Apple WebObjects 3.5 Manual do Utilizador descarregar pdf (Página 83)

Examining Your Project

1. Inspect the hyperlink.

Its

action attribute is bound to the action method selectObject.

2. Look in the

Main.java class to see how selectObject is implemented.

The method (shown below) simply sets

movieDisplayGroup’s selected

object to the movie the user clicked.

public void selectObject() {

movieDisplayGroup.selectObject(movie);

}

Bindings in the Editing Part

The text ﬁelds in the editing part are all bound to attributes of the

movieDisplayGroup’s selectedObject—the movie on which the user clicked.

Typing new values into these ﬁelds updates the Movie enterprise object.

To actually save the updated values to the database, the user must click the

“Save to database” button.

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Apple WebObjects 3.5 Manual do Utilizador Página 83