docs: private void ensurePrecisionAndScale(FieldDescriptorDef fieldDef, String checkLevel)
      {
          fieldDef.setProperty(PropertyHelper.OJB_PROPERTY_DEFAULT_PRECISION, null);
          fieldDef.setProperty(PropertyHelper.OJB_PROPERTY_DEFAULT_SCALE, null);
          if (!fieldDef.hasProperty(PropertyHelper.OJB_PROPERTY_PRECISION))
          {
              String defaultPrecision = JdbcTypeHelper.getDefaultPrecisionFor(fieldDef.getProperty(PropertyHelper.OJB_PROPERTY_JDBC_TYPE));
  
              if (defaultPrecision != null)
              {
                  LogHelper.warn(true,
                                 FieldDescriptorConstraints.class,
                                 "ensureLength",
                                 "The field "+fieldDef.getName()+" in class "+fieldDef.getOwner().getName()+" has no precision setting though its jdbc type requires it (in most databases); using default precision of "+defaultPrecision);
                  fieldDef.setProperty(PropertyHelper.OJB_PROPERTY_DEFAULT_PRECISION, defaultPrecision);
              }
              else if (fieldDef.hasProperty(PropertyHelper.OJB_PROPERTY_SCALE))
              {
                  fieldDef.setProperty(PropertyHelper.OJB_PROPERTY_DEFAULT_PRECISION, "1");
              }
          }
          if (!fieldDef.hasProperty(PropertyHelper.OJB_PROPERTY_SCALE))
           {
              String defaultScale = JdbcTypeHelper.getDefaultScaleFor(fieldDef.getProperty(PropertyHelper.OJB_PROPERTY_JDBC_TYPE));
  
              if (defaultScale != null)
              {
                  LogHelper.warn(true,
                                 FieldDescriptorConstraints.class,
                                 "ensureLength",
                                 "The field "+fieldDef.getName()+" in class "+fieldDef.getOwner().getName()+" has no scale setting though its jdbc type requires it (in most databases); using default scale of "+defaultScale);
                  fieldDef.setProperty(PropertyHelper.OJB_PROPERTY_DEFAULT_SCALE, defaultScale);
              }
              else if (fieldDef.hasProperty(PropertyHelper.OJB_PROPERTY_PRECISION) || fieldDef.hasProperty(PropertyHelper.OJB_PROPERTY_DEFAULT_PRECISION))
              {
                  fieldDef.setProperty(PropertyHelper.OJB_PROPERTY_DEFAULT_SCALE, "0");
              }
          }
      }