• What Does Enterprise Objects Do?

• Why Enterprise Objects?

• What Is an Enterprise Object?

• Core Layers

• Key Concepts of Object-Oriented Programming

• Key-Value Coding

• Delegation

• Notification

• Principal Methods of Enterprise Objects

• Reference Entity

• Designing a Schema

• Defining the Model

• Which Enterprise Object Class?

• Choosing Class Properties

• Relationships With Other Enterprise Objects

• Referential Integrity

• Implementing an Enterprise Object

• Generating Source Files

• Fields

• Change Notification

• Faulting

• Accessing an Enterprise Object’s Data

• Error Handling for Accessors

• Common Programming Errors

• Overriding equals or hashcode

• Immutable Primary Keys

• Primary Keys and Allows Null

• Synchronizing Model Changes to Class Files

• Instantiating Enterprise Objects

• Custom Classes

• Providing Initial Values

• Adding Validation

• Validating Before Certain Operations

• Validating Individual Properties

• Writing Business Methods

• Manipulating Relationships

• Building a Reusable Framework

• Roles

• Important Objects

• How It Stacks Up

• The Access-Control Divide

• Object Store Coordinator

• When to Use Multiple Object Store Coordinators

• Why So Many Object Stores?

• Providing Separate Stacks

• Accessing Lower-Level Objects

• Objects Involved in Fetching

• Flow of Data During a Fetch

• Enterprise Object Initialization

• Faulting and Relationship Resolution

• Data Integrity Mechanisms

• Uniquing

• Snapshotting

• Uniquing and Faulting

• Ensuring Fresh Data

• When Does Database Fetching Occur?

• Distributed Change Notification?

• Fetch Timestamp

• Timestamp Lag

• Other Mechanisms to Ensure Freshness

• Advanced Faulting

• Deferred Faulting

• Batch Faulting

• Advanced Fetching

• Prefetching

• Entity Caching

• Raw Row Fetching

• Raw SQL Fetching

• Common Delegate Usage

• Constructing Fetch Specifications

• Qualifiers

• Simple String Qualifier

• Simple Integer Qualifier

• Wildcard Qualifiers

• Compound Qualifiers

• Filtering Fetch Results in Memory

• Sorting Fetch Results in Memory

• Accessing Database Keys

• Objects Involved in Managing the Object Graph

• Getting Information About Changed Objects

• Undoing Changes

• Discarding Changes

• Discarding Cached Objects

• Refreshing Cached Data

• Working With Objects in Multiple Editing Contexts

• Memory Management

• Objects Involved in Saving

• Phases of Saving

• Flow of Data During a Save

• Key Generation

• Common Delegate Usage

• Generating Custom Primary Keys

• Using a Delegate

• Using Binary Keys

• Using Compound Primary Keys

• Choosing a Strategy

• Inside Optimistic Locking

• Multiple Coordinators and Optimistic Locking

• Using Optimistic Locking

• Prevention

• Recovery

• Recovering and Refaulting

• Recovering and Last Write Wins

• Objects Involved in a Database Connection

• When Database Connections Are Opened

• When Database Connections Are Closed

• Connection Dictionary

• Storing in a Model File

• Storing in Code

• Connecting to Multiple Data Stores

• Database Channels

• Providing a Connection Dictionary in Code

• Providing Multiple Database Channels

• Closing Database Channels

• Determining Requirements

• Maintaining Thread Integrity

• Accessing WebObjects in Enterprise Objects

• Enterprise Objects in WebObjects Builder

• Creating and Initializing Objects

• Fetching and Accessing Data

• Identifying and Tracking Objects

• Working With Fetch Results

• Manipulating and Changing Objects