002_0006 - AvoidTooManyVirtualAttributes

Too many Microflow attributes (virtual attributes) inside of an entity

Optimize the number of virtual attributes inside of an entity. Reduce to 10 or less.

Metadata

authors:
- Xiwen Cheng <x@cinaq.com>
category: Performance
input: '*/DomainModels$DomainModel.yaml'
rulename: AvoidTooManyVirtualAttributes
rulenumber: '002_0006'
scope: package
severity: MEDIUM

Description

Too many Microflow attributes (virtual attributes) inside of an entity will cause performance issues.

Remediation

Optimize the number of virtual attributes inside of an entity. Reduce to 10 or less.

Test cases

package app.mendix.domain_model.avoid_too_many_virtual_attributes

import rego.v1


# Test data


attr_0 := {
          "$Type": "DomainModels$Attribute",
          "Name": "VA_age",
          "Value": {
            "$Type": "DomainModels$CalculatedValue"
          }
}


twenty := numbers.range(1, 20)
attr_20 = [ 
    { "Name": attr_0.Name, "Value": attr_0.Value }  | n := twenty[_]
]

positive := {
  "Entities": [
    {
      "$Type": "DomainModels$EntityImpl",
      "Attributes": [
        {
          "$Type": "DomainModels$Attribute",
          "Name": "VA_age",
          "Value": {
            "$Type": "DomainModels$CalculatedValue"
          }
        },
        {
          "$Type": "DomainModels$Attribute",
          "Name": "Year",
          "Value": {
            "$Type": "DomainModels$StoredValue"
          }
        }
      ],
      "Name": "Bike"
    }
  ]
}

negative := {
  "Entities": [
    {
      "$Type": "DomainModels$EntityImpl",
      "Attributes": attr_20,
      "Name": "Bike"
    }
  ]
}

# Test cases

test_positive if {
    allow with input as positive
}

test_negative if {
    not allow with input as negative
}