protected int compareMaps()

in lang/java/avro/src/main/java/org/apache/avro/generic/GenericData.java [1205:1270]
60 lines of code
24 McCabe index (conditional complexity)

  protected int compareMaps(final Map<?, ?> m1, final Map<?, ?> m2) {
    if (m1 == m2) {
      return 0;
    }

    if (m1.isEmpty() && m2.isEmpty()) {
      return 0;
    }

    if (m1.size() != m2.size()) {
      return 1;
    }

    /**
     * Peek at keys, assuming they're all the same type within a Map
     */
    final Object key1 = m1.keySet().iterator().next();
    final Object key2 = m2.keySet().iterator().next();
    boolean utf8ToString = false;
    boolean stringToUtf8 = false;

    if (key1 instanceof Utf8 && key2 instanceof String) {
      utf8ToString = true;
    } else if (key1 instanceof String && key2 instanceof Utf8) {
      stringToUtf8 = true;
    }

    try {
      for (Map.Entry e : m1.entrySet()) {
        final Object key = e.getKey();
        Object lookupKey = key;
        if (utf8ToString) {
          lookupKey = key.toString();
        } else if (stringToUtf8) {
          lookupKey = new Utf8((String) lookupKey);
        }
        final Object value = e.getValue();
        if (value == null) {
          if (!(m2.get(lookupKey) == null && m2.containsKey(lookupKey))) {
            return 1;
          }
        } else {
          final Object value2 = m2.get(lookupKey);
          if (value instanceof Utf8 && value2 instanceof String) {
            if (!value.toString().equals(value2)) {
              return 1;
            }
          } else if (value instanceof String && value2 instanceof Utf8) {
            if (!new Utf8((String) value).equals(value2)) {
              return 1;
            }
          } else {
            if (!value.equals(value2)) {
              return 1;
            }
          }
        }
      }
    } catch (ClassCastException unused) {
      return 1;
    } catch (NullPointerException unused) {
      return 1;
    }

    return 0;
  }