'Has a Value' filter sometimes displays empty copyright attributes

[johnmhoran]

When I select the Has a Value filter for one of the copyright attributes in the Table View, sometimes (not yet sure how often or if always) a row is displayed with no value for the filtered attribute. Two examples I've seen:

• select Has a Value for Copyright Authors -- row is displayed where that column is empty but a value is present in Copyright Statements, Copyright Holders and the start and end line columns.
• select Has a Value for Copyright Statements -- row is displayed where that column is empty but a value is present in Copyright Authors and the start and end line columns (Copyright Holders is also empty).

Seems like the Has a Value filter for copyright attributes might be examining the entire set of nested key-value pairs inside the scan's copyrights value, e.g.,

      "copyrights": [
        {
          "statements": [],
          "holders": [],
          "authors": [
            "Noah Friedman <friedman@prep.ai.mit.edu>"
          ],
          "start_line": 2,
          "end_line": 5
        }
      ],

(These observations are based on scans of e2fsprogs-1.44.2 created with ScanCode v2.9.2.)

[johnmhoran]

This behavior also seems to affect the code I'm developing for issue #235 -- adding a Has no Value filter option. For example,

• select Has no Value for Copyright Statements -- Table View does not display row where that column is empty but a value is present in Copyright Authors and the start and end line columns.

(BTW, the path for this example is e2fsprogs-1.44.2/config/mkinstalldirs.)

[steven-esser]

#299 merged, closing this.