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Selectors and GUIDs

TODO — this page requires input from the DAQS product team on how selectors work in the rule configuration.

GUIDs in rules

GUIDs appear in DAQS rules in two contexts:

1. Shared parameter access in filters

Shared parameters in the DAQS JSON are stored under a key derived from their GUID:

"values": {
  "p_8fe8f5ce-4979-4679-b5e0-ccfb362b9059": {
    "value": "EI 30",
    "hasValue": true
  }
}

In the filter, you access this using $lookup:

$lookup(values, "p_8fe8f5ce-4979-4679-b5e0-ccfb362b9059")

Or with the helper pattern:

$paramGuids := {
  "FireRating": "8fe8f5ce-4979-4679-b5e0-ccfb362b9059"
};

2. Finding a GUID by parameter name

To look up the GUID for a shared parameter by name:

$[type = "Parameter" and values.name = "NLRS_C_brandwerendheid"].values.guid

Always use GUIDs to access shared parameters — not names. Names can be changed or duplicated. The GUID is permanent.

See Identity vs Value.