if ( NodeUtils.hasLang(node) )
// Check for RDF 1.1!
return null ;
LiteralLabel lit = node.getLiteral() ;
String lex = lit.getLexicalForm() ;
RDFDatatype datatype = lit.getDatatype() ;
// Quick check.
// Only XSD supported.
// And (for testing) roman numerals.
String datatypeURI = datatype.getURI() ;
if ( ! datatypeURI.startsWith(xsdNamespace) && ! SystemARQ.EnableRomanNumerals )
{
// Not XSD.
return null ;
}
try { // DatatypeFormatException - should not happen
if ( SystemARQ.SameValueAsString && XSDstring.isValidLiteral(lit) )
// String - plain or xsd:string
return new NodeValueString(lit.getLexicalForm(), node) ;
// Otherwise xsd:string is like any other unknown datatype.
// Ditto literals with language tags (which are handled by nodeToNodeValue)
// isValidLiteral is a value test - not a syntactic test.
// This makes a difference in that "1"^^xsd:decimal" is a
// valid literal for xsd:integer (all other cases are subtypes of xsd:integer)
// which we want to become integer anyway).
// Order here is promotion order integer-decimal-float-double
if ( ! datatype.equals(XSDdecimal) )
{
// XSD integer and derived types
if ( XSDinteger.isValidLiteral(lit) )
{
String s = node.getLiteralLexicalForm() ;
if ( s.startsWith("+") )
// BigInteger does not accept leading "+"
s = s.substring(1) ;
// Includes subtypes (int, byte, postiveInteger etc).
// NB Known to be valid for type by now
BigInteger integer = new BigInteger(s) ;
return new NodeValueInteger(integer, node) ;
}
}
if ( datatype.equals(XSDdecimal) && XSDdecimal.isValidLiteral(lit) )
{
BigDecimal decimal = new BigDecimal(lit.getLexicalForm()) ;
return new NodeValueDecimal(decimal, node) ;
}
if ( datatype.equals(XSDfloat) && XSDfloat.isValidLiteral(lit) )
{
// NB If needed, call to floatValue, then assign to double.
// Gets 1.3f != 1.3d right
float f = ((Number)lit.getValue()).floatValue() ;
return new NodeValueFloat(f, node) ;
}
if ( datatype.equals(XSDdouble) && XSDdouble.isValidLiteral(lit) )
{
double d = ((Number)lit.getValue()).doubleValue() ;
return new NodeValueDouble(d, node) ;
}
// XXX Pending Jena update ...
if ( ( datatype.equals(XSDdateTime) || dtXSDdateTimeStamp.equals(datatypeURI) ) &&
XSDdateTime.isValid(lex) )
{
XSDDateTime dateTime = (XSDDateTime)lit.getValue() ;
return new NodeValueDT(lex, node) ;
}
if ( datatype.equals(XSDdate) && XSDdate.isValidLiteral(lit) )
{
// Jena datatype support works on masked dataTimes.
XSDDateTime dateTime = (XSDDateTime)lit.getValue() ;
return new NodeValueDT(lex, node) ;
}
if ( datatype.equals(XSDtime) && XSDtime.isValidLiteral(lit) )
{
// Jena datatype support works on masked dataTimes.
XSDDateTime time = (XSDDateTime)lit.getValue() ;
return new NodeValueDT(lex, node) ;
}
if ( datatype.equals(XSDgYear) && XSDgYear.isValidLiteral(lit) )
{
XSDDateTime time = (XSDDateTime)lit.getValue() ;
return new NodeValueDT(lex, node) ;
}
if ( datatype.equals(XSDgYearMonth) && XSDgYearMonth.isValidLiteral(lit) )
{
XSDDateTime time = (XSDDateTime)lit.getValue() ;
return new NodeValueDT(lex, node) ;
}
if ( datatype.equals(XSDgMonth) && XSDgMonth.isValidLiteral(lit) )
{
XSDDateTime time = (XSDDateTime)lit.getValue() ;
return new NodeValueDT(lex, node) ;
}
if ( datatype.equals(XSDgMonthDay) && XSDgMonthDay.isValidLiteral(lit) )
{
XSDDateTime time = (XSDDateTime)lit.getValue() ;
return new NodeValueDT(lex, node) ;
}
if ( datatype.equals(XSDgDay) && XSDgDay.isValidLiteral(lit) )
{
XSDDateTime time = (XSDDateTime)lit.getValue() ;
return new NodeValueDT(lex, node) ;
}
// XXX Pending Jena update ...
if ( ( datatype.equals(XSDduration) ||
dtXSDdayTimeDuration.equals(datatypeURI) ||
dtXSDyearMonthDuration.equals(datatypeURI) ) &&
XSDduration.isValid(lex) ) // use lex
{
Duration duration = xmlDatatypeFactory.newDuration(lex) ;
if ( dtXSDdayTimeDuration.equals(datatypeURI) && ! XSDFuncOp.isDayTime(duration) )
return null ;
if ( dtXSDyearMonthDuration.equals(datatypeURI) && ! XSDFuncOp.isYearMonth(duration) )
return null ;
return new NodeValueDuration(duration, node) ;
}
if ( datatype.equals(XSDboolean) && XSDboolean.isValidLiteral(lit) )
{
boolean b = ((Boolean)lit.getValue()).booleanValue() ;
return new NodeValueBoolean(b, node) ;
}