Java Data Objects 2003.pdf

Java™ Data Objects

Java™ Data Objects

ROBIN M. ROOS

London · Boston · Indianapolis · New York · Mexico City · Toronto

Sydney · Tokyo · Singapore · Hong Kong · Cape Town · New Delhi

Madrid · Paris · Amsterdam · Munich · Milan · Stockholm

Pearson Education Limited

Head Office:

London Office:

Edinburgh Gate

128 Long Acre

Harlow CM20 2JE

London WC2E 9AN

Tel: +44 (0)1279 623623

Tel: +44 (0)20 7447 2000

Fax: +44 (0)1279 431059

Fax: +44 (0)20 7447 2170

Website: www.it-minds.com

www.awprofessional.com

First published in Great Britain in 2003

The rights of Robin M. Roos to be identified as Author of this Work have been asserted by him in

accordance with the Copyright, Designs and Patents Act 1988.

ISBN 0-321-12380-8

British Library Cataloguing in Publication Data

A CIP catalogue record for this book can be obtained from the British Library.

Library of Congress Cataloging in Publication Data

Roos, Robin M., 1969-

Java data objects / Robin M. Roos.

p. cm.

Includes bibliographical references and index.

ISBN 0-321-12380-8 (pbk.)

1. Java (Computer program language) 2. Application program interfaces (Computer

software) 3. Object-oriented programming (Computer science) 4. Computer

software--Standards. I. Title.

QA76.73.J38 R67 2002

005.13'3--dc21

2002074864

or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, or

otherwise without either the prior written permission of the Publishers or a licence permitting

restricted copying in the United Kingdom issued by the Copyright Licensing Agency Ltd,

90 Tottenham Court Road, London W1P 0LP. This book may not be lent, resold, hired out or

otherwise disposed of by way of trade in any form of binding or cover other than that in which it is

published, without the prior consent of the Publishers.

The programs in this book have been included for their instructional value. The publisher does not

offer any warranties or representations in respect of their fitness for a particular purpose,

nor does the publisher accept any liability for any loss or damage arising from their use.

Many of the designations used by manufacturers and sellers to distinguish their

products are claimed as trademarks. Pearson Education Limited has made every

attempt to supply trademark information about manufacturers and their products mentioned

in this book.

Trademark Notice

Java™ is a registered trademark of Sun Microsystems.

10 9 8 7 6 5 4 3 2 1

Typeset by Pantek Arts Ltd, Maidstone, Kent

Printed and bound in the UK by Biddles Ltd of Guildford and King’s Lynn

The Publishers’ policy is to use paper manufactured from sustainable forests .

Contents

Acknowledgements ix

Foreword xi

Preface xiii

What is JDO? xiii

To whom will JDO be important? xiv

Who should read this book? xiv

Organization xv

CD contents xvi

JDO version information xvii

About the author xvii

About the cover illustration xvii

1 Understanding object persistence 1

1.1

What is object persistence? 2

1.2

Current techniques for persistence 2

1.3

Object persistence with JDO 5

1.4

JDO positioning 8

What’s next? 9

2 Developing a simple example 10

2.1

Order processing domain 10

2.2

Discussion 15

2.3

Application source code 18

What’s next? 20

3 JDO architecture 21

3.1

JDO implementations and vendors 21

3.2

JDO instances 22

3.3

JDO environments 22

3.4

Persistent vs. transient 25

Plik z chomika:

Inne pliki z tego folderu:

Inne foldery tego chomika: