesOutsideIteratedSet
* specified interval lies [partially] outside the iterated set.
*/
virtual void GetItemIdsL(
RArray<TPosLmItemId>& aIdArray,
TInt aStartIndex,
TInt aNumOfItems
) = 0;
protected:
// C++ constructor.
IMPORT_C CPosLmItemIterator();
private:
// Prohibit copy constructor
CPosLmItemIterator( const CPosLmItemIterator& );
// Prohibit assigment operator
CPosLmItemIterator& operator= ( const CPosLmItemIterator& );
};
#endif // CPOSLMITEMITERATOR_H