protected Accessor createAccessor()

in core/src/main/java/org/apache/calcite/avatica/util/AbstractCursor.java [86:235]
150 lines of code
59 McCabe index (conditional complexity)

  protected Accessor createAccessor(ColumnMetaData columnMetaData,
      Getter getter, Calendar localCalendar, ArrayImpl.Factory factory) {
    switch (columnMetaData.type.rep) {
    case NUMBER:
      switch (columnMetaData.type.id) {
      case Types.TINYINT:
      case Types.SMALLINT:
      case Types.INTEGER:
      case Types.BIGINT:
      case Types.REAL:
      case Types.FLOAT:
      case Types.DOUBLE:
      case Types.NUMERIC:
      case Types.DECIMAL:
        return new NumberAccessor(getter, columnMetaData.scale);
      }
    }
    switch (columnMetaData.type.id) {
    case Types.TINYINT:
      return new ByteAccessor(getter);
    case Types.SMALLINT:
      return new ShortAccessor(getter);
    case Types.INTEGER:
      return new IntAccessor(getter);
    case Types.BIGINT:
      return new LongAccessor(getter);
    case Types.BOOLEAN:
    case Types.BIT:
      return new BooleanAccessor(getter);
    case Types.REAL:
      return new FloatAccessor(getter);
    case Types.FLOAT:
    case Types.DOUBLE:
      return new DoubleAccessor(getter);
    case Types.DECIMAL:
      return new NumberAccessor(getter, columnMetaData.scale);
    case Types.CHAR:
      switch (columnMetaData.type.rep) {
      case PRIMITIVE_CHAR:
      case CHARACTER:
        return new StringFromCharAccessor(getter, columnMetaData.displaySize);
      default:
        return new FixedStringAccessor(getter, columnMetaData.displaySize);
      }
    case Types.VARCHAR:
    case Types.NVARCHAR:
      return new StringAccessor(getter);
    case Types.BINARY:
    case Types.VARBINARY:
      switch (columnMetaData.type.rep) {
      case STRING:
        return new BinaryFromStringAccessor(getter);
      default:
        return new BinaryAccessor(getter);
      }
    case Types.DATE:
      switch (columnMetaData.type.rep) {
      case PRIMITIVE_INT:
      case INTEGER:
      case NUMBER:
        return new DateFromNumberAccessor(getter, localCalendar);
      case JAVA_SQL_DATE:
        return new DateAccessor(getter, localCalendar);
      default:
        throw new AssertionError("bad " + columnMetaData.type.rep);
      }
    case Types.TIME:
      switch (columnMetaData.type.rep) {
      case PRIMITIVE_INT:
      case INTEGER:
      case NUMBER:
        return new TimeFromNumberAccessor(getter, localCalendar, columnMetaData.precision);
      case JAVA_SQL_TIME:
        return new TimeAccessor(getter, localCalendar);
      default:
        throw new AssertionError("bad " + columnMetaData.type.rep);
      }
    case Types.TIMESTAMP:
      switch (columnMetaData.type.rep) {
      case PRIMITIVE_LONG:
      case LONG:
      case NUMBER:
        return new TimestampFromNumberAccessor(getter, localCalendar, columnMetaData.precision);
      case JAVA_SQL_TIMESTAMP:
        return new TimestampAccessor(getter, localCalendar, columnMetaData.precision);
      case JAVA_UTIL_DATE:
        return new TimestampFromUtilDateAccessor(getter, localCalendar, columnMetaData.precision);
      default:
        throw new AssertionError("bad " + columnMetaData.type.rep);
      }
    case Types.TIME_WITH_TIMEZONE:
      switch (columnMetaData.type.rep) {
      case STRING:
        return new StringAccessor(getter);
      default:
        throw new AssertionError("bad " + columnMetaData.type.rep);
      }
    case Types.TIMESTAMP_WITH_TIMEZONE:
      switch (columnMetaData.type.rep) {
      case STRING:
        return new StringAccessor(getter);
      default:
        throw new AssertionError("bad " + columnMetaData.type.rep);
      }
    case Types.ARRAY:
      final ColumnMetaData.ArrayType arrayType =
          (ColumnMetaData.ArrayType) columnMetaData.type;
      final SlotGetter componentGetter = new SlotGetter();
      final Accessor componentAccessor =
          createAccessor(ColumnMetaData.dummy(arrayType.getComponent(), true),
              componentGetter, localCalendar, factory);
      return new ArrayAccessor(getter, arrayType.getComponent(), componentAccessor,
          componentGetter, factory);
    case Types.STRUCT:
      switch (columnMetaData.type.rep) {
      case OBJECT:
        final ColumnMetaData.StructType structType =
            (ColumnMetaData.StructType) columnMetaData.type;
        List<Accessor> accessors = new ArrayList<>();
        for (ColumnMetaData column : structType.columns) {
          accessors.add(
              createAccessor(column, new StructGetter(getter, column), localCalendar, factory));
        }
        return new StructAccessor(getter, accessors);
      default:
        throw new AssertionError("bad " + columnMetaData.type.rep);
      }
    case Types.JAVA_OBJECT:
    case Types.NULL:
    case Types.OTHER: // e.g. map
      if (columnMetaData.type.getName().startsWith("INTERVAL_")) {
        int end = columnMetaData.type.getName().indexOf("(");
        if (end < 0) {
          end = columnMetaData.type.getName().length();
        }
        TimeUnitRange range =
            TimeUnitRange.valueOf(
                columnMetaData.type.getName().substring("INTERVAL_".length(), end));
        if (range.monthly()) {
          return new IntervalYearMonthAccessor(getter, range);
        } else {
          return new IntervalDayTimeAccessor(getter, range,
              columnMetaData.scale);
        }
      }
      return new ObjectAccessor(getter);
    default:
      throw new RuntimeException("unknown type " + columnMetaData.type.id);
    }
  }