From OpenSCADAWiki
Protected methods:
- virtual TVariant getValProc( int64_t *tm, bool up_ord ); — Requesting of one value from the archive for the time tm and fine-tuning to the upper value in the sampling grid up_ord.
- virtual void getValsProc( TValBuf &buf, int64_t beg, int64_t end ); — Requesting of a value group to buf from the archive and for the time range [beg...end].
- virtual void setValsProc( TValBuf &buf, int64_t beg, int64_t end, bool toAccum ); — Setting of the value group buf to the archive, for the time range [beg...end] and through the accumulation toAccum.