Interview Question: What is the difference between find and select methods in EJB?

By: Ash Printer Friendly Format    

Question:What is the difference between find and select methods in EJB?

Answer:

A select method can return a persistent field (or a collection thereof) of a related entity bean. A finder method can return only a local or remote interface (or a collection of interfaces).

Because it is not exposed in any of the local or remote interfaces, a select method cannot be invoked by a client. It can be invoked only by the methods implemented within the entity bean class. A select method is usually invoked by either a business or a home method.

A select method is defined in the entity bean class. For bean-managed persistence, a finder method is defined in the entity bean class, but for container-managed persistence it is not.

 

 

 

 



Most Viewed Articles (in Interview )

Interview Question: What about JSTL and JavaServer Faces ?

Interview Question: Is there a particularly good IDE to use with Struts ?

Interview Question: Do ActionForms have to be true JavaBeans?

Interview Question: What is Remote client view?

Interview Question: What are the optional clauses in EJB QL?

Interview Question: What is the difference between EAR, JAR and WAR file?

Interview Question: What is re-entrant. Is session beans reentrant. Is entity beans reentrant?

Interview Question: How many EJB Objects are created for a Bean?

Interview Question: What is deployment descriptor?

Interview Question: What are the call back methods in Entity bean?

Interview Question: What is Message Driven Bean?

Interview Question: What is local interface. How values will be passed?

Interview Question: What is abstract schema?

Getting started with Interview

Types of Interviews

Latest Articles (in Interview)

Comment on this tutorial