Developers Manual 1.20

1. Defining the Object Model

1.1 Specifying a Class

In the simplest case, just the class of object held is needed. Supported classes are:

• Integer
• Float
• String
• Date
• Boolean
• Time
• TimeStamp

Example (for an imaginary class Person)

define: #surname as: String;
define: #dateOfBirth as: Date;
define: #annualSalary as: Float;
define: #isMarried as: Boolean;
define: #numberOfChildren as: Integer;

Additionally, any other class defining an addClassDefinitionTo: method may be used. This allows your classes to reference each other or even themselves:

define: #sex as: Gender;
define: #homeAddress as: Address;
define: #workAddress as: Address;
define: #spouse as: Person

1. Defining Classes

• 1.1 Specifying a Class

• 1.2 Specifying a Parameterised Class

• 1.3 Specifying Collections

• 1.4 Dictionaries

• 1.5 Dependent Relationships

• 1.6 Inheritance

• 1.7 Creating and Maintaining Tables