/*
* 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>();
}