1 /*
2 * Copyright 2010 the original author or authors.
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 package org.callbackparams.combine;
18
19 import java.util.ArrayList;
20 import java.util.List;
21
22 /**
23 * A collection of arrays of callback-values. CombineStrategy
24 * implementations will create their callback-records in a manner that makes
25 * each callback-record contain exactly one callback-value from each array.
26 *
27 * @author Henrik Kaipe
28 */
29 public class ValuesCollection {
30
31 List valuesArrays = new ArrayList();
32
33 /**
34 * Attaches the specified array of callback-values at the end of this
35 * ValuesCollection.
36 */
37 public void add(Object[] valuesArray) {
38 if (0 < valuesArray.length) {
39 valuesArrays.add(valuesArray);
40 }
41 }
42
43 /**
44 * Returns the array that contains the callback-values available for
45 * the specified index of the callback-records created from this
46 * ValuesCollection instance.
47 */
48 public Object[] get(int index) {
49 return (Object[]) valuesArrays.get(index);
50 }
51
52 /**
53 * Returns the number of arrays of callback-values in this
54 * ValuesCollection instance.
55 */
56 public int size() {
57 return valuesArrays.size();
58 }
59 }