1 /*
2 * Copyright 2004-2009 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.springmodules.validation.util.condition.collection;
18
19 import java.lang.reflect.Array;
20 import java.util.Collection;
21
22 import org.springframework.util.Assert;
23
24 /**
25 * An {@link AbstractCollectionCondition} implementation that checks whether the given collection or array
26 * is longer then a specific minimum size.
27 *
28 * @author Uri Boness
29 */
30 public class MinSizeCollectionCondition extends AbstractCollectionCondition {
31
32 private int minSize;
33
34 /**
35 * Constructs a new MinSizeCollectionCondition with a given minimum size.
36 *
37 * @param minSize The minimum size.
38 */
39 public MinSizeCollectionCondition(int minSize) {
40 Assert.isTrue(minSize >= 0, "Min size cannot be negative");
41 this.minSize = minSize;
42 }
43
44 /**
45 * Checks whether the length of the given array is greater than or equals the minimum size associated
46 * with this condition.
47 *
48 * @param array The array to be checked.
49 * @return <code>true</code> if the length of the given array is greater than or equals the minimum size
50 * associated with this condition, <code>false</code> otherwise.
51 */
52 protected boolean checkArray(Object array) {
53 return Array.getLength(array) >= minSize;
54 }
55
56 /**
57 * Checks whether the size of the given collection is greater than or equals the minimum size associated
58 * with this condition.
59 *
60 * @param collection The collection to be checked.
61 * @return <code>true</code> if the size of the given collection is greater than or equals the minimum size
62 * associated with this condition, <code>false</code> otherwise.
63 */
64 protected boolean checkCollection(Collection collection) {
65 return collection.size() >= minSize;
66 }
67
68 //============================================= Setter/Getter ===================================================
69
70 /**
71 * Returns the minimum size associated with this condition.
72 *
73 * @return The minimum size associated with this condition.
74 */
75 public int getMinSize() {
76 return minSize;
77 }
78
79 }