How can the overall SQALE rating for a service be A when all the components are B/C rated?

Question

The overall SQALE Rating for my service is A, however the components have the same as B or C. It doesn't add up. Please suggest.

_Every single one_ of your components has a B or C? _Every one of them_? — G. Ann - SonarSource Team, Feb 09 '17 at 17:26
@G.Ann-SonarSourceTeam Yes, not even one has an A rating, still the overall rating is A. — Kanishka S, Feb 10 '17 at 11:23

score 0 · Answer 1 · edited Jun 20 '20 at 09:12

0

The SQALE rating is essentially a ratio of the size of your code base versus the estimated time to fix all issues in the project.

This A / not-A discrepancy can only be caused by rounding.

Specifically, as described in the docs of the deprecated SQALE plugin

The SQALE density formula is:

Remediation cost / Development cost

Which can be restated as:

Remediation cost / (Cost to develop 1 line of code * Number of lines of code)

...

The default SQALE rating axis is: A=0-0.1, B=0.11-0.2, C=0.21-0.5, D=0.51-1

edited Jun 20 '20 at 09:12

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answered Feb 10 '17 at 13:31

G. Ann - SonarSource Team

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Thanks but what do we mean by rounding here? – Kanishka S Feb 10 '17 at 15:00

How can the overall SQALE rating for a service be A when all the components are B/C rated?

1 Answers1