Doubt on entity bean question

[Prathibha Bharathi]

Problem

Which of the following methods must be implemented by an entity bean class with Container managed persistence?

Options

Select 1 correct option.

a.At least one ejbCreate(...)


b.ejbFindByPrimaryKey(...)


c.At least one ejbSelect(...)


d.At least one ejbFindByXXX(...) (other than ejbFindByPrimaryey(...))


f.None of these.

Answers is f.

But I think the answer is B.
Please help me!
Regards,
Prathibha

[Surya Baabu]

Hi

The answer if (f) because for CMP beans you don't implement the ejbFinder methods in your bean class, the container does that for you.

Surya Baabu

[Surasak Leenapongpanit]

Because of the primary key is defined in a standard XML deployment descriptor file ,the container knows how to provide the ejbFindByPrimaryKey() finder method and generates the appropriate JDBC SELECT statement to support it. Therefore, You don't implement this method.

[Prathibha Bharathi]

Thank U Surya and Leenapongpanit! My doubt is now clarified.

Regards,
Prathibha