bean:beanID[?options]
Where beanID can be any string which is used to lookup look up the bean in the Registry
Name | Type | Default | Description |
---|---|---|---|
method
|
String
|
null
|
The method name from the bean that will be invoked. If not provided, Camel will try to determine the method itself. In case of ambiguity an exception will be thrown. See Bean Binding for more details. From Camel 2.8 onwards you can specify type qualifiers to pin-point exact method to use for overloaded methods. From Camel 2.9 onwards you can specify parameter values directly in the method syntax. |
cache
|
boolean
|
false
|
If enabled, Fuse Mediation Router will cache the result of the first Registry look-up. Cache can be enabled if the bean in the Registry is defined as a singleton scope. |
multiParameterArray
|
boolean
|
false
|
Fuse Mediation Router 1.5: How to treat the parameters which are
passed from the message body; if it is true , the In message body should
be an array of parameters. |
You can append query options to the URI in the following format,
?option=value&option=value&...
The object instance that is used to consume messages must be explicitly registered with
the Registry. For example, if you are using Spring you must
define the bean in the Spring configuration, spring.xml
; or if you don't
use Spring, put the bean in JNDI.
// lets populate the context with the services we need // note that we could just use a spring.xml file to avoid this step JndiContext context = new JndiContext(); context.bind("bye", new SayService("Good Bye!")); CamelContext camelContext = new DefaultCamelContext(context);
Once an endpoint has been registered, you can build routes that use it to process exchanges.
// lets add simple route camelContext.addRoutes(new RouteBuilder() { public void configure() { from("direct:hello").to("bean:bye"); } });
A bean: endpoint cannot be defined as the input to the route; i.e. you cannot consume from it, you can only route from some inbound message Endpoint to the bean endpoint as output. So consider using a direct: or queue: endpoint as the input.
You can use the createProxy()
methods on ProxyHelper to create a proxy that will generate BeanExchanges and send them to any
endpoint:
Endpoint endpoint = camelContext.getEndpoint("direct:hello"); ISay proxy = ProxyHelper.createProxy(endpoint, ISay.class); String rc = proxy.say(); assertEquals("Good Bye!", rc);
And the same route using Spring DSL:
<route> <from uri="direct:hello"> <to uri="bean:bye"/> </route>
Fuse Mediation Router also supports invoking Bean as an Endpoint. In the route below:
<camelContext xmlns="http://camel.apache.org/schema/spring"> <route> <from uri="direct:start"/> <to uri="myBean"/> <to uri="mock:results"/> </route> </camelContext> <bean id="myBean" class="org.apache.camel.spring.bind.ExampleBean"/>
What happens is that when the exchange is routed to the myBean
Fuse Mediation Router
will use the Bean Binding to invoke the bean. The source
for the bean is just a plain POJO:
public class ExampleBean { public String sayHello(String name) { return "Hello " + name + "!"; } }
Fuse Mediation Router will use Bean Binding to invoke the
sayHello
method, by converting the Exchange's In body to the
String
type and storing the output of the method on the Exchange Out
body.
How bean methods to be invoked are chosen (if they are not specified explicitly through the method parameter) and how parameter values are constructed from the Message are all defined by the Bean Binding mechanism which is used throughout all of the various Bean Integration mechanisms in Fuse Mediation Router.
Class component