Who This Book Is For.
Acknowledgements.
Colophon.
The Evolution of Layers in Enterprise
Applications.
The Three Principal Layers.
Choosing Where to Run Your
Layers.
Making a Choice.
Service Layer.
View Patterns.
Input Controller Patterns.
Further Reading.
The Value of Statelessness.
Session State.
Ways to Store Session State.
The Allure of Distributed Objects.
Remote
and Local Interfaces.
Where You Have to Distribute.
Working with the
Distribution Boundary.
Interfaces for Distribution.
Starting With the Domain Layer.
Down to the
Data Source.
Data Source for Transaction Script.
Data Source
Table Module (125). Data Source for
Domain Model (116). The Presentation Layer.
Some
Technology-Specific Advice.
Java and J2EE.
.NET.
Stored
Procedures.
Web Services.
Other.
Starting With the Domain Layer.
Down to the
Data Source.
Data Source for Transaction Script.
Data Source
Table Module (125). Data Source for
Domain Model (116). The Presentation Layer.
Some
Technology-Specific Advice.
Java and J2EE.
.NET.
Stored
Procedures.
Web Services.
Other Layering Schemes.
II. THE PATTERNS.
9. Domain Logic Patterns.
Transaction Script.
How It Works.
When to Use It.
The Revenue Recognition Problem.
Example: Revenue Recognition (Java).
Domain Model.
How It Works.
When to Use It.
Further Reading.
Example: Revenue Recognition (Java).
Table Module.
How It Works.
When to Use It.
Example: Revenue Recognition with a Table Module (C#).
Service Layer(by
Randy Stafford).
How It Works.
When to Use It.
Further Reading.
Example: Revenue Recognition (Java).
10. Data Source Architectural Patterns.
Table Data Gateway.
How It Works.
When to Use It.
Further Reading.
Example: Person Gateway (C#).
Example: Using
ADO.NET Data Sets (C#).
Row Data Gateway.
How It Works.
When to Use It.
Example: A Person Record (Java).
Example: A Data Holder for a Domain
Object (Java).
Active Record.
9. Domain Logic Patterns.
Transaction Script.
How It Works.
When to Use It.
The Revenue Recognition Problem.
Example: Revenue Recognition (Java).
Domain Model.
How It Works.
When to Use It.
Further Reading.
Example: Revenue Recognition (Java).
Table Module.
How It Works.
When to Use It.
Example: Revenue Recognition with a Table Module (C#).
Service Layer(by
Randy Stafford).
How It Works.
When to Use It.
Further Reading.
Example: Revenue Recognition (Java).
10. Data Source Architectural Patterns.
Table Data Gateway.
How It Works.
When to Use It.
Further Reading.
Example: Person Gateway (C#).
Example: Using
ADO.NET Data Sets (C#).
Row Data Gateway.
How It Works.
When to Use It.
Example: A Person Record (Java).
Example: A Data Holder for a Domain
Object (Java).
Active Record.
How It Works.
When to Use It.
Example: A Simple Person (Java).
Data Mapper.
How It Works.
When to Use It.
Example: A Simple Database Mapper (Java).
Example: Separating the
Finders (Java).
Example: Creating an Empty Object (Java).
11. Object-Relational Behavioral Patterns.
Unit of Work.
How It Works.
When to Use It.
Example: Unit of Work with Object Registration (Java) (by David Rice).
Identity Map.
How It Works.
When to Use It.
Example: Methods for an
Identity Map (Java).
Lazy Load.
How It Works.
When to Use It.
Example: Lazy Initialization (Java).
Example: Virtual Proxy (Java).
Example: Using a Value Holder (Java).
Example: Using Ghosts (C#).
12. Object-Relational Structural Patterns.
Identity Field.
How It Works.
When to Use It.
Further Reading.
Example: Integral Key (C#).
Example: Using a Key
Table (Java).
Example: Using a Compound Key (Java).
Foreign Key Mapping.
How It Works.
How It Works.
When to Use It.
Example: A Simple Person (Java).
Data Mapper.
How It Works.
When to Use It.
Example: A Simple Database Mapper (Java).
Example: Separating the
Finders (Java).
Example: Creating an Empty Object (Java).
11. Object-Relational Behavioral Patterns.
Unit of Work.
How It Works.
When to Use It.
Example: Unit of Work with Object Registration (Java) (by David Rice).
Identity Map.
How It Works.
When to Use It.
Example: Methods for an
Identity Map (Java).
Lazy Load.
How It Works.
When to Use It.
Example: Lazy Initialization (Java).
Example: Virtual Proxy (Java).
Example: Using a Value Holder (Java).
Example: Using Ghosts (C#).
12. Object-Relational Structural Patterns.
Identity Field.
How It Works.
When to Use It.
Further Reading.
Example: Integral Key (C#).
Example: Using a Key
Table (Java).
Example: Using a Compound Key (Java).
Foreign Key Mapping.
How It Works.
When to Use It.
Example: Single-Valued Reference (Java).
Example: Multitable Find
(Java).
Example: Collection of References (C#).
Association Table
Mapping.
How It Works.
When to Use It.
Example: Employees and Skills (C#).
Example: Using Direct SQL (Java).
Example: Using a Single Query for Multiple Employees (Java) (by Matt Foemmel
and Martin Fowler).
Dependent Mapping.
How It Works.
When to Use It.
Example: Albums and Tracks (Java).
Embedded Value.
How It Works.
When to Use It.
Further Reading.
Example: Simple Value Object (Java).
Serialized
LOB.
How It Works.
When to Use It.
Example: Serializing a Department Hierarchy in XML (Java).
Single Table
Inheritance.
How It Works.
When to Use It.
Example: A Single Table for Players (C#).
Loading an Object from the
Database.
Class Table Inheritance.
How It Works.
When to Use It.
Further Reading.
Example: Players and Their Kin (C#).
Concrete Table
Inheritance.
How It Works.
When to Use It.
Example: Concrete PlayeDIV>
When to Use It.
Example: Single-Valued Reference (Java).
Example: Multitable Find
(Java).
Example: Collection of References (C#).
Association Table
Mapping.
How It Works.
When to Use It.
Example: Employees and Skills (C#).
Example: Using Direct SQL (Java).
Example: Using a Single Query for Multiple Employees (Java) (by Matt Foemmel
and Martin Fowler).
Dependent Mapping.
How It Works.
When to Use It.
Example: Albums and Tracks (Java).
Embedded Value.
How It Works.
When to Use It.
Further Reading.
Example: Simple Value Object (Java).
Serialized
LOB.
How It Works.
When to Use It.
Example: Serializing a Department Hierarchy in XML (Java).
Single Table
Inheritance.
How It Works.
When to Use It.
Example: A Single Table for Players (C#).
Loading an Object from the
Database.
Class Table Inheritance.
How It Works.
When to Use It.
Further Reading.
Example: Players and Their Kin (C#).
Concrete Table
Inheritance.
How It Works.
When to Use It.
Example: Concrete Players (C#).
Inheritance Mappers.
How It Works.
When to Use It.
13. Object-Relational Metadata Mapping Patterns.
Metadata Mapping.
How It Works.
When to Use It.
Example: Using Metadata and Reflection (Java).
Query Object.
How It Works.
When to Use It.
Further Reading.
Example: A Simple
Query Object (Java).
Repository (by Edward Hieatt and Rob Mee).
How It Works.
When to Use It.
Further Reading.
Example: Finding a Person's Dependents (Java).
Example: Swapping Repository Strategies (Java).
14. Web Presentation Patterns.
Model View Controller.
How It Works.
When to Use It.
Page Controller.
How It Works.
When to Use It.
Example: Simple Display with a Servlet Controller and a JSP View (Java).
Example: Using a JSP as a Handler (Java).
Example: Page Handler with a
Code Behind (C#).
Front Controller.
How It Works.
When to Use It.
Further Reading.
Example: Simple Disprs (C#).
Inheritance Mappers.
How It Works.
When to Use It.
13. Object-Relational Metadata Mapping Patterns.
Metadata Mapping.
How It Works.
When to Use It.
Example: Using Metadata and Reflection (Java).
Query Object.
How It Works.
When to Use It.
Further Reading.
Example: A Simple
Query Object (Java).
Repository (by Edward Hieatt and Rob Mee).
How It Works.
When to Use It.
Further Reading.
Example: Finding a Person's Dependents (Java).
Example: Swapping Repository Strategies (Java).
14. Web Presentation Patterns.
Model View Controller.
How It Works.
When to Use It.
Page Controller.
How It Works.
When to Use It.
Example: Simple Display with a Servlet Controller and a JSP View (Java).
Example: Using a JSP as a Handler (Java).
Example: Page Handler with a
Code Behind (C#).
Front Controller.
How It Works.
When to Use It.
Further Reading.
Example: Simple Display (Java).
Template View.
How It Works.
When to Use It.
Example: Using a JSP as a View with a Separate Controller (Java).
Example: ASP.NET Server Page (C#).
Transform View.
How It Works.
When to Use It.
Example: Simple Transform (Java).
Two Step View.
How It Works.
When to Use It.
Example: Two Stage XSLT (XSLT).
Example: JSP and Custom Tags (Java).
Application Controller.
How It Works.
When to Use It.
Further Reading.
Example: State Model
Application Controller
(Java).
15. Distribution Patterns.
Remote Facade.
How It Works.
When to Use It.
Example: Using a Java Session Bean as a Remote Facade (Java).
Example:
Web Service (C#).
Data Transfer Object.
How It Works.
When to Use It.
Further Reading.
Example: Transferring Information about Albums (Java).
Example: Serializing Using XML (Java).
16. Offline Concurrency Patterns.
Optimistic Offline Lock (by David Rice).
Howlay (Java).
Template View.
How It Works.
When to Use It.
Example: Using a JSP as a View with a Separate Controller (Java).
Example: ASP.NET Server Page (C#).
Transform View.
How It Works.
When to Use It.
Example: Simple Transform (Java).
Two Step View.
How It Works.
When to Use It.
Example: Two Stage XSLT (XSLT).
Example: JSP and Custom Tags (Java).
Application Controller.
How It Works.
When to Use It.
Further Reading.
Example: State Model
Application Controller
(Java).
15. Distribution Patterns.
Remote Facade.
How It Works.
When to Use It.
Example: Using a Java Session Bean as a Remote Facade (Java).
Example:
Web Service (C#).
Data Transfer Object.
How It Works.
When to Use It.
Further Reading.
Example: Transferring Information about Albums (Java).
Example: Serializing Using XML (Java).
16. Offline Concurrency Patterns.
Optimistic Offline Lock (by David Rice).
How It Works.
When to Use It.
Example: Domain Layer with Data Mappers (165) (Java).
Pessimistic
Offline Lock (by David Rice).
How It Works.
When to Use It.
Example: Simple Lock Manager (Java).
Coarse-Grained Lock (by David Rice
and Matt Foemmel).
How It Works.
When to Use It.
Example: Shared
Optimistic Offline Lock (416) (Java).
Example:
Shared
Pessimistic Offline Lock (426) (Java).
Example: Root
Optimistic Offline Lock (416) (Java).
Implicit Lock (by David Rice).
How It Works.
When to Use It.
Example: Implicit
Pessimistic Offline Lock (426) (Java).
17. Session State Patterns.
Client Session State.
How It Works.
When to Use It.
Server Session State.
How It Works.
When to Use It.
Database Session State.
How It Works.
When to Use It.
18. Base Patterns.
Gateway.
How It Works.
When to Use It.
Example: A Gateway to a Proprietary Messaging S It Works.
When to Use It.
Example: Domain Layer with Data Mappers (165) (Java).
Pessimistic
Offline Lock (by David Rice).
How It Works.
When to Use It.
Example: Simple Lock Manager (Java).
Coarse-Grained Lock (by David Rice
and Matt Foemmel).
How It Works.
When to Use It.
Example: Shared
Optimistic Offline Lock (416) (Java).
Example:
Shared
Pessimistic Offline Lock (426) (Java).
Example: Root
Optimistic Offline Lock (416) (Java).
Implicit Lock (by David Rice).
How It Works.
When to Use It.
Example: Implicit
Pessimistic Offline Lock (426) (Java).
17. Session State Patterns.
Client Session State.
How It Works.
When to Use It.
Server Session State.
How It Works.
When to Use It.
Database Session State.
How It Works.
When to Use It.
18. Base Patterns.
Gateway.
How It Works.
When to Use It.
Example: A Gateway to a Proprietary Messaging Service (Java).
Mapper.
How It Works.
When to Use It.
Layer Supertype.
How It Works.
When to Use It.
Example: Domain Object (Java).
Separated Interface.
How It Works.
When to Use It.
Registry.
How It Works.
When to Use It.
Example: A Singleton Registry (Java).
Example: Thread-Safe Registry
(Java) (by Matt Foemmel and Martin Fowler).
Value Object.
How It Works.
When to Use It.
Money.
How It Works.
When to Use It.
Example: A Money Class (Java) (by Matt Foemmel and Martin Fowler).
Special Case.
How It Works.
When to Use It.
Further Reading.
Example: A Simple Null Object (C#).
Plugin (by
David Rice and Matt Foemmel).
How It Works.
When to Use It.
Example: An Id Generator (Java).
Service Stub (by David Rice).
How It Works.
When to Use It.
Example: Sales Tax Service (Java).
Record Set.
How It Works.
When to Use It.
References
ervice (Java).
Mapper.
How It Works.
When to Use It.
Layer Supertype.
How It Works.
When to Use It.
Example: Domain Object (Java).
Separated Interface.
How It Works.
When to Use It.
Registry.
How It Works.
When to Use It.
Example: A Singleton Registry (Java).
Example: Thread-Safe Registry
(Java) (by Matt Foemmel and Martin Fowler).
Value Object.
How It Works.
When to Use It.
Money.
How It Works.
When to Use It.
Example: A Money Class (Java) (by Matt Foemmel and Martin Fowler).
Special Case.
How It Works.
When to Use It.
Further Reading.
Example: A Simple Null Object (C#).
Plugin (by
David Rice and Matt Foemmel).
How It Works.
When to Use It.
Example: An Id Generator (Java).
Service Stub (by David Rice).
How It Works.
When to Use It.
Example: Sales Tax Service (Java).
Record Set.
How It Works.
When to Use It.
References
