Schemas

Point identity - the raw source topic/label. Becomes urn:point:{point} in the graph; the same string used consistently by a source is what makes repeated readings resolve to the same point.

The reading value - whatever type the source produced.

Unix epoch seconds. Defaults to the ingest server's current time if omitted.

Optional sample quality (#183). A flag name (fault, overridden, out_of_service, out_of_range, spike, unit_suspect; ok or omitted means good), or BACnet's own status as {"status_flags": [...], "reliability": "..."}. The value is stored as sent either way; an unrecognised quality is treated as good.

Unix epoch seconds.

Whatever type was originally stored.

Present only on a flagged sample (#183). The value is kept as received; fault rules and Cx checks skip flagged samples.

The expression as received.

Just the filter part of the expression.

Present when the expression had a hisRollup; every series is then numeric and bucket-stamped.

The per-point raw-sample cap that applied.

URIs the filter matched (before equipment-to-point expansion), first 200.

Only ever non-empty when matchedCount is 0: filter names that are almost a Brick class or tag word (Air_Handeling_Unit, temperture), with the nearest real ones. Never an error - the name may be a valid Haystack marker or PROJ class the vendored Brick can't know about.

The point's graph URI.

The same identity GET /history?point= takes (URI minus the urn:point: prefix).

Display name - the point's dis tag, else the last segment of its source topic.

Haystack kind - Number, Bool, or Str; from the point's kind tag, else inferred from the data. Always Number for a rollup.

Marker tags on the point.

URI of the equipment this point brick:isPointOf, if any.

True if the point had more raw samples in the span than limit allowed.

Same point identity POST /ingest uses - resolves to the same urn:point:{point} entity.

Haystack tag name -> value. true for marker tags, any JSON scalar/object/array for valued tags.

Unix epoch seconds. Accepted for envelope symmetry with Reading; not currently used by classification.

The point's full graph URI (urn:point:{point}).

See mapping.classify_point: direct (a rule's tags are a full subset of this point's tags), fallback (partial overlap, a PROJ subclass of the closest rule), or miss (TD:UnmappedPoint, no rule shares any tag).

The matched (or nearest-ancestor) Brick class name, or null on a miss.

Full equip URI (e.g. urn:equip:fbf/ahu-3 or urn:equip:haystack:AHU-1), not a bare topic/ref.

Full equip URI - the other identity for the same physical equipment.

Full URI of the point or sub-component being placed.

Full URI of the equipment or sub-component it belongs to.

Human-readable explanation of what was wrong with the request.