Property talk:P12498

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JAHIS Law Database ID
identifier for law/regulation entry in full-text database of acts (1886-2017) and imperial ordinances (1886-1947) in Japan

Associated item	Graduate School of Law, Nagoya University (Q125102357)
Applicable "stated in" value	Nagoya University legal database (Q124473860)
Data type	External identifier
Domain	statute (Q820655) or imperial ordinance (Q67421961)
Allowed values	[1-5]\d{2}[ai]\d{4}
Example	no label (Q11392048) → 119i0001 Registration Act (Q117000755) → 119a0001 Alien Registration Order (Q11430365) → 322i0207 Private Lodging Business Act (Q56059655) → 429a0065
Source	https://jahis.law.nagoya-u.ac.jp/lawdb/
Formatter URL	https://jahis.law.nagoya-u.ac.jp/lawdb/l/$1
Related to country	Japan (Q17) (See 145 others)
See also	e-GOV law ID (P8610), NDL law ID (P8635), law identifier (P8550)
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/P12498 Map Random list
Proposal discussion	Proposal discussion
Current uses	Total 1,899 Main statement 1,891 out of 39,004 (5% complete) 99.6% of uses Qualifier 4 0.2% of uses Reference 4 0.2% of uses
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[create Create a translatable help page (preferably in English) for this property to be included here]

Type “statute (Q820655), imperial ordinance (Q67421961)”: item must contain property “instance of (P31)” with classes “statute (Q820655), imperial ordinance (Q67421961)” or their subclasses (defined using subclass of (P279)). (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/P12498#Type Q820655, Q67421961, 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/P12498#Scope, SPARQL

Format “[1-5]\d{2}[ai]\d{4}”: value must be formatted using this pattern (PCRE syntax). (Help)

List of violations of this constraint: Database reports/Constraint violations/P12498#Format, hourly updated report, SPARQL

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/P12498#Unique value, SPARQL (every item), SPARQL (by value)

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/P12498#Entity types

Label required in languages: ja: Entities using this property should have labels in one of the following languages: ja (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/P12498#Label in 'ja' language, search, SPARQL

Item “law identifier (P8550)”: Items with this property should also have “law identifier (P8550)”. (Help)

List of violations of this constraint: Database reports/Constraint violations/P12498#Item P8550, hourly updated report, search, SPARQL

Item “applies to jurisdiction (P1001): Japan (Q17), Empire of Japan (Q188712), Karafuto Prefecture (Q696736), Taiwan under Japanese rule (Q137816), Korea under Japanese rule (Q503585), Kwantung Leased Territory (Q678658), South Seas Mandate (Q718763), South Manchuria Railway Zone (Q6141175)”: Items with this property should also have “applies to jurisdiction (P1001): Japan (Q17), Empire of Japan (Q188712), Karafuto Prefecture (Q696736), Taiwan under Japanese rule (Q137816), Korea under Japanese rule (Q503585), Kwantung Leased Territory (Q678658), South Seas Mandate (Q718763), South Manchuria Railway Zone (Q6141175)”. (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/P12498#Item P1001, search

Item “country (P17): Japan (Q17), Empire of Japan (Q188712)”: Items with this property should also have “country (P17): Japan (Q17), Empire of Japan (Q188712)”. (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/P12498#Item P17, search

Note on this property

The value of this property seems derived from law identifier (P8550) of the law item:

• The first digit represents era name (Q256408): 1, Meiji period (Q3125096); 2, Taishō period (Q329174); 3, Shōwa era (Q327567); 4, Heisei era (Q234510); and (probably) 5, Reiwa era (Q62609017)
• The next 2 digits represent a year of the era for the item's date of promulgation (P7589)
• The next digit represents the class: a, statute (Q820655); and i, edict (Q1284645)
• Remaining 4 digits represent the serial number within the year

Note that e-GOV law ID (P8610) uses similar, more data-rich coding scheme (only available in Japanese); we can map IDs from e-GOV law ID (P8610) to JAHIS Law Database ID (P12498), but the reverse is not obvious. Mzaki (talk) 14:42, 25 February 2024 (UTC)