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Chapter 15. Camel Bean Integration

Camel annotations
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As part of the Camel bean integration, Camel comes with a set of annotations that are seamlessly supported by Camel CDI. So you can use any of these annotations in your CDI beans, for example:

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Camel annotation

CDI equivalent

Configuration property 

@PropertyInject("key")
String value;

If using DeltaSpike configuration mechanism: 

@Inject
@ConfigProperty(name = "key")
String value;

See configuration properties for more details.

Producer template injection (default Camel context) 

@Produce(uri = "mock:outbound")
ProducerTemplate producer;
 
@Inject
@Uri("direct:outbound")
ProducerTemplate producer;

Endpoint injection (default Camel context) 

@EndpointInject(uri = "direct:inbound")
Endpoint endpoint;
 
@Inject
@Uri("direct:inbound")
Endpoint endpoint;

Endpoint injection (Camel context by name) 

@EndpointInject(uri = "direct:inbound", context = "foo")
Endpoint contextEndpoint;
 
@Inject
@ContextName("foo")
@Uri("direct:inbound")
Endpoint contextEndpoint;

Bean injection (by type) 

@BeanInject
MyBean bean;
 
@Inject
MyBean bean;

Bean injection (by name) 

@BeanInject("foo")
MyBean bean;
 
@Inject
@Named("foo")
MyBean bean;

POJO consuming 

@Consume(uri = "seda:inbound")
void consume(@Body String body) {
    //...
}
 

Bean component
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You can refer to CDI beans, either by type or name, From the Camel DSL, for example with the Java Camel DSL: 

class MyBean {
	//...
}

from("direct:inbound").bean(MyBean.class);

Or to lookup a CDI bean by name from the Java DSL: 

@Named("foo")
class MyNamedBean {
	//...
}

from("direct:inbound").bean("foo");

Referring beans from Endpoint URIs
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When configuring endpoints using the URI syntax you can refer to beans in the Registry using the # notation. If the URI parameter value starts with a # sign then Camel CDI will lookup for a bean of the given type by name, for example: 

from("jms:queue:{{destination}}?transacted=true&transactionManager=#jtaTransactionManager").to("...");

Having the following CDI bean qualified with @Named("jtaTransactionManager"): 

@Produces
@Named("jtaTransactionManager")
PlatformTransactionManager createTransactionManager(TransactionManager transactionManager, UserTransaction userTransaction) {
    JtaTransactionManager jtaTransactionManager = new JtaTransactionManager();
    jtaTransactionManager.setUserTransaction(userTransaction);
    jtaTransactionManager.setTransactionManager(transactionManager);
    jtaTransactionManager.afterPropertiesSet();
    return jtaTransactionManager;
}
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