author | Dominic Pinkman <dominic.pinkman@nokia.com> |
Wed, 16 Jun 2010 10:24:13 +0100 | |
changeset 10 | d4524d6a4472 |
parent 0 | 89d6a7a84779 |
permissions | -rw-r--r-- |
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89d6a7a84779
Initial contribution of Documentation_content according to Feature bug 1266 bug 1268 bug 1269 bug 1270 bug 1372 bug 1374 bug 1375 bug 1379 bug 1380 bug 1381 bug 1382 bug 1383 bug 1385
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
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<?xml version="1.0" encoding="utf-8"?> |
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<!-- Copyright (c) 2007-2010 Nokia Corporation and/or its subsidiary(-ies) All rights reserved. --> |
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<!-- This component and the accompanying materials are made available under the terms of the License |
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"Eclipse Public License v1.0" which accompanies this distribution, |
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and is available at the URL "http://www.eclipse.org/legal/epl-v10.html". --> |
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<!-- Initial Contributors: |
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Nokia Corporation - initial contribution. |
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Contributors: |
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--> |
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<!DOCTYPE concept |
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PUBLIC "-//OASIS//DTD DITA Concept//EN" "concept.dtd"> |
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<concept id="GUID-AB705D21-87A3-5F32-A4B9-17B7593DD5C3" xml:lang="en"><title>UID |
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Manipulation Overview</title><shortdesc>Describes how globally unique identifiers are manipulated.</shortdesc><prolog><metadata><keywords/></metadata></prolog><conbody> |
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<section id="GUID-78302F5A-97C3-4B95-9F72-842D91C2C25C"><title>Purpose</title> <p>To guarantee uniqueness, |
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all UID values are assigned to developers centrally by Symbian. </p> </section> |
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<section id="GUID-0600181A-2383-419B-BB57-2833C05F9AE3"><title>Architectural relationships</title> <p>Symbian platform makes |
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extensive use of UIDs to provide lightweight identification of file types. |
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This includes both document and executable files. APIs that need to manipulate |
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files therefore typically use UIDs.</p> </section> |
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<section id="GUID-B4652BA6-A500-4F3E-9AFF-02C339706B2B"><title>Description</title> <p>The API has two key concepts: UID and |
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compound identifier. </p> <p><b>UID</b> </p> <p>The |
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UID is a small wrapper class around a 32-bit value that provides comparison |
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operators and conversion to text.</p> <p>The UID interface is provided by <xref href="GUID-530281E6-29FC-33F2-BC9B-610FBA389444.dita"><apiname>TUid</apiname></xref>.</p> <p><b>Compound identifier</b> </p> <p>The compound identifier is a group of |
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up to three UIDs that identify the type of a file. The meaning of the UIDs |
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varies according to whether the file is a DLL, or document file, etc. </p> <p>The |
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compound identifier interface is provided by <xref href="GUID-B6D6B0AD-B15C-339A-8540-40540885089A.dita"><apiname>TUidType</apiname></xref>.</p> </section> |
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<section id="GUID-ECF8B994-B8F0-4EC4-8CE8-06F031541D79"><title>See also</title> <p><xref href="GUID-260C7ACD-0024-59DE-B1C6-0C852E44C457.dita">Dynamically |
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Loading Link Libraries Overview</xref> </p> <p><xref href="GUID-B69FE02E-3A78-5438-BA7C-F7BB4CD3EB76.dita">File |
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Server Client Side Overview</xref> </p> <p><xref href="GUID-21CF1D5F-44C5-5407-B3C9-8BC103C97079.dita">File |
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Stores Overview</xref> </p> </section> |
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</conbody></concept> |