Web Service model vs JavaBean Model

Question

Hi there,
My business logic is made with EJBs ... and now i'd like to know the pros and cons between working with the javabean model or make available my Ejbs as Web service and use the webservice model ?
Regards,
Frantz

Answer 1

Hi Frantz,
Using EJB:
The business functions are provided in the form of an Enterprise JavaBean (EJB) application where the business logic is implemented through a stateless session bean and the persistence through a CMP-based entity bean.
In order to use the existing functions in the Web Dynpro application, we will import a model that facilitates their usage. The JavaBean importer is used to import the model. Strictly speaking, it would be possible to import a session bean using the JavaBean importer. The result would be a model class without any properties. Since you can only bind properties, not methods, to UI elements, this would not make sense. Thus, we will have to implement a command bean in the form of an intermediate layer, which serves as the input for the JavaBean import and provides the necessary properties.
https://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/com.sap.km.cm.docs/library/webdynpro/creating an email-client using web dynpro and web services.pdf
Also refer to this document https://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/com.sap.km.cm.docs/library/webdynpro/using ejbs in web dynpro applications.pdf
Thanks,
Raj.