Count node

​

Description

A Count node counts the number of items referenced by the specified Link attribute, e.g. the Members attribute of a Teams item.

Usage

The Count node is an input, so it can be added to the segments of comparison nodes and functions.

It can be:

• added to these comparison nodes:

  • ​ Equals
  • ​ Greater than
  • ​ Less than
  • ​ Not Equals

• compared against these nodes:

  • ​ Attribute (of Number type)
  • ​ Count
  • ​ Length
  • ​ Value From Item Attribute (of Number type)
  • all Arithmetic nodes

Configuration

The node defaults to the first Link attribute on the design/interface being queried.

• ​ Open in Pathfinder - use the Pathfinder to change the selected attribute.

• ​ Delete - remove the node from the segment.

Example

Fetch all street lights with more than 3 defects

In full detail:

Fetch items of the Street Lights design where the count of their Defects Link attribute is greater than 3

See JSON code

This code may reference designs, interfaces, attributes or items that don't exist in your Alloy database.

{
  "type": "Query",
  "properties": {
    "collectionCode": "Live",
    "dodiCode": "designs_streetLights"
  },
  "children": [
    {
      "type": "GreaterThan",
      "children": [
        {
          "type": "Count",
          "properties": {
            "groupBy": "attributes_defectsAssignableDefects"
          }
        },
        {
          "type": "Number",
          "properties": {
            "value": [3]
          }
        }
      ]
    }
  ]
}