/**
* Converts the specified result to an XQuery value.
*
* @param obj result object
* @param qc query context
* @param sc static context
* @return value
* @throws QueryException query exception
*/
public static Value toValue(final Object obj, final QueryContext qc, final StaticContext sc)
throws QueryException {
if (obj == null) return Empty.SEQ;
if (obj instanceof Value) return (Value) obj;
if (obj instanceof Iter) return ((Iter) obj).value();
// find XQuery mapping for specified type
final Type type = type(obj);
if (type != null) return type.cast(obj, qc, sc, null);
// primitive arrays
if (obj instanceof byte[]) return BytSeq.get((byte[]) obj);
if (obj instanceof long[]) return IntSeq.get((long[]) obj, AtomType.ITR);
if (obj instanceof char[]) return Str.get(new String((char[]) obj));
if (obj instanceof boolean[]) return BlnSeq.get((boolean[]) obj);
if (obj instanceof double[]) return DblSeq.get((double[]) obj);
if (obj instanceof float[]) return FltSeq.get((float[]) obj);
// no array: return Java type
if (!obj.getClass().isArray()) return new Jav(obj, qc);
// empty array
final int s = Array.getLength(obj);
if (s == 0) return Empty.SEQ;
// string array
if (obj instanceof String[]) {
final String[] r = (String[]) obj;
final byte[][] b = new byte[r.length][];
for (int v = 0; v < s; v++) b[v] = token(r[v]);
return StrSeq.get(b);
}
// character array
if (obj instanceof char[][]) {
final char[][] r = (char[][]) obj;
final byte[][] b = new byte[r.length][];
for (int v = 0; v < s; v++) b[v] = token(new String(r[v]));
return StrSeq.get(b);
}
// short array
if (obj instanceof short[]) {
final short[] r = (short[]) obj;
final long[] b = new long[r.length];
for (int v = 0; v < s; v++) b[v] = r[v];
return IntSeq.get(b, AtomType.SHR);
}
// integer array
if (obj instanceof int[]) {
final int[] r = (int[]) obj;
final long[] b = new long[r.length];
for (int v = 0; v < s; v++) b[v] = r[v];
return IntSeq.get(b, AtomType.INT);
}
// any other array (also nested ones)
final Object[] objs = (Object[]) obj;
final ValueBuilder vb = new ValueBuilder(objs.length);
for (final Object o : objs) vb.add(toValue(o, qc, sc));
return vb.value();
}
/**
* Evaluates the tokenize function.
*
* @param ctx query context
* @return function result
* @throws QueryException query exception
*/
private Value tokenize(final QueryContext ctx) throws QueryException {
final byte[] val = checkEStr(expr[0], ctx);
final Pattern p = pattern(expr[1], expr.length == 3 ? expr[2] : null, ctx);
if (p.matcher("").matches()) REGROUP.thrw(info);
final TokenList tl = new TokenList();
final String str = string(val);
if (!str.isEmpty()) {
final Matcher m = p.matcher(str);
int s = 0;
while (m.find()) {
tl.add(str.substring(s, m.start()));
s = m.end();
}
tl.add(str.substring(s, str.length()));
}
return StrSeq.get(tl);
}
