JMS

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JMS

• Aino Andriessen

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Messaging

• a-synchrone communicatie
• Publish-Subscribe Messaging
• Point-To-Point Messaging

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Point to Point

• Queue

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Publish - Subscribe

• Topic
• (non) durable

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JMS

• javax.jms
• verzameling interfaces
• Connection
• Session
• MessageListener
• MessageConsumer en Producer
• Queue
• Topic
• Implementatie is dus nodig
• IBM MQ,Tibco,Sonic, ActiveMQ, Oracle AQ, ...
• Vaak als EJB
• Message Driven Bean (MDB)

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Architectuur
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JMS - Primary features

• The primary features of JMS are as follows
• Connection Factories are used in JMS to create
  connections to a specific JMS provider.
• In JMS, both Publish-Subscribe Messaging and
  Point-To-Point are implemented and defined by
  separate interfaces so that a Provider does not
  have to support both.
• JMS defines the concept of a Topic or a Queue as
  the target for a Message. Topics are used for
  Publish-Subscribe Messaging. Queues are used for
  Point-to-Point Messaging.
• The Providers code is defined by interfaces in
  JMS, freeing the implementation from the
  limitations of subclassing.
• JMS provides support for distributed transactions.

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Demo
Laptop
consumer
Suse VM
Message Listener
ActiveMQ (14-318-96261616)
producer
TEST.FOO
jms api
jms api
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'poor man messaging'

• java.util.Queue

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More info

• http//java.sun.com/products/jms/tutorial/
• http//my.execpc.com/gopalan/jms/jms.html
• http//www.javaskyline.com/learnjms.html