Saving WS payload into database in Camel - jpa

Question

I'm absolutely newbie in Apache Camel. I'd like to create a very simple app in which it would accept WS calls and save the payload into a database using JPA.
The payload's structure is quite simple. The root is a Marriage object. It contain some String and int and Date fields, a wife, a husband and a list of children (Person objects).
My goal is to save these data into two tables of a database: MARRIAGE, PERSON.
I've successfully created a jaxws:endpoint in which I listen and respond a dummy response.
I've created the tables and JPA entities.
I don't know how to "connect" the WS implementation with the spring configured JpaTemplate. Should I solve this problem with Camel routing using somehow a #Converter class or #Injet it into the WS implementing class by Spring. I'm confused.
Should I use cxf endpoint instead of jaxws endpoint?

Answer 1

You need to use camle-cxf endpoint if you want to use camel. What I would do is expose the endpoint as a camle-cxf endpoint. Something like this:
<camel-cxf:cxfEndpoint id="listenerEndpoint"
address="http://0.0.0.0:8022/Dummy/services/Dummy"
wsdlURL="wsdl/DummyService.wsdl"
xmlns:tns="http://dummy.com/ws/Dummy"
serviceName="tns:Dummy"
endpointName="tns:DummyService">
<camel-cxf:properties>
<entry key="schema-validation-enabled" value="true"/>
<entry key="dataFormat" value="PAYLOAD"/>
</camel-cxf:properties>
</camel-cxf:cxfEndpoint>
Then I would have a simple Spring bean like this:
<bean id="processor" class="com.dummy.DummyProcessor">
<property name="..." value="..."/> //there goes your data source of jdbc template or whatever...
</bean>
If you want to use JPA just configure all the configuration and inject your entity manager into this bean.
The actual class would look something like this:
public class DummyProcessor {
#Trancational //If you need transaction to be at this level...
public void processRequest(Exchange exchange) {
YourPayloadObject object = exchange.getIn().getBody(YourPayloadObject.class);
//object - is your object from SOAP request, now you can get all the data and store it in the database.
}
}
The camel route would be like this:
<camel:camelContext trace="true" id="camelContext" >
<camel:route id="listenerEndpointRoute">
<camel:from uri="cxf:bean:listenerEndpoint?dataFormat=POJO&synchronous=true" />
<camel:log message="Got message. The expected operation is :: ${headers.operationName}"/>
<camel:choice>
<camel:when>
<camel:simple>${headers.operationName} == 'YourPayloadObject'</camel:simple>
<camel:bean ref="processor" method="processRequest"/>
</camel:when>
</camel:choice>
<camel:log message="Got message before sending to target: ${headers.operationName}"/>
<camel:to uri="cxf:bean:someTargetEndpointOrSomethingElse"/>
<camel:log message="Got message received from target ${headers.operationName}"/>
</camel:route>
</camel:camelContext>
Hope this helps.