Programming Interfaces in a Message-Driven Bean
by Peter Roxburgh, Andy Longshaw, Debbie Law, Dan Haywood, Martin Bond
Sams Teach Yourself J2EE™ in 21 Days, Second Edition
- Copyright
- About the Authors
- Acknowledgments
- Tell Us What You Think!
- Introduction
- Introducing J2EE and Enterprise JavaBeans
- The Challenge of N-tier Development
- The J2EE Platform and Roles
- Naming and Directory Services
- Introduction to Enterprise JavaBeans
- Session EJBs
- Overview
- The javax.ejb Package for Session beans
- Specifying a Stateless Session bean
- Implementing a Stateless Session Bean
- Configuring a Stateless Session bean
- Configuring a Session Bean Using J2EE RI deploytool
- Client Applications
- Configuring J2EE RI Client Applications with deploytool
- Running the Agency Case Study Example
- Stateful Session Beans
- Timer Service
- Gotchas
- Summary
- Q&A
- Exercises
- Entity EJBs
- Container-Managed Persistence and EJB Query Language
- Developing J2EE Applications
- Transactions and Persistence
- Java Message Service
- Message-Driven Beans
- JavaMail
- Servlets
- The Purpose and Use of Servlets
- Introduction to HTTP
- Introduction to HTML
- The Servlet Environment
- The Servlet Class Hierarchy
- Simple Servlet Example
- Passing Parameter Data to a Servlet
- Web Applications
- Handling Errors
- Retaining Client and State Information
- Servlet Filtering
- Event Listening
- Servlet Threads
- Security and the Servlet Sandbox
- Agency Case Study
- Summary
- Q&A
- Exercises
- JavaServer Pages
- JSP Tag Libraries
- Integrating J2EE into the Enterprise
- Security
- Integrating XML with J2EE
- Transforming XML Documents
- Patterns
- Integrating with External Resources
- Using RPC-Style Web Services with J2EE
- Web Service Overview
- Web Services for J2EE
- Creating a Web Service with JAX-RPC
- The JAX-RPC API
- Creating a Simple Service
- Packaging and Deploying the Simple Web Service Using J2EE RI deploytool
- Consuming the Simple Greeting Service
- Building More Robust Web Services
- Exposing EJBs Through Web Service Protocols
- Packaging and Deploying the Agency Web Service Using J2EE RI deploytool
- Consuming the Simple Greeting Service
- Other Considerations for Web Services
- Summary
- Q&A
- Exercises
- Message-Style Web Services and Web Service Registries
- Message-based SOAP Services
- Implementing an SAAJ-based Web Service
- Packaging and Deploying the Simple Web Service Using J2EE RI deploytool
- Consuming the SAAJ Web Service
- More Complex Message Exchange
- Registries for Web Services
- Accessing Information in a UDDI Registry
- Using JAXR for Registry Access
- Contacting a Registry Using JAXR
- Storing Information in a Registry Using JAXR
- Retrieving Information from a Registry Using JAXR
- Summary
- Q&A
- Exercises
- Appendixes
- Index
Programming Interfaces in a Message-Driven Bean
There are a number of constraints on the contents of a Message-Driven Bean class which must
Implement the javax.ejb.MessageDrivenBean interface
Implement the javax.jms.MessageListener interface
Have a single constructor, with no arguments
Have a single public setMessageDrivenContext(MessageDrivenContext ctx) method that returns void
Have a single public ejbCreate() method with no arguments that returns void
Have a single public ejbRemove() method with no arguments that returns void
Have a single public onMessage(Message message) method that returns void
Not have a finalize() method
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