ADD file via upload

master
m94fc2tgb 11 months ago
parent f26fc96cde
commit 61aa12cadf

@ -0,0 +1,998 @@
/*
* Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
*
* Licensed 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.
*/
/**
* @ProjectName: MiNote
* @Package: net.micode.notes.gtask.remote
* @ClassName: GTaskManager
* @Description: Google Google
*
* GTaskManager
* GTaskManager
* Activity
*
* GTaskList Google JSON TaskList
*
* Meta
* ID
* 线
* @Author: cyh
*/
package net.micode.notes.gtask.remote;
import android.app.Activity;
import android.content.ContentResolver;
import android.content.ContentUris;
import android.content.ContentValues;
import android.content.Context;
import android.database.Cursor;
import android.util.Log;
import net.micode.notes.R;
import net.micode.notes.data.Notes;
import net.micode.notes.data.Notes.DataColumns;
import net.micode.notes.data.Notes.NoteColumns;
import net.micode.notes.gtask.data.MetaData;
import net.micode.notes.gtask.data.Node;
import net.micode.notes.gtask.data.SqlNote;
import net.micode.notes.gtask.data.Task;
import net.micode.notes.gtask.data.TaskList;
import net.micode.notes.gtask.exception.ActionFailureException;
import net.micode.notes.gtask.exception.NetworkFailureException;
import net.micode.notes.tool.DataUtils;
import net.micode.notes.tool.GTaskStringUtils;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Iterator;
import java.util.Map;
public class GTaskManager {
private static final String TAG = GTaskManager.class.getSimpleName();
public static final int STATE_SUCCESS = 0;
public static final int STATE_NETWORK_ERROR = 1;
public static final int STATE_INTERNAL_ERROR = 2;
public static final int STATE_SYNC_IN_PROGRESS = 3;
public static final int STATE_SYNC_CANCELLED = 4;
private static GTaskManager mInstance = null;
private Activity mActivity;
private Context mContext;
private ContentResolver mContentResolver;
private boolean mSyncing;
private boolean mCancelled;
private HashMap<String, TaskList> mGTaskListHashMap;
private HashMap<String, Node> mGTaskHashMap;
private HashMap<String, MetaData> mMetaHashMap;
private TaskList mMetaList;
private HashSet<Long> mLocalDeleteIdMap;
private HashMap<String, Long> mGidToNid;
private HashMap<Long, String> mNidToGid;
/**
* @GTaskManager()
* @ GTaskManager
* @
* @Author:cyh
*/
private GTaskManager() { //对象初始化函数
mSyncing = false; //正在同步,flase代表未执行
mCancelled = false; //全局标识flase代表可以执行
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。
mGTaskHashMap = new HashMap<String, Node>();
mMetaHashMap = new HashMap<String, MetaData>();
mMetaList = null;
mLocalDeleteIdMap = new HashSet<Long>();
mGidToNid = new HashMap<String, Long>();
mNidToGid = new HashMap<Long, String>(); //通过hashmap散列表建立映射
}
/**
* @GTaskManager getInstance()
* @GTaskManager getInstance() GTaskManager
* @ mInstance null null GTaskManager mInstance null new GTaskManager() GTaskManager mInstance mInstance GTaskManager
* @Author:cyh
*/
public static synchronized GTaskManager getInstance() { //可能运行在多线程环境下,使用语言级同步--synchronized
if (mInstance == null) {
mInstance = new GTaskManager();
}
return mInstance;
}
/**
* @setActivityContext(Activity activity)
* @Activity activity
* @ Activity Activity
* @ activity mActivity
* @Author:cyh
*/
public synchronized void setActivityContext(Activity activity) {
// used for getting authtoken
mActivity = activity;
}
/**
* @sync(Context context, GTaskASyncTask asyncTask)
* @Context context, GTaskASyncTask asyncTask
* @
* @
* mSyncing true STATE_SYNC_IN_PROGRESS
* context mContext ContentResolver
* mSyncing true
* 便
* GTaskClient.getInstance() GTaskClient
* Google NetworkFailureException
* Google TaskList
*
* NetworkFailureException STATE_NETWORK_ERROR
* ActionFailureException STATE_INTERNAL_ERROR
* STATE_INTERNAL_ERROR
* finally mSyncing false
* STATE_SYNC_CANCELLED STATE_SUCCESS
* @Author:cyh
*/
public int sync(Context context, GTaskASyncTask asyncTask) { //核心函数
if (mSyncing) {
Log.d(TAG, "Sync is in progress"); //创建日志文件调试信息debug
return STATE_SYNC_IN_PROGRESS;
}
mContext = context;
mContentResolver = mContext.getContentResolver();
mSyncing = true;
mCancelled = false;
mGTaskListHashMap.clear();
mGTaskHashMap.clear();
mMetaHashMap.clear();
mLocalDeleteIdMap.clear();
mGidToNid.clear();
mNidToGid.clear();
try {
GTaskClient client = GTaskClient.getInstance(); //getInstance即为创建一个实例,client--客户机
client.resetUpdateArray();
// login google task
if (!mCancelled) {
if (!client.login(mActivity)) {
throw new NetworkFailureException("login google task failed");
}
}
// get the task list from google
asyncTask.publishProgess(mContext.getString(R.string.sync_progress_init_list));
initGTaskList(); //获取Google上的JSONtasklist转为本地TaskList
// do content sync work
asyncTask.publishProgess(mContext.getString(R.string.sync_progress_syncing));
syncContent();
} catch (NetworkFailureException e) { //分为两种异常,此类异常为网络异常
Log.e(TAG, e.toString()); //创建日志文件调试信息error
return STATE_NETWORK_ERROR;
} catch (ActionFailureException e) { //此类异常为操作异常
Log.e(TAG, e.toString());
return STATE_INTERNAL_ERROR;
} catch (Exception e) {
Log.e(TAG, e.toString());
e.printStackTrace();
return STATE_INTERNAL_ERROR;
} finally {
mGTaskListHashMap.clear();
mGTaskHashMap.clear();
mMetaHashMap.clear();
mLocalDeleteIdMap.clear();
mGidToNid.clear();
mNidToGid.clear();
mSyncing = false;
}
return mCancelled ? STATE_SYNC_CANCELLED : STATE_SUCCESS;
}
/**
* @initGTaskList()
* @GTaskGTask
* @
*GTaskClientJSONJSONTaskListJSONJSONMetaDataJSONisWorthSaving()gidMetaDatamMetaHashMap
* 使GTaskClientcreateTaskList
* JSONTaskListJSONJSONTaskJSONmMetaHashMap使gidTaskmGTaskHashMap
* JSONActionFailureException
* @Author:cyh
*/
private void initGTaskList() throws NetworkFailureException {
if (mCancelled)
return;
GTaskClient client = GTaskClient.getInstance();
try {
//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。
//其格式为{"key1":value1,"key2",value2....};key 必须是字符串。
//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。
JSONArray jsTaskLists = client.getTaskLists();
// init meta list first
mMetaList = null; //TaskList类型
for (int i = 0; i < jsTaskLists.length(); i++) {
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
String gid = object.getString(GTaskStringUtils.GTASK_JSON_ID);
String name = object.getString(GTaskStringUtils.GTASK_JSON_NAME);
if (name
.equals(GTaskStringUtils.MIUI_FOLDER_PREFFIX + GTaskStringUtils.FOLDER_META)) {
mMetaList = new TaskList(); //MetaList意为元表,Tasklist类型此处为初始化
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...
// load meta data
JSONArray jsMetas = client.getTaskList(gid);
for (int j = 0; j < jsMetas.length(); j++) {
object = (JSONObject) jsMetas.getJSONObject(j);
MetaData metaData = new MetaData();
metaData.setContentByRemoteJSON(object);
if (metaData.isWorthSaving()) { //如果不值得保存metadata将不加入mMetaList
mMetaList.addChildTask(metaData);
if (metaData.getGid() != null) {
mMetaHashMap.put(metaData.getRelatedGid(), metaData);
}
}
}
}
}
// create meta list if not existed
if (mMetaList == null) {
mMetaList = new TaskList();
mMetaList.setName(GTaskStringUtils.MIUI_FOLDER_PREFFIX
+ GTaskStringUtils.FOLDER_META);
GTaskClient.getInstance().createTaskList(mMetaList);
}
// init task list
for (int i = 0; i < jsTaskLists.length(); i++) {
JSONObject object = jsTaskLists.getJSONObject(i);
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。
String name = object.getString(GTaskStringUtils.GTASK_JSON_NAME);
if (name.startsWith(GTaskStringUtils.MIUI_FOLDER_PREFFIX)
&& !name.equals(GTaskStringUtils.MIUI_FOLDER_PREFFIX
+ GTaskStringUtils.FOLDER_META)) {
TaskList tasklist = new TaskList(); //继承自Node
tasklist.setContentByRemoteJSON(object);
mGTaskListHashMap.put(gid, tasklist);
mGTaskHashMap.put(gid, tasklist);
// load tasks
JSONArray jsTasks = client.getTaskList(gid);
for (int j = 0; j < jsTasks.length(); j++) {
object = (JSONObject) jsTasks.getJSONObject(j);
gid = object.getString(GTaskStringUtils.GTASK_JSON_ID);
Task task = new Task();
task.setContentByRemoteJSON(object);
if (task.isWorthSaving()) {
task.setMetaInfo(mMetaHashMap.get(gid));
tasklist.addChildTask(task);
mGTaskHashMap.put(gid, task);
}
}
}
}
} catch (JSONException e) {
Log.e(TAG, e.toString());
e.printStackTrace();
throw new ActionFailureException("initGTaskList: handing JSONObject failed");
}
}
/**
* @syncContent()
* @GTask
* @
* mLocalDeleteIdMapIDHashSet
* mGTaskHashMapgidNodeNodeNodemGTaskHashMapdoContentSyncIDmLocalDeleteIdMap
* syncFolder
* mGTaskHashMapgidNodeNodeNodeNode
* 使IteratormGTaskHashMapNode
* mCancelledtrue
* IDGTask
* @Author:cyh
*/
private void syncContent() throws NetworkFailureException { //本地内容同步操作
int syncType;
Cursor c = null; //数据库指针
String gid;
Node node; //Node包含Sync_Action的不同类型
mLocalDeleteIdMap.clear(); //HashSet<Long>类型
if (mCancelled) {
return;
}
// for local deleted note
try {
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)
}, null);
if (c != null) {
while (c.moveToNext()) {
gid = c.getString(SqlNote.GTASK_ID_COLUMN);
node = mGTaskHashMap.get(gid);
if (node != null) {
mGTaskHashMap.remove(gid);
doContentSync(Node.SYNC_ACTION_DEL_REMOTE, node, c);
}
mLocalDeleteIdMap.add(c.getLong(SqlNote.ID_COLUMN));
}
} else {
Log.w(TAG, "failed to query trash folder");
}
} finally {
if (c != null) {
c.close();
c = null;
}
}
// sync folder first
syncFolder();
// for note existing in database
try {
c = mContentResolver.query(Notes.CONTENT_NOTE_URI, SqlNote.PROJECTION_NOTE,
"(type=? AND parent_id<>?)", new String[] {
String.valueOf(Notes.TYPE_NOTE), String.valueOf(Notes.ID_TRASH_FOLER)
}, NoteColumns.TYPE + " DESC");
if (c != null) {
while (c.moveToNext()) {
gid = c.getString(SqlNote.GTASK_ID_COLUMN);
node = mGTaskHashMap.get(gid);
if (node != null) {
mGTaskHashMap.remove(gid);
mGidToNid.put(gid, c.getLong(SqlNote.ID_COLUMN)); //通过hashmap建立联系
mNidToGid.put(c.getLong(SqlNote.ID_COLUMN), gid); //通过hashmap建立联系
syncType = node.getSyncAction(c);
} else {
if (c.getString(SqlNote.GTASK_ID_COLUMN).trim().length() == 0) {
// local add
syncType = Node.SYNC_ACTION_ADD_REMOTE;
} else {
// remote delete
syncType = Node.SYNC_ACTION_DEL_LOCAL;
}
}
doContentSync(syncType, node, c);
}
} else {
Log.w(TAG, "failed to query existing note in database");
}
} finally {
if (c != null) {
c.close();
c = null;
}
}
// go through remaining items
Iterator<Map.Entry<String, Node>> iter = mGTaskHashMap.entrySet().iterator(); //Iterator迭代器
while (iter.hasNext()) {
Map.Entry<String, Node> entry = iter.next();
node = entry.getValue();
doContentSync(Node.SYNC_ACTION_ADD_LOCAL, node, null);
}
// mCancelled can be set by another thread, so we neet to check one by //thread----线程
// one
// clear local delete table
if (!mCancelled) {
if (!DataUtils.batchDeleteNotes(mContentResolver, mLocalDeleteIdMap)) {
throw new ActionFailureException("failed to batch-delete local deleted notes");
}
}
// refresh local sync id
if (!mCancelled) {
GTaskClient.getInstance().commitUpdate();
refreshLocalSyncId();
}
}
/**
* @syncFolder()
* @
* @root folder call-note folder GTask GTask ID GTask ContentProvider GTask ContentProvider
* @Author:cyh
*/
private void syncFolder() throws NetworkFailureException {
Cursor c = null;
String gid;
Node node;
int syncType;
if (mCancelled) {
return;
}
// for root folder
try {
c = mContentResolver.query(ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI,
Notes.ID_ROOT_FOLDER), SqlNote.PROJECTION_NOTE, null, null, null);
if (c != null) {
c.moveToNext();
gid = c.getString(SqlNote.GTASK_ID_COLUMN);
node = mGTaskHashMap.get(gid);
if (node != null) {
mGTaskHashMap.remove(gid);
mGidToNid.put(gid, (long) Notes.ID_ROOT_FOLDER);
mNidToGid.put((long) Notes.ID_ROOT_FOLDER, gid);
// for system folder, only update remote name if necessary
if (!node.getName().equals(
GTaskStringUtils.MIUI_FOLDER_PREFFIX + GTaskStringUtils.FOLDER_DEFAULT))
doContentSync(Node.SYNC_ACTION_UPDATE_REMOTE, node, c);
} else {
doContentSync(Node.SYNC_ACTION_ADD_REMOTE, node, c);
}
} else {
Log.w(TAG, "failed to query root folder");
}
} finally {
if (c != null) {
c.close();
c = null;
}
}
// for call-note folder
try {
c = mContentResolver.query(Notes.CONTENT_NOTE_URI, SqlNote.PROJECTION_NOTE, "(_id=?)",
new String[] {
String.valueOf(Notes.ID_CALL_RECORD_FOLDER)
}, null);
if (c != null) {
if (c.moveToNext()) {
gid = c.getString(SqlNote.GTASK_ID_COLUMN);
node = mGTaskHashMap.get(gid);
if (node != null) {
mGTaskHashMap.remove(gid);
mGidToNid.put(gid, (long) Notes.ID_CALL_RECORD_FOLDER);
mNidToGid.put((long) Notes.ID_CALL_RECORD_FOLDER, gid);
// for system folder, only update remote name if
// necessary
if (!node.getName().equals(
GTaskStringUtils.MIUI_FOLDER_PREFFIX
+ GTaskStringUtils.FOLDER_CALL_NOTE))
doContentSync(Node.SYNC_ACTION_UPDATE_REMOTE, node, c);
} else {
doContentSync(Node.SYNC_ACTION_ADD_REMOTE, node, c);
}
}
} else {
Log.w(TAG, "failed to query call note folder");
}
} finally {
if (c != null) {
c.close();
c = null;
}
}
// for local existing folders
try {
c = mContentResolver.query(Notes.CONTENT_NOTE_URI, SqlNote.PROJECTION_NOTE,
"(type=? AND parent_id<>?)", new String[] {
String.valueOf(Notes.TYPE_FOLDER), String.valueOf(Notes.ID_TRASH_FOLER)
}, NoteColumns.TYPE + " DESC");
if (c != null) {
while (c.moveToNext()) {
gid = c.getString(SqlNote.GTASK_ID_COLUMN);
node = mGTaskHashMap.get(gid);
if (node != null) {
mGTaskHashMap.remove(gid);
mGidToNid.put(gid, c.getLong(SqlNote.ID_COLUMN));
mNidToGid.put(c.getLong(SqlNote.ID_COLUMN), gid);
syncType = node.getSyncAction(c);
} else {
if (c.getString(SqlNote.GTASK_ID_COLUMN).trim().length() == 0) {
// local add
syncType = Node.SYNC_ACTION_ADD_REMOTE;
} else {
// remote delete
syncType = Node.SYNC_ACTION_DEL_LOCAL;
}
}
doContentSync(syncType, node, c);
}
} else {
Log.w(TAG, "failed to query existing folder");
}
} finally {
if (c != null) {
c.close();
c = null;
}
}
// for remote add folders
Iterator<Map.Entry<String, TaskList>> iter = mGTaskListHashMap.entrySet().iterator();
while (iter.hasNext()) {
Map.Entry<String, TaskList> entry = iter.next();
gid = entry.getKey();
node = entry.getValue();
if (mGTaskHashMap.containsKey(gid)) {
mGTaskHashMap.remove(gid);
doContentSync(Node.SYNC_ACTION_ADD_LOCAL, node, null);
}
}
if (!mCancelled)
GTaskClient.getInstance().commitUpdate();
}
/**
* @doContentSync(int syncType, Node node, Cursor c)
* @int syncType, Node node, Cursor c
* @
* @mCancelled GTask ContentProvider MetaData mMetaHashMap GTask
* @Author:cyh
*/
private void doContentSync(int syncType, Node node, Cursor c) throws NetworkFailureException {
if (mCancelled) {
return;
}
MetaData meta;
switch (syncType) {
case Node.SYNC_ACTION_ADD_LOCAL:
addLocalNode(node);
break;
case Node.SYNC_ACTION_ADD_REMOTE:
addRemoteNode(node, c);
break;
case Node.SYNC_ACTION_DEL_LOCAL:
meta = mMetaHashMap.get(c.getString(SqlNote.GTASK_ID_COLUMN));
if (meta != null) {
GTaskClient.getInstance().deleteNode(meta);
}
mLocalDeleteIdMap.add(c.getLong(SqlNote.ID_COLUMN));
break;
case Node.SYNC_ACTION_DEL_REMOTE:
meta = mMetaHashMap.get(node.getGid());
if (meta != null) {
GTaskClient.getInstance().deleteNode(meta);
}
GTaskClient.getInstance().deleteNode(node);
break;
case Node.SYNC_ACTION_UPDATE_LOCAL:
updateLocalNode(node, c);
break;
case Node.SYNC_ACTION_UPDATE_REMOTE:
updateRemoteNode(node, c);
break;
case Node.SYNC_ACTION_UPDATE_CONFLICT:
// merging both modifications maybe a good idea
// right now just use local update simply
updateRemoteNode(node, c);
break;
case Node.SYNC_ACTION_NONE:
break;
case Node.SYNC_ACTION_ERROR:
default:
throw new ActionFailureException("unkown sync action type");
}
}
/**
* @addLocalNode(Node node)
* @Node node
* @Node GTask
* @
* mCancelled
* SqlNote SqlNote
* TaskList SqlNote SqlNote SqlNote SqlNote JSON
* TaskList SqlNote JSON SqlNote parentId ContentProvider Id
* SqlNote GTaskId Gid SqlNote ContentProvider
* mGidToNid mNidToGid GTask Gid ContentProvider Id
* updateRemoteMeta MetaData GTask ContentProvider
* @Author:cyh
*/
private void addLocalNode(Node node) throws NetworkFailureException {
if (mCancelled) {
return;
}
SqlNote sqlNote;
if (node instanceof TaskList) {
if (node.getName().equals(
GTaskStringUtils.MIUI_FOLDER_PREFFIX + GTaskStringUtils.FOLDER_DEFAULT)) {
sqlNote = new SqlNote(mContext, Notes.ID_ROOT_FOLDER);
} else if (node.getName().equals(
GTaskStringUtils.MIUI_FOLDER_PREFFIX + GTaskStringUtils.FOLDER_CALL_NOTE)) {
sqlNote = new SqlNote(mContext, Notes.ID_CALL_RECORD_FOLDER);
} else {
sqlNote = new SqlNote(mContext);
sqlNote.setContent(node.getLocalJSONFromContent());
sqlNote.setParentId(Notes.ID_ROOT_FOLDER);
}
} else {
sqlNote = new SqlNote(mContext);
JSONObject js = node.getLocalJSONFromContent();
try {
if (js.has(GTaskStringUtils.META_HEAD_NOTE)) {
JSONObject note = js.getJSONObject(GTaskStringUtils.META_HEAD_NOTE);
if (note.has(NoteColumns.ID)) {
long id = note.getLong(NoteColumns.ID);
if (DataUtils.existInNoteDatabase(mContentResolver, id)) {
// the id is not available, have to create a new one
note.remove(NoteColumns.ID);
}
}
}
if (js.has(GTaskStringUtils.META_HEAD_DATA)) {
JSONArray dataArray = js.getJSONArray(GTaskStringUtils.META_HEAD_DATA);
for (int i = 0; i < dataArray.length(); i++) {
JSONObject data = dataArray.getJSONObject(i);
if (data.has(DataColumns.ID)) {
long dataId = data.getLong(DataColumns.ID);
if (DataUtils.existInDataDatabase(mContentResolver, dataId)) {
// the data id is not available, have to create
// a new one
data.remove(DataColumns.ID);
}
}
}
}
} catch (JSONException e) {
Log.w(TAG, e.toString());
e.printStackTrace();
}
sqlNote.setContent(js);
Long parentId = mGidToNid.get(((Task) node).getParent().getGid());
if (parentId == null) {
Log.e(TAG, "cannot find task's parent id locally");
throw new ActionFailureException("cannot add local node");
}
sqlNote.setParentId(parentId.longValue());
}
// create the local node
sqlNote.setGtaskId(node.getGid());
sqlNote.commit(false);
// update gid-nid mapping
mGidToNid.put(node.getGid(), sqlNote.getId());
mNidToGid.put(sqlNote.getId(), node.getGid());
// update meta
updateRemoteMeta(node.getGid(), sqlNote);
}
/**
* @updateLocalNode(Node node, Cursor c)
* @Node node, Cursor c
* @ GTask ContentProvider
* @
* mCancelled
* Cursor c SqlNote
* JSON SqlNote SqlNote parentId Task GTask Gid mGidToNid ContentProvider Id SqlNote parentId parentId Id
* SqlNote ContentProvider
* updateRemoteMeta MetaData GTask ContentProvider
* @Author:cyh
*/
private void updateLocalNode(Node node, Cursor c) throws NetworkFailureException {
if (mCancelled) {
return;
}
SqlNote sqlNote;
// update the note locally
sqlNote = new SqlNote(mContext, c);
sqlNote.setContent(node.getLocalJSONFromContent());
Long parentId = (node instanceof Task) ? mGidToNid.get(((Task) node).getParent().getGid())
: new Long(Notes.ID_ROOT_FOLDER);
if (parentId == null) {
Log.e(TAG, "cannot find task's parent id locally");
throw new ActionFailureException("cannot update local node");
}
sqlNote.setParentId(parentId.longValue());
sqlNote.commit(true);
// update meta info
updateRemoteMeta(node.getGid(), sqlNote);
}
/**
* @addRemoteNode(Node node, Cursor c)
* @Node node, Cursor c
* @
* @
* mCancelled
* Cursor c SqlNote
* SqlNote Note SqlNote Task Task GTask 使 GTaskClient createTask Task updateRemoteMeta MetaData
* SqlNote Note SqlNote id mGTaskListHashMap tasklist TaskList mGTaskHashMap TaskList 使 GTaskClient createTaskList TaskList
* Gid SqlNote ContentProvider gid-id id-gid
* @Author:cyh
*/
private void addRemoteNode(Node node, Cursor c) throws NetworkFailureException {
if (mCancelled) {
return;
}
SqlNote sqlNote = new SqlNote(mContext, c); //从本地mContext中获取内容
Node n;
// update remotely
if (sqlNote.isNoteType()) {
Task task = new Task();
task.setContentByLocalJSON(sqlNote.getContent());
String parentGid = mNidToGid.get(sqlNote.getParentId());
if (parentGid == null) {
Log.e(TAG, "cannot find task's parent tasklist"); //调试信息
throw new ActionFailureException("cannot add remote task");
}
mGTaskListHashMap.get(parentGid).addChildTask(task); //在本地生成的GTaskList中增加子结点
//登录远程服务器创建Task
GTaskClient.getInstance().createTask(task);
n = (Node) task;
// add meta
updateRemoteMeta(task.getGid(), sqlNote);
} else {
TaskList tasklist = null;
// we need to skip folder if it has already existed
String folderName = GTaskStringUtils.MIUI_FOLDER_PREFFIX;
if (sqlNote.getId() == Notes.ID_ROOT_FOLDER)
folderName += GTaskStringUtils.FOLDER_DEFAULT;
else if (sqlNote.getId() == Notes.ID_CALL_RECORD_FOLDER)
folderName += GTaskStringUtils.FOLDER_CALL_NOTE;
else
folderName += sqlNote.getSnippet();
//iterator迭代器通过统一的接口迭代所有的map元素
Iterator<Map.Entry<String, TaskList>> iter = mGTaskListHashMap.entrySet().iterator();
while (iter.hasNext()) {
Map.Entry<String, TaskList> entry = iter.next();
String gid = entry.getKey();
TaskList list = entry.getValue();
if (list.getName().equals(folderName)) {
tasklist = list;
if (mGTaskHashMap.containsKey(gid)) {
mGTaskHashMap.remove(gid);
}
break;
}
}
// no match we can add now
if (tasklist == null) {
tasklist = new TaskList();
tasklist.setContentByLocalJSON(sqlNote.getContent());
GTaskClient.getInstance().createTaskList(tasklist);
mGTaskListHashMap.put(tasklist.getGid(), tasklist);
}
n = (Node) tasklist;
}
// update local note
sqlNote.setGtaskId(n.getGid());
sqlNote.commit(false);
sqlNote.resetLocalModified();
sqlNote.commit(true);
// gid-id mapping //创建id间的映射
mGidToNid.put(n.getGid(), sqlNote.getId());
mNidToGid.put(sqlNote.getId(), n.getGid());
}
/**
* @updateRemoteNode(Node node, Cursor c)
* @Node node, Cursor c
* @
* @
* mCancelled
* Cursor c SqlNote node 使 GTaskClient addUpdateNode
* updateRemoteMeta
* Note preParentList sqlNote parentId Gid curParentGid curParentGid null curParentGid mGTaskListHashMap TaskList curParentList
* preParentList curParentList preParentList curParentList 使 GTaskClient moveTask
* @Author:cyh
*/
private void updateRemoteNode(Node node, Cursor c) throws NetworkFailureException {
if (mCancelled) {
return;
}
SqlNote sqlNote = new SqlNote(mContext, c);
// update remotely
node.setContentByLocalJSON(sqlNote.getContent());
GTaskClient.getInstance().addUpdateNode(node);//GTaskClient用途为从本地登陆远端服务器
// update meta
updateRemoteMeta(node.getGid(), sqlNote);
// move task if necessary
if (sqlNote.isNoteType()) {
Task task = (Task) node;
TaskList preParentList = task.getParent();
//preParentList为通过node获取的父节点列表
String curParentGid = mNidToGid.get(sqlNote.getParentId());
//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
if (curParentGid == null) {
Log.e(TAG, "cannot find task's parent tasklist");
throw new ActionFailureException("cannot update remote task");
}
TaskList curParentList = mGTaskListHashMap.get(curParentGid);
//通过HashMap找到对应Gid的TaskList
if (preParentList != curParentList) {
preParentList.removeChildTask(task);
curParentList.addChildTask(task);
GTaskClient.getInstance().moveTask(task, preParentList, curParentList);
}
}
// clear local modified flag
sqlNote.resetLocalModified();
//commit到本地数据库
sqlNote.commit(true);
}
/**
* @updateRemoteMeta(String gid, SqlNote sqlNote)
* @String gid, SqlNote sqlNote
* @
* @
* sqlNote isNoteType null gid mMetaHashMap metaData
* metaData null sqlNote 使 GTaskClient addUpdateNode
* metaData null MetaData sqlNote metaData mMetaList mMetaHashMap 使 GTaskClient createTask
* @Author:cyh
*/
private void updateRemoteMeta(String gid, SqlNote sqlNote) throws NetworkFailureException {
if (sqlNote != null && sqlNote.isNoteType()) {
MetaData metaData = mMetaHashMap.get(gid);
if (metaData != null) {
metaData.setMeta(gid, sqlNote.getContent());
GTaskClient.getInstance().addUpdateNode(metaData);
} else {
metaData = new MetaData();
metaData.setMeta(gid, sqlNote.getContent());
mMetaList.addChildTask(metaData);
mMetaHashMap.put(gid, metaData);
GTaskClient.getInstance().createTask(metaData);
}
}
}
/**
* @refreshLocalSyncId()
* @ID
* @
* mCancelled
* mGTaskHashMapmGTaskListHashMap mMetaHashMap GTaskList
* 使 ContentResolver query Notes.CONTENT_NOTE_URI SqlNote.PROJECTION_NOTE
* null gid mGTaskHashMap node
* node nullID mGTaskHashMap ContentValues valuesID
* 使 ContentResolver update ContentUris.withAppendedId
* node null ActionFailureException
* finally c
* @Author:cyh
*/
private void refreshLocalSyncId() throws NetworkFailureException {
if (mCancelled) {
return;
}
// get the latest gtask list //获取最近的最晚的gtask list
mGTaskHashMap.clear();
mGTaskListHashMap.clear();
mMetaHashMap.clear();
initGTaskList();
Cursor c = null;
try {
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"); //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(); //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, //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");
throw new ActionFailureException(
"some local items don't have gid after sync");
}
}
} else {
Log.w(TAG, "failed to query local note to refresh sync id");
}
} finally {
if (c != null) {
c.close();
c = null;
}
}
}
/**
* @getSyncAccount()
* @
* @ GTaskClient getSyncAccount
* @Author:cyh
*/
public String getSyncAccount() {
return GTaskClient.getInstance().getSyncAccount().name;
}
/**
* @cancelSync()
* @
* @ mCancelled true
* @Author:cyh
*/
public void cancelSync() {
mCancelled = true;
}
}
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