[switchyard-issues] [JBoss JIRA] Created: (SWITCHYARD-201) Camel Component: Implement reference binding support
Camel Component: Implement reference binding support
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Key: SWITCHYARD-201
URL: https://issues.jboss.org/browse/SWITCHYARD-201
Project: SwitchYard
Issue Type: Task
Reporter: Daniel Bevenius
Assignee: Daniel Bevenius
Fix For: 0.1
This task is about adding the ability for Switchyard services to use Camel endpoints by
specifying a reference element in the component configuration. Services can use other
services and those services are declared using references. The idea is to add the ability
for services to specify that they require functionality from a Camel endpoint. The service
might consume from a Camel endpoint or they might produce to a Camel endpoint, or both.
So for example, say you require to call a service that is implemented in Camel. One way
might be to use the @Reference annotation that exists for the Switchyard bean component:
{code}
public class InventoryServiceBean implements InventoryService {
@Reference
WarehouseService warehouseService;
public ReservationResult reservItem(final long itemId) {
if (warehouseService.hasItem(itemId)) {
...
} else {
return new ReservationResult(false, "Could not fullfill reservation
request...");
}
}
}
{code}
And the xml configuration for this component:
{code:xml}
<composite>
<component name="Component">
<service name="InventoryService">
<interface.java
interface="org.switchyard.examples.InventoryService"/>
<implementation.bean
class="org.switchyard.examples.InventoryServiceBean"/>
</service>
<reference name="WarehouseStatusService>
<interface.java
interface="org.switchyard.examples.WarehouseService"/>
<binding.camel uri="invm://warehouseStatusService"/>
</reference>
</component>
<composite>
{code}
The proxy instance might then be create something like this:
{code}
CamelContext camelContext = new DefaultCamelContext();
Endpoint endpoint = camelContext.getEndpoint(uri);
Class[] interfaces = // create class using
WarehousService warehouseService = ProxyHelper.createProxy(endpoint,
"org.switchyard.example.WarehouseService");
warehouseService.hasItem(2);
{code}
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