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1   /*
2    * $Id: OgnlTool.java 651946 2008-04-27 13:41:38Z apetrelli $
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  package org.apache.struts2.views.jsp.ui;
23  
24  import ognl.Ognl;
25  import ognl.OgnlException;
26  
27  import com.opensymphony.xwork2.inject.Inject;
28  import com.opensymphony.xwork2.ognl.OgnlUtil;
29  
30  
31  /***
32   */
33  public class OgnlTool {
34  
35      private OgnlUtil ognlUtil;
36      
37      public OgnlTool() {
38      }
39      
40      @Inject
41      public void setOgnlUtil(OgnlUtil ognlUtil) {
42          this.ognlUtil = ognlUtil;
43      }
44      
45      
46  
47  
48      public Object findValue(String expr, Object context) {
49          try {
50              return Ognl.getValue(ognlUtil.compile(expr), context);
51          } catch (OgnlException e) {
52              return null;
53          }
54      }
55  }