"Source files should not have any duplicated blocks" for copyright comments

SonarQube Server / Community Build
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1

Hello.

We are running SonarQube Developer Edition Version 7.7 (build 23042).
We are using the same copyright block at the beginning of each Java file:

/*
 * Copyright 2019 by Example <info@example.com>
 *
 * This software contains free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License ("License") as
 * published by the Free Software Foundation  (version 3 of the License).
 * This software is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the copy of the
 * License you received along with this software for more details.

 */

package com.example;

SonarQube detects a code duplication for each file:

Source files should not have any duplicated blocks

This seems to be a false-positive. I could deactivate the rule however I still want SonarQube to find “real” code duplications. How can I handle this issue?

2

Hi,

I’m pretty sure headers and comments in general are excluded from CPD. Are you sure the duplicated blocks are referring to the header?

1 Like
4

Here is an example screenshot:

copyright
copyright.png993Ă—406 35.6 KB

5

Is this consideres a bug or desired behavior?
Should my post be moved to another category such as “Report a bug”?

6

Tobias,

The issue is being reported on the file-level, not on the code at the top of the file. If you scroll down in that file, I bet you’ll find the duplicated mode (marked by a yellow background) that is triggering this issue.

Best regards,

Colin

7

Hi Colin.

You are right. There is actually code in this file marked with the vertical bar (in gray, “Duplicated block”). Supprising to me is that the duplication points to a file in another project.
Is there a way to configure the analysis to a project scope?

Thanks! Tobias

8

You probably have “cross project duplication analysis” enabled either at the instance or project level. This can be switched off (and is also deprecated). Take a look in the General section of your project administration.

9

Thank you for the clarification. Indeed, “cross project duplication detection” is enabled.
I consider my issue as resolved now. Thanks to Julian and Colin for your support.