Function isKeyReferenced

Rapfi/database/dbclient.cpp:150–170

/// Check if this key is referenced by any other key.
template <typename IsDeletedParentKeyPredicate>
bool isKeyReferenced(DBStorage &storage, const DBKey &key, IsDeletedParentKeyPredicate pred)
{
    bool result = false;

    iterateParentKeys(storage,
                      key,
                      [&](const DBKey &parentKey, const StonePos &, TransformType) -> bool {
                          if (pred(parentKey))
                              return false;

                          DBRecord record;
                          if (storage.get(parentKey, record, RECORD_MASK_NONE)) {
                              result = true;
                              return true;  // terminate iteration now
                          }

                          return false;
                      });

    return result;
}

/// Delete all children of a board position from the database storage.
/// @return The number of records deleted.