26 Advanced Entity Object Techniques

This chapter describes advanced techniques for use in the entity objects in your business domain layer.

This chapter includes the following sections:

• Section 26.1, "Creating Custom, Validated Data Types Using Domains"

• Section 26.2, "Updating a Deleted Flag Instead of Deleting Rows"

• Section 26.3, "Advanced Entity Association Techniques"

• Section 26.4, "Basing an Entity Object on a PL/SQL Package API"

• Section 26.5, "Basing an Entity Object on a Join View or Remote DBLink"

• Section 26.6, "Using Inheritance in Your Business Domain Layer"

• Section 26.7, "Controlling Entity Posting Order to Avoid Constraint Violations"

• Section 26.8, "Implementing Automatic Attribute Recalculation"

• Section 26.9, "Implementing Custom Validation Rules"

Note: To experiment with a working version of the examples in this chapter, download the AdvancedEntityExamples workspace from the Example Downloads page at http://otn.oracle.com/documentation/jdev/b25947_01/.