Property talk:P9070

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Internet Encyclopedia of Ukraine ID
identifier for an article in the Internet Encyclopedia of Ukraine

Applicable "stated in" value	Internet Encyclopedia of Ukraine (Q87193076)
Data type	External identifier
Allowed values	[A-Z]\\[A-Z]\\[A-Za-z0-9]+
Example	Kyiv (Q1899) → K\Y\Kyiv concentration camp (Q152081) → C\O\Concentrationcamps Pavlo Zahrebelnyi (Q983989) → Z\A\ZahrebelnyPavlo
Source	http://www.encyclopediaofukraine.com/main-index.asp
Formatter URL	https://wikidata-externalid-url.toolforge.org/?p=9070&url_prefix=http://www.encyclopediaofukraine.com/display.asp?linkpath=pages\&id=$1 http://www.encyclopediaofukraine.com/display.asp?linkpath=pages\$1
Related to country	Ukraine (Q212) (See 57 others)
Lists	Items with the most statements of this property Count of items by number of statements (chart) Items with the most statements Items with the fewest statements Count of items by number of sitelinks (chart) Items with the most sitelinks Items with the most sitelinks, but no link to one Wikipedia (sample: Welsh Wikipedia, cywiki) Items with the fewest sitelinks Most linked wikis Items with the most identifier properties Items with no other external identifier Items with no other statements Most recently created items Items with novalue claims Items with unknown value claims Usage history (total) Usage history (main statement) Chart by item creation date Database reports/Constraint violations/P9070 Map Random list
Proposal discussion	Proposal discussion
Current uses	Total 1,119 Main statement 1,089 out of 8,136 (13% complete) 97.3% of uses Qualifier 3 0.3% of uses Reference 27 2.4% of uses
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[create Create a translatable help page (preferably in English) for this property to be included here]

Distinct values: this property likely contains a value that is different from all other items. (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P9070#Unique value, SPARQL (every item), SPARQL (by value)

Format “[A-Z]\\[A-Z]\\[A-Za-z0-9]+”: value must be formatted using this pattern (PCRE syntax). (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P9070#Format, SPARQL

Single value: this property generally contains a single value. (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P9070#Single value, SPARQL

Scope is as main value (Q54828448), as reference (Q54828450): the property must be used by specified way only (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P9070#Scope, SPARQL

Allowed entity types are Wikibase item (Q29934200): the property may only be used on a certain entity type (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P9070#Entity types

This property is being used by: ko:틀:위키데이터 속성 추적 Please notify projects that use this property before big changes (renaming, deletion, merge with another property, etc.)

Discussion

Backslash decoding problem

There’s a problem with the parsing of ID’s to generate URLs. The formatter URL contains a backslash which does not get URL percent-encoded when the URL is generated. I presume this is a result of backslashes aren’t handled properly by simple regex replacement.

Here’s an example to illustrate the problem:

1. The formatter URL is http://www.encyclopediaofukraine.com/display.asp?linkpath=pages\$1
2. Wikidata item: history of Ukraine (Q210701) has the ID H\I\historyofukraine
3. The generated link should be http://www.encyclopediaofukraine.com/display.asp?linkpath=pages\ + H\I\historyofukraine + .htm
4. And it should be URL-encoded and sent as http://www.encyclopediaofukraine.com/display.asp?linkpath=pages%5CH%5CI%5CHistoryofUkraine.htm, with every backslash <\> changed to <%5C>

But what actually gets sent is http://www.encyclopediaofukraine.com/display.asp?linkpath=pages\H%5CI%5Chistoryofukraine with the first backslash in literal text. This happens to work for me, I presume because the server happens to accept it. But it is unintended, random and messy, and I believe it is technically a malformed URL.

I propose correcting this by broadening the definition of the ID so that all backslashes will get processed. Maybe it’s neater and safer to include the entire unit of the linkpath parameter, for example, pages\H\I\historyofukraine.

Unfortunately, this requires changing the ID for over 300 items. I am glad to make the update and do the work. Is there a best sequence for the changeover?

Please let me know if this sounds good. —Michael Z. 20:41, 17 February 2021 (UTC)

The encoding is being worked on at the moment, see phabricator:T271126. I'm not sure if it will change anything for backslashes. Ghouston (talk) 21:14, 17 February 2021 (UTC)

I think it probably will, since the "rawurlencode" PHP function does seem to encode "all non-alphanumeric characters except -_.~": https://www.php.net/manual/en/function.rawurlencode.php. Ghouston (talk) 21:18, 17 February 2021 (UTC)

Could the backslash be changed in the formatter? There seems to be nowhere to test, as Sandbox-External identifier (P2536) is stuck with a cached formatter, and formatter URLs are not converted into links at test.wikidata.org. Peter James (talk) 13:12, 18 February 2021 (UTC)