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/*
* 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.
*/
package net.micode.notes.model;
import android.content.ContentProviderOperation;
import android.content.ContentProviderResult;
import android.content.ContentValues;
import android.content.Context;
import android.content.OperationApplicationException;
import android.net.Uri;
import android.os.RemoteException;
import android.util.Log;
import net.micode.notes.data.Notes;
import net.micode.notes.data.Notes.CallNote;
import net.micode.notes.data.Notes.DataColumns;
import net.micode.notes.data.Notes.NoteColumns;
import net.micode.notes.data.Notes.TextNote;
import java.util.ArrayList;
/**
* 笔记模型类：负责笔记数据的创建、更新和同步到数据库
* 管理笔记的基本信息及关联的文本/通话数据
*/
public class Note {
// 存储笔记属性变更的内容值
private ContentValues mNoteDiffValues;
// 存储笔记关联的详细数据（文本/通话）
private NoteData mNoteData;
private static final String TAG = "Note";
/**
* 创建新笔记ID并插入数据库
* @param context 应用上下文
* @param folderId 所属文件夹ID
* @return 新创建的笔记ID
*/
public static synchronized long getNewNoteId(Context context, long folderId) {
// 初始化笔记基础属性
ContentValues values = new ContentValues();
long createdTime = System.currentTimeMillis();
values.put(NoteColumns.CREATED_DATE, createdTime);
values.put(NoteColumns.MODIFIED_DATE, createdTime);
values.put(NoteColumns.TYPE, Notes.TYPE_NOTE); // 普通笔记类型
values.put(NoteColumns.LOCAL_MODIFIED, 1); // 标记为本地修改
values.put(NoteColumns.PARENT_ID, folderId); // 所属文件夹ID
// 插入数据库获取URI
Uri uri = context.getContentResolver().insert(Notes.CONTENT_NOTE_URI, values);
// 从URI中解析笔记ID
long noteId = 0;
try {
noteId = Long.valueOf(uri.getPathSegments().get(1));
} catch (NumberFormatException e) {
Log.e(TAG, "Get note id error :" + e.toString());
noteId = 0;
}
if (noteId == -1) {
throw new IllegalStateException("Wrong note id:" + noteId);
}
return noteId;
}
/**
* 构造函数：初始化笔记数据容器
*/
public Note() {
mNoteDiffValues = new ContentValues();
mNoteData = new NoteData();
}
/**
* 设置笔记基础属性（如标题、状态等）
* @param key 属性键
* @param value 属性值
*/
public void setNoteValue(String key, String value) {
mNoteDiffValues.put(key, value);
// 标记为本地修改并更新修改时间
mNoteDiffValues.put(NoteColumns.LOCAL_MODIFIED, 1);
mNoteDiffValues.put(NoteColumns.MODIFIED_DATE, System.currentTimeMillis());
}
/**
* 设置文本笔记数据（如笔记内容）
* @param key 数据键
* @param value 数据值
*/
public void setTextData(String key, String value) {
mNoteData.setTextData(key, value);
}
// 以下为文本/通话数据ID的设置与获取方法
public void setTextDataId(long id) {
mNoteData.setTextDataId(id);
}
public long getTextDataId() {
return mNoteData.mTextDataId;
}
public void setCallDataId(long id) {
mNoteData.setCallDataId(id);
}
public void setCallData(String key, String value) {
mNoteData.setCallData(key, value);
}
/**
* 判断笔记是否有本地修改
* @return true表示有未同步的修改
*/
public boolean isLocalModified() {
return mNoteDiffValues.size() > 0 || mNoteData.isLocalModified();
}
/**
* 同步笔记数据到数据库
* @param context 应用上下文
* @param noteId 笔记ID
* @return 同步结果
*/
public boolean syncNote(Context context, long noteId) {
if (noteId <= 0) {
throw new IllegalArgumentException("Wrong note id:" + noteId);
}
// 无修改时直接返回成功
if (!isLocalModified()) {
return true;
}
/**
* 核心逻辑：更新笔记基础信息
* 即使更新失败也会继续处理关联数据（数据安全策略）
*/
if (context.getContentResolver().update(
ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, noteId), mNoteDiffValues, null,
null) == 0) {
Log.e(TAG, "Update note error, should not happen");
}
mNoteDiffValues.clear(); // 清空已同步的修改
// 同步关联的文本/通话数据
if (mNoteData.isLocalModified()
&& (mNoteData.pushIntoContentResolver(context, noteId) == null)) {
return false;
}
return true;
}
/**
* 笔记数据内部类：管理笔记关联的详细数据（文本/通话）
* 负责数据的插入、更新和批量操作
*/
private class NoteData {
private long mTextDataId; // 文本数据ID
private ContentValues mTextDataValues; // 文本数据值
private long mCallDataId; // 通话数据ID
private ContentValues mCallDataValues; // 通话数据值
private static final String TAG = "NoteData";
/**
* 构造函数：初始化数据容器
*/
public NoteData() {
mTextDataValues = new ContentValues();
mCallDataValues = new ContentValues();
mTextDataId = 0;
mCallDataId = 0;
}
/**
* 判断数据是否有本地修改
*/
boolean isLocalModified() {
return mTextDataValues.size() > 0 || mCallDataValues.size() > 0;
}
// 以下为数据ID和数据值的设置方法（带参数校验）
void setTextDataId(long id) {
if(id <= 0) {
throw new IllegalArgumentException("Text data id should larger than 0");
}
mTextDataId = id;
}
void setCallDataId(long id) {
if (id <= 0) {
throw new IllegalArgumentException("Call data id should larger than 0");
}
mCallDataId = id;
}
void setCallData(String key, String value) {
mCallDataValues.put(key, value);
// 同时更新笔记的修改状态和时间
mNoteDiffValues.put(NoteColumns.LOCAL_MODIFIED, 1);
mNoteDiffValues.put(NoteColumns.MODIFIED_DATE, System.currentTimeMillis());
}
void setTextData(String key, String value) {
mTextDataValues.put(key, value);
// 同时更新笔记的修改状态和时间
mNoteDiffValues.put(NoteColumns.LOCAL_MODIFIED, 1);
mNoteDiffValues.put(NoteColumns.MODIFIED_DATE, System.currentTimeMillis());
}
/**
* 将数据推送到内容解析器（批量操作）
* @param context 应用上下文
* @param noteId 关联的笔记ID
* @return 操作结果URI
*/
Uri pushIntoContentResolver(Context context, long noteId) {
/**
* 安全校验
*/
if (noteId <= 0) {
throw new IllegalArgumentException("Wrong note id:" + noteId);
}
ArrayList<ContentProviderOperation> operationList = new ArrayList<ContentProviderOperation>();
ContentProviderOperation.Builder builder = null;
/**
* 处理文本数据更新
*/
if(mTextDataValues.size() > 0) {
mTextDataValues.put(DataColumns.NOTE_ID, noteId); // 关联笔记ID
if (mTextDataId == 0) {
// 新增文本数据
mTextDataValues.put(DataColumns.MIME_TYPE, TextNote.CONTENT_ITEM_TYPE);
Uri uri = context.getContentResolver().insert(Notes.CONTENT_DATA_URI,
mTextDataValues);
try {
setTextDataId(Long.valueOf(uri.getPathSegments().get(1)));
} catch (NumberFormatException e) {
Log.e(TAG, "Insert new text data fail with noteId" + noteId);
mTextDataValues.clear();
return null;
}
} else {
// 更新现有文本数据
builder = ContentProviderOperation.newUpdate(ContentUris.withAppendedId(
Notes.CONTENT_DATA_URI, mTextDataId));
builder.withValues(mTextDataValues);
operationList.add(builder.build());
}
mTextDataValues.clear();
}
/**
* 处理通话数据更新（逻辑与文本数据类似）
*/
if(mCallDataValues.size() > 0) {
mCallDataValues.put(DataColumns.NOTE_ID, noteId);
if (mCallDataId == 0) {
mCallDataValues.put(DataColumns.MIME_TYPE, CallNote.CONTENT_ITEM_TYPE);
Uri uri = context.getContentResolver().insert(Notes.CONTENT_DATA_URI,
mCallDataValues);
try {
setCallDataId(Long.valueOf(uri.getPathSegments().get(1)));
} catch (NumberFormatException e) {
Log.e(TAG, "Insert new call data fail with noteId" + noteId);
mCallDataValues.clear();
return null;
}
} else {
builder = ContentProviderOperation.newUpdate(ContentUris.withAppendedId(
Notes.CONTENT_DATA_URI, mCallDataId));
builder.withValues(mCallDataValues);
operationList.add(builder.build());
}
mCallDataValues.clear();
}
/**
* 执行批量操作
*/
if (operationList.size() > 0) {
try {
ContentProviderResult[] results = context.getContentResolver().applyBatch(
Notes.AUTHORITY, operationList);
return (results == null || results.length == 0 || results[0] == null) ? null
: ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, noteId);
} catch (RemoteException e) {
Log.e(TAG, String.format("%s: %s", e.toString(), e.getMessage()));
return null;
} catch (OperationApplicationException e) {
Log.e(TAG, String.format("%s: %s", e.toString(), e.getMessage()));
return null;
}
}
return null;
}
}
}
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