1 /*
2 * Copyright 2004-2006 the Seasar Foundation and the Others.
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,
13 * either express or implied. See the License for the specific language
14 * governing permissions and limitations under the License.
15 */
16 package org.seasar.tuigwaa.database.function.criteria;
17
18 /***
19 * @author someda
20 */
21 public class IsNullCriteriaFunction extends AbstractCriteriaFunction {
22
23 public IsNullCriteriaFunction(){
24 super();
25 }
26
27 public IsNullCriteriaFunction(String field){
28 super(field);
29 }
30
31 public IsNullCriteriaFunction(String field, Object value){
32 super(field,value);
33 }
34
35 public Object evaluate(ICriteria criteria) {
36 return criteria.addIsNull(getField());
37 }
38
39 public Object evaluate(ICriteria criteria, Object right) {
40 return evaluate(criteria);
41 }
42
43 }