/*
 * Copyright (c) 2001-2008 Caucho Technology, Inc.  All rights reserved.
 *
 * The Apache Software License, Version 1.1
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *
 * 3. The end-user documentation included with the redistribution, if
 *    any, must include the following acknowlegement:
 *       "This product includes software developed by the
 *        Caucho Technology (http://www.caucho.com/)."
 *    Alternately, this acknowlegement may appear in the software itself,
 *    if and wherever such third-party acknowlegements normally appear.
 *
 * 4. The names "Burlap", "Resin", and "Caucho" must not be used to
 *    endorse or promote products derived from this software without prior
 *    written permission. For written permission, please contact
 *    info@caucho.com.
 *
 * 5. Products derived from this software may not be called "Resin"
 *    nor may "Resin" appear in their names without prior written
 *    permission of Caucho Technology.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED.  IN NO EVENT SHALL CAUCHO TECHNOLOGY OR ITS CONTRIBUTORS
 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
 * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
 * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
 * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
 * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * @author Scott Ferguson
 */

package com.caucho.hessian.io;

import java.io.IOException;
import java.lang.reflect.Constructor;
import java.lang.reflect.Field;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.lang.reflect.Modifier;
import java.lang.reflect.Proxy;
import java.util.HashMap;

import java.util.logging.*;

import com.caucho.hessian.HessianException;

/**
 * Deserializing a java annotation for known object types.
 */
public class AnnotationDeserializer extends AbstractMapDeserializer {
  private static final Logger log
    = Logger.getLogger(AnnotationDeserializer.class.getName());
  
  private Class _annType;

  public AnnotationDeserializer(Class annType)
  {
    _annType = annType;
  }

  public Class getType()
  {
    return _annType;
  }
    
  public Object readMap(AbstractHessianInput in)
    throws IOException
  {
    try {
      int ref = in.addRef(null);

      HashMap<String,Object> valueMap = new HashMap<String,Object>(8);

      while (! in.isEnd()) {
        String key = in.readString();
        Object value = in.readObject();

        valueMap.put(key, value);
      }
      
      in.readMapEnd();

      return Proxy.newProxyInstance(_annType.getClassLoader(),
                                    new Class[] { _annType },
                                    new AnnotationInvocationHandler(_annType, valueMap));
      
    } catch (IOException e) {
      throw e;
    } catch (Exception e) {
      throw new IOExceptionWrapper(e);
    }
  }
    
  public Object readObject(AbstractHessianInput in,
                           Object []fields)
    throws IOException
  {
    String []fieldNames = (String []) fields;
    
    try {
      in.addRef(null);

      HashMap<String,Object> valueMap = new HashMap<String,Object>(8);
      
      for (int i = 0; i < fieldNames.length; i++) {
        String name = fieldNames[i];

        valueMap.put(name, in.readObject());
      }

      return Proxy.newProxyInstance(_annType.getClassLoader(),
                                    new Class[] { _annType },
                                    new AnnotationInvocationHandler(_annType, valueMap));
      
    } catch (IOException e) {
      throw e;
    } catch (Exception e) {
      throw new HessianException(_annType.getName() + ":" + e, e);
    }
  }
}
