Andy, now I'm confused. Where are you looking? I checked the RDF/XML
version of Time ontology and it says:
<owl:DatatypeProperty rdf:ID="year">
<rdfs:domain rdf:resource="#DateTimeDescription" />
<rdfs:range rdf:resource="&xsd;gYear" />
</owl:DatatypeProperty>
<owl:DatatypeProperty rdf:ID="month">
<rdfs:domain rdf:resource="#DateTimeDescription" />
<rdfs:range rdf:resource="&xsd;gMonth" />
</owl:DatatypeProperty>
<owl:DatatypeProperty rdf:ID="day">
<rdfs:domain rdf:resource="#DateTimeDescription" />
<rdfs:range rdf:resource="&xsd;gDay" />
</owl:DatatypeProperty>
On Thu, Nov 14, 2013 at 7:10 PM, Andy Seaborne <[email protected]> wrote:
> On 14/11/13 16:42, Martynas Jusevičius wrote:
>>
>> OK I was probably too quick - now I realized the syntax of xsd:gMonth
>> and xsd:gDay is not so simple...
>
>
> :-)
>
> http://www.w3.org/TR/xmlschema11-2/#dateTime for details.
>
> The range of time:month is a non-negative integer so may be single digit.
> That'll need normalizing and checking to use xsd: where it must be two
> digits. Ditto time:day. And maybe people write years as two digits.
>
> gMonth and gDay have "missing parts" indicators "--" and "---"
> but I don't see any g* here.
>
> Andy
>
>
>>
>> On Thu, Nov 14, 2013 at 4:05 PM, Martynas Jusevičius
>> <[email protected]> wrote:
>>>
>>> I came up with an approach that concatenates lexical values and
>>> doesn't need Calendar or DateTimeStruct.
>>>
>>> Not sure however how this aligns with the range of time:inXSDDateTime
>>> which is xsd:dateTime - can xsd:gYear/xsd:gMonthDay/xsd:date be
>>> treated as xsd:dateTime values? I guess I'll have to typecast them in
>>> SPARQL.
>>>
>>> if
>>> (resource.hasProperty(ResourceFactory.createProperty("http://www.w3.org/2006/time#inDateTime";)))
>>> {
>>> Literal dateTime;
>>> Resource dateTimeDesc =
>>>
>>> resource.getPropertyResourceValue(ResourceFactory.createProperty("http://www.w3.org/2006/time#inDateTime";));
>>>
>>> if
>>> (!dateTimeDesc.hasProperty(ResourceFactory.createProperty("http://www.w3.org/2006/time#year";)))
>>> throw new DateTimeParseException("time:year value is
>>> missing");
>>> RDFNode yearObject =
>>>
>>> dateTimeDesc.getProperty(ResourceFactory.createProperty("http://www.w3.org/2006/time#year";)).getObject();
>>> if (!yearObject.isLiteral())
>>> throw new DateTimeParseException("time:year value is
>>> not a Literal");
>>>
>>> if
>>> (dateTimeDesc.hasProperty(ResourceFactory.createProperty("http://www.w3.org/2006/time#month";)))
>>> {
>>> RDFNode monthObject =
>>>
>>> dateTimeDesc.getProperty(ResourceFactory.createProperty("http://www.w3.org/2006/time#month";)).getObject();
>>> if (!monthObject.isLiteral())
>>> throw new DateTimeParseException("time:month value
>>> is not a Literal");
>>>
>>> if
>>>
>>> (dateTimeDesc.hasProperty(ResourceFactory.createProperty("http://www.w3.org/2006/time#day";)))
>>> {
>>> RDFNode dayObject =
>>>
>>> dateTimeDesc.getProperty(ResourceFactory.createProperty("http://www.w3.org/2006/time#day";)).getObject();
>>> if (!dayObject.isLiteral())
>>> throw new DateTimeParseException("time:day
>>> value is not a Literal");
>>>
>>> dateTime =
>>>
>>> resource.getModel().createTypedLiteral(yearObject.asLiteral().getLexicalForm()
>>> + "-" +
>>> monthObject.asLiteral().getLexicalForm()
>>> + "-" +
>>> dayObject.asLiteral().getLexicalForm(),
>>> XSDDatatype.XSDdate);
>>> }
>>> else
>>> {
>>> dateTime =
>>>
>>> resource.getModel().createTypedLiteral(yearObject.asLiteral().getLexicalForm()
>>> + "-" +
>>>
>>> monthObject.asLiteral().getLexicalForm(),
>>> XSDDatatype.XSDgMonthDay);
>>> }
>>> }
>>> else
>>> dateTime = yearObject.asLiteral();
>>>
>>>
>>> resource.addLiteral(ResourceFactory.createProperty("http://www.w3.org/2006/time#inXSDDateTime";),
>>> dateTime);
>>> }
>>>
>>> On Thu, Nov 14, 2013 at 3:08 PM, Martynas Jusevičius
>>> <[email protected]> wrote:
>>>>
>>>> I'll try DateTimeStruct again, but that basically means I need my own
>>>> copy of the class, since I currently cannot extend it to override the
>>>> private constructor?
>>>>
>>>> On Thu, Nov 14, 2013 at 2:15 PM, Andy Seaborne <[email protected]> wrote:
>>>>>
>>>>> Hi there,
>>>>>
>>>>> DateTimeStruct is, well, a struct. The fields are public. You could
>>>>> write a
>>>>> builder to target that. The default constructor could be made public.
>>>>> The
>>>>> statics are specific patterns for the XSD date/time datatypes with
>>>>> validation.
>>>>>
>>>>> DateTimeStruct represents the Date/time Seven-property model of XSD.
>>>>> It can
>>>>> produce the string for xsd:date or xsd:dateTime but not the gregorial
>>>>> g*
>>>>> datatypes.
>>>>>
>>>>> java.util.calendar is OK as a value but, in the details, unusable for
>>>>> XSD
>>>>> types. Why not set DateTimeStruct fields?
>>>>>
>>>>> javax.xml.datatype.XMLGregorianCalendar could be of use - it has
>>>>> getters and
>>>>> setters.
>>>>>
>>>>> For DateTimeStruct or XMLGregorianCalendar, you can then use
>>>>>
>>>>> createTypedLiteral(String lex, RDFDatatype dtype)
>>>>>
>>>>>
>>>>>> Not all mandatory - the
>>>>>> format can be YYYY, YYYY-MM, YYYY-MM-DD.
>>>>>
>>>>>
>>>>> You could build the lexical form.
>>>>>
>>>>> Andy
>>>>>
>>>>>
>>>>> On 14/11/13 02:02, Martynas Jusevičius wrote:
>>>>>>
>>>>>>
>>>>>> Hey,
>>>>>>
>>>>>> I have datetime components as 3 separate literals, with xsd:gYear,
>>>>>> xsd:gMonth, xsd:gDay respective datatypes. Not all mandatory - the
>>>>>> format can be YYYY, YYYY-MM, YYYY-MM-DD.
>>>>>>
>>>>>> Now how do I combine those into a single xsd:dateTime Literal? A
>>>>>> concrete use case would be converting time:inDateTime values into
>>>>>> time:inXSDDateTime values:
>>>>>> http://www.w3.org/TR/owl-time/#calclock
>>>>>>
>>>>>> I came up with the code below which seems to work but is not pretty
>>>>>> (and doesn't deal with time). I also looked at DateTimeStruct but
>>>>>> either way there seemed to be some datatype mismatch. I think it would
>>>>>> make more sense for DateTimeStruct to use the builder pattern instead
>>>>>> of static methods.
>>>>>>
>>>>>> Is there a better way?
>>>>>>
>>>>>> if
>>>>>>
>>>>>> (resource.hasProperty(ResourceFactory.createProperty("http://www.w3.org/2006/time#inDateTime";)))
>>>>>> {
>>>>>> Calendar calendar = Calendar.getInstance();
>>>>>> Resource dateTimeDesc =
>>>>>>
>>>>>>
>>>>>> resource.getPropertyResourceValue(ResourceFactory.createProperty("http://www.w3.org/2006/time#inDateTime";));
>>>>>>
>>>>>> if
>>>>>>
>>>>>> (dateTimeDesc.hasProperty(ResourceFactory.createProperty("http://www.w3.org/2006/time#year";)))
>>>>>> {
>>>>>> RDFNode object =
>>>>>>
>>>>>>
>>>>>> dateTimeDesc.getProperty(ResourceFactory.createProperty("http://www.w3.org/2006/time#year";)).getObject();
>>>>>> if (object.isLiteral())
>>>>>> {
>>>>>> Literal literal = object.asLiteral();
>>>>>> calendar.set(Calendar.YEAR,
>>>>>> Integer.parseInt(literal.getLexicalForm()));
>>>>>> }
>>>>>> }
>>>>>> else throw new DateTimeParseException("time:year value
>>>>>> is
>>>>>> missing");
>>>>>>
>>>>>> if
>>>>>>
>>>>>> (dateTimeDesc.hasProperty(ResourceFactory.createProperty("http://www.w3.org/2006/time#month";)))
>>>>>> {
>>>>>> RDFNode object =
>>>>>>
>>>>>>
>>>>>> dateTimeDesc.getProperty(ResourceFactory.createProperty("http://www.w3.org/2006/time#month";)).getObject();
>>>>>> if (object.isLiteral())
>>>>>> {
>>>>>> Literal literal = object.asLiteral();
>>>>>> calendar.set(Calendar.MONTH,
>>>>>> Integer.parseInt(literal.getLexicalForm()));
>>>>>> }
>>>>>> }
>>>>>>
>>>>>> if
>>>>>>
>>>>>> (dateTimeDesc.hasProperty(ResourceFactory.createProperty("http://www.w3.org/2006/time#day";)))
>>>>>> {
>>>>>> RDFNode object =
>>>>>>
>>>>>>
>>>>>> dateTimeDesc.getProperty(ResourceFactory.createProperty("http://www.w3.org/2006/time#day";)).getObject();
>>>>>> if (object.isLiteral())
>>>>>> {
>>>>>> Literal literal = object.asLiteral();
>>>>>> calendar.set(Calendar.DAY_OF_MONTH,
>>>>>> Integer.parseInt(literal.getLexicalForm()));
>>>>>> }
>>>>>> }
>>>>>>
>>>>>> calendar.set(Calendar.HOUR, 0);
>>>>>> calendar.set(Calendar.MINUTE, 0);
>>>>>> calendar.set(Calendar.SECOND, 0);
>>>>>> Literal dateTime =
>>>>>> resource.getModel().createTypedLiteral(calendar);
>>>>>>
>>>>>>
>>>>>> resource.addLiteral(ResourceFactory.createProperty("http://www.w3.org/2006/time#inXSDDateTime";),
>>>>>> dateTime);
>>>>>> }
>>>>>>
>>>>>> Martynas
>>>>>> graphityhq.com
>>>>>>
>>>>>
>
