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提供了一系列方法来处理任务的创建、更新、内容设置和同步操作。

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fengxiaohao
FXH 2 months ago
parent d29c489dcf
commit 409b3e78bc
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Task.java
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// 版权声明
/*
* 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.
*/
// 导入所需的包
package net.micode.notes.gtask.data;
import android.database.Cursor;
import android.text.TextUtils;
import android.util.Log;
import net.micode.notes.data.Notes;
import net.micode.notes.data.Notes.DataColumns;
import net.micode.notes.data.Notes.DataConstants;
import net.micode.notes.data.Notes.NoteColumns;
import net.micode.notes.gtask.exception.ActionFailureException;
import net.micode.notes.tool.GTaskStringUtils;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
// Task类继承自Node类，表示一个任务
public class Task extends Node {
// 类的标签，用于日志记录
private static final String TAG = Task.class.getSimpleName();
// 成员变量
private boolean mCompleted; // 表示任务是否完成
private String mNotes; // 任务的备注信息
private JSONObject mMetaInfo; // 任务的元数据信息
private Task mPriorSibling; // 表示任务在任务列表中的前一个任务
private TaskList mParent; // 表示任务所属的任务列表
// 构造函数
public Task() {
super(); // 调用父类的构造函数
mCompleted = false; // 默认任务未完成
mNotes = null; // 初始没有备注信息
mPriorSibling = null; // 初始没有前一个任务
mParent = null; // 初始没有所属的任务列表
mMetaInfo = null; // 初始没有元数据信息
}
// 生成创建任务的JSON对象
public JSONObject getCreateAction(int actionId) {
JSONObject js = new JSONObject(); // 创建一个空的JSON对象
try {
// action_type
js.put(GTaskStringUtils.GTASK_JSON_ACTION_TYPE,
GTaskStringUtils.GTASK_JSON_ACTION_TYPE_CREATE);
// action_id
js.put(GTaskStringUtils.GTASK_JSON_ACTION_ID, actionId);
// index
js.put(GTaskStringUtils.GTASK_JSON_INDEX, mParent.getChildTaskIndex(this));
// entity_delta
JSONObject entity = new JSONObject();
entity.put(GTaskStringUtils.GTASK_JSON_NAME, getName());
entity.put(GTaskStringUtils.GTASK_JSON_CREATOR_ID, "null");
entity.put(GTaskStringUtils.GTASK_JSON_ENTITY_TYPE,
GTaskStringUtils.GTASK_JSON_TYPE_TASK);
if (getNotes() != null) {
entity.put(GTaskStringUtils.GTASK_JSON_NOTES, getNotes());
}
js.put(GTaskStringUtils.GTASK_JSON_ENTITY_DELTA, entity);
// parent_id
js.put(GTaskStringUtils.GTASK_JSON_PARENT_ID, mParent.getGid());
// dest_parent_type
js.put(GTaskStringUtils.GTASK_JSON_DEST_PARENT_TYPE,
GTaskStringUtils.GTASK_JSON_TYPE_GROUP);
// list_id
js.put(GTaskStringUtils.GTASK_JSON_LIST_ID, mParent.getGid());
// prior_sibling_id
if (mPriorSibling != null) {
js.put(GTaskStringUtils.GTASK_JSON_PRIOR_SIBLING_ID, mPriorSibling.getGid());
}
} catch (JSONException e) {
Log.e(TAG, e.toString());
e.printStackTrace();
throw new ActionFailureException("fail to generate task-create jsonobject");
}
return js;
}
// 生成更新任务的JSON对象
public JSONObject getUpdateAction(int actionId) {
JSONObject js = new JSONObject();
try {
// action_type
js.put(GTaskStringUtils.GTASK_JSON_ACTION_TYPE,
GTaskStringUtils.GTASK_JSON_ACTION_TYPE_UPDATE);
// action_id
js.put(GTaskStringUtils.GTASK_JSON_ACTION_ID, actionId);
// id
js.put(GTaskStringUtils.GTASK_JSON_ID, getGid());
// entity_delta
JSONObject entity = new JSONObject();
entity.put(GTaskStringUtils.GTASK_JSON_NAME, getName());
if (getNotes() != null) {
entity.put(GTaskStringUtils.GTASK_JSON_NOTES, getNotes());
}
entity.put(GTaskStringUtils.GTASK_JSON_DELETED, getDeleted());
js.put(GTaskStringUtils.GTASK_JSON_ENTITY_DELTA, entity);
} catch (JSONException e) {
Log.e(TAG, e.toString());
e.printStackTrace();
throw new ActionFailureException("fail to generate task-update jsonobject");
}
return js;
}
// 根据远程JSON对象设置任务内容
public void setContentByRemoteJSON(JSONObject js) {
if (js != null) {
try {
// id
if (js.has(GTaskStringUtils.GTASK_JSON_ID)) {
setGid(js.getString(GTaskStringUtils.GTASK_JSON_ID));
}
// last_modified
if (js.has(GTaskStringUtils.GTASK_JSON_LAST_MODIFIED)) {
setLastModified(js.getLong(GTaskStringUtils.GTASK_JSON_LAST_MODIFIED));
}
// name
if (js.has(GTaskStringUtils.GTASK_JSON_NAME)) {
setName(js.getString(GTaskStringUtils.GTASK_JSON_NAME));
}
// notes
if (js.has(GTaskStringUtils.GTASK_JSON_NOTES)) {
setNotes(js.getString(GTaskStringUtils.GTASK_JSON_NOTES));
}
// deleted
if (js.has(GTaskStringUtils.GTASK_JSON_DELETED)) {
setDeleted(js.getBoolean(GTaskStringUtils.GTASK_JSON_DELETED));
}
// completed
if (js.has(GTaskStringUtils.GTASK_JSON_COMPLETED)) {
setCompleted(js.getBoolean(GTaskStringUtils.GTASK_JSON_COMPLETED));
}
} catch (JSONException e) {
Log.e(TAG, e.toString());
e.printStackTrace();
throw new ActionFailureException("fail to get task content from jsonobject");
}
}
}
// 根据本地JSON对象设置任务内容
public void setContentByLocalJSON(JSONObject js) {
if (js == null || !js.has(GTaskStringUtils.META_HEAD_NOTE)
|| !js.has(GTaskStringUtils.META_HEAD_DATA)) {
Log.w(TAG, "setContentByLocalJSON: nothing is available");
}
try {
JSONObject note = js.getJSONObject(GTaskStringUtils.META_HEAD_NOTE);
JSONArray dataArray = js.getJSONArray(GTaskStringUtils.META_HEAD_DATA);
if (note.getInt(NoteColumns.TYPE) != Notes.TYPE_NOTE) {
Log.e(TAG, "invalid type");
return;
}
for (int i = 0; i < dataArray.length(); i++) {
JSONObject data = dataArray.getJSONObject(i);
if (TextUtils.equals(data.getString(DataColumns.MIME_TYPE), DataConstants.NOTE)) {
setName(data.getString(DataColumns.CONTENT));
break;
}
}
} catch (JSONException e) {
Log.e(TAG, e.toString());
e.printStackTrace();
}
}
// 从内容生成本地JSON对象
public JSONObject getLocalJSONFromContent() {
String name = getName();
try {
if (mMetaInfo == null) {
// new task created from web
if (name == null) {
Log.w(TAG, "the note seems to be an empty one");
return null;
}
JSONObject js = new JSONObject();
JSONObject note = new JSONObject();
JSONArray dataArray = new JSONArray();
JSONObject data = new JSONObject();
data.put(DataColumns.CONTENT, name);
dataArray.put(data);
js.put(GTaskStringUtils.META_HEAD_DATA, dataArray);
note.put(NoteColumns.TYPE, Notes.TYPE_NOTE);
js.put(GTaskStringUtils.META_HEAD_NOTE, note);
return js;
} else {
// synced task
JSONObject note = mMetaInfo.getJSONObject(GTaskStringUtils.META_HEAD_NOTE);
JSONArray dataArray = mMetaInfo.getJSONArray(GTaskStringUtils.META_HEAD_DATA);
for (int i = 0; i < dataArray.length(); i++) {
JSONObject data = dataArray.getJSONObject(i);
if (TextUtils.equals(data.getString(DataColumns.MIME_TYPE), DataConstants.NOTE)) {
data.put(DataColumns.CONTENT, getName());
break;
}
}
note.put(NoteColumns.TYPE, Notes.TYPE_NOTE);
return mMetaInfo;
}
} catch (JSONException e) {
Log.e(TAG, e.toString());
e.printStackTrace();
return null;
}
}
// 设置任务的元数据信息
public void setMetaInfo(MetaData metaData) {
if (metaData != null && metaData.getNotes() != null) {
try {
mMetaInfo = new JSONObject(metaData.getNotes());
} catch (JSONException e) {
Log.w(TAG, e.toString());
mMetaInfo = null;
}
}
}
// 确定同步操作类型
public int getSyncAction(Cursor c) {
try {
JSONObject noteInfo = null;
if (mMetaInfo != null && mMetaInfo.has(GTaskStringUtils.META_HEAD_NOTE)) {
noteInfo = mMetaInfo.getJSONObject(GTaskStringUtils.META_HEAD_NOTE);
}
if (noteInfo == null) {
Log.w(TAG, "it seems that note meta has been deleted");
return SYNC_ACTION_UPDATE_REMOTE;
}
if (!noteInfo.has(NoteColumns.ID)) {
Log.w(TAG, "remote note id seems to be deleted");
return SYNC_ACTION_UPDATE_LOCAL;
}
// validate the note id now
if (c.getLong(SqlNote.ID_COLUMN) != noteInfo.getLong(NoteColumns.ID)) {
Log.w(TAG, "note id doesn't match");
return SYNC_ACTION_UPDATE_LOCAL;
}
if (c.getInt(SqlNote.LOCAL_MODIFIED_COLUMN) == 0) {
// there is no local update
if (c.getLong(SqlNote.SYNC_ID_COLUMN) == getLastModified()) {
// no update both side
return SYNC_ACTION_NONE;
} else {
// apply remote to local
return SYNC_ACTION_UPDATE_LOCAL;
}
} else {
// validate gtask id
if (!c.getString(SqlNote.GTASK_ID_COLUMN).equals(getGid())) {
Log.e(TAG, "gtask id doesn't match");
return SYNC_ACTION_ERROR;
}
if (c.getLong(SqlNote.SYNC_ID_COLUMN) == getLastModified()) {
// local modification only
return SYNC_ACTION_UPDATE_REMOTE;
} else {
return SYNC_ACTION_UPDATE_CONFLICT;
}
}
} catch (Exception e) {
Log.e(TAG, e.toString());
e.printStackTrace();
}
return SYNC_ACTION_ERROR;
}
// 判断任务是否值得保存
public boolean isWorthSaving() {
return mMetaInfo != null || (getName() != null && getName().trim().length() > 0)
|| (getNotes() != null && getNotes().trim().length() > 0);
}
// 设置任务是否完成
public void setCompleted(boolean completed) {
this.mCompleted = completed;
}
// 设置任务的备注信息
public void setNotes(String notes) {
this.mNotes = notes;
}
// 设置任务在任务列表中的前一个任务
public void setPriorSibling(Task priorSibling) {
this.mPriorSibling = priorSibling;
}
// 设置任务所属的任务列表
public void setParent(TaskList parent) {
this.mParent = parent;
}
// 获取任务是否完成
public boolean getCompleted() {
return this.mCompleted;
}
// 获取任务的备注信息
public String getNotes() {
return this.mNotes;
}
// 获取任务在任务列表中的前一个任务
public Task getPriorSibling() {
return this.mPriorSibling;
}
// 获取任务所属的任务列表
public TaskList getParent() {
return this.mParent;
}
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