41.2. Proxying with POJO Format

Overview

If you want to access the content of the Web services messages that pass throught the route, you might prefer to process the messages in POJO format: that is, where the body of the exchange consists of a list of Java objects representing the WS operation parameters. The key advantate of using POJO format is that you can easily process the contents of a message, by accessing the operation parameters as Java objects.
Figure 41.2, “Proxy Route with Message in POJO Format” shows an overview of how to proxy a Web service using an Apache Camel route, where the route processes the messages in POJO format. The key feature of this route is that both the consumer endpoint (at the start of the route) and the producer endpoint (at the end of the route) must be compatible with the POJO data format.

Figure 41.2. Proxy Route with Message in POJO Format

Proxy Route with Message in POJO Format

Consumer endpoint for CXF/POJO

To parse incoming messages into POJO data format, the consumer endpoint at the start of the route must be a Camel CXF endpoint that is configured to use POJO mode. Use the cxf:bean:BeanID URI format to reference the Camel CXF endpoint as follows (where the dataFormat option defaults to POJO): 
<route>
    <from uri="cxf:bean:customerServiceProxy"/>
    ...
</route>
The bean with the ID, customerServiceProxy, is a Camel CXF/POJO endpoint, which is defined as follows: 
<?xml version="1.0" encoding="UTF-8"?>
<beans ...>
  ...  
  <cxf:cxfEndpoint
      id="customerServiceProxy"
      xmlns:c="http://demo.fusesource.org/wsdl/camelcxf"
      address="/Customers"
      endpointName="c:SOAPOverHTTP"
      serviceName="c:CustomerService"
      wsdlURL="wsdl/CustomerService.wsdl"
      serviceClass="org.fusesource.demo.wsdl.camelcxf.CustomerService"
  />
  ...
</beans>

Producer endpoint for CXF/POJO

To convert the exchange body from POJO data format to a SOAP/HTTP message, the producer endpoint at the end of the route must be a Camel CXF endpoint configured to use POJO mode. Use the cxf:bean:BeanID URI format to reference the Camel CXF endpoint as follows (where the dataFormat option defaults to POJO): 
<route>
    ...
    <to uri="cxf:bean:customerServiceReal"/>
</route>
The bean with the ID, customerServiceReal, is a Camel CXF/POJO endpoint, which is defined as follows: 
<?xml version="1.0" encoding="UTF-8"?>
<beans ...>
  ...  
  <cxf:cxfEndpoint
      id="customerServiceReal"
      xmlns:c="http://demo.fusesource.org/wsdl/camelcxf"
      address="http://localhost:8083/Customers"
      endpointName="c:SOAPOverHTTP"
      serviceName="c:CustomerService"
      wsdlURL="wsdl/CustomerService.wsdl"
      serviceClass="org.fusesource.demo.wsdl.camelcxf.CustomerService"
  />
  ...
</beans>