/// <summary>
/// Creates a copy of a TheThingStore with a selectable subset of properties.
/// </summary>
/// <param name="thingWithMeta">An optional thing with meta information like Sensor or Config property information.</param>
/// <param name="baseItem">Optional TheThingStore with additional properties to copy into the clone.</param>
/// <param name="ResetBase">Creates a new cdeMID and timestamp. Otherwise the item will have the same cdeMID and timestamp as the baseItem. </param>
/// <param name="propFilter">Specification of which properties to copy. If null, all properties will be copied.</param>
/// <param name="forExternalConsumption">Set a flag that is used by the Historian mechanism internally.</param>
/// <param name="bUpdated">Returns true if an of the baseItem properties overwrote properties in the TheThingStore.</param>
/// <returns>The copy of the baseItem TheThingStore</returns>
internal TheThingStore CloneForThingSnapshot(TheThing thingWithMeta, TheThingStore baseItem, bool ResetBase, TheHistoryParameters propFilter, bool forExternalConsumption, out bool bUpdated)
{
TheThingStore tThing = new TheThingStore();
if (ResetBase)
{
tThing.cdeCTIM = DateTimeOffset.Now;
tThing.cdeMID = Guid.NewGuid();
}
else
{
tThing.cdeCTIM = cdeCTIM;
tThing.cdeMID = cdeMID;
}
tThing.cdeAVA = cdeAVA;
tThing.cdeA = cdeA;
if (baseItem != null && baseItem.cdeEXP != 0 && cdeEXP == 0)
{
tThing.cdeEXP = baseItem.cdeEXP;
}
else
{
tThing.cdeEXP = cdeEXP;
}
tThing.cdePRI = cdePRI;
tThing.cdeF = cdeF;
tThing.cdeM = cdeM;
tThing.cdeN = cdeN;
tThing.cdeO = cdeO;
tThing.cdeSEQ = cdeSEQ;
IEnumerable <string> propertiesToInclude = null;
if (propFilter?.Properties != null || propFilter.FilterToSensorProperties == true || propFilter.FilterToConfigProperties == true)
{
propertiesToInclude = thingWithMeta?.GetMatchingProperties(propFilter);
if (propertiesToInclude != null)
{
if (propFilter.ComputeMax)
{
propertiesToInclude = propertiesToInclude.Concat(propertiesToInclude.Select(propName => $"[{propName}].Max"));
}
if (propFilter.ComputeAvg)
{
propertiesToInclude = propertiesToInclude.Concat(propertiesToInclude.Select(propName => $"[{propName}].Avg"));
}
if (propFilter.ComputeMin)
{
propertiesToInclude = propertiesToInclude.Concat(propertiesToInclude.Select(propName => $"[{propName}].Min"));
}
if (propFilter.ComputeN)
{
propertiesToInclude = propertiesToInclude.Concat(propertiesToInclude.Select(propName => $"[{propName}].N"));
}
}
}
if (propertiesToInclude == null)
{
propertiesToInclude = baseItem != null?baseItem.PB.Keys.Union(PB.Keys) : PB.Keys;
if (propFilter?.PropertiesToExclude?.Any() == true)
{
var tempList = new List <string>(propertiesToInclude);
foreach (var prop in propFilter.PropertiesToExclude)
{
tempList.Remove(prop);
}
propertiesToInclude = tempList;
}
}
bUpdated = false;
foreach (string key in propertiesToInclude)
{
if (PB.ContainsKey(key))
{
bUpdated = true;
tThing.PB[key] = PB[key];
}
else if (baseItem != null && baseItem.PB.ContainsKey(key))
{
try
{
tThing.PB[key] = baseItem.PB[key];
}
catch (Exception)
{
//ignored
}
}
}
if (forExternalConsumption)
{
tThing.IsFullSnapshot = false;
tThing.IsInitialValue = false;
}
else
{
if (IsFullSnapshot || (baseItem != null && baseItem.IsFullSnapshot))
{
tThing.IsFullSnapshot = true;
}
}
if (!bUpdated && baseItem != null)
{
return(null); // all properties came from the baseItem, which means the thing update didn't have any matching property changes
}
return(tThing);
}
/// <summary>
/// Clones all TheThing properties and returns a TheThingStore class
/// </summary>
/// <param name="iThing">The Thing to clone.</param>
/// <param name="ResetBase">Use current time instead of Thing timestamp</param>
/// <param name="bUsePropertyTimestamp">Use latest timestamp of any of the properties</param>
/// <param name="cloneProperties">Indiciates if current properties and their of the iThing should be added to TheThingStore.PB of only an empty PB should be returned.</param>
/// <param name="cloneFilter">When cloning, indicates which properties to include. If null, all properties of the thing are included.</param>
/// <returns></returns>
internal static TheThingStore CloneFromTheThingInternal(ICDEThing iThing, bool ResetBase, bool bUsePropertyTimestamp, bool cloneProperties, ThePropertyFilter cloneFilter)
{
TheThingStore tThing = new TheThingStore();
if (iThing == null)
{
return(tThing);
}
TheThing pThing = iThing.GetBaseThing();
if (pThing != null)
{
if (ResetBase)
{
tThing.cdeCTIM = !bUsePropertyTimestamp ? DateTimeOffset.Now : DateTimeOffset.MinValue;
tThing.cdeMID = Guid.NewGuid();
}
else
{
tThing.cdeCTIM = pThing.cdeCTIM;
tThing.cdeMID = pThing.cdeMID;
}
tThing.cdeAVA = pThing.cdeAVA;
tThing.cdeA = pThing.cdeA;
tThing.cdeEXP = pThing.cdeEXP;
tThing.cdePRI = pThing.cdePRI;
tThing.cdeF = pThing.cdeF;
tThing.cdeM = pThing.cdeM;
tThing.cdeN = pThing.cdeN;
//tThing.cdeO = pThing.cdeO;
tThing.cdeO = pThing.cdeMID; //CODE-REVIEW: Since tThing is a "TheThingStore" and is "owned" by the pThing, the cdeO (Owner) property should be updated. Does this break anything for TDS01 etc???
//tThing.OwnerThingMID = pThing.cdeMID; //Alternative we need to add a OwnerThingMID to TheThingStore to be able to segregate retrieval of TheThingStore records from the SQL Server
tThing.cdeSEQ = pThing.cdeSEQ;
if (cloneProperties)
{
var propertiesToInclude = pThing.GetMatchingProperties(cloneFilter);
int propsIncludeCount = 0;
foreach (string key in propertiesToInclude)
{
try
{
cdeP prop;
if ((prop = pThing.GetProperty(key)) != null) // .MyPropertyBag.TryGetValue(key, out prop))
{
//if (prop.CheckAndResetTouchedSinceLastHistorySnapshot() || cloneProperties) // Have to always check and reset, so do this first
{
tThing.PB[key] = prop.Value;
if (bUsePropertyTimestamp)
{
if (prop.cdeCTIM > tThing.cdeCTIM)
{
if (tThing.cdeCTIM.Ticks != 0 && tThing.PB.Count > 1)
{
TheBaseAssets.MySYSLOG.WriteToLog(1, TSM.L(eDEBUG_LEVELS.VERBOSE) ? null : new TSM(eEngineName.ThingService, "Historian timestamp changed by property when cloning for snapshot", eMsgLevel.l6_Debug, $"{prop.Name}: {tThing.cdeCTIM:O} changed to {prop.cdeCTIM:O}. Possible victims: {tThing.PB.Aggregate("", (s, kv) => kv.Key != prop.Name ? $"{s}{kv.Key}," : s)}"));
}
tThing.cdeCTIM = prop.cdeCTIM;
}
else if (prop.cdeCTIM != tThing.cdeCTIM)
{
TheBaseAssets.MySYSLOG.WriteToLog(1, TSM.L(eDEBUG_LEVELS.VERBOSE) ? null : new TSM(eEngineName.ThingService, "Historian timestamp on property not applied when cloning for snapshot", eMsgLevel.l6_Debug, $"{prop.Name}: {prop.cdeCTIM:O} changed to {tThing.cdeCTIM:O}. Possible offenders: {tThing.PB.Aggregate("", (s, kv) => kv.Key != prop.Name ? $"{s}{kv.Key}," : s)}"));
}
}
}
}
}
catch (Exception)
{
//ignored
}
propsIncludeCount++;
}
if (tThing.cdeCTIM == DateTimeOffset.MinValue)
{
tThing.cdeCTIM = pThing.cdeCTIM;
}
// We have all properties that are available in the thing as of this time and that are requested: this snapshot can and will now be used as the basis to report unchanged properties
tThing.IsFullSnapshot = true;
}
}
return(tThing);
}