1 /*
2 * Copyright (c) 2003, Henri Yandell
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or
6 * without modification, are permitted provided that the
7 * following conditions are met:
8 *
9 * + Redistributions of source code must retain the above copyright notice,
10 * this list of conditions and the following disclaimer.
11 *
12 * + Redistributions in binary form must reproduce the above copyright notice,
13 * this list of conditions and the following disclaimer in the documentation
14 * and/or other materials provided with the distribution.
15 *
16 * + Neither the name of OSJava nor the names of its contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
21 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
24 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
30 * POSSIBILITY OF SUCH DAMAGE.
31 */
32 package org.osjava.oscube.container;
33
34 import java.util.Iterator;
35 import java.util.LinkedList;
36 import java.util.List;
37
38 public class MultiResult implements Result {
39
40 private List list = new LinkedList();
41
42 public MultiResult() {
43 }
44
45 public void addResult(Result result) {
46 /// TODO: Might want to rethink this in case
47 /// results hide a lot of resource or something
48 this.list.add(result.iterateRows());
49 }
50
51 public Iterator iterateRows() {
52 return new MultiIterator(this.list);
53 }
54
55 }
56
57 class MultiIterator implements Iterator {
58
59 private List list;
60 private int current;
61 private int max;
62
63 public MultiIterator(List list) {
64 this.list = list;
65 this.max = list.size() - 1;
66 }
67
68 public boolean hasNext() {
69 boolean b = ((Iterator)list.get(this.current)).hasNext();
70 if(!b) {
71 if(this.current == max) {
72 return false;
73 }
74 }
75 return true;
76 }
77
78 public Object next() {
79 return ((Iterator)list.get(this.current)).next();
80 }
81
82 public void remove() {
83 ((Iterator)list.get(this.current)).remove();
84 }
85
86 }