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.string;
18
19 import org.springmodules.validation.util.condition.Condition;
20 import org.springmodules.validation.util.condition.NonNullAcceptingTypeSpecificCondition;
21
22 /**
23 * An abstract condition that can be applied on objects of type {@link java.lang.String}.
24 *
25 * @author Uri Boness
26 */
27 public abstract class AbstractStringCondition extends NonNullAcceptingTypeSpecificCondition {
28
29 protected final static String EMPTY_STRING = "";
30
31 /**
32 * Constructs a new AbstractStringCondition.
33 */
34 protected AbstractStringCondition() {
35 super(String.class);
36 }
37
38 /**
39 * See {@link Condition#check(Object)}
40 *
41 * @throws IllegalArgumentException if the given object is either <code>null</code> or not of a
42 * <code>java.lang.String</code> type.
43 */
44 public final boolean doCheck(Object object) {
45 return checkString((String) object);
46 }
47
48 /**
49 * Checks whether the given string adheres to this condition.
50 *
51 * @param text The string to be checked.
52 * @return <code>true</code> if the given string adheres to this condition, <code>false</code> otherwise.
53 */
54 protected abstract boolean checkString(String text);
55
56 }