package com.example.kucun
2.entity.data;
import android.util.Log;
import androidx.annotation.NonNull;
import com.google.gson.Gson;
import java.io.IOException;
import java.lang.reflect.ParameterizedType;
import java.lang.reflect.Type;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Iterator;
import java.util.List;
import java.util.ListIterator;
import okhttp3.Call;
import okhttp3.Callback;
import okhttp3.MediaType;
import okhttp3.OkHttpClient;
import okhttp3.Request;
import okhttp3.RequestBody;
import okhttp3.Response;
/**
* 支持数据变更自动同步的泛型集合类
* @param <T> 继承自 SynchronizableEntity 的实体类型
*/
public class SynchronizedList<T extends SynchronizableEntity> implements List<T> {
private final List<T> list = new ArrayList<>();
private final OkHttpClient client = new OkHttpClient();
private static final Gson gson = new Gson();
private static final MediaType JSON = MediaType.get("application/json; charset=utf-8");
private final Class<T> entityClass; // 类型标记
// 添加批量操作模式标志
private boolean batchMode = false;
// 属性变更监听器
private final List<PropertyChangeListener<T>> listeners = new ArrayList<>();
public SynchronizedList(Class<T> entityClass) {
Type superClass = getClass().getGenericSuperclass();
ParameterizedType type = (ParameterizedType) superClass;
Type[] typeArgs = type.getActualTypeArguments();
this.entityClass = (Class<T>) typeArgs[0];
}
// 安全的类型转换方法
private T safeCast(Object o) {
if (o != null && entityClass.isInstance(o)) {
return entityClass.cast(o);
}
return null;
}
public interface PropertyChangeListener<T> {
void onPropertyChange(T entity, String propertyName, Object oldValue, Object newValue);
}
public void addPropertyChangeListener(PropertyChangeListener<T> listener) {
listeners.add(listener);
}
public void removePropertyChangeListener(PropertyChangeListener<T> listener) {
listeners.remove(listener);
}
/**
* 同步实体到后端
* @param entity 要同步的实体
*/
private void syncEntity(T entity) {
if (batchMode) return;
String endpoint = entity.getEndpoint("add"); // 从实体类获取API端点
String json = gson.toJson(entity);
RequestBody body = RequestBody.create(json, JSON);
Request request = new Request.Builder()
.url(endpoint)
.put(body) // 使用PUT更新实体
.build();
client.newCall(request).enqueue(new Callback() {
@Override
public void onFailure(@NonNull Call call, @NonNull IOException e) {
Log.e("SynchronizedList", "同步失败: " + entity.getClass().getSimpleName(), e);
}
@Override
public void onResponse(@NonNull Call call, @NonNull Response response) {
if (!response.isSuccessful()) {
Log.e("SynchronizedList", "同步失败: " +
response.code() + " - " + response.message());
}
response.close();
}
});
}
// 添加用于批量操作的方法
public void beginBatch() {
this.batchMode = true;
}
public void endBatch() {
this.batchMode = false;
// 批量结束后触发一次全量同步
syncAllEntities();
}
private void syncAllEntities() {
for (T entity : list) {
syncEntity(entity);
}
}
/**
* 创建代理对象，用于监听属性变更
*/
private T createProxy(T original) {
if (!entityClass.isInstance(original)) {
throw new IllegalArgumentException("Invalid entity type");
}
// 这里使用动态代理模式监听setter方法调用
return (T) java.lang.reflect.Proxy.newProxyInstance(
original.getClass().getClassLoader(),
original.getClass().getInterfaces(),
(proxy, method, args) -> {
// 只拦截setter方法
if (method.getName().startsWith("set") && args.length ==
1) {
String propertyName = method.getName().substring(3);
propertyName = propertyName.substring(0,
1).toLowerCase() + propertyName.substring(
1);
// 获取旧值
Object oldValue = original.getClass()
.getMethod("get" + propertyName.substring(0,
1).toUpperCase() + propertyName.substring(
1))
.invoke(original);
// 调用原始方法
Object result = method.invoke(original, args);
// 触发监听器
for (PropertyChangeListener<T> listener : listeners) {
listener.onPropertyChange(original, propertyName, oldValue, args[0]);
}
// 自动同步到后端
syncEntity(original);
return result;
}
return method.invoke(original, args);
}
);
}
// 以下是List接口的实现
@Override
public int size() {
return list.size();
}
@Override
public boolean isEmpty() {
return list.isEmpty();
}
@Override
public boolean contains(Object o) {
return list.contains(o);
}
@NonNull
@Override
public Iterator<T> iterator() {
return list.iterator();
}
@NonNull
@Override
public Object[] toArray() {
return list.toArray();
}
@NonNull
@Override
public <T
1> T
1[] toArray(@NonNull T
1[] a) {
return list.toArray(a);
}
@Override
public boolean add(T t) {
T proxy = createProxy(t);
boolean result = list.add(proxy);
if (!batchMode) {
syncEntity(proxy);
}
return result; // 添加时创建代理
}
@Override
public boolean remove(Object o) {
T entity = safeCast(o);
if (entity != null) {
syncEntity((T) entity); // 删除前同步
}
return list.remove(o);
}
@Override
public boolean containsAll(@NonNull Collection<?> c) {
return list.containsAll(c);
}
@Override
public boolean addAll(@NonNull Collection<? extends T> c) {
boolean modified = false;
for (T t : c) {
modified |= add(t);
}
return modified;
}
@Override
public boolean addAll(int index, @NonNull Collection<? extends T> c) {
for (T t : c) {
add(index++, t);
}
return true;
}
@Override
public boolean removeAll(@NonNull Collection<?> c) {
for (Object o : c) {
T entity = safeCast(o);
if (entity != null) {
syncEntity(entity);
}
}
return list.removeAll(c);
}
@Override
public boolean retainAll(@NonNull Collection<?> c) {
List<T> toRemove = new ArrayList<>();
for (T t : list) {
if (!c.contains(t)) {
toRemove.add(t);
}
}
// 使用安全转换
for (T entity : toRemove) {
syncEntity(entity);
}
return list.retainAll(c);
}
@Override
public void clear() {
for (T t : list) {
syncEntity(t); // 清空前同步
}
list.clear();
}
@Override
public T get(int index) {
return list.get(index);
}
@Override
public T set(int index, T element) {
T old = list.set(index, createProxy(element));
if (old != null) {
syncEntity(old); // 替换旧元素前同步
}
return old;
}
@Override
public void add(int index, T element) {
list.add(index, createProxy(element));
}
@Override
public T remove(int index) {
T removed = list.remove(index);
if (removed != null) {
syncEntity(removed); // 删除前同步
}
return removed;
}
@Override
public int indexOf(Object o) {
return list.indexOf(o);
}
@Override
public int lastIndexOf(Object o) {
return list.lastIndexOf(o);
}
@NonNull
@Override
public ListIterator<T> listIterator() {
return list.listIterator();
}
@NonNull
@Override
public ListIterator<T> listIterator(int index) {
return list.listIterator(index);
}
@NonNull
@Override
public List<T> subList(int fromIndex, int toIndex) {
return list.subList(fromIndex, toIndex);
}
}package com.example.kucun
2.entity.data;
import android.content.Context;
import android.util.Log;
import com.example.kucun
2.entity.*;
import com.example.kucun
2.function.MyAppFnction;
import com.google.gson.Gson;
import com.google.gson.reflect.TypeToken;
import java.io.IOException;
import java.lang.reflect.Type;
import java.util.*;
import okhttp3.Call;
import okhttp3.Callback;
import okhttp3.OkHttpClient;
import okhttp3.Request;
import okhttp3.Response;
public class Data {
// 数据集合声明（保持原有属性名不变）
public static SynchronizedList<Bancai> bancais = new SynchronizedList<>(Bancai.class);
public static SynchronizedList<Caizhi> caizhis = new SynchronizedList<>(Caizhi.class);
public static SynchronizedList<Mupi> mupis = new SynchronizedList<>(Mupi.class);
public static SynchronizedList<Chanpin> chanpins = new SynchronizedList<>(Chanpin.class);
public static SynchronizedList<Chanpin_Zujian> chanpinZujians = new SynchronizedList<>(Chanpin_Zujian.class);
public static SynchronizedList<Dingdan> dingdans = new SynchronizedList<>(Dingdan.class);
public static SynchronizedList<Dingdan_Chanpin> dingdanChanpins = new SynchronizedList<>(Dingdan_Chanpin.class);
public static SynchronizedList<Dingdan_Bancai> dingdanBancais = new SynchronizedList<>(Dingdan_Bancai.class);
public static SynchronizedList<Kucun> kucuns = new SynchronizedList<>(Kucun.class);
public static SynchronizedList<Zujian> zujians = new SynchronizedList<>(Zujian.class);
public static SynchronizedList<User> users = new SynchronizedList<>(User.class);
public static SynchronizedList<Jinhuo> jinhuoList = new SynchronizedList<>(Jinhuo.class);
private static final Gson gson = new Gson();
private static final OkHttpClient client = new OkHttpClient();
private static final String TAG = "DataLoader";
// 加载所有数据的方法
public static void loadAllData(Context context, LoadDataCallback callback) {
// 开始批量模式
for (SynchronizedList<?> list : getAllSyncLists()) {
list.beginBatch();
}
String url = MyAppFnction.getStringResource("String", "url") +
MyAppFnction.getStringResource("String", "url_all");
Request request = new Request.Builder()
.url(url)
.build();
client.newCall(request).enqueue(new Callback() {
@Override
public void onFailure(Call call, IOException e) {
Log.e(TAG, "Failed to load data", e);
if (callback != null) callback.onFailure();
}
@Override
public void onResponse(Call call, Response response) throws IOException {
parseAndAssignData(response.body().string(), context);
// 结束批量模式（会触发一次全量同步）
for (SynchronizedList<?> list : getAllSyncLists()) {
list.endBatch();
}
if (callback != null) callback.onSuccess();
}
});
}
// 获取所有同步列表的方法
private static List<SynchronizedList<?>> getAllSyncLists() {
return Arrays.asList(bancais, caizhis, mupis, chanpins,
chanpinZujians, dingdans, dingdanChanpins,
dingdanBancais, kucuns, zujians, users, jinhuoList);
}
// 解析并赋值数据
private static void parseAndAssignData(String jsonData, Context context, LoadDataCallback callback) {
// 创建包含所有数据类型的TypeToken
Type informationType = new TypeToken<Information<AllDataResponse>>(){}.getType();
Information<AllDataResponse> information = gson.fromJson(jsonData, informationType);
if (information == null || information.getData() == null || information.getStatus() !=
200) {
Log.e(TAG, "Invalid response data");
if (callback != null) callback.onFailure();
return;
}
AllDataResponse allData = information.getData();
// 赋值到对应的列表（使用安全方法保持已有引用）
updateList(bancais, allData.bancais);
updateList(caizhis, allData.caizhis);
updateList(mupis, allData.mupis);
updateList(chanpins, allData.chanpins);
updateList(chanpinZujians, allData.chanpin_zujians);
updateList(dingdans, allData.dingdans);
updateList(dingdanChanpins, allData.dingdan_chanpins);
updateList(dingdanBancais, allData.dingdan_bancais);
updateList(kucuns, allData.kucuns);
updateList(zujians, allData.zujians);
updateList(users, allData.users);
updateList(jinhuoList, allData.jinhuos);
resolveReferences();
if (callback != null) callback.onSuccess();
}
// 更新列表内容但保持对象引用不变
private static <T> void updateList(List<T> existingList, List<T> newList) {
if (newList == null) return;
existingList.clear();
for (T item : newList) {
existingList.add(item); // 会被包装成代理对象
}
}
// 解析对象间的引用关系（使用ID关联）
private static void resolveReferences() {
// 创建ID到对象的映射
Map<Integer, Bancai> bancaiMap = createIdMap(bancais);
Map<Integer, Caizhi> caizhiMap = createIdMap(caizhis);
Map<Integer, Mupi> mupiMap = createIdMap(mupis);
Map<Integer, Chanpin> chanpinMap = createIdMap(chanpins);
Map<Integer, Zujian> zujianMap = createIdMap(zujians);
Map<Integer, Dingdan> dingdanMap = createIdMap(dingdans);
Map<Integer, Kucun> kucunMap = createIdMap(kucuns);
// 解析Bancai引用
for (Bancai banca : bancais) {
Bancai bancai = bancais.getOriginal(banca);
if (bancai.getCaizhi() != null) {
bancai.setCaizhi(caizhiMap.get(bancai.getCaizhi().getId()));
}
if (bancai.getMupi
1() != null) {
bancai.setMupi
1(mupiMap.get(bancai.getMupi
1().getId()));
}
if (bancai.getMupi
2() != null) {
bancai.setMupi
2(mupiMap.get(bancai.getMupi
2().getId()));
}
}
// 解析Kucun引用
for (Kucun kucu : kucuns) {
Kucun kucun = kucuns.getOriginal(kucu);
if (kucun.getBancai() != null) {
kucun.setBancai(bancaiMap.get(kucun.getBancai().getId()));
}
}
// 解析订单相关的嵌套对象
for (Dingdan_Chanpin dca : dingdanChanpins) {
Dingdan_Chanpin dc = dingdanChanpins.getOriginal(dca);
if (dc.getDingdan() != null) {
dc.setDingdan(dingdanMap.get(dc.getDingdan().getId()));
}
if (dc.getChanpin() != null) {
dc.setChanpin(chanpinMap.get(dc.getChanpin().getId()));
}
}
// 解析产品相关的嵌套对象
for (Chanpin_Zujian czz : chanpinZujians) {
Chanpin_Zujian cz = chanpinZujians.getOriginal(czz);
if (cz.getChanpin() != null) {
cz.setChanpin(chanpinMap.get(cz.getChanpin().getId()));
}
if (cz.getZujian() != null) {
cz.setZujian(zujianMap.get(cz.getZujian().getId()));
}
if (cz.getBancai() != null) {
cz.setBancai(bancaiMap.get(cz.getBancai().getId()));
}
}
// 解析库存关联
for (Kucun ks : kucuns) {
Kucun k = kucuns.getOriginal(ks);
if (k.getBancai() != null) {
k.setBancai(bancaiMap.get(k.getBancai().getId()));
}
}
}
// 添加方法来获取原始对象
@SuppressWarnings("unchecked")
public T getOriginal(T proxy) {
if (proxy instanceof java.lang.reflect.Proxy) {
java.lang.reflect.InvocationHandler handler = java.lang.reflect.Proxy.getInvocationHandler(proxy);
if (handler instanceof EntityProxyHandler) {
return ((EntityProxyHandler<T>) handler).getOriginal();
}
}
return proxy;
}
// 创建ID到对象的映射
private static <T extends EntityClassGrassrootsid> Map<Integer, T> createIdMap(List<T> list) {
Map<Integer, T> map = new HashMap<>();
for (T item : list) {
map.put(item.getId(), item);
}
return map;
}
// 回调接口
public interface LoadDataCallback {
void onSuccess();
void onFailure();
}
// 内部类用于解析JSON响应
public static class AllDataResponse {
public List<Bancai> bancais;
public List<Caizhi> caizhis;
public List<Mupi> mupis;
public List<Chanpin> chanpins;
public List<Chanpin_Zujian> chanpin_zujians;
public List<Dingdan> dingdans;
public List<Dingdan_Chanpin> dingdan_chanpins;
public List<Dingdan_Bancai> dingdan_bancais;
public List<Kucun> kucuns;
public List<Zujian> zujians;
public List<User> users;
public List<Jinhuo> jinhuos;
}
}
扫一扫
1万+
被折叠的 条评论
为什么被折叠?
到【灌水乐园】发言
