virtual std::unique_ptr< writer > newWriter(const std::string &path, bool mightAppend, size_t sourceSize, size_t readBlockSize, copyRequest::stateType &state, bool noWrite, std::unique_ptr< ioHandle::attrDataType > attrData, std::unique_ptr< acl::list > aclData)=0
virtual std::unique_ptr< writer > newTmpWriter(std::string &path, size_t sourceSize, bool noWrite, std::unique_ptr< ioHandle::attrDataType > attrData, std::unique_ptr< acl::list > aclData)