From a list, identify the responsibility of the bean provider and the responsibility of the container provider for a message-driven bean.

This page discusses - From a list, identify the responsibility of the bean provider and the responsibility of the container provider for a message-driven bean.

From a list, identify the responsibility of the bean provider and the responsibility of the container provider for a message-driven bean.

From a list, identify the responsibility of the bean provider and the responsibility of the container provider for a message-driven bean.

Bean Provider responsibility

The message-driven bean provider is responsible for providing message-driven bean class. The following are the requirements for the message-driven bean class:

  • The class MUST implement, directly or indirectly, the javax.ejb.MessageDrivenBean interface.

  • The class MUST implement, directly or indirectly, the javax.jms.MessageListener interface.

  • The class MUST be defined as public, MUST NOT be final, and MUST NOT be abstract.

  • The class MUST HAVE a public constructor that takes no arguments. The Container uses this constructor to create instances of the message-driven bean class.

  • The class MUST NOT define the finalize() method.

  • The class MUST implement the ejbCreate() method (it can be empty).

  • The message-driven bean class may have superclasses and/or superinterfaces. If the message-driven bean has superclasses, the ejbCreate method, and the methods of the MessageDrivenBean and MessageListener interfaces may be defined in the message-driven bean class or in any of its superclasses.

  • The message-driven bean class is allowed to implement other methods (for example, helper methods invoked internally by the onMessage method) in addition to the methods required by the EJB specification.

The message-driven bean class MUST define ONE ejbCreate() method whose signature must follow these rules:

  • The method name MUST be ejbCreate.

  • The method MUST be declared as public.

  • The method MUST NOT be declared as final or static.

  • The return type MUST be void.

  • The method MUST HAVE NO arguments.

  • The throws clause MUST NOT define any APPLICATION exceptions.

The message-driven bean class MUST define ONE onMessage method whose signature must follow these rules:

  • The method MUST be declared as public.

  • The method MUST NOT be declared as final or static.

  • The return type MUST be void.

  • The method MUST HAVE a single argument of type javax.jms.Message.

  • The throws clause MUST NOT define any APPLICATION exceptions.

The message-driven bean class MUST define ONE ejbRemove() method whose signature must follow these rules:

  • The method name MUST be ejbRemove.

  • The method MUST be declared as public.

  • The method MUST NOT be declared as final or static.

  • The return type MUST be void.

  • The method MUST HAVE NO arguments.

  • The throws clause MUST NOT define any APPLICATION exceptions.

Container Provider responsibility

The container provider must support the deployment of a message-driven bean as the consumer of a JMS queue or a durable subscription.

The container must ensure that ONLY ONE thread can be executing an instance at any time.

The container must follow the rules with respect to transaction scoping, security checking, and exception handling. 0

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Tutorials

  1. Appendix A. First Appendix
  2. Second Section
  3. Third Section
  4. Part II. Appendixes
  5. From a list, identify the responsibility of the bean provider and the responsibility of the container provider for a message-driven bean.
  6. Chapter 6. Component Contract for Container-Managed Persistence (CMP)
  7. Identify correct and incorrect statements or examples about persistent relationships, remove protocols, and about the abstract schema type of a CMP entity bean.
  8. Identify the interfaces and methods a CMP entity bean must and must not implement.
  9. Match the name with a description of purpose or functionality, for each of the following deployment descriptor elements: ejb-name, abstract-schema-name, ejb-relation, ejb-relat
  10. Identify correctly-implemented deployment descriptor elements for a CMP bean (including container-managed relationships).
  11. From a list, identify the purpose, behavior, and responsibilities of the bean provider for a CMP entity bean, including but not limited to: setEntityContext, unsetEntityContext, ejbC
  12. Chapter 7. CMP Entity Bean Life Cycle
  13. Identify correct and incorrect statements or examples about the rules and semantics for relationship assignment and relationship updating in a CMP bean.
  14. From a list, identify the responsibility of the container for a CMP entity bean, including but not limited to: setEntityContext, unsetEntityContext, ejbCreate, ejbPostCreate, ejbActi
  15. Given a code listing, determine whether it is a legal and appropriate way to programmatically access a caller's security context.
  16. Chapter 10. Message-Driven Bean Component Contract
  17. Identify correct and incorrect statements about the purpose and use of the deployment descriptor elements for environment entries, EJB references, and resource manager connection factory r
  18. Identify the use and the behavior of the ejbPassivate method in a session bean, including the responsibilities of both the container and the bean provider.
  19. Chapter 12. Exceptions
  20. Identify correct and incorrect statements or examples about the client view of an entity bean's local component interface (EJBLocalObject).
  21. Identify EJB 2.0 container requirements.
  22. Chapter 1. EJB Overview
  23. Identify correct and incorrect statements or examples about EJB programming restrictions.
  24. Chapter 9. EJB-QL
  25. Identify correct and incorrect statements or examples about the purpose and use of EJB QL.
  26. Identify correct and incorrect conditional expressions, BETWEEN expressions, IN expressions, LIKE expressions, and comparison expressions.
  27. Identify correct and incorrect statements or examples about the client view of a entity bean's remote component interface (EJBObject).
  28. Given a list, identify which are requirements for an EJB-jar file.
  29. Match EJB roles with the corresponding description of the role's responsibilities, where the description may include deployment descriptor information.
  30. Chapter 2. Client View of a Session Bean
  31. Chapter 13. Enterprise Bean Environment
  32. Chapter 8. Entity Beans
  33. Identify the use, syntax, and behavior of, the following entity bean home method types, for Container-Managed Persistence (CMP); finder methods, create methods, remove methods, and home me
  34. Identify correct and incorrect statements or examples about an entity bean's primary key and object identity.
  35. Identify correct and incorrect statements or examples about the client's view of exceptions received from an enterprise bean invocation.
  36. Identify correct and incorrect statements or examples about application exceptions and system exceptions in entity beans, session beans, and message-driven beans.
  37. Given a particular method condition, identify the following: whether an exception will be thrown, the type of exception thrown, the container's action, and the client's view.
  38. Given a list of responsibilities related to exceptions, identify those which are the bean provider's, and those which are the responsibility of the container provider. Be prepared to recog
  39. SCBCD Study Guide
  40. Identify the use and behavior of the MessageDrivenContext interface methods.