About This Book

This book is a guide to creating and using classes in Caché, particularly object classes and persistent classes. It consists of the following chapters:

• Introduction to Caché Objects

• Defining and Compiling Classes

• Package Options

• Defining and Referring to Class Parameters

• Defining and Calling Methods

• Working with Registered Objects

• Introduction to Persistent Objects

• Working with Persistent Objects

• Defining Persistent Classes

• Defining and Using Literal Properties

• Working with Collections

• Working with Streams

• Defining and Using Object-Valued Properties

• Defining and Using Relationships

• Other Options for Persistent Classes

• Defining Method and Trigger Generators

• Defining and Using Class Queries

• Defining and Using XData Blocks

• Defining Class Projections

• Defining Data Type Classes

• Implementing Callback Methods

• Using and Overriding Property Methods

• Implementing Dynamic Dispatch

This book also includes the following appendices:

• Object-Specific ObjectScript Features

• Using the Caché Populate Utility

• Using the %Dictionary Classes

• Using the Object Synchronization Feature

For a detailed outline, see the table of contents.

For information about related topics, see the following documents:

• Caché Programming Orientation Guide is an orientation guide for programmers who are new to Caché or who are familiar with only some kinds of Caché programming.

• The Caché Class Definition Reference provides detailed reference information about how to define classes and their members.

• Using Caché ObjectScript describes concepts and how to use the ObjectScript language.

• Using Caché Globals describes the underlying data storage mechanisms that Caché uses.

For general information, see Using InterSystems Documentation.