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1   /*
2    * Copyright 2002-2004 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.jxpath.ri.compiler;
17  
18  import org.apache.commons.jxpath.ri.EvalContext;
19  
20  /***
21   * Implementation of Expression for the operation "=".
22   *
23   * @author Dmitri Plotnikov
24   * @version $Revision: 1.3 $ $Date: 2004/02/29 14:17:39 $
25   */
26  public class CoreOperationEqual extends CoreOperationCompare {
27  
28      public CoreOperationEqual(Expression arg1, Expression arg2) {
29          super(arg1, arg2);
30      }
31  
32      public Object computeValue(EvalContext context) {
33          return equal(context, args[0], args[1]) ? Boolean.TRUE : Boolean.FALSE;
34      }
35      
36      protected int getPrecedence() {
37          return 2;
38      }
39  
40      protected boolean isSymmetric() {
41          return true;
42      }
43      
44      public String getSymbol() {
45          return "=";
46      }
47  }