Performance improvements #57
Description
- add
bool WireFormat::SkipString(CodedInputStream*)(used below); Client::Impl::ReceiveData()usesSkipStringto skip over an unused string in the input, instead of creating astd::string, reading into it, then discarding it;Client::Impl::ReadBlock(...)reuses thestd::stringvariablesnameandtypefor all columns, instead of allocating these twostd::strings for each column;Client::Impl::Insert(...)builds the fields_section more efficiently, directly from theblock, without creating and copying from theblockinto astd::vector<std::string>, and then writing to std::stringstream from it.