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<!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_d0e357820_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>