Method setSparse

lib/NGT/ObjectRepository.h:473–473

  void setLength(size_t l) { byteSize = l; }
  void setPaddedLength(size_t l) { paddedByteSize = l; }
  void setSparse() { sparse = true; }
  void setInnerProduct() { innerProduct = true; }
  size_t getByteSize() { return byteSize; }
  size_t insert(PersistentObject *obj) { return Parent::insert(obj); }