Names of design patterns appear in small capitals: e.g., ADAPTER. Page numbers in bold indicate the definition of a term. Numbers in italics indicate a diagram for the term. Letters after a diagram's page number indicate the kind of diagram: a "c" denotes a class diagram, an "i" denotes an interaction diagram, and an "o" denotes an object diagram. For example, 88co means that a class and object diagram appears on page 88.

O

object 11, 361

adapter, see adapter, object

acquaintance 22

aggregation 22

as argument to request 345

aspect of 298

avoiding dependence on implementation of 24

composition, see object composition

finding

granularity of, see also Flyweight 13

guts 179

reference 361

shared, see Flyweight

skin 179

specifying implementation of 14

specifying interface to 13

object composition 18, 361

compared with inheritance 18-20

compared with parameterized types 22

reuse through 19

object diagram 364, 361

Objects for STATEs, see STATE

Object Modeling Technique 7, 14, 363, 364

Objective C 90, 120, 121, 135, 144

Objectory 363

ObjectWindows

use of ITERATOR 270

use of Strategy 323

ObjectWorks\Smalltalk, see also Smalltalk

use of ADAPTER 148-149

use of DECORATOR 182

use of Facade 191

OBSERVER 293

combined with MEDIATOR 278, 282

compared with CHAIN OF RESPONSIBILITY 346, 348

compared with MEDIATOR 346, 348

in Model/View/Controller 5

in catalog summary 8

limiting unexpected updates in 296

OBSERVER 300

combining with Subject 300

participant of OBSERVER 294c, 295, 295i, 300c, 347i

OMT, see Object Modeling Technique

operation 11, 361

abstract 15, 359

adding to classes 335

avoiding dependence on specific 24

class, see class operation

concrete 327

dispatch, see dispatch

hook, see hook operation

overriding 16

primitive 327, 329

Orbix

use of FACTORY METHOD 116

Originator

participant of MEMENTO 285, 285c, 286i

originator 284

overloading

used to implement PROXY 211

used to implement VISITOR 72, 337