Chapter 3. A Different Point of View: View Object Techniques

In this chapter, we will cover:

• Iterating a view object using a secondary rowset iterator

• Setting default values for view row attributes

• Controlling the updatability of view object attributes programmatically

• Setting the Queryable property of a view object attribute programmatically

• Using a transient attribute to indicate a new view object row

• Conditionally inserting new rows at the end of a rowset

• Using findAndSetCurrentRowByKey() to set the view object currency

• Restoring the current row after a transaction rollback

• Dynamically changing the WHERE clause of the view object query

• Removing a row from a rowset without deleting it from the database

Introduction

View objects are an essential part of the ADF business components. They work in conjunction with entity objects, making entity-based view objects, to support querying the database, retrieving data from the database, and building rowsets of data. The underlying entities enable an updatable...