public PropertyExistenceTracker(NativeStorePropertyDefinition trackedProperty) : base(trackedProperty.Name + "_Tracker", trackedProperty.Type, PropertyFlags.None, new PropertyDefinitionConstraint[0], new PropertyDependency[]
{
new PropertyDependency(InternalSchema.PropertyExistenceTracker, PropertyDependencyType.NeedForRead)
})
{
this.bitFlag = PropertyExistenceTracker.GetBitFlag(trackedProperty);
if (this.bitFlag == -1L)
{
throw new ArgumentException(string.Format("{0} not in Tracked property list", trackedProperty));
}
}
private void TrackProperty(StorePropertyDefinition propertyDefinition, bool isAdded)
{
if (!this.trackingPropertyExistence)
{
return;
}
long bitFlag = PropertyExistenceTracker.GetBitFlag(propertyDefinition);
if (bitFlag == -1L)
{
return;
}
if (this.propertyExistenceBitMap == null)
{
object obj = base.TryGetProperty(InternalSchema.PropertyExistenceTracker);
if (obj is long)
{
this.propertyExistenceBitMap = new long?((long)obj);
}
else
{
this.propertyExistenceBitMap = new long?(0L);
}
}
if (isAdded)
{
this.propertyExistenceBitMap = new long?(this.propertyExistenceBitMap.Value | bitFlag);
}
else
{
this.propertyExistenceBitMap &= ~bitFlag;
}
if (this.propertyExistenceBitMap.Value != 0L)
{
((IDirectPropertyBag)this.memoryPropertyBag).SetValue(InternalSchema.PropertyExistenceTracker, this.propertyExistenceBitMap.Value);
return;
}
((IDirectPropertyBag)this.memoryPropertyBag).Delete(InternalSchema.PropertyExistenceTracker);
}