Validator, @Embedded and deep property names

jefmsmit · **Joined:** Mon Dec 12, 2005 6:00 pm **Posts:** 11

I have an embedded attribute on my domain object that looks like this:

Code:

@Embedded
@Valid
public Address getAddress()
{
    return address;
}

All is well, the various fields on the address object get validated correctly. I'm using the hibernate validation framework to produce InvalidValues and using those InvalidValues to reject fields in Spring MVC's validation framework. The problem is this; if the city field fails validation on address the invalid value says the property name is "city" and the class is Address. Is there anyway to get the property name to be something like "address.city" since this is the property I use with binding in Spring MVC. I'm hoping to avoid writing code that reflectively looks at the domain object and builds these deep property names.

emmanuel · **Posted:** Tue Dec 13, 2005 7:13 am

yes I've done something like that in CVS

jefmsmit · **Joined:** Mon Dec 12, 2005 6:00 pm **Posts:** 11

emmanuel wrote:

yes I've done something like that in CVS

Excellent, I'll check out the HEAD revisions in CVS then. Any tips to point me in the right direction?

Thanks

emmanuel · **Posted:** Tue Dec 13, 2005 12:17 pm

download beta7 and check the doc, I've just uploaded both.

tedberg · **Joined:** Wed Jun 30, 2004 4:02 pm **Posts:** 64

jefmsmit,

I am doing similar work, combining Hibernate Validator with Spring MVC. I have created some JSP tag files that automatically add class="required" or class="optional" to for fields, and add a maxlength attribute based on reflecting over the corresponding annotations. I'm now working on creating a generic validator method to be used by a Spring MVC validator. We could probably share some code and post the results somewhere.

jefmsmit · **Joined:** Mon Dec 12, 2005 6:00 pm **Posts:** 11

tedberg,

I'd be happy to help out. Although I really haven't needed to write much code at all, that was the beauty of using the hibernate validator. Here is all I needed to do in my Spring validator:

Code:

    public boolean supports(Class aClass)
    {
        return DomainObject.class.isAssignableFrom(aClass);
    }

    public void validate(Object object, Errors errors)
    {
        DomainObject domainObject = (DomainObject) object;
        List<InvalidValue> invalids = domainObject.validate();

        for (int i = 0; i < invalids.size(); i++)
        {
            InvalidValue invalidValue = invalids.get(i);
            errors.rejectValue(invalidValue.getPropertyName(), null, invalidValue.getMessage());
        }
    }

I just need to change the invalidValue.getPropertyName() to use the new getPropertyPath method.

tedberg · **Joined:** Wed Jun 30, 2004 4:02 pm **Posts:** 64

I wrote an article describing how to use Hibernate Validator and Spring MVC together.

http://www.ibm.com/developerworks/java/library/j-hibval.html

tedberg · **Joined:** Wed Jun 30, 2004 4:02 pm **Posts:** 64

IBM broke the link to that article. It can be found at:

http://www.triview.com/articles/hibernate/validator/canmeetyourneeds.html