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Mastering Apache Camel

You're reading from  Mastering Apache Camel

Product type Book
Published in Jun 2015
Publisher Packt
ISBN-13 9781782173151
Pages 238 pages
Edition 1st Edition
Languages
Concepts
Authors (3):
Bilgin Ismet Ibryam Bilgin Ismet Ibryam
Profile icon Bilgin Ismet Ibryam
Jean Baptiste Onofre Jean Baptiste Onofre
Profile icon Jean Baptiste Onofre
Jean-Baptiste Onofré Jean-Baptiste Onofré
Profile icon Jean-Baptiste Onofré
View More author details

Annotations


Depending on your bean, you might have some ambiguity. Camel gives you fine-grained control of the method parameters by providing a set of annotations.

Thanks to the annotations, you can describe the expected binding for both method binding and parameter binding.

For method binding, Camel provides the @Handler annotation. This annotation allows you to specify the method that Camel will use during execution.

For instance, you may have the following bean:

public class MyBean {
  public void other(String class) {  }

public void doMyStuff(String class) { ... }
}

In that case, Camel (without specifying the method to use in the route definition) will fail to find the method to call.

The @Handler annotation removes the ambiguity:

public class MyBean {
  public void other(String class) { … }
  @Handler
public void doMyStuff(String class) { ... }
}

Camel also provides annotations for the method parameters binding. The @Body binds the parameter to the in message body. It allows to bind type like...

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