+INF lexical representation for xsd:float and xsd:double is not parsed

[RickMoynihan]

Current Behavior

The class org.eclipse.rdf4j.model.datatypes.XMLDatatypeUtil does not parse the XSD lexical representation +INF for either floats or doubles.

See the spec for lexical representations and the four literals here: https://www.w3.org/TR/xmlschema11-2/#sec-lex-double.

I should add that I don't currently require support for this, it was just something I noticed whilst digging through the specs and code. It also seems that other implementations such as javax.xml.bind.DatatypeConverter have the same issue.

Expected Behavior

org.eclipse.rdf4j.model.datatypes.XMLDatatypeUtil.parseDouble("+INF"); // => Double.POSITIVE_INFINITY

Steps To Reproduce

org.eclipse.rdf4j.model.datatypes.XMLDatatypeUtil.parseDouble("+INF"); // java.lang.NumberFormatException For input string: "INF"

Version

4.3.7

Are you interested in contributing a solution yourself?

None

Anything else?

No response

[hmottestad]

Thanks for discovering this bug!