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1   package org.apache.commons.ognl;
2   
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,
15   * software distributed under the License is distributed on an
16   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
17   * KIND, either express or implied.  See the License for the
18   * specific language governing permissions and limitations
19   * under the License.
20   */
21  
22  import org.apache.commons.ognl.enhance.UnsupportedCompilationException;
23  
24  /**
25   * $Id: ASTIn.java 1194869 2011-10-29 11:10:16Z mcucchiara $
26   * @author Luke Blanshard (blanshlu@netscape.net)
27   * @author Drew Davidson (drew@ognl.org)
28   */
29  class ASTIn
30      extends SimpleNode
31      implements NodeType
32  {
33      public ASTIn( int id )
34      {
35          super( id );
36      }
37  
38      public ASTIn( OgnlParser p, int id )
39      {
40          super( p, id );
41      }
42  
43      protected Object getValueBody( OgnlContext context, Object source )
44          throws OgnlException
45      {
46          Object v1 = children[0].getValue( context, source );
47          Object v2 = children[1].getValue( context, source );
48  
49          return OgnlOps.in( v1, v2 ) ? Boolean.TRUE : Boolean.FALSE;
50      }
51  
52      public Class getGetterClass()
53      {
54          return Boolean.TYPE;
55      }
56  
57      public Class getSetterClass()
58      {
59          return null;
60      }
61  
62      public String toGetSourceString( OgnlContext context, Object target )
63      {
64          try
65          {
66              String result = "org.apache.commons.ognl.OgnlOps.in( ($w) ";
67  
68              result +=
69                  OgnlRuntime.getChildSource( context, target, children[0] ) + ", ($w) "
70                      + OgnlRuntime.getChildSource( context, target, children[1] );
71  
72              result += ")";
73  
74              context.setCurrentType( Boolean.TYPE );
75  
76              return result;
77          }
78          catch ( NullPointerException e )
79          {
80  
81              // expected to happen in some instances
82              e.printStackTrace();
83  
84              throw new UnsupportedCompilationException( "evaluation resulted in null expression." );
85          }
86          catch ( Throwable t )
87          {
88              throw OgnlOps.castToRuntime( t );
89          }
90      }
91  
92      public String toSetSourceString( OgnlContext context, Object target )
93      {
94          throw new UnsupportedCompilationException( "Map expressions not supported as native java yet." );
95      }
96      
97      public <R, P> R accept( NodeVisitor<? extends R, ? super P> visitor, P data )
98          throws OgnlException
99      {
100         return visitor.visit( this, data );
101     }
102 }