@Override
public boolean insert(int index, String key, Object value) throws ExpressionException {
int len = size();
if (index < 1 || index > len)
throw new ExpressionException(
"invalid index to insert a value to argument scope",
len == 0
? "can't insert in a empty argument scope"
: "valid index goes from 1 to " + (len - 1));
// remove all upper
LinkedHashMap lhm = new LinkedHashMap();
Collection.Key[] keys = keys();
Collection.Key k;
for (int i = 1; i <= keys.length; i++) {
if (i < index) continue;
k = keys[i - 1];
lhm.put(k.getString(), get(k, null));
removeEL(k);
}
// set new value
setEL(key, value);
// reset upper values
Iterator it = lhm.entrySet().iterator();
Map.Entry entry;
while (it.hasNext()) {
entry = (Entry) it.next();
setEL(KeyImpl.toKey(entry.getKey()), entry.getValue());
}
return true;
}
@Override
public Entry<Key, Object> next() {
Key key = KeyImpl.toKey(keys.next(), null);
return new EntryImpl(objs, key);
}
@Override
public Key toKey(Object obj, Key defaultValue) {
return KeyImpl.toKey(obj, defaultValue);
}
@Override
public Key toKey(Object obj) throws PageException {
return KeyImpl.toKey(obj);
}