Sun Java System Application Server Platform Edition 9 Upgrade and Migration Guide

DTD Changes during EJB Migration

Migrating EJBs from Application Server 6.x to Application Server 9 is done without making any changes to the EJB code. However, the following DTD changes are required.

Session Beans

The <!DOCTYPE> definition must be modified to point to the latest DTDs with J2EE standard DDs, such as ejb-jar.xml.
Replace ias-ejb-jar.xml file with the modified version of this file, named sun-ejb-jar.xml,created manually according to the DDs. For more details, see thehttp://ttp://wwws.sun.com/software/dtd/appserver/sun-ejb-jar_2_1-1.dtd
In the sun-ejb-jar.xml file, the JNDI name for all the EJBs must be added before ”ejb/’ in all the JNDI names. This is required because, in Application Server 6.5, the JNDI name of the EJB can only be ejb/<ejb-name> where <ejb-name> is the name of the EJB as declared inside the ejb-jar.xml file.

In the Application Server, a new tag has been introduced in the sun-ejb-jar.xml. This is where the JNDI name of the EJB is declared.

Note –

To avoid changing JNDI names throughout the application, declare the JNDI name of the EJB as ejb/<ejb-name> inside the <jndi-name> tag.

Entity Beans

The <!DOCTYPE> definition must be modified to point to the latest DTDs containing J2EE standard DDs, such as ejb-jar.xml.
Update the <cmp-version> tag with the value 1.1, for all CMPs in the ejb-jar.xml file.
Replace all the <ejb-name>-ias-cmp.xml files with the manually created sun-cmp-mappings.xml file. For more information, see http://wwws.sun.com/software/dtd/appserver/sun-cmp-mapping_1_2.dtd
Generate dbschema by using the capture-schema utility in the Application Server installation’s bin directory and place it above META-INF folder for Entity beans.
Replace the ias-ejb-jar.xml with the sun-ejb.jar.xml in Application Server.
In Application Server 6.5, the finder's SQL was directly embedded into the <ejb-name>-ias-cmp.xml. In Application Server, mathematical expressions are used to declare the <query-filter> for the various finder methods.

Message Driven Beans

Application Server provides seamless Message Driven Support through the tight integration of Sun Java System Message Queue with the Application Server, providing a native, built-in JMS Service.

This installation provides Application Server with a JMS messaging system that supports any number of Application Server instances. Each server instance, by default, has an associated built-in JMS Service that supports all JMS clients running in the instance.

Both container-managed and bean-managed transactions, as defined in the Enterprise JavaBeans Specification 2.0 and 3.0 are supported.

Message Driven Bean support in iPlanet Application Server was restricted to developers, and used many of the older proprietary APIs. Messaging services were provided by iPlanet Message Queue for Java 2.0. An LDAP directory was also required under iPlanet Application Server to configure the Queue Connection Factory object.

The QueueConnectionFactory, and other elements required to configure Message Driven Beans in Application Server are now specified in the ejb-jar.xml file.

For more information on the changes to deployment descriptors, see Migrating Deployment Descriptors For information on Message Driven Beans see Using Message-Driven Beans in Sun Java System Application Server Platform Edition 9 Developer’s Guide.