Property Datatypes

[VladimirAlexiev]

Currently UNCEFACT uses only two literal datatypes: xsd:string (791 props) and xsd:token (159 props).

UNCEFACT prop names are made according to ISO/IEC 11179 Metadata Registry (MDR), part 5:2015 Naming and identification principles. The last word of prop names (let's call it "kind") suggests many other datatypes.

Surely trade involves some numbers and some dates?!?

I checked that all props with kind Id are xsd:token (good). This query counts xsd:string props by "kind":

PREFIX schema: <http://schema.org/>
PREFIX xsd: <http://www.w3.org/2001/XMLSchema#>
select ?kind (count(*) as ?c) {
  ?prop schema:rangeIncludes xsd:string
  bind(replace(str(?prop),".*([A-Z][a-z]*)","$1") as ?kind)
  filter(regex(?kind,"^[A-Z]"))
} group by ?kind order by ?kind

Count and tentative proposed changes:	kind	c	change to
"Access"	1
"Agency"	1
"Amount"	89	numeric
"Basis"	2
"Box"	1
"Charge"	1
"Code"	154	xsd:token
"Conditions"	1
"Criteria"	1
"Date"	3	xsd:date
"Description"	21
"Dimension"	1
"Five"	1
"Four"	1
"Indicator"	73	xsd:boolean
"Information"	21
"Instructions"	2
"Limit"	2
"List"	2
"Means"	1
"Measure"	66
"Name"	47
"Number"	4	numeric
"Numeric"	15	IndexNumeric, SequenceNumeric -> xsd:integer
"Object"	7
"Of"	2
"One"	1
"Pattern"	1
"Percent"	16	numeric
"Phrase"	1
"Point"	1
"Procedure"	1
"Quantity"	91	numeric
"Rate"	4
"Reason"	7
"Reference"	6
"Remark"	2
"Remarks"	1
"Restriction"	3
"Result"	1
"Status"	1
"Three"	1
"Time"	79	xsd:dateTime
"Title"	1
"Two"	1
"Type"	9
"Use"	1
"Value"	1
"Zone"	1

Examples:

• Numeric candidates: uncefact:usedToDateQuotaQuantity, uncefact:usedSignalSourceQuantity, taxBasisTotalAmount, taxBasisAllowanceRate
• date or dateTime candidates: uncefact:occurrenceDateTime
• xsd:boolean candidates: uncefact:nilCarriageValueIndicator, uncefact:nilCustomsValueIndicator, uncefact:nilInsuranceValueIndicator

[Fak3]

Edi3 issue: https://github.com/edi3/edi3-json-ld-ndr/issues/51

[nissimsan]

It's very hard to disagree on this! :)

@kshychko , we did some work on this - can you double check if this was fixed already, pls?

[nissimsan]

@Fak3 , how are you doing? We'd love to have you back and attend the calls!!! ❤️

[VladimirAlexiev]

Currently, all Id properties are rendered as token (good!) and all other data properties as string (not good):

grep rangeIncludes uncefact.ttl |sort|uniq -c|sort -rn|less
    791         schema:rangeIncludes            xsd:string ;  
    159         schema:rangeIncludes            xsd:token ;   

In particular:

• Indicator properties should be xsd:boolean but are currently string, eg

  uncefact:wasteReportingExemptionIndicator
      schema:rangeIncludes            xsd:string ;

• Numeric properties should be xsd:integer, eg

  uncefact:lineCountNumeric
      rdfs:comment                    "The count of the number of lines in this exchanged document." ;
      schema:rangeIncludes            xsd:string ;