Apple WebObjects 3.5 Manual de usuario Pagina 87
- Pagina / 120
- Tabla de contenidos
- MARCADORES
Valorado. / 5. Basado en revisión del cliente
Refining Main.wo
87
Specifying Default Values for New Enterprise Objects
When new enterprise objects are created in your application, it’s common
to assign default values to some of their properties. For example, in your
Movies application it makes sense to assign a default value for the
title
attribute so a new movie won’t be displayed in the list of movies as a blank
line.
You could write an action method for the Insert/New button instead of
binding it directly to the display group
insert action method. In the custom
action, you would create a new Movie object, assign default values to it, and
then insert the new object into the display group. However, there are two
additional 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 a particular situation, one of the approaches is usually better than the
other. If the default values are intrinsic to the enterprise object, assign them
in the enterprise object class. For example, consider a Member class with a
memberSince property. It’s likely that you would automatically assign the
current date to
memberSince instead of forcing a user to supply a value. You’ll
see how to use this technique in “Adding Behavior to Your Enterprise
Objects” (page 117).
On the other hand, if the default values are specific to an application or to a
particular user interface, explicitly initialize the object in code or specify the
default values using a display group. In the Movies application, the need for
default values is motivated by Main’s user interface: you need to provide a
default value so users can tell when a newly inserted record is selected. In
another situation, you might not want a new movie to have a default title;
you might instead want a new movie’s title to be blank.
An image in this column means that the variable can be initialized
from the component’s archive.
A means that initialization parameters are already set. The variable
is created and initialized from the archive as a part of the component’s
initialization.
A means that no initialization parameters have been set, and so
the variable isn’t automatically created. Double-click the variable to
configure it and add it to the archive.
- GETTING STARTED 1
- WITH WEBOBJECTS 1
- Contents 3
- Table of Contents 5
- Refining Your Model 97 6
- About WebObjects 9
- About This Book 9
- Where to Go From Here 10
- Chapter 1 11
- Set project type here 14
- GuestBook 15
- Examining Your Project 17
- Launching WebObjects Builder 18
- Creating the Page’s Content 20
- Entering Static Text 21
- Using the Inspector 22
- Name: ” and press Enter 24
- Resizing the Form Elements 25
- Choose Static Inspector from 26
- Enter rows and columns here 26
- Binding Elements 27
- String directly in the box 28
- Binding the Input Elements 29
- Implementing an Action Method 30
- Variable definitions 32
- action method 32
- <HR> element) 33
- View Source File 34
- Click here to build 35
- Enhancing Your Application 37
- Duplicating Your Project 39
- PB.project 40
- PB.project.) 40
- Creating a Custom Guest Class 41
- Creating the Guest Object 46
- Main.java 47
- Creating a Guest List 48
- Application, which is 49
- Adding a Second Component 51
- represents the number 52
- WOString 52
- Using a Repetition 53
- Guest as its type 54
- Adding the Finishing Touches 56
- Adding a Dynamic Hyperlink 57
- "Main" 58
- Main”, because you 58
- Creating a WebObjects 59
- Database Application 59
- The Movies Application 62
- Designing the Main Page 65
- Specifying a Model File 66
- Choosing an Adaptor 67
- Specifying Primary Keys 71
- Shift-click to select more 72
- Choosing an Entity 74
- Choosing a Layout 75
- Examining the Variables 80
- Examining the Bindings 81
- Bindings in the Query Part 82
- Bindings in the Editing Part 83
- Refining Main.wo 85
- Specifying a Sort Order 86
- Setting a Date Format 88
- Setting a Number Format 89
- Optional Exercise 90
- Adding the MovieDetails Page 92
- Storing the Selected Movie 93
- Add the hyperlink below 94
- Movie Details 95
- MovieSearch 96
- Refining Your Model 97
- Switches to Table View 101
- Switches to Diagram View 101
- Switches to Browser View 101
- Advanced Relationship button 102
- This should be selected 102
- This box should be checked 102
- WebObjects Builder assigns 106
- Adding a Repetition 108
- Configuring a Repetition 109
- Running Movies 110
- return null; 112
- Adding a Form 113
- Adding a Talent Display Group 113
- Configuring the Browser 114
- Add the image buttons inside 116
- Talent in the Class field 118
Relacionado con productos y manuales para Software Apple WebObjects 3.5
Software Apple Keynote '09 Manual de usuario
(279 paginas)
(279 paginas)
Software Apple GarageBand '08 Manual de usuario
(107 paginas)
(107 paginas)
Software Apple Keynote 2 Manual de usuario
(156 paginas)
(156 paginas)
Software Apple Cinema Tools 3 Manual de usuario
(1 paginas)
(1 paginas)
Software Apple Pages Manual de usuario
(216 paginas)
(216 paginas)
Software Apple Shake 4 Truelight Manual de usuario
(18 paginas)
(18 paginas)
Software Apple iMovie '08 Manual de usuario
(50 paginas)
(50 paginas)
Software Apple Final Cut Pro 5 Manual de usuario
(186 paginas)
(186 paginas)
Software Apple AppleWorks 5 : Mac OS Manual de usuario
(293 paginas)
(293 paginas)
Software Apple iMovie '08 Manual de usuario
(51 paginas)
(51 paginas)
Software Apple GarageBand '09 Manual de usuario
(124 paginas)
(124 paginas)
Software Apple Xsan 1.4 Manual de usuario
(206 paginas)
(206 paginas)
Aqua-pure Cyst-FF manuales
Manuales del propietario y guías del usuario para Equipos De Agua Aqua-pure Cyst-FF.
Ofrecemos 1 manuales en pdf Aqua-pure Cyst-FF para descargar gratis por tipos de documentos: Manual de usuario
Aqua pure Cyst-FF Manual de usuario (16 paginas)
Marca: Aqua-pure | Categoria: Water equipment | Tamaño: 0.66 MB |
Tabla de contenidos
DÉMARRAGE
12
Más productos y manuales para Equipos De Agua Aqua-pure
| Modelos | Tipo de documento |
|---|---|
| CWS150MECJ |
Manual de usuario
Aqua-Pure CWS150MECJ User Manual,
32 paginas
|
| CSX200 |
Manual de usuario
Aqua-Pure CSX200 User Manual,
28 paginas
|
| APIF100 |
Manual de usuario
Aqua-Pure APIF100 User Manual [en] ,
36 paginas
|
| 3MFF100 |
Manual de usuario
Aqua-Pure 3MFF100 User Manual,
8 paginas
|
| APUN101 |
Manual de usuario
Aqua-Pure APUN101 User Manual,
12 paginas
|
| NWS200 |
Manual de usuario
Aqua-Pure NWS200 User Manual,
24 paginas
|
| CSM1501 |
Manual de usuario
Aqua-Pure CSM1501 User Manual,
24 paginas
|
| Complete |
Manual de usuario
Aqua-Pure Complete User Manual,
20 paginas
|
| CBW1001 |
Manual de usuario
Aqua-Pure CBW1001 User Manual [en] ,
20 paginas
|
| APPM150 |
Manual de usuario
Aqua-Pure APPM150 User Manual [en] ,
32 paginas
|
| CBF150 |
Manual de usuario
Aqua-Pure CBF150 User Manual [en] ,
24 paginas
|
© 2020, manymanuals.es. Todos los derechos reservados | 0.035 s |
Manymanuals.com
Manymanuals.de
Manymanuals.fr
Manymanuals.it
Manymanuals.pl
Manymanuals.cz
Manymanuals.es
Manymanuals-pt.com
Comentarios a estos manuales