content: /*
   *  Copyright Beijing 58 Information Technology Co.,Ltd.
   *
   *  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 com.bj58.spat.gaea.serializer.serializer;
  
  import com.bj58.spat.gaea.serializer.component.GaeaInStream;
  import com.bj58.spat.gaea.serializer.component.GaeaOutStream;
  import com.bj58.spat.gaea.serializer.component.annotation.GaeaMember;
  import com.bj58.spat.gaea.serializer.component.annotation.GaeaNotMember;
  import com.bj58.spat.gaea.serializer.component.annotation.GaeaSerializable;
  import com.bj58.spat.gaea.serializer.component.exception.ClassNoMatchException;
  import com.bj58.spat.gaea.serializer.component.exception.DisallowedSerializeException;
  import com.bj58.spat.gaea.serializer.component.helper.StrHelper;
  import com.bj58.spat.gaea.serializer.component.helper.TypeHelper;
  import com.bj58.spat.gaea.serializer.serializer.IGaeaSerializer;
  import com.bj58.spat.gaea.serializer.serializer.SerializerBase;
  import com.bj58.spat.gaea.serializer.serializer.TypeInfo;
  
  import java.lang.reflect.Field;
  import java.util.ArrayList;
  import java.util.HashMap;
  import java.util.List;
  import java.util.Map;
  
  /**
   * ObjectSerializer
   * 
   * @author Service Platform Architecture Team (spat@58.com)
   */
  class ObjectSerializer extends SerializerBase {
  
      @Override
      public void WriteObject(Object obj, GaeaOutStream outStream) throws Exception {
          if (obj == null) {
              SerializerFactory.GetSerializer(null).WriteObject(null, outStream);
              return;
          }
          Class<?> type = obj.getClass();
          TypeInfo typeInfo = GetTypeInfo(type);
          outStream.WriteInt32(typeInfo.TypeId);
          if (outStream.WriteRef(obj)) {
              return;
          }
          for (Field f : typeInfo.Fields) {
              Object value = f.get(obj);
              if (value == null) {
                  SerializerFactory.GetSerializer(null).WriteObject(null, outStream);
              } else {
                  if (value instanceof IGaeaSerializer) {
                      ((IGaeaSerializer) value).Serialize(outStream);
                  } else {
                      Class valueType = value.getClass();
                      outStream.WriteInt32(TypeHelper.GetTypeId(valueType));
                      SerializerFactory.GetSerializer(valueType).WriteObject(value, outStream);
                  }
              }
          }
      }
  
      @Override
      public Object ReadObject(GaeaInStream inStream, Class defType) throws Exception {
          int typeId = inStream.ReadInt32();
          if (typeId == 0) {
              return null;
          }
          Class type = TypeHelper.GetType(typeId);
          if (type == null) {
              throw new ClassNotFoundException("Cannot find class with typId,target class:" + defType.getName() + ",typeId:" + typeId);
          }
          if (!defType.isAssignableFrom(type) && defType != type) {
              throw new ClassNoMatchException("Class not match!class:" + type.getName() + ",require " + defType.getName());
          }
          byte isRef = (byte) inStream.read();
          int hashcode = inStream.ReadInt32();
          if (isRef > 0) {
              return inStream.GetRef(hashcode);
          }
          TypeInfo typeInfo = GetTypeInfo(type);
          Object obj = type.newInstance();
          for (Field f : typeInfo.Fields) {
              int ptypeId = inStream.ReadInt32();
              if (ptypeId == 0) {
                  f.set(obj, null);
                  continue;
              }
              Class ptype = TypeHelper.GetType(ptypeId);
              if (ptype == null) {
                  throw new ClassNotFoundException("Cannot find class with typId,target class: " + f.getType().getName() + ",typeId:" + ptypeId);
              }
              if (IGaeaSerializer.class.isAssignableFrom(ptype)) {
                  IGaeaSerializer value = (IGaeaSerializer) ptype.newInstance();
                  value.Derialize(inStream);
                  f.set(obj, value);
              } else {
                  Object value = SerializerFactory.GetSerializer(ptype).ReadObject(inStream, f.getType());
                  f.set(obj, value);
              }
          }
          inStream.SetRef(hashcode, obj);
          return obj;
      }
      private static Map<Class<?>, TypeInfo> TypeInfoMap = new HashMap<Class<?>, TypeInfo>();
  
      private TypeInfo GetTypeInfo(Class<?> type) throws ClassNotFoundException, DisallowedSerializeException {
          if (TypeInfoMap.containsKey(type)) {
              return TypeInfoMap.get(type);
          }
          GaeaSerializable cAnn = type.getAnnotation(GaeaSerializable.class);
          if (cAnn == null) {
              throw new DisallowedSerializeException();
          }
          int typeId = TypeHelper.GetTypeId(type);
          TypeInfo typeInfo = new TypeInfo(typeId);
          ArrayList<Field> fields = new ArrayList<Field>();
          Class temType = type;
          while (true) {
              Field[] fs = temType.getDeclaredFields();
              for (Field f : fs) {
                  fields.add(f);
              }
              Class superClass = temType.getSuperclass();
              if (superClass == null) {
                  break;
              }
              temType = superClass;
          }
  
          Map<Integer, Field> mapFildes = new HashMap<Integer, Field>();
          List<Integer> indexIds = new ArrayList<Integer>();
          if (cAnn.defaultAll()) {
              for (Field f : fields) {
                  GaeaNotMember ann = f.getAnnotation(GaeaNotMember.class);
                  if (ann != null) {
                      continue;
                  }
                  f.setAccessible(true);
                  Integer indexId = StrHelper.GetHashcode(f.getName().toLowerCase());
                  mapFildes.put(indexId, f);
                  indexIds.add(indexId);
              }
          } else {
              for (Field f : fields) {
                  GaeaMember ann = f.getAnnotation(GaeaMember.class);
                  if (ann == null) {
                      continue;
                  }
                  f.setAccessible(true);
                  String name = ann.name();
  
                  if (ann.name() == null || ann.name().length() == 0) {
                      name = f.getName();
                  }
                  /*
                   * 2011-6-28修改，支持服务器端增加字段客户端不需要更新功能
                   */
                  Integer indexId = 0;
                  if(name.startsWith("#")){
                      indexId = Integer.MAX_VALUE;
                  }else{
                      indexId = StrHelper.GetHashcode(name.toLowerCase());
                  }
                  mapFildes.put(indexId, f);
                  indexIds.add(indexId);
              }
          }
          int len = indexIds.size();
          for (int i = 0; i < len; i++) {
              for (int j = i + 1; j < len; j++) {
                  Integer item = indexIds.get(j);
                  if (indexIds.get(i) > item) {
                      indexIds.set(j, indexIds.get(i));
                      indexIds.set(i, item);
                  }
              }
          }
          for (Integer index : indexIds) {
              typeInfo.Fields.add(mapFildes.get(index));
          }
          TypeInfoMap.put(type, typeInfo);
          return typeInfo;
      }
  }
  
  class TypeInfo {
  
      public int TypeId;
  
      public TypeInfo(int typeId) {
          TypeId = typeId;
      }
      public List<Field> Fields = new ArrayList<Field>();
  }
  