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@ -34,61 +34,70 @@ import net.micode.notes.gtask.exception.ActionFailureException;
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import org.json.JSONException;
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import org.json.JSONObject;
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/**
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* SqlData 类用于封装便签数据(data表)的数据库操作,
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* 提供对便签内容(如文本、通话记录等)的创建、更新和提交功能,支持与 Google Tasks 同步的数据处理。
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*/
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public class SqlData {
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private static final String TAG = SqlData.class.getSimpleName();
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private static final int INVALID_ID = -99999; // 无效ID标识
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private static final int INVALID_ID = -99999;
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// 数据库查询投影列(对应data表字段)
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public static final String[] PROJECTION_DATA = new String[] {
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DataColumns.ID, DataColumns.MIME_TYPE, DataColumns.CONTENT, DataColumns.DATA1,
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DataColumns.DATA3
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DataColumns.ID, // 数据项ID
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DataColumns.MIME_TYPE, // MIME类型
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DataColumns.CONTENT, // 内容
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DataColumns.DATA1, // 通用数据1(整数)
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DataColumns.DATA3 // 通用数据3(文本)
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};
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// 投影列索引
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public static final int DATA_ID_COLUMN = 0;
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public static final int DATA_MIME_TYPE_COLUMN = 1;
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public static final int DATA_CONTENT_COLUMN = 2;
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public static final int DATA_CONTENT_DATA_1_COLUMN = 3;
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public static final int DATA_CONTENT_DATA_3_COLUMN = 4;
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private ContentResolver mContentResolver;
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private boolean mIsCreate;
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private long mDataId;
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private String mDataMimeType;
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private String mDataContent;
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private long mDataContentData1;
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private String mDataContentData3;
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private ContentValues mDiffDataValues;
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private ContentResolver mContentResolver; // 内容解析器,用于操作内容提供者
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private boolean mIsCreate; // 是否为新建数据(true=新建,false=已存在)
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private long mDataId; // 数据项ID
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private String mDataMimeType; // MIME类型(默认文本便签)
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private String mDataContent; // 数据内容
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private long mDataContentData1; // 通用整数型数据
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private String mDataContentData3; // 通用文本型数据
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private ContentValues mDiffDataValues; // 变更数据缓存(用于批量提交)
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/**
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* 构造函数(新建数据场景)
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* @param context 应用上下文
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*/
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public SqlData(Context context) {
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mContentResolver = context.getContentResolver();
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mIsCreate = true;
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mDataId = INVALID_ID;
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mDataMimeType = DataConstants.NOTE;
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mDataMimeType = DataConstants.NOTE; // 默认MIME类型为文本便签
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mDataContent = "";
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mDataContentData1 = 0;
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mDataContentData3 = "";
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mDiffDataValues = new ContentValues();
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}
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/**
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* 构造函数(从数据库查询结果初始化)
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* @param context 应用上下文
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* @param c 数据库游标(指向data表记录)
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*/
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public SqlData(Context context, Cursor c) {
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mContentResolver = context.getContentResolver();
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mIsCreate = false;
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loadFromCursor(c);
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loadFromCursor(c); // 从游标加载数据
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mDiffDataValues = new ContentValues();
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}
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/**
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* 从游标加载数据到对象属性
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* @param c 数据库游标
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*/
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private void loadFromCursor(Cursor c) {
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mDataId = c.getLong(DATA_ID_COLUMN);
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mDataMimeType = c.getString(DATA_MIME_TYPE_COLUMN);
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@ -97,43 +106,58 @@ public class SqlData {
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mDataContentData3 = c.getString(DATA_CONTENT_DATA_3_COLUMN);
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}
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/**
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* 根据JSON数据设置内容(支持新建和更新场景)
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* @param js 包含数据的JSON对象
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* @throws JSONException JSON解析异常
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*/
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public void setContent(JSONObject js) throws JSONException {
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// 解析ID
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long dataId = js.has(DataColumns.ID) ? js.getLong(DataColumns.ID) : INVALID_ID;
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if (mIsCreate || mDataId != dataId) {
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mDiffDataValues.put(DataColumns.ID, dataId);
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mDiffDataValues.put(DataColumns.ID, dataId); // 记录ID变更
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}
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mDataId = dataId;
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// 解析MIME类型
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String dataMimeType = js.has(DataColumns.MIME_TYPE) ? js.getString(DataColumns.MIME_TYPE)
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: DataConstants.NOTE;
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if (mIsCreate || !mDataMimeType.equals(dataMimeType)) {
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mDiffDataValues.put(DataColumns.MIME_TYPE, dataMimeType);
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mDiffDataValues.put(DataColumns.MIME_TYPE, dataMimeType); // 记录MIME类型变更
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}
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mDataMimeType = dataMimeType;
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// 解析内容
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String dataContent = js.has(DataColumns.CONTENT) ? js.getString(DataColumns.CONTENT) : "";
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if (mIsCreate || !mDataContent.equals(dataContent)) {
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mDiffDataValues.put(DataColumns.CONTENT, dataContent);
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mDiffDataValues.put(DataColumns.CONTENT, dataContent); // 记录内容变更
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}
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mDataContent = dataContent;
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// 解析整数型数据(DATA1)
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long dataContentData1 = js.has(DataColumns.DATA1) ? js.getLong(DataColumns.DATA1) : 0;
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if (mIsCreate || mDataContentData1 != dataContentData1) {
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mDiffDataValues.put(DataColumns.DATA1, dataContentData1);
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mDiffDataValues.put(DataColumns.DATA1, dataContentData1); // 记录DATA1变更
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}
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mDataContentData1 = dataContentData1;
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// 解析文本型数据(DATA3)
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String dataContentData3 = js.has(DataColumns.DATA3) ? js.getString(DataColumns.DATA3) : "";
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if (mIsCreate || !mDataContentData3.equals(dataContentData3)) {
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mDiffDataValues.put(DataColumns.DATA3, dataContentData3);
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mDiffDataValues.put(DataColumns.DATA3, dataContentData3); // 记录DATA3变更
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}
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mDataContentData3 = dataContentData3;
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}
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/**
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* 获取当前数据的JSON表示
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* @return JSON对象(包含data表字段)
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* @throws JSONException JSON构建异常
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*/
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public JSONObject getContent() throws JSONException {
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if (mIsCreate) {
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Log.e(TAG, "it seems that we haven't created this in database yet");
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return null;
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return null; // 新建未提交时返回null
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}
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JSONObject js = new JSONObject();
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js.put(DataColumns.ID, mDataId);
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@ -144,46 +168,59 @@ public class SqlData {
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return js;
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}
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/**
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* 提交数据变更到数据库(新建或更新)
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* @param noteId 所属便签ID(关联note表)
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* @param validateVersion 是否验证版本(用于同步时避免冲突)
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* @param version 预期的便签版本号(仅在validateVersion为true时有效)
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*/
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public void commit(long noteId, boolean validateVersion, long version) {
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if (mIsCreate) {
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// 新建场景:处理无效ID
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if (mDataId == INVALID_ID && mDiffDataValues.containsKey(DataColumns.ID)) {
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mDiffDataValues.remove(DataColumns.ID);
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mDiffDataValues.remove(DataColumns.ID); // 移除无效ID
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}
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// 添加所属便签ID
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mDiffDataValues.put(DataColumns.NOTE_ID, noteId);
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// 插入数据到data表
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Uri uri = mContentResolver.insert(Notes.CONTENT_DATA_URI, mDiffDataValues);
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try {
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// 解析返回的URI获取数据项ID
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mDataId = Long.valueOf(uri.getPathSegments().get(1));
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} catch (NumberFormatException e) {
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Log.e(TAG, "Get note id error :" + e.toString());
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throw new ActionFailureException("create note failed");
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throw new ActionFailureException("create note failed"); // 抛出创建失败异常
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}
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} else {
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// 更新场景:处理变更数据
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if (mDiffDataValues.size() > 0) {
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int result = 0;
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Uri dataUri = ContentUris.withAppendedId(Notes.CONTENT_DATA_URI, mDataId);
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if (!validateVersion) {
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result = mContentResolver.update(ContentUris.withAppendedId(
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Notes.CONTENT_DATA_URI, mDataId), mDiffDataValues, null, null);
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// 不验证版本,直接更新
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result = mContentResolver.update(dataUri, mDiffDataValues, null, null);
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} else {
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result = mContentResolver.update(ContentUris.withAppendedId(
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Notes.CONTENT_DATA_URI, mDataId), mDiffDataValues,
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" ? in (SELECT " + NoteColumns.ID + " FROM " + TABLE.NOTE
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+ " WHERE " + NoteColumns.VERSION + "=?)", new String[] {
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String.valueOf(noteId), String.valueOf(version)
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});
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// 验证版本,防止并发冲突
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result = mContentResolver.update(dataUri, mDiffDataValues,
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" ? IN (SELECT " + NoteColumns.ID + " FROM " + TABLE.NOTE
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+ " WHERE " + NoteColumns.VERSION + "=?)",
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new String[] { String.valueOf(noteId), String.valueOf(version) });
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}
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if (result == 0) {
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Log.w(TAG, "there is no update. maybe user updates note when syncing");
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}
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}
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}
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// 重置状态
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mDiffDataValues.clear();
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mIsCreate = false;
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}
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/**
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* 获取数据项ID
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* @return 数据项ID,新建未提交时返回INVALID_ID
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*/
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public long getId() {
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return mDataId;
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}
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}
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}
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