private void add()

in spectator-reg-atlas/src/main/java/com/netflix/spectator/atlas/impl/QueryIndex.java [200:261]
53 lines of code
13 McCabe index (conditional complexity)

  private void add(List<Query.KeyQuery> queries, int i, T value) {
    if (i < queries.size()) {
      Query.KeyQuery kq = queries.get(i);

      // Check for additional queries based on the same key and combine into a
      // composite if needed
      Query.CompositeKeyQuery composite = null;
      int j = i + 1;
      while (j < queries.size()) {
        Query.KeyQuery q = queries.get(j);
        if (kq.key().equals(q.key())) {
          if (composite == null) {
            composite = new Query.CompositeKeyQuery(kq);
            kq = composite;
          }
          composite.add(q);
          ++j;
        } else {
          break;
        }
      }

      if (key == null) {
        key = kq.key();
      }

      if (key.equals(kq.key())) {
        if (kq instanceof Query.Equal) {
          String v = ((Query.Equal) kq).value();
          QueryIndex<T> idx = equalChecks.computeIfAbsent(v, id -> QueryIndex.empty(cacheSupplier));
          idx.add(queries, j, value);
        } else if (kq instanceof Query.Has) {
          if (hasKeyIdx == null) {
            hasKeyIdx = QueryIndex.empty(cacheSupplier);
          }
          hasKeyIdx.add(queries, j, value);
        } else {
          QueryIndex<T> idx = otherChecks.computeIfAbsent(kq, id -> QueryIndex.empty(cacheSupplier));
          idx.add(queries, j, value);
          otherChecksTree.put(kq);
          otherChecksCache.clear();

          // Not queries should match if the key is missing from the id, so they need to
          // be included in the other keys sub-tree as well. Check this by seeing if it will
          // match an empty map as there could be a variety of inverted types.
          if (kq.matches(Collections.emptyMap())) {
            if (missingKeysIdx == null) {
              missingKeysIdx = QueryIndex.empty(cacheSupplier);
            }
            missingKeysIdx.add(queries, j, value);
          }
        }
      } else {
        if (otherKeysIdx == null) {
          otherKeysIdx = QueryIndex.empty(cacheSupplier);
        }
        otherKeysIdx.add(queries, i, value);
      }
    } else {
      matches.add(value);
    }
  }