Additional Upgrade Procedures and Information

EJB 2.0

The EJB 2.0 specification has changed substantially between WebLogic Server 6.0 and WebLogic Server 7.0, and somewhat between WebLogic Server 6.1 and WebLogic Server 7.0.

Some of the prominent changes are listed here. To see a complete listing of the specification changes from WebLogic Server 6.0 to WebLogic Server 7.0, you can view and download the EJB 2.0 final specification at http://java.sun.com/products/ejb/2.0.html.

For more information about the changes between WebLogic Server 6.0 and WebLogic Server 6.1, see EJB Enhancements in WebLogic Server in Introducing WebLogic Server Enterprise JavaBeans in the WebLogic Server 6.1 documentation. EJB 1.1 beans that worked in WebLogic Server 6.x should work just as well in WebLogic Server 7.0 with no alteration.

You may have to make the following changes to EJB 2.0 beans:

„If your deployment descriptor contains a 6.0 element that has a different name in 7.0, you have to manually change the name in your deployment descriptor. The following are some examples of element names that you may need to change in 7.0:

z In 7.0, the name of the element that is used to identify a particular EJB that participates in a relationship is relationship-role-source. In 6.0, the element name was role-source.

zIn 7.0, the name of the element that specifies whether the destination is a queue or a topic is destination-type. In 6.0, the element name was

jms-destination-type.

zIn 7.0, the name of the element that specifies whether the destination is a queue or a topic is run-as. In 6.0, the element name was

run-as-specified-identity.

„In 7.0, EJB-QLqueries require a SELECT clause.

„All EJB 2.0 CMP beans must have an abstract-schema-nameelement specified in their ejb-jar.xmlin WebLogic Server 7.0.

Other major changes that resulted from the EJB 2.0 specification changes are as follows:

BEA WebLogic Server 7.0 Upgrade Guide

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BEA 7 manual Ejb

7 specifications

BEA 7, a significant product from BEA Systems, represents a cornerstone in enterprise application integration and service-oriented architecture. As a comprehensive solution for developing, deploying, and maintaining enterprise-level applications, it brings a host of features that cater to the needs of businesses seeking agility and reliability in their IT infrastructure.

One of the standout characteristics of BEA 7 is its robust support for service-oriented architecture (SOA). This enables businesses to create applications as loosely coupled services, facilitating easier integration and scalability. The platform's emphasis on middleware technologies allows organizations to streamline their IT operations, enhance interoperability, and reduce time to market for new applications.

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In summary, BEA 7 stands out as a powerful enterprise solution, distinguished by its support for SOA, robust application server capabilities, web services integration, strong security features, and a developer-friendly environment. These attributes make BEA 7 an essential tool for organizations aiming to enhance their operational efficiency and adapt to the increasingly dynamic business landscape.