Using Caché Multi-Dimensional Storage - InterSystems ...

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Using Caché Multi-Dimensional Storage Caché Version 5.1 15 June 2006 Copyright © 2006 InterSystems Corporation. All rights reserved. This book was assembled and formatted in Adobe Page Description Format (PDF) using tools and information from the following sources: Sun Microsystems, RenderX, Inc., Adobe Systems, and the World Wide Web Consortium at www.w3c.org. The primary document development tools were special-purpose XML-processing applications built by InterSystems using Caché and Java. The Caché product and its logos are trademarks of InterSystems Corporation. The Ensemble product and its logos are trademarks of InterSystems Corporation. The InterSystems name and logo are trademarks of InterSystems Corporation. This document contains trade secret and confidential information which is the property of InterSystems Corporation, One Memorial Drive, Cambridge, MA 02142, or its affiliates, and is furnished for the sole purpose of the operation and maintenance of the products of InterSystems Corporation. No part of this publication is to be used for any other purpose, and this publication is not to be reproduced, copied, disclosed, transmitted, stored in a retrieval system or translated into any human or computer language, in any form, by any means, in whole or in part, without the express prior written consent of InterSystems Corporation. The copying, use and disposition of this document and the software programs described herein is prohibited except to the limited extent set forth in the standard software license agreement(s) of InterSystems Corporation covering such programs and related documentation. InterSystems Corporation makes no representations and warranties concerning such software programs other than those set forth in such standard software license agreement(s). In addition, the liability of InterSystems Corporation for any losses or damages relating to or arising out of the use of such software programs is limited in the manner set forth in such standard software license agreement(s). THE FOREGOING IS A GENERAL SUMMARY OF THE RESTRICTIONS AND LIMITATIONS IMPOSED BY INTERSYSTEMS CORPORATION ON THE USE OF, AND LIABILITY ARISING FROM, ITS COMPUTER SOFTWARE. FOR COMPLETE INFORMATION REFERENCE SHOULD BE MADE TO THE STANDARD SOFTWARE LICENSE AGREEMENT(S) OF INTERSYSTEMS CORPORATION, COPIES OF WHICH WILL BE MADE AVAILABLE UPON REQUEST. InterSystems Corporation disclaims responsibility for errors which may appear in this document, and it reserves the right, in its sole discretion and without notice, to make substitutions and modifications in the products and practices described in this document. Caché, InterSystems Caché, Caché SQL, Caché ObjectScript, Caché Object, Ensemble, InterSystems Ensemble, Ensemble Object, and Ensemble Production are trademarks of InterSystems Corporation. All other brand or product names used herein are trademarks or registered trademarks of their respective companies or organizations. For Support questions about any InterSystems products, contact: InterSystems Worldwide Customer Support Tel: +1 617 621-0700 Fax: +1 617 374-9391 Email: support@InterSystems.com
Table of Contents 1 Introduction ..................................................................................................................... 1 1.1 Features .................................................................................................................... 1 1.2 Examples .................................................................................................................. 3 1.3 Use in Applications .................................................................................................. 4 2 Global Structure .............................................................................................................. 5 2.1 Logical Structure of Globals .................................................................................... 5 2.1.1 Global Naming Conventions .......................................................................... 5 2.1.2 Subscript Naming Conventions and Limits .................................................... 6 2.1.3 Global Data ..................................................................................................... 7 2.1.4 Global Subscripts ........................................................................................... 8 2.1.5 Collation ......................................................................................................... 8 2.2 Physical Structure of Globals ................................................................................... 8 2.2.1 How Globals Are Stored ................................................................................. 9 2.3 Referencing Globals ............................................................................................... 10 2.3.1 Setting Global Mapping ............................................................................... 10 2.3.2 Extended Global References ........................................................................ 11 3 Using Multidimensional Storage (Globals) ................................................................. 15 3.1 Storing Data in Globals .......................................................................................... 15 3.1.1 Creating Globals ........................................................................................... 15 3.1.2 Storing Data in Global Nodes ...................................................................... 16 3.1.3 Storing Structured Data in Global Nodes ..................................................... 17 3.2 Deleting Global Nodes ........................................................................................... 18 3.3 Testing the Existence of a Global Node ................................................................. 19 3.4 Retrieving the Value of a Global Node .................................................................. 19 3.4.1 The $GET Function ...................................................................................... 20 3.4.2 The WRITE, ZWRITE, and ZZDUMP Commands ..................................... 20 3.5 Traversing Data within a Global ............................................................................ 20 3.5.1 The $ORDER (Next / Previous) Function .................................................... 20 3.5.2 Looping Over a Global ................................................................................. 22 3.5.3 The $QUERY Function ................................................................................ 23 3.6 Copying Data within Globals ................................................................................. 24 3.7 Maintaining Shared Counters within Globals ........................................................ 24 3.8 Temporary Globals ................................................................................................. 25 Using Caché Multi-Dimensional Storage iii
Page 1: Using Caché Multi-Dimensional Stor
Page 5: List of Tables Bit String Operation
Page 8 and 9: Introduction ^Settings("Auto1","Pro
Page 10 and 11: Introduction 1.3 Use in Application
Page 12 and 13: Global Structure • The other char
Page 14 and 15: Global Structure 5. A bitstring. In
Page 16 and 17: Global Structure An operation on ^D
Page 18 and 19: Global Structure • The specified
Page 21 and 22: 3 Using Multidimensional Storage (G
Page 23 and 24: If you are using Caché ObjectScrip
Page 25 and 26: Testing the Existence of a Global N
Page 27 and 28: Traversing Data within a Global Set
Page 29 and 30: Traversing Data within a Global 3.5
Page 31 and 32: Temporary Globals The default stora
Page 33 and 34: Sorting Data within Globals 3.9.2 N
Page 35 and 36: Managing Transactions // Erase any
Page 37 and 38: 2. Acquire a lock (or locks) on the
Page 39 and 40: level using a naked global referenc
Page 41 and 42: 4 SQL and Object Use of Multidimens
Page 43 and 44: Data Class MyApp.Person Extends %Pe
Page 45 and 46: Data /// A LineItem class Class MyA
Page 47 and 48: Bitmap Indices Note the following t
Page 49 and 50: Bitmap Indices CHAIR 0 0 1 1 0 HAT

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