Property talk:P7975

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Filmfront film ID (archived)
identifiers for films in the Filmfront, a Norwegian movie database

Applicable "stated in" value	Filmfront (Q5449120)
Data type	External identifier
Domain	audiovisual work (Q2431196)
Allowed values	^[1-9]\d{0,6}$
Example	Radio 2 (Q11996817) → 6402 Jul i Blåfjell (Q19376541) → 4595 Amalies jul (Q11957654) → 6816 Star Wars: Episode III – Revenge of the Sith (Q42051) → 2773 Free Jimmy (Q1755719) → 4350 The Big One (Q1198825) → 3844
Source	https://filmfront.no
Formatter URL	https://web.archive.org/web/0/https://filmfront.no/utgivelse/$1
Related to country	Norway (Q20) (See 102 others)
See also	Filmfront person ID (archived) (P8037), Filmweb.no film ID (P12222)
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/P7975 Map Random list
Proposal discussion	Proposal discussion
Current uses	Total 21,234 Main statement 21,218 >99.9% of uses Qualifier 6 <0.1% of uses Reference 10 <0.1% of uses
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Type “audiovisual work (Q2431196)”: item must contain property “instance of (P31)” with classes “audiovisual work (Q2431196)” or their subclasses (defined using subclass of (P279)). (Help)

List of violations of this constraint: Database reports/Constraint violations/P7975#Type Q2431196, hourly updated report, SPARQL

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

List of violations of this constraint: Database reports/Constraint violations/P7975#Unique value, hourly updated report, SPARQL (every item), SPARQL (by value)

Format “[1-9]\d{0,6}”: value must be formatted using this pattern (PCRE syntax). (Help)

List of violations of this constraint: Database reports/Constraint violations/P7975#Format, hourly updated report, SPARQL

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

List of violations of this constraint: Database reports/Constraint violations/P7975#Single value, hourly updated report, 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/P7975#Entity types

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/P7975#Scope, SPARQL

Label required in languages: nb: Entities using this property should have labels in one of the following languages: nb (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/P7975#Label in 'nb' language, search, SPARQL

Label required in languages: nn: Entities using this property should have labels in one of the following languages: nn (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/P7975#Label in 'nn' language, search, SPARQL

This property is being used by: en:Template:Filmfront title Please notify projects that use this property before big changes (renaming, deletion, merge with another property, etc.)

Dear Vera,
Why do you want to absolutely change RegEx for the second time? I see no violation. In the declarations (therefore not in the constraints), format as a regular expression (P1793) makes the link only with regex101.com. The user can test with a finite expression. In the PCRE syntax, ^ starts capturing and $ closes capturing. Thank you for your understanding. Regards. —Eihel (talk) 14:19, 18 March 2020 (UTC)[reply]

the ^ and $ are completely superfluous since the regex needs to match the entire string already. None of the property examples have it and it's not needed here either. 1Veertje (talk) 15:46, 18 March 2020 (UTC)[reply]

If you are talking about other properties: FALSE. There are other Properties with this notation. For the superfluous side, I already explained the reason to you in my first intervention. If you had been a little curious, you would have clicked on a RegEx link.
Explanation: A hypotetic identifier is tested for this property, 1234567. Without ^ and $, there are 2 matches. With ^, only 123456 is retained. With $, only 234567 is retained. With these anchors, 1234567 is not a valid identifier. For information, there are also properties with a RegEx containing "backtracks". In addition, P1793 in the Statements has no effect on the property in production. In WD, the RegEx in the constraints are /contained/ (as in GREL), but there are different "flavors" in Wikidata. If you think these anchors are superfluous and I give you a reason, where is your problem? This is your third modification since last night and your first modification was already wrong. —Eihel (talk) 18:59, 18 March 2020 (UTC)[reply]