Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||
NullLiteral |
|
| 1.0;1 |
1 | /* | |
2 | * Licensed to the Apache Software Foundation (ASF) under one or more | |
3 | * contributor license agreements. See the NOTICE file distributed with | |
4 | * this work for additional information regarding copyright ownership. | |
5 | * The ASF licenses this file to You under the Apache License, Version 2.0 | |
6 | * (the "License"); you may not use this file except in compliance with | |
7 | * the License. You may obtain a copy of the License at | |
8 | * | |
9 | * http://www.apache.org/licenses/LICENSE-2.0 | |
10 | * | |
11 | * Unless required by applicable law or agreed to in writing, software | |
12 | * distributed under the License is distributed on an "AS IS" BASIS, | |
13 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
14 | * See the License for the specific language governing permissions and | |
15 | * limitations under the License. | |
16 | */ | |
17 | package org.apache.commons.el; | |
18 | ||
19 | /** | |
20 | * | |
21 | * <p>An expression representing a null literal value | |
22 | * | |
23 | * @author Nathan Abramson - Art Technology Group | |
24 | * @version $Change: 181177 $$DateTime: 2001/06/26 08:45:09 $$Author: bayard $ | |
25 | **/ | |
26 | ||
27 | public class NullLiteral | |
28 | extends Literal | |
29 | { | |
30 | //------------------------------------- | |
31 | // Member variables | |
32 | //------------------------------------- | |
33 | ||
34 | 0 | public static final NullLiteral SINGLETON = new NullLiteral (); |
35 | ||
36 | //------------------------------------- | |
37 | /** | |
38 | * | |
39 | * Constructor | |
40 | **/ | |
41 | public NullLiteral () | |
42 | { | |
43 | 0 | super (null); |
44 | 0 | } |
45 | ||
46 | //------------------------------------- | |
47 | // Expression methods | |
48 | //------------------------------------- | |
49 | /** | |
50 | * | |
51 | * Returns the expression in the expression language syntax | |
52 | **/ | |
53 | public String getExpressionString () | |
54 | { | |
55 | 0 | return "null"; |
56 | } | |
57 | ||
58 | //------------------------------------- | |
59 | } |