protected void toString()

in lang/java/avro/src/main/java/org/apache/avro/generic/GenericData.java [685:765]
81 lines of code
21 McCabe index (conditional complexity)

  protected void toString(Object datum, StringBuilder buffer, IdentityHashMap<Object, Object> seenObjects) {
    if (isRecord(datum)) {
      if (seenObjects.containsKey(datum)) {
        buffer.append(TOSTRING_CIRCULAR_REFERENCE_ERROR_TEXT);
        return;
      }
      seenObjects.put(datum, datum);
      buffer.append("{");
      int count = 0;
      Schema schema = getRecordSchema(datum);
      for (Field f : schema.getFields()) {
        toString(f.name(), buffer, seenObjects);
        buffer.append(": ");
        toString(getField(datum, f.name(), f.pos()), buffer, seenObjects);
        if (++count < schema.getFields().size())
          buffer.append(", ");
      }
      buffer.append("}");
      seenObjects.remove(datum);
    } else if (isArray(datum)) {
      if (seenObjects.containsKey(datum)) {
        buffer.append(TOSTRING_CIRCULAR_REFERENCE_ERROR_TEXT);
        return;
      }
      seenObjects.put(datum, datum);
      Collection<?> array = getArrayAsCollection(datum);
      buffer.append("[");
      long last = array.size() - 1;
      int i = 0;
      for (Object element : array) {
        toString(element, buffer, seenObjects);
        if (i++ < last)
          buffer.append(", ");
      }
      buffer.append("]");
      seenObjects.remove(datum);
    } else if (isMap(datum)) {
      if (seenObjects.containsKey(datum)) {
        buffer.append(TOSTRING_CIRCULAR_REFERENCE_ERROR_TEXT);
        return;
      }
      seenObjects.put(datum, datum);
      buffer.append("{");
      int count = 0;
      @SuppressWarnings(value = "unchecked")
      Map<Object, Object> map = (Map<Object, Object>) datum;
      for (Map.Entry<Object, Object> entry : map.entrySet()) {
        buffer.append("\"");
        writeEscapedString(String.valueOf(entry.getKey()), buffer);
        buffer.append("\": ");
        toString(entry.getValue(), buffer, seenObjects);
        if (++count < map.size())
          buffer.append(", ");
      }
      buffer.append("}");
      seenObjects.remove(datum);
    } else if (isString(datum) || isEnum(datum)) {
      buffer.append("\"");
      writeEscapedString(datum.toString(), buffer);
      buffer.append("\"");
    } else if (isBytes(datum)) {
      buffer.append("\"");
      ByteBuffer bytes = ((ByteBuffer) datum).duplicate();
      writeEscapedString(StandardCharsets.ISO_8859_1.decode(bytes), buffer);
      buffer.append("\"");
    } else if (isNanOrInfinity(datum) || isTemporal(datum) || datum instanceof UUID) {
      buffer.append("\"");
      buffer.append(datum);
      buffer.append("\"");
    } else if (datum instanceof GenericData) {
      if (seenObjects.containsKey(datum)) {
        buffer.append(TOSTRING_CIRCULAR_REFERENCE_ERROR_TEXT);
        return;
      }
      seenObjects.put(datum, datum);
      toString(datum, buffer, seenObjects);
      seenObjects.remove(datum);
    } else {
      buffer.append(datum);
    }
  }