xdoclet springvalidationxml does not parse validator on setters of classes

Hello,

I have a question about some restrictions in the springvalidationxml.
I have a setter in a class that is passing as a parameter a Message 
object (Message is a class of mine).
User.java
...
    /**
     * @param name
     *            The name to set.
     * @spring.validator type="messageRequired"
     */
    public void setName(Message name) {
        this._name = name;
    }

What I want as a result is the following, (messageRequired is a custom 
Validator and is working perfectly with this result):
validation.xml:
...
      <form name="user">
              <field property="name"
                     depends="messageRequired">

                  <arg0 key="user.name"/>
              </field>
      </form>


But I cannot get this output unless the setter is a String. I know that 
I can use recursion if I put "@spring.validator" to the setName setter, 
and then "@spring.validator type="required" to a string setter in the 
Messages, but even like that my problem still exists because I don't 
have a String setter but a Map setter (which is not parsed by xdoclet).

I do not understand why the setter is restricted to String, as custom 
Validators cannot be used this way. Can I change this restriction by 
using a custom template? I saw the original one but I don't understand 
how to add this functionality. Can anyone give me an advice? I would 
really appreciate some help.

dimitris

------------------------------
I don't think the following is necessary but I've added for giving a 
bigger picture.

The message contains the following setter only (there is no String 
setter, a Map is used because the number of fields is not known on 
compilation):

Message.java:
...
    /**
     * @param _localizedMessages
     *            The _localizedMessages to set.
     */
    public void setLocalizedMessages(Map localizedMessages) {
        this._localizedMessages = localizedMessages;
    }


I am running webdoclet on build.xml with the following code:
build.xml:
...
<webdoclet destdir="${organizer.common.dir}/WEB-INF" 
mergedir="${conf.dir}/metadata" force="${xdoclet.force}" 
excludedtags="@version,@author" verbose="true">
            <fileset dir="${src.dir}">
                <include name="**/*.java" />
            </fileset>
            <springvalidationxml/>
</webdoclet>
...

I have a custom validator in validator-custom-rules:
validator-custom-rules.xml:
...
        <validator name="messageRequired"
            classname="com.company.common.utils.validation.ValidationUtils"
               method="validateMessageRequired"
          methodParams="java.lang.Object,
                               org.apache.commons.validator.ValidatorAction,
                               org.apache.commons.validator.Field,
                               org.springframework.validation.Errors"
                  msg="errors.messageRequired">
      </validator>

Here is my custom Validator:
ValidationUtils.java:
...
    public static boolean validateMessageRequired(Object bean, 
ValidatorAction va,
            Field field, Errors errors) {

       // getValueAsMessage is returning the Property object as a Message
        Message message = getValueAsMessage(bean, field.getProperty());

        return rejectMessageIfEmptyOrBlank(errors, field.getProperty(), 
message);
    }


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