/**
* Returns an appropriate XQuery type for the specified Java object.
*
* @param o object
* @return item type or {@code null} if no appropriate type was found
*/
private static Type type(final Object o) {
final Type t = type(o.getClass());
if (t != null) return t;
if (o instanceof Element) return NodeType.ELM;
if (o instanceof Document) return NodeType.DOC;
if (o instanceof DocumentFragment) return NodeType.DOC;
if (o instanceof Attr) return NodeType.ATT;
if (o instanceof Comment) return NodeType.COM;
if (o instanceof ProcessingInstruction) return NodeType.PI;
if (o instanceof Text) return NodeType.TXT;
if (o instanceof Duration) {
final Duration d = (Duration) o;
return !d.isSet(DatatypeConstants.YEARS) && !d.isSet(DatatypeConstants.MONTHS)
? AtomType.DTD
: !d.isSet(DatatypeConstants.HOURS)
&& !d.isSet(DatatypeConstants.MINUTES)
&& !d.isSet(DatatypeConstants.SECONDS)
? AtomType.YMD
: AtomType.DUR;
}
if (o instanceof XMLGregorianCalendar) {
final QName type = ((XMLGregorianCalendar) o).getXMLSchemaType();
if (type == DatatypeConstants.DATE) return AtomType.DAT;
if (type == DatatypeConstants.DATETIME) return AtomType.DTM;
if (type == DatatypeConstants.TIME) return AtomType.TIM;
if (type == DatatypeConstants.GYEARMONTH) return AtomType.YMO;
if (type == DatatypeConstants.GMONTHDAY) return AtomType.MDA;
if (type == DatatypeConstants.GYEAR) return AtomType.YEA;
if (type == DatatypeConstants.GMONTH) return AtomType.MON;
if (type == DatatypeConstants.GDAY) return AtomType.DAY;
}
return null;
}
