NotQueryExp


1   /*
2    * @(#)NotQueryExp.java 4.17 03/12/19
3    * 
4    * Copyright 2004 Sun Microsystems, Inc. All rights reserved.
5    * SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
6    */
7   
8   package javax.management;
9   
10  
11  /**
12   * This class is used by the query-building mechanism to represent negations
13   * of relational expressions.
14   * @serial include
15   *
16   * @since 1.5
17   */
18  class NotQueryExp extends QueryEval   implements QueryExp   { 
19  
20  
21      /* Serial version */
22      private static final long serialVersionUID = 5269643775896723397L;
23  
24      /**
25       * @serial The negated {@link QueryExp}
26       */
27      private QueryExp   exp;
28      
29  
30      /**
31       * Basic Constructor.
32       */   
33      public NotQueryExp() { 
34      } 
35      
36      /**
37       * Creates a new NotQueryExp for negating the specified QueryExp.
38       */
39      public NotQueryExp(QueryExp   q) { 
40      exp = q;
41      } 
42  
43  
44      /**
45       * Returns the negated query expression of the query.
46       */   
47      public QueryExp   getNegatedExp()  { 
48      return exp;
49      } 
50  
51      /**
52       * Applies the NotQueryExp on a MBean.
53       *
54       * @param name The name of the MBean on which the NotQueryExp will be applied.
55       *
56       * @return  True if the query was successfully applied to the MBean, false otherwise.
57       *     
58       * @exception BadStringOperationException
59       * @exception BadBinaryOpValueExpException
60       * @exception BadAttributeValueExpException 
61       * @exception InvalidApplicationException
62       */
63      public boolean apply(ObjectName   name) throws BadStringOperationException  , BadBinaryOpValueExpException  ,
64      BadAttributeValueExpException  , InvalidApplicationException    { 
65      return exp.apply(name) == false;   
66      } 
67  
68      /**
69       * Returns the string representing the object.
70       */
71      public String   toString()  { 
72      return "not (" + exp + ")";
73      } 
74  
75   }
76
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