Method ConvertOffsetsToPointers

be/src/runtime/tuple.cc:194–223

}

void Tuple::ConvertOffsetsToPointers(const TupleDescriptor& desc, uint8_t* tuple_data) {
  vector<SlotDescriptor*>::const_iterator slot = desc.string_slots().begin();
  for (; slot != desc.string_slots().end(); ++slot) {
    DCHECK((*slot)->type().IsVarLenStringType());
    if (IsNull((*slot)->null_indicator_offset())) continue;

    StringValue* string_val = GetStringSlot((*slot)->tuple_offset());
    if (string_val->IsSmall()) continue;
    int offset = reinterpret_cast<intptr_t>(string_val->Ptr());
    string_val->SetPtr(reinterpret_cast<char*>(tuple_data + offset));
  }

  slot = desc.collection_slots().begin();
  for (; slot != desc.collection_slots().end(); ++slot) {
    DCHECK((*slot)->type().IsCollectionType());
    if (IsNull((*slot)->null_indicator_offset())) continue;

    CollectionValue* coll_value = GetCollectionSlot((*slot)->tuple_offset());
    int offset = reinterpret_cast<intptr_t>(coll_value->ptr);
    coll_value->ptr = tuple_data + offset;

    uint8_t* coll_data = coll_value->ptr;
    const TupleDescriptor& item_desc = *(*slot)->children_tuple_descriptor();
    for (int i = 0; i < coll_value->num_tuples; ++i) {
      reinterpret_cast<Tuple*>(coll_data)->ConvertOffsetsToPointers(
          item_desc, tuple_data);
      coll_data += item_desc.byte_size();
    }
  }
}

void Tuple::SetNullIndicators(NullIndicatorOffset offset, int64_t num_tuples,
    int64_t tuple_stride, uint8_t* tuple_mem) {