| 33 | final long size = expr2.size() == 1 ? iter1.size() : -1; |
| 34 | |
| 35 | @Override |
| 36 | public Item next() throws QueryException { |
| 37 | final QueryFocus qf = qc.focus; |
| 38 | final Value qv = qf.value; |
| 39 | try { |
| 40 | Item item; |
| 41 | do { |
| 42 | // left operand |
| 43 | item = qc.next(iter1); |
| 44 | if(item == null) break; |
| 45 | // right operand |
| 46 | qf.value = item; |
| 47 | item = expr2.item(qc, info); |
| 48 | qf.value = qv; |
| 49 | } while(item == Empty.VALUE); |
| 50 | return item; |
| 51 | } finally { |
| 52 | qf.value = qv; |
| 53 | } |
| 54 | } |
| 55 | |
| 56 | @Override |
| 57 | public Item get(final long i) throws QueryException { |