} else if ("positiveInteger".equals(attributeType)) {
returnObject = new PositiveInteger(attribValue);
} else if ("negativeInteger".equals(attributeType)) {
returnObject = new NegativeInteger(attribValue);
} else if ("nonNegativeInteger".equals(attributeType)) {
returnObject = new NonNegativeInteger(attribValue);
} else if ("nonPositiveInteger".equals(attributeType)) {
returnObject = new NonPositiveInteger(attribValue);
} else {
throw new ADBException("Unknown type ==> " + attributeType);
}