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checkAvailability

This component uses the WSIFBinding class to integrate WSIF to ServiceMix as specified in the class property. Its definitionResource property is set to read the classpath:org/servicemix/components/wsif/service.wsdl file, which is the WSDL file that will be used. The service.wsdl file can be found at [servicemix_src_install_dir]\servicemix-components\src\test\resources\org\apache\servicemix\components\wsif. In the init() method of the WSIFBinding class, service.wsdl is read to define the binding extension.

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MDB

This MDB is the actual implementation of the service. It acts like a message listener on the queue specified in the config files. When a message is delivered, it extracts the body which is a ZIP Code. It then applies some logic to determine whether DSL service is available at this ZIP Code or not. For simplicity, it just returns true for all ZIP Codes < 50000 and false otherwise. The return message is sent to the queue specified in the replyTo field of the request message. NOTE: The MDB must encode the correct JMSCorrelationID in the return message in order for it to be picked up by WSIF.