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Primary Key class

Home Object

Remote Object

abstract double area() { }

abstract double area()

abstract double area();

abstract double area(); { }

transactional components.

client side security and encryption.

distributed object components.

server-side components.

a web server

an EJB container

an application server

a database server

An EJB handle is used to handle exceptions when accessing EJB objects.

An EJB handle is used to store a reference to a specific EJB object.

An EJB handle is part of the Home interface.

An EJB handle is used for local references inside the EJB container.

JNDI binding for local home interface

Local home interface

Home interface

ejb-ref-type

ejbCreate()

ejbPassivate()

ejbStore()

ejbSave()

transactional information

security information

data source information

timer service information

PersonHome ph = ctx.lookup("java:comp/env/ejb/Person");

PersonLocalHome ph=(PersonLocalHome)ctx.lookup("java:comp/env/ejb/PersonLocalHome");

PersonHome ph = ctx.lookup("java:comp/env/ejb/PersonHome");

PersonHome ph = javax.rmi.PortableRemoteObject.narrow(ctx, PersonHome.class)

PersonHome ph = (PersonHome)javax.rmi.PortableRemoteObject.narrow(ctx,PersonHome.class)

Using ejbSelect() methods in session beans for specifying the selection criteria for a list

Using ejbSelect() methods within ejbHome methods to return entities

Using ejbSelect() methods to access fields of a bean instance

Using ejbSelect() methods to perform operations not specific to a entity instance

static fields in the entity bean

an abstract persistence schema

EJB Query Language definitions in the deployment descriptor

the persistence-type attribute in the deployment descriptor

declare the CMR member fields and add ejb-relationship definitions in the deployment descriptor

implement the get/set methods for the CMR fields and add ejb-relationship definitions in the deployment descriptor

implement the ejbLoad() and ejbStore() methods and add ejb-relationship definitions in the deployment descriptor

declare abstract get/set methods for the CMR field and add ejb-relationship definitions in the deployment descriptor