Skip to Main Content
J2EE™ Tutorial, The
book

J2EE™ Tutorial, The

by Stephanie Bodoff, Dale Green, Kim Haase, Eric Jendrock, Monica Pawlan, Beth Stearns
March 2002
Beginner to intermediate content levelBeginner to intermediate
528 pages
10h 12m
English
Addison-Wesley Professional
Content preview from J2EE™ Tutorial, The

Example Queries

The following queries are from the PlayerEJB entity bean of the RosterApp J2EE application, which is documented in the Chapter 6. To see the relationships between the beans of the RosterApp, see Figure 6-1 (page 121).

Simple Finder Queries

If you are unfamiliar with EJB QL, these simple queries are a good place to start.

Example 1
SELECT OBJECT(p) 
FROM Player p

Data retrieved: All players.

Finder method: findall()

Description: The FROM clause declares an identification variable named p, omitting the optional keyword AS. If the AS keyword were included, the clause would be written as follows:

FROM Player AS p 

The Player element is the abstract schema name of the PlayerEJB entity bean. Because the bean defines the findall ...

Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Start your free trial

You might also like

The J2EE™ Tutorial Second Edition

The J2EE™ Tutorial Second Edition

Stephanie Bodoff, Eric Armstrong, Jennifer Ball, Debbie Bode Carson, Ian Evans, Dale Green, Kim Haase, Eric Jendrock
Sams Teach Yourself J2EE™ in 21 Days

Sams Teach Yourself J2EE™ in 21 Days

Martin Bond, Dan Haywood, Debbie Law, Andy Longshaw, Peter Roxburgh
Sams Teach Yourself J2EE™ in 21 Days, Second Edition

Sams Teach Yourself J2EE™ in 21 Days, Second Edition

Martin Bond, Dan Haywood, Debbie Law, Andy Longshaw, Peter Roxburgh

Publisher Resources

ISBN: 0201791684Purchase book