How to make Camel filter in SwitchYard component

[tungtd]

Hi everybody,

There are some ways to filter a Bean component in Camel. One of the most simple way is using method name.

<route>
<from uri="direct:start"/>
<filter>
<method ref="myPredicate"method="isWhatIWant"/>
<to uri="mock:boston"/>
</filter>
</route>

So, Is there any way to make Filter works with SwitchYard component by method name?

[jorgemoralespou_2]

Hi Tung,

This should work out of the box with SwitchYard. Make the Bean a @Named bean and use filter to select the method. I haven't tried it, but should work as it is Camel feature.

from("switchyard://StartService")
.filter().method(MyBean.class, "isWhatIWant").to("switchyard://BostonService").end();

It is just a matter of you trying.

[tungtd]

Hi Jorge. There is no Bean in here. My Component has the Java interface and Java Camel DSL as the component's implementation. The Java interface has methods and I want to divide the invocation of each method to separating processing, for example:

from("switchyard://PersonManagement")

// if invoked method was save

to("sql:persistSomething....")

// if invoked method was delete

to("sql:deleteSomething...")

[jorgemoralespou_2]

Hi Tung,

Then you have some options:

• To do ContentBasedRouting based on the method being invoked. (It is set as "org.switchyard.operationName").
• Have different implementations for you component, each for every method.

First option is the easiest one, so you could do something like:

from("switchyard://PersonManagement")

.choose()

.when(header("org.switchyard.operationName").isEqualTo("save"))

                    .to("switchyard://sqlPersistSomething....")

                .when(header("org.switchyard.operationName").isEqualTo("delete"))

                    .to("switchyard://sqlDeleteSomething...")

                .otherwise()

                    .to("direct:error");

[tungtd]

Thank you very much, Jorge. But where can I find the properties such as "org.switchyard.operationName". Is the anywhere I can find them?

[jorgemoralespou_2]

Hi,

It is difficult to say. These properties are set internally by the engine. You can see them if you enable message tracing for the execution of a composite or debugging. I do not think there is documentation around these variables. I would encourage you to open a JIRA for a document with that info.

Keep in mind I'm a user not a SwitchYard developer ;-)