Function MinSerialize

be/src/udf/uda-test.cc:117–127

Serialize the state into the min string

// Serialize the state into the min string
BufferVal MinSerialize(FunctionContext* context, const BufferVal& intermediate) {
  MinState* state = reinterpret_cast<MinState*>(intermediate);
  if (state->value == NULL) return intermediate;
  // Hack to persist the intermediate state's value without leaking.
  // TODO: revisit BufferVal and design a better way to do this
  StringVal copy_buffer(context, state->len);
  memcpy(copy_buffer.ptr, state->value, state->len);
  context->Free(state->value);
  state->value = copy_buffer.ptr;
  return intermediate;
}

// Merge is the same as Update since the serialized format is the raw input format
void MinMerge(FunctionContext* context, const BufferVal& src, BufferVal* dst) {