Inline query for listing all pages from a namespace without any subobjects - mediawiki

Question

I need an inline query that lists all pages from a specific namespace, but without listing subobjects specified on these pages.
Restricting results to a namespace is possible like that:
{{#ask: [[ExampleNamespace:+]] }}
But it lists all subobjects, too.
Workarounds:
Specify a category on these pages (subobjects don’t inherit it) and query for the category instead:
{{#ask: [[ExampleCategory]] }}
Specify a property on these pages (and never on the subobjects) and query for the property (with a wildcard value) instead:
{{#ask: [[ExampleProperty::+]] }}
But both workarounds require editing, which I would like to avoid. Is there a better way to solve this?

Answer 1

Not sure if it's a better way, but it looks like array formats/arrays and their #arraymap and #arrayunique functions are a way to go in order to trim SMW subobject tags and make the DISTINCT operation. Unfortunately, the solution below has a query result limit issue described as well (at least out of what I understand in SMW). In general, it may look like the following, and I will appreciate if someone suggests a nicer solution:
<!-- Fetch all pages from the "Live event" namespace -->
{{#arraydefine: QUERY_RESULT
| {{#ask: [[Live event:+]]
| format = array
| link = none <!-- NOTE: array item link -->
| limit = 10000 <!-- NOTE: limit -->
}}
}}
<!-- Store the mapped result into another array -->
{{#arraydefine: MAPPED_QUERY_RESULT
| {{#arraymap: {{#arrayprint: QUERY_RESULT}}
| ,
| $O <!-- NOTE: array map iterator value -->
| {{#explode: $O <!-- NOTE: explode by hash -->
| #
| 0
}}
}}
| ,
| unique
}}
<!-- Generate links markup -->
{{#arraymap: {{#arrayprint: MAPPED_QUERY_RESULT}}
| ,
| $O
| [[$O]] <!-- NOTE: plain links -->
}}
The notes from the code above:
NOTE: array item link - Not suppressing the links causes the mapper to be more complicated (including parsing HTML <span> tags and class attributes).
NOTE: limit - This is probably the biggest issue here as the number of subobjects affects the query result. SMW by default limits the query results, and the maximum query limit cannot be overridden as far as I know. Having more rows, which count is greater than the limits is, will cause the 'Further limits' link to appear. Actually speaking, I have no idea how to work around it nicely.
NOTE: array map iterator value - {{#arraymap}} seems to replace strings in the simplest way like sed or a simple text editor app do. So $O is used as the iterator value placeholder for the formula parameter trying not to clash with other string tokens.
NOTE: explode by hash - #ask subobject results generate hashed links like PageA#_159c1f213de2fcaf165f2c9c5c56686b. Just getting rid of them. In case you need to strip wiki links, you might also play around with [[ or | (encoded like [<nowiki/>[ and <nowiki>|</nowiki> respectively)
NOTE: plain links - The generated links will have underscores instead of spaces. Unfortunately, [[{{#replace: $O | _ | <nowiki> </nowiki>}}]] didn't work for me -- the underscores are simply consumed for some reason, however this approach is also recommended at the #replace function wiki page.
Some links:
SMW array result format
SMW configuration
SMW further results
#arraymap:
#explode:
#replace:
Help:List the set of unique values for a property (pay attention at the "Limitations and issues" section)