Apple WebObjects 3.5 - Manual (Page 119)

Adding Behavior to Your Enterprise Objects
119
Adding Custom Behavior to Talent
Now add the fullName method to Talent and bind it to the browser.
1. Open Talent.java in Project Builder.
The class file declares instance variables for all of Talent’s class
properties (
firstName and lastName ) and implements set and get methods
for those instance variables.
2. Add the method, fullName , as follows.
public String fullName() { return firstName() + " " + lastName(); }
After you save, fullName appears in the object browser of WebObjects
Builder as a property of Talent.
3. Bind talent.fullName to the browser’s value attribute.
Providing Default Values in MovieRole
As discussed in “Specifying Default Values for New Enterprise Objects”
(page 87), there are two main ways to specify default values for new
enterprise objects without making explicit assignments:
• Assign default values in the enterprise object class.
• Specify default values using a display group.
For the Movie class, you specified default values using a display group. This
approach is also the more appropriate choice for the MovieRole class, but
you’ll use the other approach for MovieRole just to see how its done.
1. Open MovieRole.java in Project Builder.
2. Add the method, awakeFromInsertionInEditingContext , as follows.
public void awakeFromInsertionInEditingContext(EditingContext
context) {
super.awakeFromInsertionInEditingContext(context);
roleName = "New Role";
}
This method is automatically invoked right after your enterprise object
class creates a new MovieRole and inserts it into an editing context,
which happens when you use a display group to insert.