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copied!<p>Justin,</p> <p>I've been working with Hibernate Validator for the last couple of months. While I have not run into the same issue that you've described, I also have not extended <code>ClassValidator</code>. For custom validation, the <a href="http://docs.jboss.org/hibernate/stable/validator/reference/en/html/validator-defineconstraints.html#validator-defineconstraints-own" rel="nofollow noreferrer">Hibernate Reference Guide</a> indicates that writing custom constraints is the way to go. </p> <p>I have been able to use the built-in constraints almost exclusively on my current project. In one case, where I needed to do some very specific calculations on an integer field, I wrote a custom constraint as described in the reference guide; it was a breeze.</p> <p>Speaking to your specific problem, I wrote a simple test app as a sort of sanity check on my part:</p> <pre><code>import org.hibernate.validator.*; public class HibernateValidatorTest { @NotEmpty @NotNull private String validateMe; public static void main ( String[] args ) { ClassValidator<HibernateValidatorTest> validator = new ClassValidator<HibernateValidatorTest>( HibernateValidatorTest.class ); InvalidValue[] inVals = validator.getInvalidValues( new HibernateValidatorTest() ); for ( InvalidValue inVal : inVals ) { System.out.println( inVal.getMessage() ); } } } </code></pre> <p>With both Hibernate constraints on the <code>validateMe</code> field, the console output is:</p> <pre><code>may not be null or empty may not be null </code></pre> <p>Removing one or the other has the expected effect of printing only a single message to the console.</p> <p>I hope this is helpful.</p> <p>Brian T. Grant</p>

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