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1   /*
2    * Copyright (c) 2010.  The Apache Software Foundation
3    *
4    * Licensed to the Apache Software Foundation (ASF) under one
5    * or more contributor license agreements.  See the NOTICE file
6    * distributed with this work for additional information
7    * regarding copyright ownership.  The ASF licenses this file
8    * to you under the Apache License, Version 2.0 (the
9    * "License"); you may not use this file except in compliance
10   * with the License.  You may obtain a copy of the License at
11   *
12   *     http://www.apache.org/licenses/LICENSE-2.0
13   *
14   * Unless required by applicable law or agreed to in writing, software
15   * distributed under the License is distributed on an "AS IS" BASIS,
16   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
17   * See the License for the specific language governing permissions and
18   * limitations under the License.
19   */
20  
21  package org.apache.expreval.expr;
22  
23  import org.apache.expreval.expr.node.GenericValue;
24  
25  import java.util.List;
26  
27  public abstract class NotValue<T extends GenericExpression> extends DelegateStmt<T> {
28  
29      private final boolean not;
30  
31      protected NotValue(final ExpressionType type, final boolean not, GenericValue... args) {
32          super(type, args);
33          this.not = not;
34      }
35  
36      protected NotValue(final ExpressionType type, final boolean not, final List<GenericValue> args) {
37          super(type, args);
38          this.not = not;
39      }
40  
41      protected NotValue(final ExpressionType type, final boolean not, final GenericValue arg, final List<GenericValue> argList) {
42          super(type, arg, argList);
43          this.not = not;
44      }
45  
46      public boolean isNot() {
47          return this.not;
48      }
49  
50      protected String notAsString() {
51          return (this.isNot()) ? " NOT" : "";
52      }
53  }