public static FSList createFSList()

in uimafit-core/src/main/java/org/apache/uima/fit/util/FSCollectionFactory.java [615:645]

• 26 lines of code
• 5 McCabe index (conditional complexity)

  public static <T extends TOP> FSList<T> createFSList(CAS aCas, Collection<T> aValues) {
    if (aValues == null) {
      return null;
    }

    TypeSystem ts = aCas.getTypeSystem();

    if (aValues.size() == 0) {
      return aCas.emptyFSList();
    }

    Type nonEmptyType = ts.getType(CAS.TYPE_NAME_NON_EMPTY_FS_LIST);
    Feature headFeature = nonEmptyType.getFeatureByBaseName(CAS.FEATURE_BASE_NAME_HEAD);
    Feature tailFeature = nonEmptyType.getFeatureByBaseName(CAS.FEATURE_BASE_NAME_TAIL);

    FeatureStructure head = aCas.createFS(nonEmptyType);
    FeatureStructure list = head;
    Iterator<? extends FeatureStructure> i = aValues.iterator();
    while (i.hasNext()) {
      head.setFeatureValue(headFeature, i.next());
      if (i.hasNext()) {
        FeatureStructure tail = aCas.createFS(nonEmptyType);
        head.setFeatureValue(tailFeature, tail);
        head = tail;
      } else {
        head.setFeatureValue(tailFeature, aCas.emptyFSList());
      }
    }

    return (FSList<T>) list;
  }