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Maniphest T141845

prevent merging disambiguation items with items that are not disambiguations (based on P31 values)
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Description

*The Gadget-Merge shouldn't allow merging items if one of the items has P31 = Q4167410 ("Wikimedia disambiguation page") and the other doesn't.
*The same goes for Special:MergeItems / the api function

Item 1Item 2Expected result
Q4167410Q4167410merge
Q4167410not Q4167410don't merge
not Q4167410Q4167410don't merge
not Q4167410not Q4167410merge

Project discussion: https://www.wikidata.org/w/index.php?title=Wikidata:Contact_the_development_team&oldid=361189082#Playing_around

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Event Timeline

Esc3300 created this task.Aug 2 2016, 7:26 AM
Restricted Application added a subscriber: Aklapper. · View Herald TranscriptAug 2 2016, 7:26 AM
Esc3300 added a parent task: T139912: Take care of disambiguation items at Wikidata.Aug 2 2016, 7:26 AM
Sjoerddebruin subscribed.Aug 2 2016, 9:45 AM

It already checks if one of the items is linked to the other (with https://www.wikidata.org/wiki/Property:P1889 for example), useful for multiple wrong merges. I like the idea of your suggestion, but I'm wondering how much a feature like this would impact the performance of the gadget.

Sjoerddebruin moved this task from Backlog to Additions and adjustments on the Wikidata-Gadgets board.Aug 2 2016, 9:45 AM
Esc3300 updated the task description. (Show Details)Aug 2 2016, 4:25 PM
Esc3300 mentioned this in T127213: [Bug] Merging doesn't always create a redirect.Sep 16 2016, 1:01 PM
Esc3300 renamed this task from prevent Wikidata merge gadget from merging disambiguation items with items that are not disambiguations (based on P31 values) to prevent merging disambiguation items with items that are not disambiguations (based on P31 values).Sep 17 2016, 10:48 AM
Esc3300 updated the task description. (Show Details)
Liuxinyu970226 added a project: Community-Wishlist-Survey-2016.Jan 1 2017, 2:51 AM
Liuxinyu970226 removed a project: Community-Wishlist-Survey-2016.Jan 2 2017, 12:46 AM
Superchilum subscribed.Jan 22 2018, 7:45 AM

What's the progress in this? The community of Wikidata is interested that this problems will be resolved.

https://www.wikidata.org/wiki/Wikidata:Project_chat#Preventing_to_merge_disambiguation_items_with_regular_items

Mbch331 subscribed.Jan 22 2018, 8:16 AM
In T141845#3916288, @Superchilum wrote:

What's the progress in this? The community of Wikidata is interested that this problems will be resolved.

https://www.wikidata.org/wiki/Wikidata:Project_chat#Preventing_to_merge_disambiguation_items_with_regular_items

Since this is about a gadget, it's up to the community to solve this issue. Gadgets are for the community.

Sjoerddebruin added a comment.Jan 22 2018, 8:40 AM
In T141845#3916353, @Mbch331 wrote:
In T141845#3916288, @Superchilum wrote:

What's the progress in this? The community of Wikidata is interested that this problems will be resolved.

https://www.wikidata.org/wiki/Wikidata:Project_chat#Preventing_to_merge_disambiguation_items_with_regular_items

Since this is about a gadget, it's up to the community to solve this issue. Gadgets are for the community.

I think this task also covers the API function.

Sjoerddebruin added a project: Wikidata.org.Jan 22 2018, 8:40 AM
Liuxinyu970226 subscribed.Jan 23 2018, 9:42 AM
Sjoerddebruin added a comment.Jan 31 2018, 8:53 AM

This is creating constraint violations day in, day out.

Superchilum added a comment.Jan 31 2018, 8:56 AM
In T141845#3933603, @Sjoerddebruin wrote:

This is creating constraint violations day in, day out.

I'm sorry, I don't understand. Does that mean you don't agree with this request?

Sjoerddebruin added a comment.Jan 31 2018, 8:58 AM
In T141845#3933604, @Superchilum wrote:
In T141845#3933603, @Sjoerddebruin wrote:

This is creating constraint violations day in, day out.

I'm sorry, I don't understand. Does that mean you don't agree with this request?

I agree very much. There are two cases:

  • People merging non-disambiguation sitelinks by accident in disambiguation item, then remove the existing sitelinks(!) except for the just added one and merge it into the "correct" item. Creating one big mess.
  • People who write over disambiguation pages and merge items afterwards.
Superchilum added a comment.Jan 31 2018, 8:59 AM
In T141845#3933609, @Sjoerddebruin wrote:
In T141845#3933604, @Superchilum wrote:
In T141845#3933603, @Sjoerddebruin wrote:

This is creating constraint violations day in, day out.

I'm sorry, I don't understand. Does that mean you don't agree with this request?

I agree very much. There are two cases:

  • People merging non-disambiguation sitelinks by accident in disambiguation item, then remove the existing sitelinks(!) except for the just added one and merge it into the "correct" item. Creating one big mess.
  • People who write over disambiguation pages and merge items afterwards.

Oh ok, now I get it :) thanks.

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