Encapsulation | Object-oriented Methods in Forms

Encapsulation is the capability to combine and hide an object's implementation from its definition ”in other words, to hide data from methods .

To put encapsulation to work, you use procedures, functions, and packages. (These can be stored in the database, form or a form library, an object group in a form, an object library, or a base template form.)

GUI Development

GUI Development
Standard Toolbar Implementation
Timers and Displaying a Clock
Special Tips for List Items
Ordering by Foreign Key Items in Forms
Querying by Nonbase Table Items
Tips for Standard GUI Practices and Forms Development
Summary

Advanced GUI Development: Developing Beyond GUI

Advanced GUI Development: Developing Beyond GUI
Playing with Relations
Obtaining Query Count Without EXECUTE-ing a Query
Using Form and Global Variables
Base Tables
The Power of Record Groups
Creating a Customized Sign-on Form
Avoiding Confusion Between DO_KEY and the Corresponding KEY- Trigger
Window Management in Forms
Summary

Multi-form Applications

Multi-form Applications
Myths About the Form Filename, Form Module Name , and Form ID
Passing Data from the Called Form to the Calling Form
Form Management in an OPEN_FORM Configuration
Tracking QUERY_ONLY Mode
Special Tips for Working with Multi-form Applications
Summary

Advanced Forms Programming

Advanced Forms Programming
The Work-around for PL/SQL 2.x Limitations in Forms 4.5
Populating a PL/SQL Table from a Block
Taking Advantage of PL/SQL 2.x in Forms
File Output from a Block
An Exclusive Server-Side Commit from Forms
Intersession and Interdatabase Communication from Forms
Sharing a Record Group Across Forms
Summary

Error-Message Handling

Error-Message Handling
The Basics of Error-Message Handling
Handling Errors
Deficiencies in Forms Error-Message Handling
Summary

Object-oriented Methods in Forms

Object-oriented Methods in Forms
Inheritance
Encapsulation
Object and Code Reusability
Polymorphism
Summary

Intelligence in Forms

Intelligence in Forms
Smart Classes and Smart Triggers - How Smart Are They?
Does Subclassing Exhibit Intelligence?
Normal Trigger Intelligence
Intelligence with Regard to Form Object Properties
Intelligence with Regard to Form Wizards
Summary

Additional Interesting Techniques

Additional Interesting Techniques
Programmatically Canceling a Query
Programmatic Equivalent of Cancel Query
Validation, Navigation, and Simulating Navigation
Enhancing the Function of Exit Form
Preventing Validation of WHEN-VALIDATE-ITEM for Control Items During Query Time
When to Use WHEN-VALIDATE-RECORD and When to Use WHEN-VALIDATE-ITEM
When to Use the Same Trigger and How to Make It Fire at Multiple Levels
A Block Level Commit
Summary

Working with Trees

Working with Trees
Creating a Tree Item
Operations on a Tree Item
Planting and Growing Trees -Dynamically Adding Nodes Along with Data to an Existing Base Tree
Shrinking Trees
Summary

Oracle 8 and 8i Features in Forms Developer

Oracle 8 and 8i Features in Forms Developer
Techniques for Querying and Updating New Data Sources in Forms Based on Objects
A New Look at Relations Using REFS
Basing a Block on a Stored Procedure Involving Object Tables
Record Groups and LOVs Based on Objects
Summary