package de.juplo.plugins.hibernate4;
   
   import javax.validation.Validation;
   
   import org.hibernate.cfg.Configuration;
   import org.hibernate.cfg.beanvalidation.TypeSafeActivatorAccessor;
   import org.hibernate.dialect.Dialect;
   import org.hibernate.metamodel.source.MappingException;
   
  
  /**
   * This integration is usually performed by BeanValidationIntegrator.
   * Unfortunately, that integration will only be activated upon
   * initialization of the ServiceRegistry, which initializes
   * DatasourceConnectionProviderImpl, which looks up the datasource,
   * which requires a JNDI context ...
   * We therefore reimplement the relevant parts of BeanValidatorIntegrator.
   * Since that must occur after secondPassCompile(), which is invoked by
   * Configuration.generateSchemaCreationScript, which is invoked by
   * SchemaExport, some fancy subclassing is needed to invoke the integration
   * at the right time.
   * @author Mark Robinson <mark@mrobinson.ca>
   * @author Frank Schimmel <frank.schimmel@cm4all.com>
   */
  public class ValidationConfiguration extends Configuration
  {
    private static final long serialVersionUID = 1L;
  
    private Class<Dialect> dialectClass;
  
    public ValidationConfiguration(final String dialectClass)
    {
      try {
          this.dialectClass = (Class<Dialect>) Class.forName(dialectClass);
      } catch (ClassNotFoundException e) {
          throw new RuntimeException(e);
      }
    }
  
    @Override
    protected void secondPassCompile() throws MappingException
    {
      super.secondPassCompile();
  
      try
      {
        TypeSafeActivatorAccessor.applyRelationalConstraints(
            Validation.buildDefaultValidatorFactory(),
            classes.values(),
            getProperties(),
            dialectClass.newInstance()
            );
      }
      catch (Exception e)
      {
        throw new RuntimeException(e);
      }
    }
  }