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POjavax.validation.ConstraintViolationException: Bean Validation constraint(s) violated on preUpdate validation
 

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    <p>I'm having an annoying error message while trying to insert new element in a many to many relationship using JPA 2.0, SpringMvc 3.0.</p> <p>I have a table with States and another one with Persons. A person can be linked to many states and a state to many persons. In this particular case, I have a listOfStates and then a person and I would like to insert those elements in my many to many relationships.</p> <p><strong>ManyToMany Relationship (in table STATE)</strong></p> <pre><code> //bi-directional many-to-many association to Appointment @ManyToMany(cascade=CascadeType.ALL) @JoinTable( name="PERSON_STATE" , joinColumns={ @JoinColumn(name="PERSON_ID", nullable=false) } , inverseJoinColumns={ @JoinColumn(name="CODE_STATE", nullable=false) } ) </code></pre> <p><strong>DAO Code THAT I'm calling from my controller</strong></p> <pre><code>try{ getEntityManager().getTransaction().begin(); getEntityManager().persist(myPerson); IStateDAO stateDAO = new StateDAO(); for (int i=0; i&lt;listOfStates.length; i++){ State myState = stateDAO.findState(listOfStates[i]); if (myState != null){ myState.getPersons().add(myPerson); getEntityManager().persist(myState); } } getEntityManager().getTransaction().commit(); getEntityManager().close(); } catch (RuntimeException re) { getEntityManager().close(); throw re; } </code></pre> <p>The funny thing is that this code is working fine when I'm not inserting data from a web page. What i am doing wrong here? I already have some persons and states in the DB.</p> <p><strong>Full Stack Error Message:</strong></p> <pre><code>org.springframework.web.util.NestedServletException: Request processing failed; nested exception is javax.validation.ConstraintViolationException: Bean Validation constraint(s) violated while executing Automatic Bean Validation on callback event:'preUpdate'. Please refer to embedded ConstraintViolations for details. javax.validation.ConstraintViolationException: Bean Validation constraint(s) violated while executing Automatic Bean Validation on callback event:'preUpdate'. Please refer to embedded ConstraintViolations for details. </code></pre> <p>Any pointer would be really appreciated. Thanks in advance you all.</p>
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