public static ims.core.clinical.domain.objects.Medication extractMedication(
      ims.domain.ILightweightDomainFactory domainFactory,
      ims.core.vo.MedicationVo valueObject,
      HashMap domMap) {
    if (null == valueObject) {
      return null;
    }
    Integer id = valueObject.getID_Medication();
    ims.core.clinical.domain.objects.Medication domainObject = null;
    if (null == id) {
      if (domMap.get(valueObject) != null) {
        return (ims.core.clinical.domain.objects.Medication) domMap.get(valueObject);
      }
      // ims.core.vo.MedicationVo ID_Medication field is unknown
      domainObject = new ims.core.clinical.domain.objects.Medication();
      domMap.put(valueObject, domainObject);
    } else {
      String key = (valueObject.getClass().getName() + "__" + valueObject.getID_Medication());
      if (domMap.get(key) != null) {
        return (ims.core.clinical.domain.objects.Medication) domMap.get(key);
      }
      domainObject =
          (ims.core.clinical.domain.objects.Medication)
              domainFactory.getDomainObject(ims.core.clinical.domain.objects.Medication.class, id);

      // TODO: Not sure how this should be handled. Effectively it must be a staleobject exception,
      // but maybe should be handled as that further up.
      if (domainObject == null) return null;

      domMap.put(key, domainObject);
    }
    domainObject.setVersion(valueObject.getVersion_Medication());

    domainObject.setTaxonomyMap(
        ims.core.vo.domain.TaxonomyMapAssembler.extractTaxonomyMapList(
            domainFactory, valueObject.getTaxonomyMap(), domainObject.getTaxonomyMap(), domMap));
    domainObject.setKeywords(
        ims.core.vo.domain.KeywordVoAssembler.extractKeywordList(
            domainFactory, valueObject.getKeywords(), domainObject.getKeywords(), domMap));
    // This is to overcome a bug in both Sybase and Oracle which prevents them from storing an empty
    // string correctly
    // Sybase stores it as a single space, Oracle stores it as NULL. This fix will make them
    // consistent at least.
    if (valueObject.getMedicationName() != null && valueObject.getMedicationName().equals("")) {
      valueObject.setMedicationName(null);
    }
    domainObject.setMedicationName(valueObject.getMedicationName());
    domainObject.setIsActive(valueObject.getIsActive());
    domainObject.setIsControlledDrug(valueObject.getIsControlledDrug());
    // create LookupInstance from vo LookupType
    ims.domain.lookups.LookupInstance value6 = null;
    if (null != valueObject.getFrequencyDefault()) {
      value6 = domainFactory.getLookupInstance(valueObject.getFrequencyDefault().getID());
    }
    domainObject.setFrequencyDefault(value6);
    domainObject.setNoOfDaysSupplyDefault(valueObject.getNoOfDaysSupplyDefault());

    return domainObject;
  }