---
name: "Analizo::Metric::AfferentConnections"
section: "3pm"
platform: "linux"
package: "analizo"
version: "1.25.5-1"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/Analizo::Metric::AfferentConnections"
---

# Analizo::Metric::AfferentConnections(3pm)

Afferent Connections per Class (ACC) metric

## NAME

Analizo::Metric::AfferentConnections - Afferent Connections per Class (ACC) metric

## DESCRIPTION

The metric calculation is based on the following article and calculates the class connectivity.

PhD Thesis: *Monitoramento de metricas de codigo-fonte em projetos de software livre* by Paulo Roberto Miranda Meirelles.

See the adaptation of the paragraph about Afferent Connections per Class in the article:

Measures the connectivity of a class. If a class `"Ci"` access a method or attribute of a class `"Cj"`, consider `"Ci"` a client of the supplier class `"Cj"`, denoting `"Ci => Cj"`.  Consider the follow function:

```
  client(Ci, Cj) = 1, if (Ci => Cj) and (Ci != Cj)
  client(Ci, Cj) = 0, otherwise.
```

So `"ACC(Cj) = (sum(client(Ci, Cj)), i = 1 to N)"`, where `"N"` is the total number of system classes. If the value of this metric is large, a change in the class has substantially more side effects, making maintenance more difficult.

## REFERENCES

- •

  Monitoramento de metricas de codigo-fonte em projetos de software livre \<https://www.teses.usp.br/teses/disponiveis/45/45134/tde-27082013-090242\>