Apple WebObjects 3.5 Bedienungsanleitung Seite 168
- Seite / 218
- Inhaltsverzeichnis
- LESEZEICHEN
Bewertet. / 5. Basierend auf Kundenbewertungen
Chapter 10 The WebScript Language
168
The scope of an instance variable is object-wide. That means that any method
in the object can access any instance variable. You can’t directly access an
instance variable outside of the object that owns it; you must use an accessor
method instead. See “Accessor Methods” (page 171).
The lifetime of an instance variable is the same as the lifetime of the object.
When the object is created, all of its instance variables are created as well and
their values persist throughout the life of the object. Instance variables are not
freed until the object is freed.
As you learned in the chapter “Common Methods” (page 41), a WOApplication
is created when you started a WebObjects application, a WOSession is created
each time a different user accesses that application, and a WOComponent is
created the first time a user accesses that page in the application. Thus, the
variables you declare at the top of the application script (
Application.wos) exist as
long as the application is running. The variables you declare at the top of the
session script (
Session.wos) exist for the length of one session. As new users access
your application, new sessions are created, so new copies of the session’s
instance variables are created too. These copies of instance variables are private
to each session; one session does not know about the instance variables of
another session. As sessions expire, their instance variables are freed. Finally,
the variables you declare at the top of a component script are created and
released as that component is created and released.
Note: Just how often a particular component object is created depends on whether
the application object is caching pages. For more information, see “WebObjects
Viewed Through Its Classes” (page 63).
Assigning Values to Variables
You assign values to variables using the following syntax:
myVar = aValue;
A value can be assigned to a variable at the time it is declared or after it is
declared. For example:
NSNumber *myVar1;
id myVar2 = 77;
myVar1 = 76;
The value you assign to a variable can be either a constant or another variable.
For example:
- WEBOBJECTS 1
- DEVELOPER’S GUIDE 1
- Contents 3
- Table of Contents 5
- Part II Special Tasks 6
- Managing State 109 6
- Part III WebScript 7
- The WebScript Language 163 7
- Foundation Classes 187 7
- Index 211 7
- Introduction 9
- About This Book 11
- Other Useful Documentation 12
- WEBOBJECTS ESSENTIALS 15
- Chapter 1 17
- <DocumentRoot> 19
- Components 20
- Template 21
- Code or Script File 21
- Bindings 22
- Application Code 23
- Session Code 23
- A Note on WebObjects Classes 23
- Application Directory 24
- WebObjects Adaptors 26
- WODefaultApp 27
- Dynamic Elements 29
- Server-Side Dynamic Elements 31
- Chapter 2 Dynamic Elements 32
- .wod file: 33
- Declarations File Syntax 36
- Client-Side Java Components 37
- Common Methods 41
- Action Methods 43
- Chapter 3 Common Methods 44
- Application Initialization 47
- Session Initialization 48
- Component Initialization 49
- Request-Handling Methods 50
- Invoking an Action 52
- Generating a Response 53
- Chapter 4 55
- Debugging WebScript 57
- Debugging Java 57
- Debugging Techniques 58
- Using Trace Methods 59
- Programming Pitfalls to Avoid 60
- Java Programming Pitfalls 61
- Chapter 5 63
- Server and Application Level 65
- Session Level 66
- Request Level 68
- Page Level 69
- Database Integration Level 71
- Accessing the Session 74
- Assigning Input Values 78
- Generating the Response 80
- How HTML Pages Are Generated 82
- START:Calendar { 85
- SPECIAL TASKS 89
- Creating Reusable Components 91
- Simplifying Interfaces 96
- Intercomponent Communication 98
- Parent's Template File 99
- <DocRoot> 105
- Designing for Reusability 106
- Complete Declaration 107
- Partial Declaration 108
- Managing State 109
- Chapter 7 Managing State 112
- Objects and State 113
- State Storage Strategies 120
- Comparison of Storage Options 121
- State in the Server 123
- State in the Page 124
- State in Cookies 126
- Custom State-Storage Options 128
- Controlling Session State 133
- Setting Session Time-Out 134
- Controlling Component State 135
- Adjusting the Page Cache Size 136
- Using awake and sleep 137
- Client-Side Page Caching 139
- Chapter 8 141
- Choosing a Strategy 143
- Objective-C Java 146
- Chapter 9 149
- Maintaining a Log File 151
- Accessing Statistics 152
- Recording Extra Information 153
- Error Handling 154
- Performance Tips 156
- Compile the Application 157
- Control Memory Leaks 157
- Limit State Storage 158
- Limit Database Fetches 158
- Limit Page Sizes 158
- Installing Applications 159
- WEBSCRIPT 161
- The WebScript Language 163
- Objects in WebScript 165
- WebScript Language Elements 166
- Variables and Scope 167
- Assigning Values to Variables 168
- Invoking Methods 171
- Accessor Methods 171
- Sending a Message to a Class 172
- Creating Instances of Classes 173
- Data Types 174
- Statements and Operators 175
- Control-Flow Statements 176
- Arithmetic Operators 176
- Logical Operators 176
- Relational Operators 176
- Reserved Words 178
- “Modern” WebScript Syntax 179
- Advanced WebScript 181
- Categories 182
- Objective-C WebScript 183
- Chapter 11 187
- Foundation Objects 189
- Determining Equality 190
- Working With Strings 191
- Commonly Used String Methods 192
- Comparing Strings 194
- Converting String Contents 194
- Modifying Strings 195
- Storing Strings 195
- Working With Arrays 196
- Commonly Used Array Methods 196
- Creating Arrays 197
- Querying Arrays 197
- Sorting Arrays 198
- Adding and Removing Objects 198
- Working With Dictionaries 200
- Creating Dictionaries 202
- Querying Dictionaries 203
- Storing Dictionaries 205
- Working With Dates and Times 206
- Commonly Used Date Methods 207
- Representing Dates as Strings 208
- Retrieving Date Elements 208
- – minuteOfHour 209
- – secondOfMinute 209
Verwandte Produkte und Handbücher für Software Apple WebObjects 3.5
Software Apple Aperture Bedienungsanleitung
(531 Seiten)
(531 Seiten)
Software Apple iDVD '08 Bedienungsanleitung
(36 Seiten)
(36 Seiten)
Software Apple iWork '09 Bedienungsanleitung
(376 Seiten)
(376 Seiten)
Software Apple Soundtrack Pro Bedienungsanleitung
(311 Seiten)
(311 Seiten)
Software Apple iPhoto '08 Bedienungsanleitung
(23 Seiten)
(23 Seiten)
Software Apple iWork '09 Bedienungsanleitung
(394 Seiten)
(394 Seiten)
Software Apple Logic Express 8 Bedienungsanleitung
(109 Seiten)
(109 Seiten)
Software Apple Keynote 1 Bedienungsanleitung
(110 Seiten)
(110 Seiten)
Diodes DESD5V0S1BA manuals
Owner’s manuals and user’s guides for Hardware Diodes DESD5V0S1BA.
We providing 1 pdf manuals Diodes DESD5V0S1BA for download free by document types: User Manual
Table of contents
More products and manuals for Hardware Diodes
| Models | Document Type |
|---|---|
| DESD5V0S1BL |
User Manual
Diodes DESD5V0S1BL User Manual [en] ,
4 pages
|
| DESD5V0S1BB |
User Manual
Diodes DESD5V0S1BB User Manual,
4 pages
|
| DESD5V0S1BLD |
User Manual
Diodes DESD5V0S1BLD User Manual,
4 pages
|
| DESD5V0S1BLP3 |
User Manual
Diodes DESD5V0S1BLP3 User Manual [en] ,
4 pages
|
| DLPT05W |
User Manual
Diodes DLPT05W User Manual [en] ,
5 pages
|
| DESDALC5LP |
User Manual
Diodes DESDALC5LP User Manual,
6 pages
|
| DRTR5V0U1LP |
User Manual
Diodes DRTR5V0U1LP User Manual,
5 pages
|
| DRTR5V0U1SO |
User Manual
Diodes DRTR5V0U1SO User Manual [en] ,
4 pages
|
| DRTR5V0U2SR |
User Manual
Diodes DRTR5V0U2SR User Manual,
4 pages
|
| DRTR5V0U4S |
User Manual
Diodes DRTR5V0U4S User Manual [en] ,
4 pages
|
| DRTR5V0U4SL |
User Manual
Diodes DRTR5V0U4SL User Manual,
5 pages
|
| DRTR5V0U4TS |
User Manual
Diodes DRTR5V0U4TS User Manual,
5 pages
|
| DT1042-04SO |
User Manual
Diodes DT1042-04SO User Manual,
5 pages
|
| DT1140-04LP |
User Manual
Diodes DT1140-04LP User Manual [en] ,
5 pages
|
| DT1452-02SO |
User Manual
Diodes DT1452-02SO User Manual [en] ,
5 pages
|
| DT1240-04LP |
User Manual
Diodes DT1240-04LP User Manual [en] ,
5 pages
|
| DT2042-04SO |
User Manual
Diodes DT2042-04SO User Manual [en] ,
5 pages
|
| DT2636-04S |
User Manual
Diodes DT2636-04S User Manual,
5 pages
|
| DRDNB21D |
User Manual
Diodes DRDNB21D User Manual,
7 pages
|
| DRD (xxxx) W |
User Manual
Diodes DRD (xxxx) W User Manual [en] ,
9 pages
|
© 2020, manymanuals.de. Alle Rechte vorbehalten. | 0.030 s |
Manymanuals.com
Manymanuals.de
Manymanuals.fr
Manymanuals.it
Manymanuals.pl
Manymanuals.cz
Manymanuals.es
Manymanuals-pt.com
Kommentare zu diesen Handbüchern