Hi
The ejb component extends the bean component, so you can do what the
bean component supports. In the method you can specify the parameters
separated by comma
https://camel.apache.org/components/latest/bean-component.html
https://camel.apache.org/manual/latest/bean-binding.html
So if the body is a List you can bind the parameters and index as
array/list. Something like this
method=foo(${body[0]}, ${body[1]}, ${body[2]})
On Thu, Aug 26, 2021 at 7:40 PM Mansour Al Akeel
<[email protected]> wrote:
>
> Claus,
> Thank you for taking the time to reply.
> We have multiple web applications, some of them are spring based
> running in wildfly. We need to be able to bridge them, and allow
> talking to an existing EJB application on the same or remote machines.
> We thought using camel brings a value in keeping those applications
> loosely coupled (no remote interfaces are exported).
>
> The ejb method I am trying to invoke:
>
> public Serializable executeTask(String taskName, Serializable params,
> String dbName) throws RemoteException ;
>
> This method is being invoked but with a single argument. For example,
> everything inside the body of the exchange is passed as the first
> argument. The problem is having multiple arguments. Here's my code:
>
> List<String> params = new LinkedList<String>() {
> {
> add("taskNameValue");
> add("ParamsValue");
> add("dbNameValue");
> }
> };
> String values = String.join(System.lineSeparator(), params);
> from("timer:ejbTimer?period=1000")
> .setBody(simple(values))
> .to("ejb:java:global/appName/remote/MyEJB?method=executeTask") ;
>
> This is working by invoking executeTask with arguments:
>
> taskName = ["taskNameValue", "ParamsValue" , "dbNameValue"]
> params = null
> dbName = null
>
> What I am expecting is to invoke the method with arguments:
> taskName = "taskNameValue"
> params = "ParamsValue"
> dbName = "dbNameValue"
>
> By setting the whole body to some value, the whole body is passed as
> the first argument. If there is a way to map these arguments to the
> correct method signature, then this will help me.
> And by the way, if you have a better idea to achieve this, then please share
> it.
>
> On Thu, 26 Aug 2021 at 11:54, Claus Ibsen <[email protected]> wrote:
> >
> > Hi
> >
> > I am not sure we understand exactly your question. The message body is
> > set to a fixed String value of param-1, and then you want to call an
> > EJB.
> > What is the EJB method signature?
> >
> > And EJB can be called from regular Java so you can always just let
> > Camel call a bean / processor, and from there you can call your EJB if
> > something is complex.
> >
> > On Thu, Aug 26, 2021 at 5:16 PM Mansour Al Akeel
> > <[email protected]> wrote:
> > >
> > > I am not sure if there is missing information preventing this question
> > > from getting an answer.
> > >
> > > On Wed, 25 Aug 2021 at 12:08, Mansour Al Akeel
> > > <[email protected]> wrote:
> > > >
> > > > We have a legacy system that we are trying to integrate with. The
> > > > system is composed of EJB 3.0
> > > >
> > > > Things are fine when calling an ejb method with no arguments. However,
> > > > I am unable to invoke methods with parameters.
> > > >
> > > > The documentation for EJB component
> > > > https://camel.apache.org/components/2.x/ejb-component.html states
> > > > that, we can use "parameters" as query parameters, and type is Map.
> > > > Which is a bit confusing.
> > > >
> > > > So starting with something like:
> > > >
> > > > <camel:route id="ejbRoute">
> > > > <camel:from uri="timer:ejbTimer?period=1000" />
> > > > <camel:setBody>
> > > > <camel:simple>param-1</camel:simple>
> > > > </camel:setBody>
> > > > <camel:to
> > > > uri="ejb:java:global/app/ejbName?method=myMethod" />
> > > > <camel:log message="[Results] ===> ${body}" />
> > > > </camel:route>
> > > >
> > > > What is the correct way to pass multiple parameters to a method ?
> > > >
> > > > I am using camel-ejb-2.25.3
> > > >
> > > > Thank you in advance
> >
> >
> >
> > --
> > Claus Ibsen
> > -----------------
> > http://davsclaus.com @davsclaus
> > Camel in Action 2: https://www.manning.com/ibsen2
--
Claus Ibsen
-----------------
http://davsclaus.com @davsclaus
Camel in Action 2: https://www.manning.com/ibsen2
