private List expandColumn()

in zetasql-toolkit-core/src/main/java/com/google/zetasql/toolkit/tools/lineage/ParentColumnFinder.java [168:182]

• 12 lines of code
• 2 McCabe index (conditional complexity)

  private List<ResolvedColumn> expandColumn(ResolvedColumn column) {
    ArrayList<ResolvedColumn> result = new ArrayList<>();
    result.add(column);

    Type type = column.getType();

    if (type.isStruct()) {
      type.asStruct().getFieldList().stream()
          .map(field -> buildColumnSubfield(column, field.getName(), field.getType()))
          .flatMap(subColumn -> expandColumn(subColumn).stream())
          .forEachOrdered(result::add);
    }

    return result;
  }