<?xml version="1.0" encoding="utf-8"?>

<!-- Copyright (c) 2007-2010 Nokia Corporation and/or its subsidiary(-ies) All rights reserved. -->

<!-- This component and the accompanying materials are made available under the terms of the License 

"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: 

-->

<!DOCTYPE concept

  PUBLIC "-//OASIS//DTD DITA Concept//EN" "concept.dtd">

<concept id="GUID-50AB1B77-1912-5C73-A1B5-41220E7A2EA5" xml:lang="en"><title>Store

map as repository for Swizzles and associated stream IDs</title><shortdesc>This document describes using a store map as a repository for Swizzles

and associated stream IDs.</shortdesc><prolog><metadata><keywords/></metadata></prolog><conbody>

<p>A store map is a table of entries where each entry consists of a Swizzle

and a stream ID.</p>

<p>When the in-memory object represented by a Swizzle is externalised, the

resulting stream ID and the associated Swizzle can be added to a store map.

The effect is to create an entry in the store map table containing the stream

ID and the associated Swizzle; the Swizzle is said to be bound to the stream

ID. Creating this entry in the store map is done using <codeph>CStoreMap::BindL()</codeph>.</p>

<p>For a container type class <codeph>CCompound</codeph>, the diagram below

shows the result of:</p>

<ul>

<li id="GUID-B49D7824-7128-506F-B026-A6F4785C5C94"><p>streaming out the in-memory

objects represented by the Swizzles <codeph>iA</codeph>, <codeph>iB</codeph> and <codeph>iC</codeph>.</p> </li>

<li id="GUID-F3352249-7B90-5F90-B706-A01DC2C87C41"><p>binding the swizzles

with the resulting stream IDs</p> </li>

</ul>

<p>The other characteristics of a store map follow from this. </p>

<fig id="GUID-16CAA671-B195-558E-868A-46463EDEB476">

<title/>

<image href="GUID-4028CDCF-D2E8-5668-A751-A7CFA86CED46_d0e363900_href.png" placement="inline"/>

</fig>

<p>Entries in the store map can be deleted. An entry can be identified either

by Swizzle or by stream ID. <codeph>CStoreMap::Unbind()</codeph> deletes an

entry identified by Swizzle; <codeph>CStoreMap::Forget()</codeph> deletes

an entry identified by stream ID.</p>

</conbody></concept>