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| org.apache.commons.jexl.parser.ASTEQNode | 
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| 1 |  /* | |
| 2 |   * Copyright 2002-2006 The Apache Software Foundation. | |
| 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 org.apache.commons.jexl.parser; | |
| 17 | ||
| 18 |  import org.apache.commons.jexl.JexlContext; | |
| 19 |  import org.apache.commons.jexl.util.Coercion; | |
| 20 | ||
| 21 |  /** | |
| 22 |   * Represents equality between values. | |
| 23 |   *  | |
| 24 |   * If the values are of the same class, .equals() is used. | |
| 25 |   *  | |
| 26 |   * If either value is a {@link Float} or {@link Double} (but both are not the same class), | |
| 27 |   * the values are coerced to {@link Double}s before comparing. | |
| 28 |   *  | |
| 29 |   * If either value is a {@link Number} or {@link Character} (but both are not the same class), | |
| 30 |   * the values are coerced to {@link Long}s before comparing. | |
| 31 |   * | |
| 32 |   * If either value is a {@link Boolean} (but both are not the same class), | |
| 33 |   * the values are coerced to {@link Boolean}s before comparing. | |
| 34 |   *  | |
| 35 |   * If either value is a {@link String} (but both are not the same class), | |
| 36 |   * toString() is called on both before comparing. | |
| 37 |   *  | |
| 38 |   * Otherwise left.equals(right) is returned. | |
| 39 |   *  | |
| 40 |   * @author <a href="mailto:geirm@apache.org">Geir Magnusson Jr.</a> | |
| 41 |   * @version $Id: ASTEQNode.java 398190 2006-04-29 16:04:10Z dion $ | |
| 42 |   */ | |
| 43 | public class ASTEQNode extends SimpleNode { | |
| 44 |      /** | |
| 45 |       * Create the node given an id. | |
| 46 |       *  | |
| 47 |       * @param id node id. | |
| 48 |       */ | |
| 49 | public ASTEQNode(int id) { | |
| 50 | 0 |          super(id); | 
| 51 | 0 |      } | 
| 52 | ||
| 53 |      /** | |
| 54 |       * Create a node with the given parser and id. | |
| 55 |       *  | |
| 56 |       * @param p a parser. | |
| 57 |       * @param id node id. | |
| 58 |       */ | |
| 59 | public ASTEQNode(Parser p, int id) { | |
| 60 | 55 |          super(p, id); | 
| 61 | 55 | } | 
| 62 | ||
| 63 |      /** {@inheritDoc} */ | |
| 64 |      public Object jjtAccept(ParserVisitor visitor, Object data) { | |
| 65 | 0 |          return visitor.visit(this, data); | 
| 66 | } | |
| 67 | ||
| 68 |      /** {@inheritDoc} */ | |
| 69 |      public Object value(JexlContext pc) throws Exception { | |
| 70 | 53 | Object left = ((SimpleNode) jjtGetChild(0)).value(pc); | 
| 71 | 53 | Object right = ((SimpleNode) jjtGetChild(1)).value(pc); | 
| 72 | ||
| 73 | 53 | if (left == null && right == class="keyword">null) { | 
| 74 |              /* | |
| 75 |               * if both are null L == R | |
| 76 |               */ | |
| 77 | 1 |              return Boolean.TRUE; | 
| 78 | 52 | } else if (left == null || right == class="keyword">null) { | 
| 79 |              /* | |
| 80 |               * we know both aren't null, therefore L != R | |
| 81 |               */ | |
| 82 | 4 |              return Boolean.FALSE; | 
| 83 | 48 | } else if (left.getClass().equals(right.getClass())) { | 
| 84 | 38 |              return left.equals(right) ? Boolean.TRUE : Boolean.FALSE; | 
| 85 | 10 | } else if (left instanceof Float || left instanceof Double | 
| 86 |                  || right instanceof Float || right instanceof Double) { | |
| 87 | 4 | Double l = Coercion.coerceDouble(left); | 
| 88 | 4 | Double r = Coercion.coerceDouble(right); | 
| 89 | ||
| 90 | 4 |              return l.equals(r) ? Boolean.TRUE : Boolean.FALSE; | 
| 91 | 6 | } else if (left instanceof Number || right instanceof Number | 
| 92 |                  || left instanceof Character || right instanceof Character) { | |
| 93 | 2 |              return Coercion.coerceLong(left).equals(Coercion.coerceLong(right)) ? Boolean.TRUE | 
| 94 | : Boolean.FALSE; | |
| 95 | 4 | } else if (left instanceof Boolean || right instanceof Boolean) { | 
| 96 | 2 |              return Coercion.coerceBoolean(left).equals( | 
| 97 | Coercion.coerceBoolean(right)) ? Boolean.TRUE | |
| 98 | : Boolean.FALSE; | |
| 99 | 2 | } else if (left instanceof java.lang.String || right instanceof String) { | 
| 100 | 1 |              return left.toString().equals(right.toString()) ? Boolean.TRUE | 
| 101 | : Boolean.FALSE; | |
| 102 | } | |
| 103 | ||
| 104 | 1 |          return left.equals(right) ? Boolean.TRUE : Boolean.FALSE; | 
| 105 | } | |
| 106 | } | 
| This report is generated by jcoverage, Maven and Maven JCoverage Plugin. |