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  1. POJPA 2.0 : Exception to use javax.validation.* package in JPA 2.0
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    <p>when i try to using bean validation with JPA using hibernate , the follwoing exception will occur :</p> <pre><code>Exception in thread "main" javax.persistence.PersistenceException: [PersistenceUnit: Chapter11] Unable to build EntityManagerFactory at org.hibernate.ejb.Ejb3Configuration.buildEntityManagerFactory(Ejb3Configuration.java:915) at org.hibernate.ejb.Ejb3Configuration.buildEntityManagerFactory(Ejb3Configuration.java:890) at org.hibernate.ejb.HibernatePersistence.createEntityManagerFactory(HibernatePersistence.java:57) at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:63) at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:47) at example.test.Test.main(Test.java:18) Caused by: org.hibernate.HibernateException: Error applying BeanValidation relational constraints at org.hibernate.cfg.beanvalidation.BeanValidationIntegrator.applyRelationalConstraints(BeanValidationIntegrator.java:219) at org.hibernate.cfg.beanvalidation.BeanValidationIntegrator.integrate(BeanValidationIntegrator.java:126) at org.hibernate.internal.SessionFactoryImpl.&lt;init&gt;(SessionFactoryImpl.java:306) at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1744) at org.hibernate.ejb.EntityManagerFactoryImpl.&lt;init&gt;(EntityManagerFactoryImpl.java:94) at org.hibernate.ejb.Ejb3Configuration.buildEntityManagerFactory(Ejb3Configuration.java:905) ... 5 more Caused by: java.lang.reflect.InvocationTargetException at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.lang.reflect.Method.invoke(Unknown Source) at org.hibernate.cfg.beanvalidation.BeanValidationIntegrator.applyRelationalConstraints(BeanValidationIntegrator.java:208) ... 10 more Caused by: java.lang.NoClassDefFoundError: javax/validation/ParameterNameProvider at org.hibernate.validator.HibernateValidator.createGenericConfiguration(HibernateValidator.java:41) at javax.validation.Validation$GenericBootstrapImpl.configure(Validation.java:269) at javax.validation.Validation.buildDefaultValidatorFactory(Validation.java:111) at org.hibernate.cfg.beanvalidation.TypeSafeActivator.getValidatorFactory(TypeSafeActivator.java:521) at org.hibernate.cfg.beanvalidation.TypeSafeActivator.applyDDL(TypeSafeActivator.java:119) ... 15 more Caused by: java.lang.ClassNotFoundException: javax.validation.ParameterNameProvider at java.net.URLClassLoader$1.run(Unknown Source) at java.net.URLClassLoader$1.run(Unknown Source) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(Unknown Source) at java.lang.ClassLoader.loadClass(Unknown Source) at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source) at java.lang.ClassLoader.loadClass(Unknown Source) ... 20 more </code></pre> <p>i am new to use validation package and i have not knowledge of JAVA EE beans . how to use this validation package with jpa entity following is my code : </p> <pre><code> public class Employee implements Serializable , EmployeeDetail{ private static final long serialVersionUID = 1L; @Id @GeneratedValue private int id; @NotNull private String name; ____________________ public class Test { public static void main(String[] args) { EntityManagerFactory emf = Persistence.createEntityManagerFactory("Chapter11"); EntityManager em = emf.createEntityManager(); EntityTransaction etr = em.getTransaction(); etr.begin(); ------------------ FullTimeEmployee flEmp = new FullTimeEmployee(); flEmp.setName("Harmeet Singh"); flEmp.setPension(56000); flEmp.setSalary(100000); ValidatorFactory factory = Validation.buildDefaultValidatorFactory(); Validator validator = factory.getValidator(); validator.validate(flEmp, Employee.class); em.persist(flEmp); etr.commit(); </code></pre>
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