View Javadoc

1   /*
2    * Licensed to the Apache Software Foundation (ASF) under one or more
3    * contributor license agreements.  See the NOTICE file distributed with
4    * this work for additional information regarding copyright ownership.
5    * The ASF licenses this file to You under the Apache License, Version 2.0
6    * (the "License"); you may not use this file except in compliance with
7    * the License.  You may obtain a copy of the License at
8    * 
9    *      http://www.apache.org/licenses/LICENSE-2.0
10   * 
11   * Unless required by applicable law or agreed to in writing, software
12   * distributed under the License is distributed on an "AS IS" BASIS,
13   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14   * See the License for the specific language governing permissions and
15   * limitations under the License.
16   */
17  package org.apache.mina.integration.ognl;
18  
19  import java.util.Map;
20  import java.util.TreeMap;
21  
22  import ognl.OgnlContext;
23  import ognl.OgnlException;
24  import ognl.OgnlRuntime;
25  import ognl.PropertyAccessor;
26  
27  import org.apache.mina.core.session.IoSession;
28  
29  /**
30   * An OGNL {@link PropertyAccessor} for {@link IoSession}.
31   * 
32   * @author <a href="http://mina.apache.org">Apache MINA Project</a>
33   */
34  public class IoSessionPropertyAccessor extends AbstractPropertyAccessor {
35  
36      @Override
37      protected Object getProperty0(OgnlContext context, Object target, String name) throws OgnlException {
38          if (target instanceof IoSession && "attributes".equals(name)) {
39              Map<String, Object> attributes = new TreeMap<String, Object>();
40              IoSession s = (IoSession) target;
41              for (Object key : s.getAttributeKeys()) {
42                  Object value = s.getAttribute(key);
43                  if (value == null) {
44                      continue;
45                  }
46                  attributes.put(String.valueOf(key), value);
47              }
48              return attributes;
49          }
50  
51          return OgnlRuntime.NotFound;
52      }
53  
54      @Override
55      protected boolean hasGetProperty0(OgnlContext context, Object target, String name) throws OgnlException {
56          return target instanceof IoSession && "attributes".equals(name);
57      }
58  
59      @Override
60      protected boolean hasSetProperty0(OgnlContext context, Object target, String name) throws OgnlException {
61          return false;
62      }
63  
64      @Override
65      protected Object setProperty0(OgnlContext context, Object target, String name, Object value) throws OgnlException {
66          return OgnlRuntime.NotFound;
67      }
68  }