@Override
public NodeValue exec(NodeValue v) {
// http://www.w3.org/TR/xpath-functions/#casting
String s = null;
Node n = v.asNode();
if (n.isBlank()) throw new ExprEvalException("CastXSD: Can't cast blank nodes: " + v);
if (n.isURI()) {
if (castType.equals(XSDDatatype.XSDstring)) s = n.getURI();
else
throw new ExprEvalException(
"CastXSD: Can't cast node: " + v + " to " + castType.getURI());
} else if (n.isLiteral())
// What if there is a lang tag?
s = n.getLiteralLexicalForm();
else
throw new ExprEvalException(
"CastXSD: Can't cast node: " + v + "(not a literal, not URI to string)");
if (s == null && v.isString()) s = v.getString();
if (s == null)
throw new ExprEvalException("CastXSD: Can't cast: " + v + "(has no string appearance)");
// // Special case - non-normalised xsd:booleans use 0 and 1.
// if ( v.isBoolean() )
// {
// if ( s.equals("0") ) s = "false" ;
// if ( s.equals("1") ) s = "true" ;
// }
NodeValue r = cast(s, v, castType);
return r;
}
protected NodeValue cast(String s, NodeValue nv, XSDDatatype castType2) {
if (whitespaceSurroundAllowed)
// Maybe more convenient, but is not strictly correct.
s = s.trim();
else {
// Correct mode. No white space allowed around values types numeric, boolean, dateTime, ...
// See also "JenaParameters.enableWhitespaceCheckingOfTypedLiterals" which defaults to false
// (accept surrounding whitespace)
// This CastXSD - not need to check it is an XSD datatype.
// if ( castType.getURI().startsWith(XSDDatatype.XSD) &&
if (castType instanceof XSDBaseNumericType
|| castType.equals(XSDDatatype.XSDfloat)
|| castType.equals(XSDDatatype.XSDdouble)
|| castType.equals(XSDDatatype.XSDboolean)
|| castType instanceof XSDAbstractDateTimeType) // Includes durations, and Gregorian
{
if (s.startsWith(" ") || s.endsWith(" "))
throw new ExprEvalException(
"CastXSD: Not a valid literal form (has whitespace): '" + s + "'");
}
}
// Plain cast.
try {
if (!castType.isValid(s))
throw new ExprEvalException("CastXSD: Not a valid literal form: '" + s + "'");
// Unfortunately, validity testing happens in NodeValue.makeNode as well.
// but better error messages this way.
return NodeValue.makeNode(s, castType);
} catch (RuntimeException ex) {
throw new ExprEvalException("CastXSD: Not a strictly valid literal form: '" + s + "'");
}
}
public void nullSafeSet(PreparedStatement statement, Object value, int index)
throws HibernateException, SQLException {
if (value == null) {
statement.setNull(index, Types.VARCHAR);
} else {
XSDDatatype valueXsd = (XSDDatatype) value;
String xsdUri = valueXsd.getURI();
xsdUri = xsdUri.replaceAll("http://www.w3.org/2001/XMLSchema#", "");
statement.setString(index, xsdUri);
}
}
protected NodeValue cast(String s, NodeValue nv, XSDDatatype castType2) {
// Plain cast.
if (!castType.isValid(s))
throw new ExprEvalException("CastXSD: Not a valid literal form: " + s);
// Unfortunately, validity testing happens in NodeValue.makeNode as well.
return NodeValue.makeNode(s, castType);
}
/** Static initializer. Adds builtin datatypes to the mapper. */
static {
theTypeMap = new TypeMapper();
theTypeMap.registerDatatype(XMLLiteralType.theXMLLiteralType);
XSDDatatype.loadXSDSimpleTypes(theTypeMap);
}
