Hi all, BeanValidation is promoted as *THE validation framework* in the EE environment. it can already be used in JPA and JSF. In the future they plan to have it also in other areas like JAX-RS.
Another area where we could start using it, is with CDI. With the creation of an Interceptor, it is possible to develop a mechanism that allow validation of method parameter values. Aparently Apache BVal is taking this up (thx Gerhard for the input, see here http://carinae.net/2010/04/automatic-validation-method-calls-with-jsr-303-appendix-c/), but a generic solution could be made available in Codi. Since there is no method forseen in the BeanValidation spec to validate a value based on an annotation (only methods for validating a property within a class or a complete object), I was forced to create a hack with dynamically created classes. But in a POC I was able to use the following declarations * @ParameterValidation public String sayHelloMinimumLength(@Size(min = 3) String name) { return "Hello "+name; } @ParameterValidation public String sayHello(@NotNull @Valid Person person) { return "Hello "+person.getLastName(); }* And I did some small (but successful) tests in the following environments - Plain SE (JUnit tests) - Tomcat 6 - JBoss 6 (M5) The performance is also acceptable. Executing 1000 tests on the sayHelloMinimumLength method as described above, adds about 300 ms (in total, so 0.3 ms per call). So with this message I would like to have the opinion of the community about adding such functionality to Codi. I think we have 3 options: 1) Add it to Codi itself (I think the BV module is the best candidate) 2) Put the logic in an add-on because it is useful but not all projects can/will use it. 3) Spend our time to other topics because it is useless. [?] If you like the idea, I do some further work on the code an supply a patch or the add-on. Regards Rudy.
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