6
Objects and Collections

This chapter discusses how Oracle SQLJ supports user-defined SQL types, namely objects (and related object references) and collections (variable arrays and nested tables). This includes discussion of the Oracle JPublisher utility, which you can use to generate Java classes corresponding to user-defined SQL types.

The following topics are discussed:

• Introduction

• About Oracle Objects and Collections

• About Custom Java Classes and the CustomDatum Interface

• User-Defined Types in the Database

• JPublisher and the Creation of Custom Java Classes

• Strongly Typed Objects and References in SQLJ Executable Statements

• Strongly Typed Collections in SQLJ Executable Statements

• Serializing Java Objects through Custom Java Classes

• Weakly Typed Objects, References, and Collections

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