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@ -13,7 +13,6 @@
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package net.micode.notes.gtask.remote;
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import android.app.Activity;
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@ -48,72 +47,75 @@ import java.util.Iterator;
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import java.util.Map;
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public class GTaskManager {
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private static final String TAG = GTaskManager.class.getSimpleName();
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public static final int STATE_SUCCESS = 0;
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public static final int STATE_NETWORK_ERROR = 1;
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public static final int STATE_INTERNAL_ERROR = 2;
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public static final int STATE_SYNC_IN_PROGRESS = 3;
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public static final int STATE_SYNC_CANCELLED = 4;
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private static GTaskManager mInstance = null;
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private Activity mActivity;
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private Context mContext;
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private ContentResolver mContentResolver;
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private boolean mSyncing;
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private boolean mCancelled;
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private HashMap<String, TaskList> mGTaskListHashMap;
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private HashMap<String, Node> mGTaskHashMap;
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private HashMap<String, MetaData> mMetaHashMap;
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private TaskList mMetaList;
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private HashSet<Long> mLocalDeleteIdMap;
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private HashMap<String, Long> mGidToNid;
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private HashMap<Long, String> mNidToGid;
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private GTaskManager() {
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mSyncing = false;
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mCancelled = false;
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mGTaskListHashMap = new HashMap<String, TaskList>();
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private GTaskManager() { //对象初始化函数
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mSyncing = false; //正在同步,flase代表未执行
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mCancelled = false; //全局标识，flase代表可以执行
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mGTaskListHashMap = new HashMap<String, TaskList>(); //<>代表Java的泛型,就是创建一个用类型作为参数的类。
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mGTaskHashMap = new HashMap<String, Node>();
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mMetaHashMap = new HashMap<String, MetaData>();
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mMetaList = null;
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mLocalDeleteIdMap = new HashSet<Long>();
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mGidToNid = new HashMap<String, Long>();
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mNidToGid = new HashMap<Long, String>();
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mGidToNid = new HashMap<String, Long>(); //GoogleID to NodeID??
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mNidToGid = new HashMap<Long, String>(); //NodeID to GoogleID???通过hashmap散列表建立映射
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}
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public static synchronized GTaskManager getInstance() {
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/**
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* 包含关键字synchronized，语言级同步，指明该函数可能运行在多线程的环境下。
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* 功能：类初始化函数
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* @author TTS
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* @return GtaskManger
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*/
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public static synchronized GTaskManager getInstance() { //可能运行在多线程环境下，使用语言级同步--synchronized
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if (mInstance == null) {
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mInstance = new GTaskManager();
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}
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return mInstance;
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}
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/**
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* 包含关键字synchronized，语言级同步，指明该函数可能运行在多线程的环境下。
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* @author TTS
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* @param activity
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*/
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public synchronized void setActivityContext(Activity activity) {
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// used for getting auth token
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mActivity = activity;
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}
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public int sync(Context context, GTaskASyncTask asyncTask) {
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/**
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* 核心函数
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* 功能：实现了本地同步操作和远端同步操作
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* @author TTS
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* @param context-----获取上下文
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* @param asyncTask-------用于同步的异步操作类
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* @return int
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*/
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public int sync(Context context, GTaskASyncTask asyncTask) { //核心函数
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if (mSyncing) {
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Log.d(TAG, "Sync is in progress");
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Log.d(TAG, "Sync is in progress"); //创建日志文件（调试信息），debug
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return STATE_SYNC_IN_PROGRESS;
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}
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mContext = context;
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@ -128,8 +130,8 @@ public class GTaskManager {
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mNidToGid.clear();
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try {
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GTaskClient client = GTaskClient.getInstance();
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client.resetUpdateArray();
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GTaskClient client = GTaskClient.getInstance(); //getInstance即为创建一个实例,client--客户机
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client.resetUpdateArray(); //JSONArray类型，reset即置为NULL
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// login google task
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if (!mCancelled) {
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@ -140,15 +142,15 @@ public class GTaskManager {
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// get the task list from google
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asyncTask.publishProgess(mContext.getString(R.string.sync_progress_init_list));
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initGTaskList();
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initGTaskList(); //获取Google上的JSONtasklist转为本地TaskList
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// do content sync work
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asyncTask.publishProgess(mContext.getString(R.string.sync_progress_syncing));
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syncContent();
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} catch (NetworkFailureException e) {
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Log.e(TAG, e.toString());
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} catch (NetworkFailureException e) { //分为两种异常，此类异常为网络异常
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Log.e(TAG, e.toString()); //创建日志文件（调试信息），error
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return STATE_NETWORK_ERROR;
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} catch (ActionFailureException e) {
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} catch (ActionFailureException e) { //此类异常为操作异常
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Log.e(TAG, e.toString());
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return STATE_INTERNAL_ERROR;
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} catch (Exception e) {
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@ -168,32 +170,41 @@ public class GTaskManager {
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return mCancelled ? STATE_SYNC_CANCELLED : STATE_SUCCESS;
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}
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/**
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*功能：初始化GtaskList，获取Google上的JSONtasklist转为本地TaskList。
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*获得的数据存储在mMetaList，mGTaskListHashMap，mGTaskHashMap
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*@author TTS
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*@exception NetworkFailureException
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*@return void
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*/
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private void initGTaskList() throws NetworkFailureException {
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if (mCancelled)
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return;
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GTaskClient client = GTaskClient.getInstance();
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GTaskClient client = GTaskClient.getInstance(); //getInstance即为创建一个实例，client应指远端客户机
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try {
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JSONArray jsTaskLists = client.getTaskLists();
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//Json对象是Name Value对(即子元素)的无序集合，相当于一个Map对象。JsonObject类是bantouyan-json库对Json对象的抽象，提供操纵Json对象的各种方法。
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//其格式为{"key1":value1,"key2",value2....};key 必须是字符串。
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//因为ajax请求不刷新页面，但配合js可以实现局部刷新，因此json常常被用来作为异步请求的返回对象使用。
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JSONArray jsTaskLists = client.getTaskLists(); //原注释为get task list------lists？？？
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// init meta list first
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mMetaList = null;
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mMetaList = null; //TaskList类型
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for (int i = 0; i < jsTaskLists.length(); i++) {
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JSONObject object = jsTaskLists.getJSONObject(i);
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JSONObject object = jsTaskLists.getJSONObject(i); //JSONObject与JSONArray一个为对象，一个为数组。此处取出单个JASONObject
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String gid = object.getString(GTaskStringUtils.GTASK_JSON_ID);
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String name = object.getString(GTaskStringUtils.GTASK_JSON_NAME);
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if (name
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.equals(GTaskStringUtils.MIUI_FOLDER_PREFFIX + GTaskStringUtils.FOLDER_META)) {
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mMetaList = new TaskList();
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mMetaList.setContentByRemoteJSON(object);
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if (name.equals(GTaskStringUtils.MIUI_FOLDER_PREFFIX + GTaskStringUtils.FOLDER_META)) {
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mMetaList = new TaskList(); //MetaList意为元表,Tasklist类型，此处为初始化
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mMetaList.setContentByRemoteJSON(object); //将JSON中部分数据复制到自己定义的对象中相对应的数据：name->mname...
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// load meta data
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JSONArray jsMetas = client.getTaskList(gid);
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JSONArray jsMetas = client.getTaskList(gid); //原注释为get action_list------list？？？
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for (int j = 0; j < jsMetas.length(); j++) {
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object = (JSONObject) jsMetas.getJSONObject(j);
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MetaData metaData = new MetaData();
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MetaData metaData = new MetaData(); //继承自Node
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metaData.setContentByRemoteJSON(object);
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if (metaData.isWorthSaving()) {
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if (metaData.isWorthSaving()) { //if not worth to save，metadata将不加入mMetaList
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mMetaList.addChildTask(metaData);
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if (metaData.getGid() != null) {
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mMetaHashMap.put(metaData.getRelatedGid(), metaData);
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@ -214,16 +225,16 @@ public class GTaskManager {
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// init task list
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for (int i = 0; i < jsTaskLists.length(); i++) {
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JSONObject object = jsTaskLists.getJSONObject(i);
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String gid = object.getString(GTaskStringUtils.GTASK_JSON_ID);
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String gid = object.getString(GTaskStringUtils.GTASK_JSON_ID); //通过getString函数传入本地某个标志数据的名称，获取其在远端的名称。
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String name = object.getString(GTaskStringUtils.GTASK_JSON_NAME);
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if (name.startsWith(GTaskStringUtils.MIUI_FOLDER_PREFFIX)
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&& !name.equals(GTaskStringUtils.MIUI_FOLDER_PREFFIX
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+ GTaskStringUtils.FOLDER_META)) {
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TaskList tasklist = new TaskList();
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TaskList tasklist = new TaskList(); //继承自Node
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tasklist.setContentByRemoteJSON(object);
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mGTaskListHashMap.put(gid, tasklist);
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mGTaskHashMap.put(gid, tasklist);
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mGTaskHashMap.put(gid, tasklist); //为什么加两遍？？？
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// load tasks
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JSONArray jsTasks = client.getTaskList(gid);
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@ -247,13 +258,18 @@ public class GTaskManager {
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}
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}
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private void syncContent() throws NetworkFailureException {
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/**
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* 功能：本地内容同步操作
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* @throws NetworkFailureException
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* @return 无返回值
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*/
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private void syncContent() throws NetworkFailureException { //本地内容同步操作
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int syncType;
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Cursor c = null;
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String gid;
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Node node;
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Cursor c = null; //数据库指针
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String gid; //GoogleID??
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Node node; //Node包含Sync_Action的不同类型
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mLocalDeleteIdMap.clear();
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mLocalDeleteIdMap.clear(); //HashSet<Long>类型
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if (mCancelled) {
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return;
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@ -301,8 +317,8 @@ public class GTaskManager {
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node = mGTaskHashMap.get(gid);
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if (node != null) {
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mGTaskHashMap.remove(gid);
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mGidToNid.put(gid, c.getLong(SqlNote.ID_COLUMN));
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mNidToGid.put(c.getLong(SqlNote.ID_COLUMN), gid);
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mGidToNid.put(gid, c.getLong(SqlNote.ID_COLUMN)); //通过hashmap建立联系
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mNidToGid.put(c.getLong(SqlNote.ID_COLUMN), gid); //通过hashmap建立联系
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syncType = node.getSyncAction(c);
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} else {
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if (c.getString(SqlNote.GTASK_ID_COLUMN).trim().length() == 0) {
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@ -327,14 +343,14 @@ public class GTaskManager {
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}
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// go through remaining items
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Iterator<Map.Entry<String, Node>> iter = mGTaskHashMap.entrySet().iterator();
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Iterator<Map.Entry<String, Node>> iter = mGTaskHashMap.entrySet().iterator(); //Iterator迭代器
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while (iter.hasNext()) {
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Map.Entry<String, Node> entry = iter.next();
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node = entry.getValue();
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doContentSync(Node.SYNC_ACTION_ADD_LOCAL, node, null);
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}
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// mCancelled can be set by another thread, so we neet to check one by
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// mCancelled can be set by another thread, so we neet to check one by //thread----线程
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// one
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// clear local delete table
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if (!mCancelled) {
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@ -351,6 +367,11 @@ public class GTaskManager {
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}
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/**
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* 功能：
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* @author TTS
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* @throws NetworkFailureException
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*/
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private void syncFolder() throws NetworkFailureException {
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Cursor c = null;
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String gid;
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@ -476,6 +497,14 @@ public class GTaskManager {
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GTaskClient.getInstance().commitUpdate();
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}
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/**
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* 功能：syncType分类，addLocalNode，addRemoteNode，deleteNode，updateLocalNode，updateRemoteNode
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* @author TTS
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* @param syncType
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* @param node
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* @param c
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* @throws NetworkFailureException
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*/
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private void doContentSync(int syncType, Node node, Cursor c) throws NetworkFailureException {
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if (mCancelled) {
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return;
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@ -522,6 +551,12 @@ public class GTaskManager {
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}
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}
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/**
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* 功能：本地增加Node
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* @author TTS
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* @param node
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* @throws NetworkFailureException
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*/
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private void addLocalNode(Node node) throws NetworkFailureException {
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if (mCancelled) {
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return;
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@ -596,6 +631,15 @@ public class GTaskManager {
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updateRemoteMeta(node.getGid(), sqlNote);
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}
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/**
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* 功能：update本地node
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* @author TTS
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* @param node
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* ----同步操作的基础数据类型
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* @param c
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* ----Cursor
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* @throws NetworkFailureException
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*/
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private void updateLocalNode(Node node, Cursor c) throws NetworkFailureException {
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if (mCancelled) {
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return;
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@ -619,12 +663,22 @@ public class GTaskManager {
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updateRemoteMeta(node.getGid(), sqlNote);
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}
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/**
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* 功能：远程增加Node
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* 需要updateRemoteMeta
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* @author TTS
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* @param node
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* ----同步操作的基础数据类型
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* @param c
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* --Cursor
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* @throws NetworkFailureException
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*/
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private void addRemoteNode(Node node, Cursor c) throws NetworkFailureException {
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if (mCancelled) {
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return;
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}
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SqlNote sqlNote = new SqlNote(mContext, c);
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SqlNote sqlNote = new SqlNote(mContext, c); //从本地mContext中获取内容
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Node n;
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// update remotely
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@ -634,11 +688,12 @@ public class GTaskManager {
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String parentGid = mNidToGid.get(sqlNote.getParentId());
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if (parentGid == null) {
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Log.e(TAG, "cannot find task's parent tasklist");
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Log.e(TAG, "cannot find task's parent tasklist"); //调试信息
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throw new ActionFailureException("cannot add remote task");
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}
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mGTaskListHashMap.get(parentGid).addChildTask(task);
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mGTaskListHashMap.get(parentGid).addChildTask(task); //在本地生成的GTaskList中增加子结点
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//登录远程服务器，创建Task
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GTaskClient.getInstance().createTask(task);
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n = (Node) task;
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@ -656,6 +711,7 @@ public class GTaskManager {
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else
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folderName += sqlNote.getSnippet();
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//iterator迭代器，通过统一的接口迭代所有的map元素
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Iterator<Map.Entry<String, TaskList>> iter = mGTaskListHashMap.entrySet().iterator();
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while (iter.hasNext()) {
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Map.Entry<String, TaskList> entry = iter.next();
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@ -687,11 +743,20 @@ public class GTaskManager {
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sqlNote.resetLocalModified();
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sqlNote.commit(true);
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// gid-id mapping
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// gid-id mapping //创建id间的映射
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mGidToNid.put(n.getGid(), sqlNote.getId());
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mNidToGid.put(sqlNote.getId(), n.getGid());
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}
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/**
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* 功能：更新远端的Node，包含meta更新(updateRemoteMeta)
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* @author TTS
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|
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* @param node
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|
|
* ----同步操作的基础数据类型
|
|
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|
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* @param c
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|
|
* --Cursor
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|
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* @throws NetworkFailureException
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|
|
*/
|
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|
|
private void updateRemoteNode(Node node, Cursor c) throws NetworkFailureException {
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|
|
if (mCancelled) {
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|
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|
|
return;
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|
@ -701,7 +766,7 @@ public class GTaskManager {
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|
|
// update remotely
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|
|
node.setContentByLocalJSON(sqlNote.getContent());
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|
|
GTaskClient.getInstance().addUpdateNode(node);
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GTaskClient.getInstance().addUpdateNode(node); //GTaskClient用途为从本地登陆远端服务器
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|
|
// update meta
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|
|
updateRemoteMeta(node.getGid(), sqlNote);
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|
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@ -710,15 +775,19 @@ public class GTaskManager {
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|
|
if (sqlNote.isNoteType()) {
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|
|
Task task = (Task) node;
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|
|
TaskList preParentList = task.getParent();
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|
|
//preParentList为通过node获取的父节点列表
|
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|
|
String curParentGid = mNidToGid.get(sqlNote.getParentId());
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|
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|
|
//curParentGid为通过光标在数据库中找到sqlNote的mParentId，再通过mNidToGid由long类型转为String类型的Gid
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|
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|
|
if (curParentGid == null) {
|
|
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|
|
Log.e(TAG, "cannot find task's parent tasklist");
|
|
|
|
|
throw new ActionFailureException("cannot update remote task");
|
|
|
|
|
}
|
|
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|
|
TaskList curParentList = mGTaskListHashMap.get(curParentGid);
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|
|
//通过HashMap找到对应Gid的TaskList
|
|
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|
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|
|
if (preParentList != curParentList) {
|
|
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|
|
if (preParentList != curParentList) { //?????????????
|
|
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|
|
preParentList.removeChildTask(task);
|
|
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|
|
curParentList.addChildTask(task);
|
|
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|
|
GTaskClient.getInstance().moveTask(task, preParentList, curParentList);
|
|
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|
|
@ -727,9 +796,19 @@ public class GTaskManager {
|
|
|
|
|
|
|
|
|
|
// clear local modified flag
|
|
|
|
|
sqlNote.resetLocalModified();
|
|
|
|
|
//commit到本地数据库
|
|
|
|
|
sqlNote.commit(true);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* 功能：升级远程meta。 meta---元数据----计算机文件系统管理数据---管理数据的数据。
|
|
|
|
|
* @author TTS
|
|
|
|
|
* @param gid
|
|
|
|
|
* ---GoogleID为String类型
|
|
|
|
|
* @param sqlNote
|
|
|
|
|
* ---同步前的数据库操作，故使用类SqlNote
|
|
|
|
|
* @throws NetworkFailureException
|
|
|
|
|
*/
|
|
|
|
|
private void updateRemoteMeta(String gid, SqlNote sqlNote) throws NetworkFailureException {
|
|
|
|
|
if (sqlNote != null && sqlNote.isNoteType()) {
|
|
|
|
|
MetaData metaData = mMetaHashMap.get(gid);
|
|
|
|
|
@ -746,12 +825,18 @@ public class GTaskManager {
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* 功能：刷新本地，给sync的ID对应上最后更改过的对象
|
|
|
|
|
* @author TTS
|
|
|
|
|
* @return void
|
|
|
|
|
* @throws NetworkFailureException
|
|
|
|
|
*/
|
|
|
|
|
private void refreshLocalSyncId() throws NetworkFailureException {
|
|
|
|
|
if (mCancelled) {
|
|
|
|
|
return;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
// get the latest gtask list
|
|
|
|
|
// get the latest gtask list //获取最近的（最晚的）gtask list
|
|
|
|
|
mGTaskHashMap.clear();
|
|
|
|
|
mGTaskListHashMap.clear();
|
|
|
|
|
mMetaHashMap.clear();
|
|
|
|
|
@ -762,16 +847,16 @@ public class GTaskManager {
|
|
|
|
|
c = mContentResolver.query(Notes.CONTENT_NOTE_URI, SqlNote.PROJECTION_NOTE,
|
|
|
|
|
"(type<>? AND parent_id<>?)", new String[] {
|
|
|
|
|
String.valueOf(Notes.TYPE_SYSTEM), String.valueOf(Notes.ID_TRASH_FOLER)
|
|
|
|
|
}, NoteColumns.TYPE + " DESC");
|
|
|
|
|
}, NoteColumns.TYPE + " DESC"); //query语句：五个参数，NoteColumns.TYPE + " DESC"-----为按类型递减顺序返回查询结果。new String[] {String.valueOf(Notes.TYPE_SYSTEM), String.valueOf(Notes.ID_TRASH_FOLER)}------为选择参数。"(type<>? AND parent_id<>?)"-------指明返回行过滤器。SqlNote.PROJECTION_NOTE--------应返回的数据列的名字。Notes.CONTENT_NOTE_URI--------contentProvider包含所有数据集所对应的uri
|
|
|
|
|
if (c != null) {
|
|
|
|
|
while (c.moveToNext()) {
|
|
|
|
|
String gid = c.getString(SqlNote.GTASK_ID_COLUMN);
|
|
|
|
|
Node node = mGTaskHashMap.get(gid);
|
|
|
|
|
if (node != null) {
|
|
|
|
|
mGTaskHashMap.remove(gid);
|
|
|
|
|
ContentValues values = new ContentValues();
|
|
|
|
|
ContentValues values = new ContentValues(); //在ContentValues中创建键值对。准备通过contentResolver写入数据
|
|
|
|
|
values.put(NoteColumns.SYNC_ID, node.getLastModified());
|
|
|
|
|
mContentResolver.update(ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI,
|
|
|
|
|
mContentResolver.update(ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, //进行批量更改，选择参数为NULL，应该可以用insert替换，参数分别为表名和需要更新的value对象。
|
|
|
|
|
c.getLong(SqlNote.ID_COLUMN)), values, null, null);
|
|
|
|
|
} else {
|
|
|
|
|
Log.e(TAG, "something is missed");
|
|
|
|
|
@ -790,10 +875,19 @@ public class GTaskManager {
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* 功能：获取同步账号,mAccount.name
|
|
|
|
|
* @author TTS
|
|
|
|
|
* @return String
|
|
|
|
|
*/
|
|
|
|
|
public String getSyncAccount() {
|
|
|
|
|
return GTaskClient.getInstance().getSyncAccount().name;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* 功能：取消同步，置mCancelled为true
|
|
|
|
|
* @author TTS
|
|
|
|
|
*/
|
|
|
|
|
public void cancelSync() {
|
|
|
|
|
mCancelled = true;
|
|
|
|
|
}
|
|
|
|
|
|
