rdf11:rdf_canonical_literal/2

/usr/lib/swipl/library/semweb/rdf11.pl

library
- semweb

rdf_canonical_literal(++In, -Literal) is det

Transform a relaxed literal specification as allowed for rdf_assert/3 into its canonical form. The following Prolog terms are translated:

Prolog Term	Datatype IRI
float	xsd:double
integer	xsd:integer
string	xsd:string
`true` or `false`	xsd:boolean
`date(Y,M,D)`	xsd:date
`date_time(Y,M,D,HH,MM,SS)`	xsd:dateTime
`date_time(Y,M,D,HH,MM,SS,TZ)`	xsd:dateTime
`month_day(M,D)`	xsd:gMonthDay
`year_month(Y,M)`	xsd:gYearMonth
`time(HH,MM,SS)`	xsd:time

For example:

?- rdf_canonical_literal(42, X).
X = 42^^'http://www.w3.org/2001/XMLSchema#integer'.