| Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||
| AndOperator |
|
| 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 and 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 AndOperator | |
| 30 | extends BinaryOperator | |
| 31 | { | |
| 32 | //------------------------------------- | |
| 33 | // Singleton | |
| 34 | //------------------------------------- | |
| 35 | ||
| 36 | 0 | public static final AndOperator SINGLETON = |
| 37 | new AndOperator (); | |
| 38 | ||
| 39 | //------------------------------------- | |
| 40 | /** | |
| 41 | * | |
| 42 | * Constructor | |
| 43 | **/ | |
| 44 | public AndOperator () | |
| 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 "and"; |
| 58 | } | |
| 59 | ||
| 60 | //------------------------------------- | |
| 61 | /** | |
| 62 | * | |
| 63 | * Applies the operator to the given value | |
| 64 | **/ | |
| 65 | public Object apply (Object pLeft, | |
| 66 | Object pRight) | |
| 67 | throws ELException | |
| 68 | { | |
| 69 | // Coerce the values to booleans | |
| 70 | 0 | boolean left = |
| 71 | Coercions.coerceToBoolean (pLeft).booleanValue (); | |
| 72 | 0 | boolean right = |
| 73 | Coercions.coerceToBoolean (pRight).booleanValue (); | |
| 74 | ||
| 75 | 0 | return PrimitiveObjects.getBoolean (left && right); |
| 76 | } | |
| 77 | ||
| 78 | //------------------------------------- | |
| 79 | /** | |
| 80 | * | |
| 81 | * Returns true if evaluation is necessary given the specified Left | |
| 82 | * value. The And/OrOperators make use of this | |
| 83 | **/ | |
| 84 | public boolean shouldEvaluate (Object pLeft) | |
| 85 | { | |
| 86 | 0 | return |
| 87 | (pLeft instanceof Boolean) && | |
| 88 | ((Boolean) pLeft).booleanValue () == true; | |
| 89 | } | |
| 90 | ||
| 91 | //------------------------------------- | |
| 92 | /** | |
| 93 | * | |
| 94 | * Returns true if the operator expects its arguments to be coerced | |
| 95 | * to Booleans. The And/Or operators set this to true. | |
| 96 | **/ | |
| 97 | public boolean shouldCoerceToBoolean () | |
| 98 | { | |
| 99 | 0 | return true; |
| 100 | } | |
| 101 | ||
| 102 | //------------------------------------- | |
| 103 | } |