Very often the component creates the endpoint using an uri, and
therefore you have the uri already.
But if you create the endpoint manually without a component, and just
configure the endpoint using getter/setter, then there is no uri per
see.
And then you can implement that method to construct the uri to use.
On Thu, Nov 21, 2013 at 6:48 AM, P Manchanda <manchan...@yahoo.com> wrote:
> Hi Camel Experts,
>
> I am newbie to Apache Camel and was doing a hands-on tutorial to create a
> custom component. That's when I stumbled on this as to why
> DefaultEndpoint.createEndpointUri() is not an abstract method, even when it
> has to be overwritten.
>
> The implementation of this method in the parent class - DefaultEndpoint-
> returns null:
>
> /**
> * A factory method to lazily create the endpointUri if none is specified
> */
> protected String createEndpointUri() {
> return null;
> }
>
>
> My custom endpoint was extending the DefaultEndpoint and as a first step I
> only over-rode the abstract method. This led me to the following exception on
> context start up. My camel context is embedded in tomcat:
>
> java.lang.IllegalArgumentException: endpointUri is not specified and
> com.kronos.prince.camel.endpoint.MyJDBCEndpoint does not implement
> createEndpointUri() to create a default value
> at
> org.apache.camel.impl.DefaultEndpoint.getEndpointUri(DefaultEndpoint.java:154)
> at
> org.apache.camel.impl.DefaultEndpoint.toString(DefaultEndpoint.java:139)
> at java.lang.String.valueOf(String.java:2854)
> at java.lang.StringBuilder.append(StringBuilder.java:128)
> at
> org.apache.camel.impl.EventDrivenConsumerRoute.toString(EventDrivenConsumerRoute.java:50)
> at
> org.apache.camel.management.mbean.ManagedRoute.<init>(ManagedRoute.java:62)
> at
> org.apache.camel.management.mbean.ManagedSuspendableRoute.<init>(ManagedSuspendableRoute.java:30)
> at
> org.apache.camel.management.DefaultManagementObjectStrategy.getManagedObjectForRoute(DefaultManagementObjectStrategy.java:119)
> at
> org.apache.camel.management.DefaultManagementLifecycleStrategy.onRoutesAdd(DefaultManagementLifecycleStrategy.java:523)
> at org.apache.camel.impl.RouteService.warmUp(RouteService.java:156)
> at
> org.apache.camel.impl.DefaultCamelContext.doWarmUpRoutes(DefaultCamelContext.java:2109)
> at
> org.apache.camel.impl.DefaultCamelContext.safelyStartRouteServices(DefaultCamelContext.java:2039)
> at
> org.apache.camel.impl.DefaultCamelContext.doStartOrResumeRoutes(DefaultCamelContext.java:1827)
> at
> org.apache.camel.impl.DefaultCamelContext.doStartCamel(DefaultCamelContext.java:1699)
> at
> org.apache.camel.impl.DefaultCamelContext.doStart(DefaultCamelContext.java:1544)
> at
> org.apache.camel.support.ServiceSupport.start(ServiceSupport.java:61)
>
> at
> org.apache.camel.impl.DefaultCamelContext.start(DefaultCamelContext.java:1512)
> at
> org.apache.camel.component.servletlistener.CamelServletContextListener.contextInitialized(CamelServletContextListener.java:162)
> at
> org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4791)
> at
> org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5285)
> at
> org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
> at
> org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:901)
> at
> org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:877)
> at
> org.apache.catalina.core.StandardHost.addChild(StandardHost.java:618)
>
> at
> org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:1100)
> at
> org.apache.catalina.startup.HostConfig$DeployDirectory.run(HostConfig.java:1618)
> at
> java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
> at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)
> at java.util.concurrent.FutureTask.run(FutureTask.java:166)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
> at java.lang.Thread.run(Thread.java:722)
>
> A search on the net didn't help much to resolve this problem. So, i dived int
> the camel's source code and found out that most of the endpoints like
> JDBCEndpoint, JMSEndpoint override this method.
>
> Doing the same in my custom endpoint fixed the problem. Am I missing
> something here and there is some other way to over come the above mentioned
> exception.
>
> ___________________
> Thks & brgds
> P Manchanda
> Mobile: +91-9811210374
--
Claus Ibsen
-----------------
Red Hat, Inc.
Email: cib...@redhat.com
Twitter: davsclaus
Blog: http://davsclaus.com
Author of Camel in Action: http://www.manning.com/ibsen
