1 /*
2 * Copyright 2009-2013 smartics, Kronseder & Reiner GmbH
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 package de.smartics.validation.constraints.impl;
17
18 import javax.validation.ConstraintValidator;
19 import javax.validation.ConstraintValidatorContext;
20
21 import org.apache.commons.lang.StringUtils;
22
23 import de.smartics.validation.constraints.NotBlank;
24
25 /**
26 * Checks that a {@link String} value is not <code>null</code>, empty or
27 * contains only whitespaces.
28 */
29 public class NotBlankValidator implements ConstraintValidator<NotBlank, String>
30 {
31 // ******************************** Fields ********************************
32
33 // --- constants ----------------------------------------------------------
34
35 // --- members ------------------------------------------------------------
36
37 // ***************************** Initializer ******************************
38
39 // ***************************** Constructors *****************************
40
41 // ***************************** Inner Classes ****************************
42
43 // ******************************** Methods *******************************
44
45 // --- init ---------------------------------------------------------------
46
47 @Override
48 public void initialize(final NotBlank constraintAnnotation)
49 {
50 }
51
52 // --- get&set ------------------------------------------------------------
53
54 // --- business -----------------------------------------------------------
55
56 @Override
57 public boolean isValid(
58 final String value,
59 final ConstraintValidatorContext constraintValidatorContext)
60 {
61 return StringUtils.isNotBlank(value);
62 }
63
64 // --- object basics ------------------------------------------------------
65
66 }