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16.2. Basic Configuration

Procedure
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To configure a provider endpoint do the following:
  1. Decide what type of provider endpoint to use.
    See the section called “Types of providers”.
  2. Specify the name of the service for which this endpoint is acting as a proxy.
    This is specified using the service attribute.
    Tip
    If you are using a SOAP provider and your WSDL file only has one service defined, you do not need to specify the service name.
  3. Specify the name of the endpoint for which this endpoint is acting as a proxy.
    This is specified using the endpoint attribute.
    Tip
    If you are using a SOAP provider and your WSDL file only has one endpoint defined, you do not need to specify the endpoint name.
  4. Specify the connection factory the endpoint will use.
    The endpoint's connection factory is configured using the endpoint's connectionFactory attribute. The connectionFactory attribute's value is a reference to the bean that configures the connection factory. For example, if the connection factory configuration bean is named widgetConnectionFactory, the value of the connectionFactory attribute would be #widgetConnectionFactory.
    For information on configuring a connection factory see Chapter 14, Configuring the Connection Factory.
  5. Specify the destination onto which the endpoint will place messages.
    For more information see the section called “Configuring a destination”.
  6. If you are using a JMS SOAP provider, specify the location of the WSDL defining the message exchange using the wsdl attribute.
  7. If your JMS destination is a topic, set the pubSubDomaim attribute to true.
  8. If your endpoint is interacting with a broker that only supports JMS 1.0.2, set the jms102 attribute to true.

Configuring a destination
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A provider endpoint chooses the destination to use for sending messages with the following algorithm:
  1. If you provided a custom DestinationChooser implementation, the endpoint will use that to choose it's endpoint.
    For more information about providing custom DestinationChooser implementations see Section 19.1, “Using a Custom Destination Chooser”.
  2. If you did not provide a custom DestinationChooser implementation, the endpoint will use its default DestinationChooser implementation to choose an endpoint.
    The default destination chooser checks the message exchange received from the NMR for a DESTINATION_KEY property. If the message exchange has that property set, it returns that destination.
  3. If the destination chooser does not return a destination, the endpoint will check to see if you configured the destination explicitly.
    You configure a destination using a Spring bean. The recommend way to configure the destination is to configure the bean separately and refer the bean using the endpoint's destination attribute as shown in Example 16.1, “Configuring a Provider's Destination”. You can also add the bean directly to the endpoint by wrapping it in a jms:destination child element.

    Example 16.1. Configuring a Provider's Destination

    <beans xmlns:jms="http://servicemix.apache.org/jms/1.0"
       ... >
  ...
  <jms:provider service="my:widgetService"
                 endpoint="jbiWidget"
                 destination="#widgetQueue"
                 connectionFactory="#connectionFactory" />
  ...
  <jee:jndi-lookup id="widgetQueue" jndi-name="my.widget.queue">
    <jee:environment>
      java.naming.factory.initial=weblogic.jndi.WLInitialContextFactory
      java.naming.provider.url=t3://localhost:7001
    </jee:environment>
  </jee:jndi-lookup>
  ...
</beans>
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  4. If the destination chooser does not return a destination and you did not explicitly configure a destination, the endpoint will use the value of the destinationName attribute to choose its destination.
    The destinationName attribute takes a string that is used as the name of the destination to use. The binding component's default behavior when you provide a destination name is to resolve the destination using the standard JMS Session.createTopic() and Session.createQueue() methods to resolve the JMS destination.
    Note
    You can override the binding component's default behavior by providing a custom DestinationResolver implementation. See Section 19.2, “Using a Custom Destination Resolver”.

Examples
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Example 16.2, “Basic Configuration for a Generic Provider Endpoint” shows the basic configuration for a plain JMS provider endpoint.

Example 16.2. Basic Configuration for a Generic Provider Endpoint

<beans xmlns:jms="http://servicemix.apache.org/jms/1.0"
       ... >
  ...
  <jms:provider service="my:widgetService"
                endpoint="jbiWidget"
                destinationName="widgetQueue"
                connectionFactory="#connectionFactory" />
  ...
</beans>
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Example 16.3, “Basic Configuration for a SOAP Provider Endpoint” shows the basic configuration for a SOAP JMS provider endpoint.

Example 16.3. Basic Configuration for a SOAP Provider Endpoint

<beans xmlns:jms="http://servicemix.apache.org/jms/1.0"
       ... >
  ...
  <jms:soap-provider wsdl="classpath:widgets.wsdl"
                     destinationName="widgetQueue"
                     connectionFactory="#connectionFactory" />
  ...
</beans>
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