/*
    * Licensed to the Apache Software Foundation (ASF) under one or more
    * contributor license agreements.  See the NOTICE file distributed with
    * this work for additional information regarding copyright ownership.
    * The ASF licenses this file to You under the Apache License, Version 2.0
    * (the "License"); you may not use this file except in compliance with
    * the License.  You may obtain a copy of the License at
    * 
    *      http://www.apache.org/licenses/LICENSE-2.0
   * 
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  package org.apache.mina.integration.ognl;
  
  import java.util.Map;
  import java.util.TreeMap;
  
  import ognl.OgnlContext;
  import ognl.OgnlException;
  import ognl.OgnlRuntime;
  import ognl.PropertyAccessor;
  
  import org.apache.mina.core.session.IoSession;
  
  /**
   * An OGNL {@link PropertyAccessor} for {@link IoSession}.
   * 
   * @author <a href="http://mina.apache.org">Apache MINA Project</a>
   */
  public class IoSessionPropertyAccessor extends AbstractPropertyAccessor {
  
      @Override
      protected Object getProperty0(OgnlContext context, Object target, String name) throws OgnlException {
          if (target instanceof IoSession && "attributes".equals(name)) {
              Map<String, Object> attributes = new TreeMap<>();
              IoSession="../../../../../org/apache/mina/core/session/IoSession.html#IoSession">IoSession s = (IoSession) target;
              for (Object key : s.getAttributeKeys()) {
                  Object value = s.getAttribute(key);
                  if (value == null) {
                      continue;
                  }
                  attributes.put(String.valueOf(key), value);
              }
              return attributes;
          }
  
          return OgnlRuntime.NotFound;
      }
  
      @Override
      protected boolean hasGetProperty0(OgnlContext context, Object target, String name) throws OgnlException {
          return target instanceof IoSession && "attributes".equals(name);
      }
  
      @Override
      protected boolean hasSetProperty0(OgnlContext context, Object target, String name) throws OgnlException {
          return false;
      }
  
      @Override
      protected Object setProperty0(OgnlContext context, Object target, String name, Object value) throws OgnlException {
          return OgnlRuntime.NotFound;
      }
  }