/**
* Call "read" to lookup an entity record by it's unique identifier.
* If not found then return null or throw an UnknownRecException based
* on checked.
* NOTE: Was final
*/
public HDict readById(HRef id, bool bChecked)
{
HDict rec = onReadById(id);
if (rec != null)
{
return(rec);
}
if (bChecked)
{
throw new Exception("rec not found for: " + id.ToString());
}
return(null);
}
public static HaystackReference Map(HRef value)
{
return(value.Source);
}
// Subclass hook for readById, return null if not found. protected abstract HDict onReadById(HRef id);
//////////////////////////////////////////////////////////////////////////
// Read by id
//////////////////////////////////////////////////////////////////////////
// Convenience for "readById(id, true)" NOTE: Was final
public HDict readById(HRef id)
{
return(readById(id, true));
}
/** * Write a set of history time-series data to the given point record. * The record must already be defined and must be properly tagged as * a historized point. The timestamp timezone must exactly match the * point's configured "tz" tag. If duplicate or out-of-order items are * inserted then they must be gracefully merged. */ public abstract void hisWrite(HRef id, HHisItem[] items);
//////////////////////////////////////////////////////////////////////////
// Historian
//////////////////////////////////////////////////////////////////////////
/**
* Read history time-series data for given record and time range. The
* items returned are exclusive of start time and inclusive of end time.
* Raise exception if id does not map to a record with the required tags
* "his" or "tz". The range may be either a String or a HDateTimeRange.
* If HTimeDateRange is passed then must match the timezone configured on
* the history record. Otherwise if a String is passed, it is resolved
* relative to the history record's timezone.
*/
public abstract HGrid hisRead(HRef id, object range);