[hibernate-issues] [Hibernate-JIRA] Resolved: (HV-146) ConstraintValidator impls cannot inherit from a super class implementing ConstraintValidator

ConstraintValidator impls cannot inherit from a super class implementing ConstraintValidator -------------------------------------------------------------------------------------------- Key: HV-146 URL: http://opensource.atlassian.com/projects/hibernate/browse/HV-146 Project: Hibernate Validator Issue Type: Bug Components: engine Affects Versions: 4.0.0.Alpha3 Reporter: Eddy Verbruggen Fix For: 4.0.0.Beta2 Original Estimate: 1 hour Remaining Estimate: 1 hour My Validator classes extend a common superclass, which in turn implements the ConstraintValidator interface. This version of Hibernate Validator can't cope with that class structure due to a little bug in ValidatorTypeHelper.resolveTypes. The last bit of that method calls itself recursively, but ignores returnvalues, so the code always falls through to "return null". else { resolveTypes( resolvedTypes, rawType.getGenericSuperclass() ); for ( Type genericInterface : rawType.getGenericInterfaces() ) { resolveTypes( resolvedTypes, genericInterface ); } } } //else we don't care I think return null; Can it be changed to something like this please: else { Type returnedType = resolveTypes( resolvedTypes, rawType.getGenericSuperclass() ); if ( returnedType != null ) { return returnedType; } for ( Type genericInterface : rawType.getGenericInterfaces() ) { returnedType = resolveTypes( resolvedTypes, genericInterface ); if ( returnedType != null ) { return returnedType; } } } } //else we don't care I think return null; The stacktrace is: java.lang.NullPointerException at org.hibernate.validation.util.ValidatorTypeHelper.extractType(ValidatorTypeHelper.java:68) at org.hibernate.validation.util.ValidatorTypeHelper.getValidatorsTypes(ValidatorTypeHelper.java:57) at org.hibernate.validation.engine.ConstraintTree.findMatchingValidatorClass(ConstraintTree.java:163) at org.hibernate.validation.engine.ConstraintTree.getInitalizedValidator(ConstraintTree.java:144) at org.hibernate.validation.engine.ConstraintTree.validateConstraints(ConstraintTree.java:113) at org.hibernate.validation.engine.MetaConstraint.validateConstraint(MetaConstraint.java:126) at org.hibernate.validation.engine.ValidatorImpl.validatePropertyForGroup(ValidatorImpl.java:419) at org.hibernate.validation.engine.ValidatorImpl.validateProperty(ValidatorImpl.java:373) at org.hibernate.validation.engine.ValidatorImpl.validateProperty(ValidatorImpl.java:132)