Web Services

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Web Services

• Standards, APIs, and Applications

By Candice Sonchar
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Agenda

• What are Web Services
• Web Services Standards
• Using JMS
• Using Mule
• JMS vs. Mule

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What are Web Services?

• Enterprise applications
• Provide applications to run across platforms and
  frameworks
• Great interoperability and extensibility
• Deliver sophisticated added-value services

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Standards

• Message orientation
• Protocol composability
• Autonomous services
• Managed Transparency
• Protocol based integration

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JAVA Message Service (JMS)

• Create, send, receive, and read messages
• Common set of interfaces and semantics that allow
  Java programs to communicate with other messaging
  implementations.
• Asynchronous
• Reliable

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JMS Components

• JMS Provider
• JMS Clients
• Messages
• Point-to-point
• Publish-Subscribe
• Administered objected
• Native clients

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JMS API Programming Model
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Messaging Domains
Point-to-Point
Pub-Sub
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Mule

• Distributable object broker
• Handles interactions with applications using
  disparate technologies, transports, and
  protocols.
• Manages interaction between components
  transparently
• Based on Enterprise Service Bus(ESB)

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Mule Overview
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Mule Architecture
 

• Carry data between applications within or outside
  Intranet
• Manage Universal Message Objects (POJOs)
• Communication through message endpoints.

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JMS vs Mule

• JMS only works with Java
• Mule works with JMS, SMTP, JDBC,TCP, HTTP, XMPP,
  and many more
• Mule provides for much more flexibility
• JMS requires more additional work for the
  developer.

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Hello World

• JMS Hello World
• Mule Hello World

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Future Research

• Future of JMS with Java as Open Source
• More cross platform Web Services

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Resources

• Java Message Service Tutorial. http//java.sun.com
  /products/jms/tutorial
• Web Services Activity . http//www.w3.org/2002/ws/
  
• http//en.wikipedia.org/wiki/Web_service
• Java Technology and Web Services .
  http//java.sun.com/webservices/
• http//mule.mulesource.org/wiki/display/MULE/Home
• http//www.enterpriseintegrationpatterns.com/Reque
  stReplyJmsExample.html