[hibernate-issues] [Hibernate-JIRA] Created: (HV-266) NullPointerException when trying to validate an object with a class-level constraint annotation.

[Marcus Brito (JIRA)]

NullPointerException when trying to validate an object with a class-level constraint annotation.
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                 Key: HV-266
                 URL: http://opensource.atlassian.com/projects/hibernate/browse/HV-266
             Project: Hibernate Validator
          Issue Type: Bug
    Affects Versions: 4.0.1
            Reporter: Marcus Brito


The JPATraversableResolver seems to fumble when passed a property path of "" (constraint on root bean class):
{code}
java.lang.NullPointerException
	at java.lang.Class.searchFields(Class.java:2599)
	at java.lang.Class.getField0(Class.java:2618)
	at java.lang.Class.getField(Class.java:1518)
	at org.hibernate.ejb.util.PersistenceUtilHelper.get(PersistenceUtilHelper.java:84)
	at org.hibernate.ejb.util.PersistenceUtilHelper.isLoadedWithReference(PersistenceUtilHelper.java:76)
	at org.hibernate.ejb.HibernatePersistence.isLoadedWithReference(HibernatePersistence.java:178)
	at javax.persistence.Persistence$1.isLoaded(Persistence.java:81)
	at org.hibernate.validator.engine.resolver.JPATraversableResolver.isReachable(JPATraversableResolver.java:33)
	at org.hibernate.validator.engine.resolver.DefaultTraversableResolver.isReachable(DefaultTraversableResolver.java:112)
	at org.hibernate.validator.engine.resolver.SingleThreadCachedTraversableResolver.isReachable(SingleThreadCachedTraversableResolver.java:47)
	at org.hibernate.validator.engine.ValidatorImpl.isValidationRequired(ValidatorImpl.java:764)
	at org.hibernate.validator.engine.ValidatorImpl.validateConstraint(ValidatorImpl.java:331)
	at org.hibernate.validator.engine.ValidatorImpl.validateConstraintsForRedefinedDefaultGroup(ValidatorImpl.java:278)
	at org.hibernate.validator.engine.ValidatorImpl.validateConstraintsForCurrentGroup(ValidatorImpl.java:260)
	at org.hibernate.validator.engine.ValidatorImpl.validateInContext(ValidatorImpl.java:213)
	at org.hibernate.validator.engine.ValidatorImpl.validate(ValidatorImpl.java:119)
{code}

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