public XQValue cast(XQItem value, EvalContext context) throws EvaluationException {
XQItemType type = value.getItemType();
Duration result = null;
try {
if (type instanceof StringType) result = Duration.parseDuration(value.getString().trim());
else if (type instanceof DurationType) result = value.getDuration();
else invalidCast(type);
} catch (DateTimeException e) {
castException(e);
}
return new SingleDuration(result, XQType.DURATION);
}
public double evalAsDouble(Focus focus, EvalContext context) throws EvaluationException {
context.at(this);
XQItem v = args[0].evalAsOptItem(focus, context);
if (v == null) throw EmptyException.instance();
if (v instanceof MomentValue) {
MomentValue mv = (MomentValue) v;
return mv.getValue().getSecond();
}
try {
DateTime dt = DateTime.parseDateTime(v.getString());
return dt.getSecond();
} catch (DateTimeException e) {
context.error(Conversion.ERR_CAST, this, "cannot cast to xs:dateTime : " + e.getMessage());
return 0;
}
}
public XQValue cast(XQItem value, EvalContext context) throws EvaluationException {
XQItemType type = value.getItemType();
switch (type.quickCode()) {
case XQType.QT_STRING:
case XQType.QT_UNTYPED:
return new SingleBoolean(Conversion.toBoolean(value.getString().trim()));
case XQType.QT_DEC:
case XQType.QT_INT:
case XQType.QT_FLOAT:
case XQType.QT_DOUBLE: // extension
case XQType.QT_BOOL:
return new SingleBoolean(value.getBoolean());
default:
invalidCast(type);
return null;
}
}