Apache Camel #4 - Bean Validation

There is a lot of cases where we needed to write validation for data input. This "problem" can be easily solved in Camel by using Bean Validation component.

Imagine we have a JSON input in our route and we want to validate payload.

 { "name":"Jane Doe", "cardNumber":"377198642272436", "email":"jane@doe.com", "paid":true, "price":1.25 } 

To do that, we first we must unmarshall that payload to POJO.
But first, we must create a class with the same parameters as JSON and add Hibernate Validation annotations.

 @NotNull @Length(min = 1, max = 60) private String name; @CreditCardNumber private String cardNumber; @Email private String email; @NotNull private boolean paid; @Min(0.1) private int price; 

And then we add this to our Camel route.

 //define a datasource for the class you want to validate. GsonDataSource dataSource = new GsonDatasource(JsonDto.class); //unmarshal JSON to POJO .unmarshall(dataSource) //Validate data .to("bean-validator:someLabelHere) 

When that unmarshalled data is sent to bean validator, that objects will be validated by annotations we set for JsonDto fields.

Thank you for your attention.