Apple WebObjects 3.5 Bedienungsanleitung PDF herunterladen (Seite 108)

Chapter 3 Creating a WebObjects Database Application

108

6. Check the “Fetches on load” box.

When “Fetches on load” is selected, the display group fetches its objects as

soon as the component is loaded into the application. You want this feature

in the MovieDetails page so that users are immediately presented with the

selected movie’s roles. In contrast, the Main page does not fetch on load; it

shouldn’t present a list of movies until the user has entered search criteria

and clicked Match.

7. Click OK.

8. In Project Builder, modify MovieDetail’s

setSelectedMovie method to look like

the following:

public void setSelectedMovie(EnterpriseObject newSelectedMovie) {

selectedMovie = newSelectedMovie;

// Add this line.

movieRoleDisplayGroup.setMasterObject(newSelectedMovie);

}

With this addition, whenever a user navigates to the MovieDetails page,

setSelectedMovie updates the movieRoleDisplayGroup’s master object so it displays

the corresponding MovieRole objects.

Adding a Repetition

Now you’ll extend the user interface of the MovieDetails component to display

the actors in the selected movie. Because different movies have different

numbers of roles, you need the dynamism of a repetition element. When you’re

done adding the repetition, your component should look like this:

1 2 ... 103 104 105 106 107 108 109 110 111 112 113 ... 119 120

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Apple WebObjects 3.5 Bedienungsanleitung Seite 108