package org.keycloak.models.sessions.jpa;
import org.hibernate.exception.ConstraintViolationException;
import org.keycloak.models.ModelDuplicateException;
import org.keycloak.models.ModelException;
import javax.persistence.EntityExistsException;
import javax.persistence.EntityManager;
import java.lang.reflect.InvocationHandler;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.lang.reflect.Proxy;
/**
* @author <a href="mailto:sthorger@redhat.com">Stian Thorgersen</a>
*/
public class PersistenceExceptionConverter implements InvocationHandler {
private EntityManager em;
public static EntityManager create(EntityManager em) {
return (EntityManager) Proxy.newProxyInstance(EntityManager.class.getClassLoader(), new Class[]{EntityManager.class}, new PersistenceExceptionConverter(em));
}
private PersistenceExceptionConverter(EntityManager em) {
this.em = em;
}
@Override
public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
try {
return method.invoke(em, args);
} catch (InvocationTargetException e) {
throw convert(e.getCause());
}
}
public static ModelException convert(Throwable t) {
if (t.getCause() != null && t.getCause() instanceof ConstraintViolationException) {
throw new ModelDuplicateException(t);
} if (t instanceof EntityExistsException) {
throw new ModelDuplicateException(t);
} else {
throw new ModelException(t);
}
}
}