Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||
OrOperator |
|
| 1.4;1.4 |
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 | import javax.servlet.jsp.el.ELException; | |
20 | ||
21 | /** | |
22 | * | |
23 | * <p>The implementation of the or operator | |
24 | * | |
25 | * @author Nathan Abramson - Art Technology Group | |
26 | * @version $Change: 181177 $$DateTime: 2001/06/26 08:45:09 $$Author: bayard $ | |
27 | **/ | |
28 | ||
29 | public class OrOperator | |
30 | extends BinaryOperator | |
31 | { | |
32 | //------------------------------------- | |
33 | // Singleton | |
34 | //------------------------------------- | |
35 | ||
36 | 0 | public static final OrOperator SINGLETON = |
37 | new OrOperator (); | |
38 | ||
39 | //------------------------------------- | |
40 | /** | |
41 | * | |
42 | * Constructor | |
43 | **/ | |
44 | public OrOperator () | |
45 | 0 | { |
46 | 0 | } |
47 | ||
48 | //------------------------------------- | |
49 | // Expression methods | |
50 | //------------------------------------- | |
51 | /** | |
52 | * | |
53 | * Returns the symbol representing the operator | |
54 | **/ | |
55 | public String getOperatorSymbol () | |
56 | { | |
57 | 0 | return "or"; |
58 | } | |
59 | ||
60 | //------------------------------------- | |
61 | /** | |
62 | * | |
63 | * Applies the operator to the given value | |
64 | **/ | |
65 | public Object apply (Object pLeft, Object pRight) | |
66 | throws ELException | |
67 | { | |
68 | // Coerce the values to booleans | |
69 | 0 | boolean left = |
70 | Coercions.coerceToBoolean (pLeft).booleanValue (); | |
71 | 0 | boolean right = |
72 | Coercions.coerceToBoolean (pRight).booleanValue (); | |
73 | ||
74 | 0 | return PrimitiveObjects.getBoolean (left || right); |
75 | } | |
76 | ||
77 | //------------------------------------- | |
78 | /** | |
79 | * | |
80 | * Returns true if evaluation is necessary given the specified Left | |
81 | * value. The And/OrOperators make use of this | |
82 | **/ | |
83 | public boolean shouldEvaluate (Object pLeft) | |
84 | { | |
85 | 0 | return |
86 | (pLeft instanceof Boolean) && | |
87 | ((Boolean) pLeft).booleanValue () == false; | |
88 | } | |
89 | ||
90 | //------------------------------------- | |
91 | /** | |
92 | * | |
93 | * Returns true if the operator expects its arguments to be coerced | |
94 | * to Booleans. The And/Or operators set this to true. | |
95 | **/ | |
96 | public boolean shouldCoerceToBoolean () | |
97 | { | |
98 | 0 | return true; |
99 | } | |
100 | ||
101 | //------------------------------------- | |
102 | } |