Java Reference
In-Depth Information
Creating an entity bean
Next, we create an EJB 3.0 entity bean from the Oracle database table
CATALOG
that
we created earlier. Here's how to go about it:
1.
Select the
EJB3Model
project in the
Application
navigator and select
File
|
New
.
2.
In the
New
Gallery
window, select
Categories
|
Business
Tier
|
EJB
and
Items
|
Entities
from
Tables
and click on
OK
.
3.
In the
Persistence
Unit
window, select
New
to create a new persistence unit.
In the
New
Persistence
Unit
window, specify a persistence unit name (
em
).
4.
Specify
JTA
DataSource
Name
as
jdbc/OracleDBConnectionDS
, which is
the data source name corresponding to the
OracleDBConnection
connection.
5.
Select the settings for
Toplink
;
Database
Platform
as
Oracle
and
Server
Platform
as
WebLogic
10
. Click on
OK
.
6.
The
em
Persistence
Unit
gets created. Click on
OK
in the
Persistence
Unit
window.
7.
Select
Type
of
Connection
as
Online
Database
Connection
and click on
Next
.
8.
In the
Database
Connection
Details
window, select the
OracleDBConnection
and click on
Next
.
9.
In the
Select
Tables
window, select
Schema
as
OE
,
Name
Filter
as
%
, and
check the
Auto-Query
checkbox.
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