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src\....\data文件已全部注释

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know-ovo 3 months ago
parent c4928bf7fc
commit 624183fbfc
5 changed files with 457 additions and 351 deletions
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2
.idea/misc.xml
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@ -3,7 +3,7 @@
<component name="MavenRunner"> <component name="MavenRunner">
<option name="vmOptions" value="-DarchetypeCatalog=internal" /> <option name="vmOptions" value="-DarchetypeCatalog=internal" />
</component> </component>
<component name="ProjectRootManager" version="2" languageLevel="JDK_22" default="true" project-jdk-name="22" project-jdk-type="JavaSDK"> <component name="ProjectRootManager" version="2" languageLevel="JDK_X" default="true" project-jdk-name="openjdk-24" project-jdk-type="Android SDK">
<output url="file://$PROJECT_DIR$/out" /> <output url="file://$PROJECT_DIR$/out" />
</component> </component>
</project> </project>

37
src/net/micode/notes/data/Contact.java
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@ -26,48 +26,65 @@ import android.util.Log;
import java.util.HashMap; import java.util.HashMap;
public class Contact { public class Contact {
// 联系人缓存：电话号码 -> 联系人名称
private static HashMap<String, String> sContactCache; private static HashMap<String, String> sContactCache;
private static final String TAG = "Contact"; private static final String TAG = "Contact";
// 联系人查询条件：匹配电话号码并关联到正确的MIME类型
private static final String CALLER_ID_SELECTION = "PHONE_NUMBERS_EQUAL(" + Phone.NUMBER private static final String CALLER_ID_SELECTION = "PHONE_NUMBERS_EQUAL(" + Phone.NUMBER
+ ",?) AND " + Data.MIMETYPE + "='" + Phone.CONTENT_ITEM_TYPE + "'" + ",?) AND " + Data.MIMETYPE + "='" + Phone.CONTENT_ITEM_TYPE + "'"
+ " AND " + Data.RAW_CONTACT_ID + " IN " + " AND " + Data.RAW_CONTACT_ID + " IN "
+ "(SELECT raw_contact_id " + "(SELECT raw_contact_id "
+ " FROM phone_lookup" + " FROM phone_lookup"
+ " WHERE min_match = '+')"; + " WHERE min_match = '+')";
/**
* 根据电话号码获取联系人名称（支持缓存机制）
*
* @param context 应用上下文
* @param phoneNumber 待查询的电话号码
* @return 联系人名称，如果未找到则返回null
*/
public static String getContact(Context context, String phoneNumber) { public static String getContact(Context context, String phoneNumber) {
// 初始化联系人缓存
if(sContactCache == null) { if(sContactCache == null) {
sContactCache = new HashMap<String, String>(); sContactCache = new HashMap<String, String>();
} }
// 优先从缓存中获取联系人名称
if(sContactCache.containsKey(phoneNumber)) { if(sContactCache.containsKey(phoneNumber)) {
return sContactCache.get(phoneNumber); return sContactCache.get(phoneNumber);
} }
// 构建查询条件（替换占位符为实际的最小匹配值）
String selection = CALLER_ID_SELECTION.replace("+", String selection = CALLER_ID_SELECTION.replace("+",
PhoneNumberUtils.toCallerIDMinMatch(phoneNumber)); PhoneNumberUtils.toCallerIDMinMatch(phoneNumber));
// 执行联系人数据库查询
Cursor cursor = context.getContentResolver().query( Cursor cursor = context.getContentResolver().query(
Data.CONTENT_URI, Data.CONTENT_URI, // 查询联系人数据URI
new String [] { Phone.DISPLAY_NAME }, new String [] { Phone.DISPLAY_NAME }, // 只需要显示名称字段
selection, selection, // 使用构建好的查询条件
new String[] { phoneNumber }, new String[] { phoneNumber }, // 查询参数（电话号码）
null); null); // 不指定排序
// 处理查询结果
if (cursor != null && cursor.moveToFirst()) { if (cursor != null && cursor.moveToFirst()) {
try { try {
// 获取联系人名称并加入缓存
String name = cursor.getString(0); String name = cursor.getString(0);
sContactCache.put(phoneNumber, name); sContactCache.put(phoneNumber, name);
return name; return name;
} catch (IndexOutOfBoundsException e) { } catch (IndexOutOfBoundsException e) {
Log.e(TAG, " Cursor get string error " + e.toString()); Log.e(TAG, "从Cursor获取字符串时出错: " + e.toString());
return null; return null;
} finally { } finally {
// 确保关闭Cursor释放资源
cursor.close(); cursor.close();
} }
} else { } else {
Log.d(TAG, "No contact matched with number:" + phoneNumber); Log.d(TAG, "未找到匹配号码的联系人: " + phoneNumber);
return null; return null;
} }
} }
} }

173
src/net/micode/notes/data/Notes.java
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@ -18,262 +18,281 @@ package net.micode.notes.data;
import android.net.Uri; import android.net.Uri;
public class Notes { public class Notes {
// 内容提供者的授权字符串
public static final String AUTHORITY = "micode_notes"; public static final String AUTHORITY = "micode_notes";
// 日志标签
public static final String TAG = "Notes"; public static final String TAG = "Notes";
// 笔记类型常量
public static final int TYPE_NOTE = 0; public static final int TYPE_NOTE = 0;
// 文件夹类型常量
public static final int TYPE_FOLDER = 1; public static final int TYPE_FOLDER = 1;
// 系统类型常量
public static final int TYPE_SYSTEM = 2; public static final int TYPE_SYSTEM = 2;
/** /**
* Following IDs are system folders' identifiers * 以下ID是系统文件夹的标识符
* {@link Notes#ID_ROOT_FOLDER } is default folder * {@link Notes#ID_ROOT_FOLDER } 是默认文件夹
* {@link Notes#ID_TEMPARAY_FOLDER } is for notes belonging no folder * {@link Notes#ID_TEMPARAY_FOLDER } 用于不属于任何文件夹的笔记
* {@link Notes#ID_CALL_RECORD_FOLDER} is to store call records * {@link Notes#ID_CALL_RECORD_FOLDER} 用于存储通话记录
*/ */
public static final int ID_ROOT_FOLDER = 0; public static final int ID_ROOT_FOLDER = 0;
public static final int ID_TEMPARAY_FOLDER = -1; public static final int ID_TEMPARAY_FOLDER = -1;
public static final int ID_CALL_RECORD_FOLDER = -2; public static final int ID_CALL_RECORD_FOLDER = -2;
public static final int ID_TRASH_FOLER = -3; public static final int ID_TRASH_FOLER = -3;
// 提醒日期的Intent额外数据键
public static final String INTENT_EXTRA_ALERT_DATE = "net.micode.notes.alert_date"; public static final String INTENT_EXTRA_ALERT_DATE = "net.micode.notes.alert_date";
// 背景ID的Intent额外数据键
public static final String INTENT_EXTRA_BACKGROUND_ID = "net.micode.notes.background_color_id"; public static final String INTENT_EXTRA_BACKGROUND_ID = "net.micode.notes.background_color_id";
// 小部件ID的Intent额外数据键
public static final String INTENT_EXTRA_WIDGET_ID = "net.micode.notes.widget_id"; public static final String INTENT_EXTRA_WIDGET_ID = "net.micode.notes.widget_id";
// 小部件类型的Intent额外数据键
public static final String INTENT_EXTRA_WIDGET_TYPE = "net.micode.notes.widget_type"; public static final String INTENT_EXTRA_WIDGET_TYPE = "net.micode.notes.widget_type";
// 文件夹ID的Intent额外数据键
public static final String INTENT_EXTRA_FOLDER_ID = "net.micode.notes.folder_id"; public static final String INTENT_EXTRA_FOLDER_ID = "net.micode.notes.folder_id";
// 通话日期的Intent额外数据键
public static final String INTENT_EXTRA_CALL_DATE = "net.micode.notes.call_date"; public static final String INTENT_EXTRA_CALL_DATE = "net.micode.notes.call_date";
// 无效小部件类型常量
public static final int TYPE_WIDGET_INVALIDE = -1; public static final int TYPE_WIDGET_INVALIDE = -1;
// 2x大小的小部件类型常量
public static final int TYPE_WIDGET_2X = 0; public static final int TYPE_WIDGET_2X = 0;
// 4x大小的小部件类型常量
public static final int TYPE_WIDGET_4X = 1; public static final int TYPE_WIDGET_4X = 1;
public static class DataConstants { public static class DataConstants {
// 文本笔记的MIME类型
public static final String NOTE = TextNote.CONTENT_ITEM_TYPE; public static final String NOTE = TextNote.CONTENT_ITEM_TYPE;
// 通话笔记的MIME类型
public static final String CALL_NOTE = CallNote.CONTENT_ITEM_TYPE; public static final String CALL_NOTE = CallNote.CONTENT_ITEM_TYPE;
} }
/** /**
* Uri to query all notes and folders * 用于查询所有笔记和文件夹的Uri
*/ */
public static final Uri CONTENT_NOTE_URI = Uri.parse("content://" + AUTHORITY + "/note"); public static final Uri CONTENT_NOTE_URI = Uri.parse("content://" + AUTHORITY + "/note");
/** /**
* Uri to query data * 用于查询数据的Uri
*/ */
public static final Uri CONTENT_DATA_URI = Uri.parse("content://" + AUTHORITY + "/data"); public static final Uri CONTENT_DATA_URI = Uri.parse("content://" + AUTHORITY + "/data");
// 笔记表的列定义
public interface NoteColumns { public interface NoteColumns {
/** /**
* The unique ID for a row * 行的唯一ID
* <P> Type: INTEGER (long) </P> * <P> 类型: INTEGER (长整型) </P>
*/ */
public static final String ID = "_id"; public static final String ID = "_id";
/** /**
* The parent's id for note or folder * 笔记或文件夹的父ID
* <P> Type: INTEGER (long) </P> * <P> 类型: INTEGER (长整型) </P>
*/ */
public static final String PARENT_ID = "parent_id"; public static final String PARENT_ID = "parent_id";
/** /**
* Created data for note or folder * 笔记或文件夹的创建日期
* <P> Type: INTEGER (long) </P> * <P> 类型: INTEGER (长整型) </P>
*/ */
public static final String CREATED_DATE = "created_date"; public static final String CREATED_DATE = "created_date";
/** /**
* Latest modified date * 最新修改日期
* <P> Type: INTEGER (long) </P> * <P> 类型: INTEGER (长整型) </P>
*/ */
public static final String MODIFIED_DATE = "modified_date"; public static final String MODIFIED_DATE = "modified_date";
/** /**
* Alert date * 提醒日期
* <P> Type: INTEGER (long) </P> * <P> 类型: INTEGER (长整型) </P>
*/ */
public static final String ALERTED_DATE = "alert_date"; public static final String ALERTED_DATE = "alert_date";
/** /**
* Folder's name or text content of note * 文件夹名称或笔记的文本内容
* <P> Type: TEXT </P> * <P> 类型: TEXT </P>
*/ */
public static final String SNIPPET = "snippet"; public static final String SNIPPET = "snippet";
/** /**
* Note's widget id * 笔记的小部件ID
* <P> Type: INTEGER (long) </P> * <P> 类型: INTEGER (长整型) </P>
*/ */
public static final String WIDGET_ID = "widget_id"; public static final String WIDGET_ID = "widget_id";
/** /**
* Note's widget type * 笔记的小部件类型
* <P> Type: INTEGER (long) </P> * <P> 类型: INTEGER (长整型) </P>
*/ */
public static final String WIDGET_TYPE = "widget_type"; public static final String WIDGET_TYPE = "widget_type";
/** /**
* Note's background color's id * 笔记的背景颜色ID
* <P> Type: INTEGER (long) </P> * <P> 类型: INTEGER (长整型) </P>
*/ */
public static final String BG_COLOR_ID = "bg_color_id"; public static final String BG_COLOR_ID = "bg_color_id";
/** /**
* For text note, it doesn't has attachment, for multi-media * 对于文本笔记，没有附件；对于多媒体笔记，至少有一个附件
* note, it has at least one attachment * <P> 类型: INTEGER </P>
* <P> Type: INTEGER </P>
*/ */
public static final String HAS_ATTACHMENT = "has_attachment"; public static final String HAS_ATTACHMENT = "has_attachment";
/** /**
* Folder's count of notes * 文件夹中笔记的数量
* <P> Type: INTEGER (long) </P> * <P> 类型: INTEGER (长整型) </P>
*/ */
public static final String NOTES_COUNT = "notes_count"; public static final String NOTES_COUNT = "notes_count";
/** /**
* The file type: folder or note * 文件类型：文件夹或笔记
* <P> Type: INTEGER </P> * <P> 类型: INTEGER </P>
*/ */
public static final String TYPE = "type"; public static final String TYPE = "type";
/** /**
* The last sync id * 最后同步ID
* <P> Type: INTEGER (long) </P> * <P> 类型: INTEGER (长整型) </P>
*/ */
public static final String SYNC_ID = "sync_id"; public static final String SYNC_ID = "sync_id";
/** /**
* Sign to indicate local modified or not * 标记是否本地修改
* <P> Type: INTEGER </P> * <P> 类型: INTEGER </P>
*/ */
public static final String LOCAL_MODIFIED = "local_modified"; public static final String LOCAL_MODIFIED = "local_modified";
/** /**
* Original parent id before moving into temporary folder * 移动到临时文件夹前的原始父ID
* <P> Type : INTEGER </P> * <P> 类型 : INTEGER </P>
*/ */
public static final String ORIGIN_PARENT_ID = "origin_parent_id"; public static final String ORIGIN_PARENT_ID = "origin_parent_id";
/** /**
* The gtask id * Google任务ID
* <P> Type : TEXT </P> * <P> 类型 : TEXT </P>
*/ */
public static final String GTASK_ID = "gtask_id"; public static final String GTASK_ID = "gtask_id";
/** /**
* The version code * 版本号
* <P> Type : INTEGER (long) </P> * <P> 类型 : INTEGER (长整型) </P>
*/ */
public static final String VERSION = "version"; public static final String VERSION = "version";
} }
// 数据表的列定义
public interface DataColumns { public interface DataColumns {
/** /**
* The unique ID for a row * 行的唯一ID
* <P> Type: INTEGER (long) </P> * <P> 类型: INTEGER (长整型) </P>
*/ */
public static final String ID = "_id"; public static final String ID = "_id";
/** /**
* The MIME type of the item represented by this row. * 此行表示的项目的MIME类型
* <P> Type: Text </P> * <P> 类型: Text </P>
*/ */
public static final String MIME_TYPE = "mime_type"; public static final String MIME_TYPE = "mime_type";
/** /**
* The reference id to note that this data belongs to * 此数据所属笔记的引用ID
* <P> Type: INTEGER (long) </P> * <P> 类型: INTEGER (长整型) </P>
*/ */
public static final String NOTE_ID = "note_id"; public static final String NOTE_ID = "note_id";
/** /**
* Created data for note or folder * 笔记或文件夹的创建日期
* <P> Type: INTEGER (long) </P> * <P> 类型: INTEGER (长整型) </P>
*/ */
public static final String CREATED_DATE = "created_date"; public static final String CREATED_DATE = "created_date";
/** /**
* Latest modified date * 最新修改日期
* <P> Type: INTEGER (long) </P> * <P> 类型: INTEGER (长整型) </P>
*/ */
public static final String MODIFIED_DATE = "modified_date"; public static final String MODIFIED_DATE = "modified_date";
/** /**
* Data's content * 数据内容
* <P> Type: TEXT </P> * <P> 类型: TEXT </P>
*/ */
public static final String CONTENT = "content"; public static final String CONTENT = "content";
/** /**
* Generic data column, the meaning is {@link #MIMETYPE} specific, used for * 通用数据列，含义由{@link #MIMETYPE}指定，用于整型数据类型
* integer data type * <P> 类型: INTEGER </P>
* <P> Type: INTEGER </P>
*/ */
public static final String DATA1 = "data1"; public static final String DATA1 = "data1";
/** /**
* Generic data column, the meaning is {@link #MIMETYPE} specific, used for * 通用数据列，含义由{@link #MIMETYPE}指定，用于整型数据类型
* integer data type * <P> 类型: INTEGER </P>
* <P> Type: INTEGER </P>
*/ */
public static final String DATA2 = "data2"; public static final String DATA2 = "data2";
/** /**
* Generic data column, the meaning is {@link #MIMETYPE} specific, used for * 通用数据列，含义由{@link #MIMETYPE}指定，用于文本数据类型
* TEXT data type * <P> 类型: TEXT </P>
* <P> Type: TEXT </P>
*/ */
public static final String DATA3 = "data3"; public static final String DATA3 = "data3";
/** /**
* Generic data column, the meaning is {@link #MIMETYPE} specific, used for * 通用数据列，含义由{@link #MIMETYPE}指定，用于文本数据类型
* TEXT data type * <P> 类型: TEXT </P>
* <P> Type: TEXT </P>
*/ */
public static final String DATA4 = "data4"; public static final String DATA4 = "data4";
/** /**
* Generic data column, the meaning is {@link #MIMETYPE} specific, used for * 通用数据列，含义由{@link #MIMETYPE}指定，用于文本数据类型
* TEXT data type * <P> 类型: TEXT </P>
* <P> Type: TEXT </P>
*/ */
public static final String DATA5 = "data5"; public static final String DATA5 = "data5";
} }
// 文本笔记类，继承自DataColumns
public static final class TextNote implements DataColumns { public static final class TextNote implements DataColumns {
/** /**
* Mode to indicate the text in check list mode or not * 模式，指示文本是否处于复选列表模式
* <P> Type: Integer 1:check list mode 0: normal mode </P> * <P> 类型: Integer 1:复选列表模式 0:普通模式 </P>
*/ */
public static final String MODE = DATA1; public static final String MODE = DATA1;
// 复选列表模式常量
public static final int MODE_CHECK_LIST = 1; public static final int MODE_CHECK_LIST = 1;
// 内容类型
public static final String CONTENT_TYPE = "vnd.android.cursor.dir/text_note"; public static final String CONTENT_TYPE = "vnd.android.cursor.dir/text_note";
// 内容项类型
public static final String CONTENT_ITEM_TYPE = "vnd.android.cursor.item/text_note"; public static final String CONTENT_ITEM_TYPE = "vnd.android.cursor.item/text_note";
// 内容Uri
public static final Uri CONTENT_URI = Uri.parse("content://" + AUTHORITY + "/text_note"); public static final Uri CONTENT_URI = Uri.parse("content://" + AUTHORITY + "/text_note");
} }
// 通话记录类，继承自DataColumns
public static final class CallNote implements DataColumns { public static final class CallNote implements DataColumns {
/** /**
* Call date for this record * 此记录的通话日期
* <P> Type: INTEGER (long) </P> * <P> 类型: INTEGER (长整型) </P>
*/ */
public static final String CALL_DATE = DATA1; public static final String CALL_DATE = DATA1;
/** /**
* Phone number for this record * 此记录的电话号码
* <P> Type: TEXT </P> * <P> 类型: TEXT </P>
*/ */
public static final String PHONE_NUMBER = DATA3; public static final String PHONE_NUMBER = DATA3;
// 内容类型
public static final String CONTENT_TYPE = "vnd.android.cursor.dir/call_note"; public static final String CONTENT_TYPE = "vnd.android.cursor.dir/call_note";
// 内容项类型
public static final String CONTENT_ITEM_TYPE = "vnd.android.cursor.item/call_note"; public static final String CONTENT_ITEM_TYPE = "vnd.android.cursor.item/call_note";
// 内容Uri
public static final Uri CONTENT_URI = Uri.parse("content://" + AUTHORITY + "/call_note"); public static final Uri CONTENT_URI = Uri.parse("content://" + AUTHORITY + "/call_note");
} }
} }

401
src/net/micode/notes/data/NotesDatabaseHelper.java
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@ -1,17 +1,15 @@
/* /*
* Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net) * Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
* *
* Licensed under the Apache License, Version 2.0 (the "License"); * 受Apache许可证2.0版（"许可证"）的约束；
* you may not use this file except in compliance with the License. * 除非遵守许可证，否则不得使用此文件。
* You may obtain a copy of the License at * 您可以在以下网址获取许可证副本：
* *
* http://www.apache.org/licenses/LICENSE-2.0 * http://www.apache.org/licenses/LICENSE-2.0
* *
* Unless required by applicable law or agreed to in writing, software * 除非适用法律要求或书面同意，否则根据许可证分发的软件按"原样"分发，
* distributed under the License is distributed on an "AS IS" BASIS, * 不附带任何明示或暗示的保证或条件。
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * 请参阅许可证，了解管理权限和限制的具体语言。
* See the License for the specific language governing permissions and
* limitations under the License.
*/ */
package net.micode.notes.data; package net.micode.notes.data;
@ -28,196 +26,217 @@ import net.micode.notes.data.Notes.NoteColumns;
public class NotesDatabaseHelper extends SQLiteOpenHelper { public class NotesDatabaseHelper extends SQLiteOpenHelper {
// 数据库名称
private static final String DB_NAME = "note.db"; private static final String DB_NAME = "note.db";
// 数据库版本号
private static final int DB_VERSION = 4; private static final int DB_VERSION = 4;
// 表名接口定义
public interface TABLE { public interface TABLE {
public static final String NOTE = "note"; public static final String NOTE = "note"; // 笔记表
public static final String DATA = "data"; // 数据附表
public static final String DATA = "data";
} }
// 日志标签
private static final String TAG = "NotesDatabaseHelper"; private static final String TAG = "NotesDatabaseHelper";
// 单例实例
private static NotesDatabaseHelper mInstance; private static NotesDatabaseHelper mInstance;
// 创建笔记表的SQL语句
private static final String CREATE_NOTE_TABLE_SQL = private static final String CREATE_NOTE_TABLE_SQL =
"CREATE TABLE " + TABLE.NOTE + "(" + "CREATE TABLE " + TABLE.NOTE + "(" +
NoteColumns.ID + " INTEGER PRIMARY KEY," + NoteColumns.ID + " INTEGER PRIMARY KEY," + // 主键ID
NoteColumns.PARENT_ID + " INTEGER NOT NULL DEFAULT 0," + NoteColumns.PARENT_ID + " INTEGER NOT NULL DEFAULT 0," + // 父文件夹ID
NoteColumns.ALERTED_DATE + " INTEGER NOT NULL DEFAULT 0," + NoteColumns.ALERTED_DATE + " INTEGER NOT NULL DEFAULT 0," +// 提醒日期
NoteColumns.BG_COLOR_ID + " INTEGER NOT NULL DEFAULT 0," + NoteColumns.BG_COLOR_ID + " INTEGER NOT NULL DEFAULT 0," + // 背景颜色ID
NoteColumns.CREATED_DATE + " INTEGER NOT NULL DEFAULT (strftime('%s','now') * 1000)," + // 创建时间（默认值为当前时间戳，单位毫秒）
NoteColumns.HAS_ATTACHMENT + " INTEGER NOT NULL DEFAULT 0," + NoteColumns.CREATED_DATE + " INTEGER NOT NULL DEFAULT (strftime('%s','now') * 1000)," +
NoteColumns.MODIFIED_DATE + " INTEGER NOT NULL DEFAULT (strftime('%s','now') * 1000)," + NoteColumns.HAS_ATTACHMENT + " INTEGER NOT NULL DEFAULT 0," + // 是否有附件
NoteColumns.NOTES_COUNT + " INTEGER NOT NULL DEFAULT 0," + // 修改时间（默认值为当前时间戳，单位毫秒）
NoteColumns.SNIPPET + " TEXT NOT NULL DEFAULT ''," + NoteColumns.MODIFIED_DATE + " INTEGER NOT NULL DEFAULT (strftime('%s','now') * 1000)," +
NoteColumns.TYPE + " INTEGER NOT NULL DEFAULT 0," + NoteColumns.NOTES_COUNT + " INTEGER NOT NULL DEFAULT 0," + // 子笔记数量
NoteColumns.WIDGET_ID + " INTEGER NOT NULL DEFAULT 0," + NoteColumns.SNIPPET + " TEXT NOT NULL DEFAULT ''," + // 内容摘要/文件夹名称
NoteColumns.WIDGET_TYPE + " INTEGER NOT NULL DEFAULT -1," + NoteColumns.TYPE + " INTEGER NOT NULL DEFAULT 0," + // 类型（笔记/文件夹/系统）
NoteColumns.SYNC_ID + " INTEGER NOT NULL DEFAULT 0," + NoteColumns.WIDGET_ID + " INTEGER NOT NULL DEFAULT 0," + // 小部件ID
NoteColumns.LOCAL_MODIFIED + " INTEGER NOT NULL DEFAULT 0," + NoteColumns.WIDGET_TYPE + " INTEGER NOT NULL DEFAULT -1," +// 小部件类型
NoteColumns.ORIGIN_PARENT_ID + " INTEGER NOT NULL DEFAULT 0," + NoteColumns.SYNC_ID + " INTEGER NOT NULL DEFAULT 0," + // 同步ID
NoteColumns.GTASK_ID + " TEXT NOT NULL DEFAULT ''," + NoteColumns.LOCAL_MODIFIED + " INTEGER NOT NULL DEFAULT 0," + // 本地修改标记
NoteColumns.VERSION + " INTEGER NOT NULL DEFAULT 0" + NoteColumns.ORIGIN_PARENT_ID + " INTEGER NOT NULL DEFAULT 0," + // 原始父ID
")"; NoteColumns.GTASK_ID + " TEXT NOT NULL DEFAULT ''," + // Google任务ID
NoteColumns.VERSION + " INTEGER NOT NULL DEFAULT 0" + // 版本号
")";
// 创建数据附表的SQL语句
private static final String CREATE_DATA_TABLE_SQL = private static final String CREATE_DATA_TABLE_SQL =
"CREATE TABLE " + TABLE.DATA + "(" + "CREATE TABLE " + TABLE.DATA + "(" +
DataColumns.ID + " INTEGER PRIMARY KEY," + DataColumns.ID + " INTEGER PRIMARY KEY," + // 主键ID
DataColumns.MIME_TYPE + " TEXT NOT NULL," + DataColumns.MIME_TYPE + " TEXT NOT NULL," + // MIME类型
DataColumns.NOTE_ID + " INTEGER NOT NULL DEFAULT 0," + DataColumns.NOTE_ID + " INTEGER NOT NULL DEFAULT 0," + // 所属笔记ID
NoteColumns.CREATED_DATE + " INTEGER NOT NULL DEFAULT (strftime('%s','now') * 1000)," + // 创建时间（默认值为当前时间戳，单位毫秒）
NoteColumns.MODIFIED_DATE + " INTEGER NOT NULL DEFAULT (strftime('%s','now') * 1000)," + NoteColumns.CREATED_DATE + " INTEGER NOT NULL DEFAULT (strftime('%s','now') * 1000)," +
DataColumns.CONTENT + " TEXT NOT NULL DEFAULT ''," + // 修改时间（默认值为当前时间戳，单位毫秒）
DataColumns.DATA1 + " INTEGER," + NoteColumns.MODIFIED_DATE + " INTEGER NOT NULL DEFAULT (strftime('%s','now') * 1000)," +
DataColumns.DATA2 + " INTEGER," + DataColumns.CONTENT + " TEXT NOT NULL DEFAULT ''," + // 内容
DataColumns.DATA3 + " TEXT NOT NULL DEFAULT ''," + DataColumns.DATA1 + " INTEGER," + // 通用数据1（整型）
DataColumns.DATA4 + " TEXT NOT NULL DEFAULT ''," + DataColumns.DATA2 + " INTEGER," + // 通用数据2（整型）
DataColumns.DATA5 + " TEXT NOT NULL DEFAULT ''" + DataColumns.DATA3 + " TEXT NOT NULL DEFAULT ''," + // 通用数据3（文本）
")"; DataColumns.DATA4 + " TEXT NOT NULL DEFAULT ''," + // 通用数据4（文本）
DataColumns.DATA5 + " TEXT NOT NULL DEFAULT ''" + // 通用数据5（文本）
")";
// 创建数据附表NOTE_ID索引的SQL语句
private static final String CREATE_DATA_NOTE_ID_INDEX_SQL = private static final String CREATE_DATA_NOTE_ID_INDEX_SQL =
"CREATE INDEX IF NOT EXISTS note_id_index ON " + "CREATE INDEX IF NOT EXISTS note_id_index ON " +
TABLE.DATA + "(" + DataColumns.NOTE_ID + ");"; TABLE.DATA + "(" + DataColumns.NOTE_ID + ");"; // 按所属笔记ID创建索引
/** /**
* Increase folder's note count when move note to the folder * 触发器：当笔记更新父文件夹时，增加目标文件夹的笔记数量
*/ */
private static final String NOTE_INCREASE_FOLDER_COUNT_ON_UPDATE_TRIGGER = private static final String NOTE_INCREASE_FOLDER_COUNT_ON_UPDATE_TRIGGER =
"CREATE TRIGGER increase_folder_count_on_update "+ "CREATE TRIGGER increase_folder_count_on_update "+
" AFTER UPDATE OF " + NoteColumns.PARENT_ID + " ON " + TABLE.NOTE + " AFTER UPDATE OF " + NoteColumns.PARENT_ID + " ON " + TABLE.NOTE +
" BEGIN " + " BEGIN " +
" UPDATE " + TABLE.NOTE + " UPDATE " + TABLE.NOTE +
" SET " + NoteColumns.NOTES_COUNT + "=" + NoteColumns.NOTES_COUNT + " + 1" + " SET " + NoteColumns.NOTES_COUNT + "=" + NoteColumns.NOTES_COUNT + " + 1" +
" WHERE " + NoteColumns.ID + "=new." + NoteColumns.PARENT_ID + ";" + " WHERE " + NoteColumns.ID + "=new." + NoteColumns.PARENT_ID + ";" + // new表示更新后的行
" END"; " END";
/** /**
* Decrease folder's note count when move note from folder * 触发器：当笔记更新父文件夹时，减少原文件夹的笔记数量
*/ */
private static final String NOTE_DECREASE_FOLDER_COUNT_ON_UPDATE_TRIGGER = private static final String NOTE_DECREASE_FOLDER_COUNT_ON_UPDATE_TRIGGER =
"CREATE TRIGGER decrease_folder_count_on_update " + "CREATE TRIGGER decrease_folder_count_on_update " +
" AFTER UPDATE OF " + NoteColumns.PARENT_ID + " ON " + TABLE.NOTE + " AFTER UPDATE OF " + NoteColumns.PARENT_ID + " ON " + TABLE.NOTE +
" BEGIN " + " BEGIN " +
" UPDATE " + TABLE.NOTE + " UPDATE " + TABLE.NOTE +
" SET " + NoteColumns.NOTES_COUNT + "=" + NoteColumns.NOTES_COUNT + "-1" + " SET " + NoteColumns.NOTES_COUNT + "=" + NoteColumns.NOTES_COUNT + "-1" +
" WHERE " + NoteColumns.ID + "=old." + NoteColumns.PARENT_ID + " WHERE " + NoteColumns.ID + "=old." + NoteColumns.PARENT_ID + // old表示更新前的行
" AND " + NoteColumns.NOTES_COUNT + ">0" + ";" + " AND " + NoteColumns.NOTES_COUNT + ">0" + ";" +
" END"; " END";
/** /**
* Increase folder's note count when insert new note to the folder * 触发器：当插入新笔记时，增加目标文件夹的笔记数量
*/ */
private static final String NOTE_INCREASE_FOLDER_COUNT_ON_INSERT_TRIGGER = private static final String NOTE_INCREASE_FOLDER_COUNT_ON_INSERT_TRIGGER =
"CREATE TRIGGER increase_folder_count_on_insert " + "CREATE TRIGGER increase_folder_count_on_insert " +
" AFTER INSERT ON " + TABLE.NOTE + " AFTER INSERT ON " + TABLE.NOTE +
" BEGIN " + " BEGIN " +
" UPDATE " + TABLE.NOTE + " UPDATE " + TABLE.NOTE +
" SET " + NoteColumns.NOTES_COUNT + "=" + NoteColumns.NOTES_COUNT + " + 1" + " SET " + NoteColumns.NOTES_COUNT + "=" + NoteColumns.NOTES_COUNT + " + 1" +
" WHERE " + NoteColumns.ID + "=new." + NoteColumns.PARENT_ID + ";" + " WHERE " + NoteColumns.ID + "=new." + NoteColumns.PARENT_ID + ";" +
" END"; " END";
/** /**
* Decrease folder's note count when delete note from the folder * 触发器：当删除笔记时，减少原文件夹的笔记数量
*/ */
private static final String NOTE_DECREASE_FOLDER_COUNT_ON_DELETE_TRIGGER = private static final String NOTE_DECREASE_FOLDER_COUNT_ON_DELETE_TRIGGER =
"CREATE TRIGGER decrease_folder_count_on_delete " + "CREATE TRIGGER decrease_folder_count_on_delete " +
" AFTER DELETE ON " + TABLE.NOTE + " AFTER DELETE ON " + TABLE.NOTE +
" BEGIN " + " BEGIN " +
" UPDATE " + TABLE.NOTE + " UPDATE " + TABLE.NOTE +
" SET " + NoteColumns.NOTES_COUNT + "=" + NoteColumns.NOTES_COUNT + "-1" + " SET " + NoteColumns.NOTES_COUNT + "=" + NoteColumns.NOTES_COUNT + "-1" +
" WHERE " + NoteColumns.ID + "=old." + NoteColumns.PARENT_ID + " WHERE " + NoteColumns.ID + "=old." + NoteColumns.PARENT_ID +
" AND " + NoteColumns.NOTES_COUNT + ">0;" + " AND " + NoteColumns.NOTES_COUNT + ">0;" +
" END"; " END";
/** /**
* Update note's content when insert data with type {@link DataConstants#NOTE} * 触发器：当插入文本笔记数据时，更新笔记的内容摘要
*/ */
private static final String DATA_UPDATE_NOTE_CONTENT_ON_INSERT_TRIGGER = private static final String DATA_UPDATE_NOTE_CONTENT_ON_INSERT_TRIGGER =
"CREATE TRIGGER update_note_content_on_insert " + "CREATE TRIGGER update_note_content_on_insert " +
" AFTER INSERT ON " + TABLE.DATA + " AFTER INSERT ON " + TABLE.DATA +
" WHEN new." + DataColumns.MIME_TYPE + "='" + DataConstants.NOTE + "'" + " WHEN new." + DataColumns.MIME_TYPE + "='" + DataConstants.NOTE + "'" + // 仅处理文本笔记类型
" BEGIN" + " BEGIN" +
" UPDATE " + TABLE.NOTE + " UPDATE " + TABLE.NOTE +
" SET " + NoteColumns.SNIPPET + "=new." + DataColumns.CONTENT + " SET " + NoteColumns.SNIPPET + "=new." + DataColumns.CONTENT + // 用新数据的内容更新笔记摘要
" WHERE " + NoteColumns.ID + "=new." + DataColumns.NOTE_ID + ";" + " WHERE " + NoteColumns.ID + "=new." + DataColumns.NOTE_ID + ";" +
" END"; " END";
/** /**
* Update note's content when data with {@link DataConstants#NOTE} type has changed * 触发器：当更新文本笔记数据时，更新笔记的内容摘要
*/ */
private static final String DATA_UPDATE_NOTE_CONTENT_ON_UPDATE_TRIGGER = private static final String DATA_UPDATE_NOTE_CONTENT_ON_UPDATE_TRIGGER =
"CREATE TRIGGER update_note_content_on_update " + "CREATE TRIGGER update_note_content_on_update " +
" AFTER UPDATE ON " + TABLE.DATA + " AFTER UPDATE ON " + TABLE.DATA +
" WHEN old." + DataColumns.MIME_TYPE + "='" + DataConstants.NOTE + "'" + " WHEN old." + DataColumns.MIME_TYPE + "='" + DataConstants.NOTE + "'" + // 仅处理文本笔记类型
" BEGIN" + " BEGIN" +
" UPDATE " + TABLE.NOTE + " UPDATE " + TABLE.NOTE +
" SET " + NoteColumns.SNIPPET + "=new." + DataColumns.CONTENT + " SET " + NoteColumns.SNIPPET + "=new." + DataColumns.CONTENT + // 用新数据的内容更新笔记摘要
" WHERE " + NoteColumns.ID + "=new." + DataColumns.NOTE_ID + ";" + " WHERE " + NoteColumns.ID + "=new." + DataColumns.NOTE_ID + ";" +
" END"; " END";
/** /**
* Update note's content when data with {@link DataConstants#NOTE} type has deleted * 触发器：当删除文本笔记数据时，清空笔记的内容摘要
*/ */
private static final String DATA_UPDATE_NOTE_CONTENT_ON_DELETE_TRIGGER = private static final String DATA_UPDATE_NOTE_CONTENT_ON_DELETE_TRIGGER =
"CREATE TRIGGER update_note_content_on_delete " + "CREATE TRIGGER update_note_content_on_delete " +
" AFTER delete ON " + TABLE.DATA + " AFTER DELETE ON " + TABLE.DATA +
" WHEN old." + DataColumns.MIME_TYPE + "='" + DataConstants.NOTE + "'" + " WHEN old." + DataColumns.MIME_TYPE + "='" + DataConstants.NOTE + "'" + // 仅处理文本笔记类型
" BEGIN" + " BEGIN" +
" UPDATE " + TABLE.NOTE + " UPDATE " + TABLE.NOTE +
" SET " + NoteColumns.SNIPPET + "=''" + " SET " + NoteColumns.SNIPPET + "=''" + // 清空摘要
" WHERE " + NoteColumns.ID + "=old." + DataColumns.NOTE_ID + ";" + " WHERE " + NoteColumns.ID + "=old." + DataColumns.NOTE_ID + ";" +
" END"; " END";
/** /**
* Delete datas belong to note which has been deleted * 触发器：当删除笔记时，级联删除该笔记的所有附属数据
*/ */
private static final String NOTE_DELETE_DATA_ON_DELETE_TRIGGER = private static final String NOTE_DELETE_DATA_ON_DELETE_TRIGGER =
"CREATE TRIGGER delete_data_on_delete " + "CREATE TRIGGER delete_data_on_delete " +
" AFTER DELETE ON " + TABLE.NOTE + " AFTER DELETE ON " + TABLE.NOTE +
" BEGIN" + " BEGIN" +
" DELETE FROM " + TABLE.DATA + " DELETE FROM " + TABLE.DATA +
" WHERE " + DataColumns.NOTE_ID + "=old." + NoteColumns.ID + ";" + " WHERE " + DataColumns.NOTE_ID + "=old." + NoteColumns.ID + ";" + // 删除关联数据
" END"; " END";
/** /**
* Delete notes belong to folder which has been deleted * 触发器：当删除文件夹时，级联删除该文件夹下的所有笔记
*/ */
private static final String FOLDER_DELETE_NOTES_ON_DELETE_TRIGGER = private static final String FOLDER_DELETE_NOTES_ON_DELETE_TRIGGER =
"CREATE TRIGGER folder_delete_notes_on_delete " + "CREATE TRIGGER folder_delete_notes_on_delete " +
" AFTER DELETE ON " + TABLE.NOTE + " AFTER DELETE ON " + TABLE.NOTE +
" BEGIN" + " BEGIN" +
" DELETE FROM " + TABLE.NOTE + " DELETE FROM " + TABLE.NOTE +
" WHERE " + NoteColumns.PARENT_ID + "=old." + NoteColumns.ID + ";" + " WHERE " + NoteColumns.PARENT_ID + "=old." + NoteColumns.ID + ";" + // 删除子笔记
" END"; " END";
/** /**
* Move notes belong to folder which has been moved to trash folder * 触发器：当文件夹被移动到回收站时，递归移动其子笔记到回收站
*/ */
private static final String FOLDER_MOVE_NOTES_ON_TRASH_TRIGGER = private static final String FOLDER_MOVE_NOTES_ON_TRASH_TRIGGER =
"CREATE TRIGGER folder_move_notes_on_trash " + "CREATE TRIGGER folder_move_notes_on_trash " +
" AFTER UPDATE ON " + TABLE.NOTE + " AFTER UPDATE ON " + TABLE.NOTE +
" WHEN new." + NoteColumns.PARENT_ID + "=" + Notes.ID_TRASH_FOLER + " WHEN new." + NoteColumns.PARENT_ID + "=" + Notes.ID_TRASH_FOLER + // 父ID变为回收站ID
" BEGIN" + " BEGIN" +
" UPDATE " + TABLE.NOTE + " UPDATE " + TABLE.NOTE +
" SET " + NoteColumns.PARENT_ID + "=" + Notes.ID_TRASH_FOLER + " SET " + NoteColumns.PARENT_ID + "=" + Notes.ID_TRASH_FOLER + // 子笔记的父ID同步为回收站ID
" WHERE " + NoteColumns.PARENT_ID + "=old." + NoteColumns.ID + ";" + " WHERE " + NoteColumns.PARENT_ID + "=old." + NoteColumns.ID + ";" + // 原父ID为当前文件夹ID
" END"; " END";
// 构造方法：初始化数据库帮助类
public NotesDatabaseHelper(Context context) { public NotesDatabaseHelper(Context context) {
super(context, DB_NAME, null, DB_VERSION); super(context, DB_NAME, null, DB_VERSION);
} }
/**
* 创建笔记表及相关数据
* @param db 数据库实例
*/
public void createNoteTable(SQLiteDatabase db) { public void createNoteTable(SQLiteDatabase db) {
db.execSQL(CREATE_NOTE_TABLE_SQL); db.execSQL(CREATE_NOTE_TABLE_SQL); // 创建笔记表
reCreateNoteTableTriggers(db); reCreateNoteTableTriggers(db); // 创建相关触发器
createSystemFolder(db); createSystemFolder(db); // 创建系统默认文件夹
Log.d(TAG, "note table has been created"); Log.d(TAG, "note table has been created");
} }
/**
* 重建笔记表相关触发器（先删除旧触发器再创建新触发器）
* @param db 数据库实例
*/
private void reCreateNoteTableTriggers(SQLiteDatabase db) { private void reCreateNoteTableTriggers(SQLiteDatabase db) {
// 删除旧触发器
db.execSQL("DROP TRIGGER IF EXISTS increase_folder_count_on_update"); db.execSQL("DROP TRIGGER IF EXISTS increase_folder_count_on_update");
db.execSQL("DROP TRIGGER IF EXISTS decrease_folder_count_on_update"); db.execSQL("DROP TRIGGER IF EXISTS decrease_folder_count_on_update");
db.execSQL("DROP TRIGGER IF EXISTS decrease_folder_count_on_delete"); db.execSQL("DROP TRIGGER IF EXISTS decrease_folder_count_on_delete");
@ -226,6 +245,7 @@ public class NotesDatabaseHelper extends SQLiteOpenHelper {
db.execSQL("DROP TRIGGER IF EXISTS folder_delete_notes_on_delete"); db.execSQL("DROP TRIGGER IF EXISTS folder_delete_notes_on_delete");
db.execSQL("DROP TRIGGER IF EXISTS folder_move_notes_on_trash"); db.execSQL("DROP TRIGGER IF EXISTS folder_move_notes_on_trash");
// 创建新触发器
db.execSQL(NOTE_INCREASE_FOLDER_COUNT_ON_UPDATE_TRIGGER); db.execSQL(NOTE_INCREASE_FOLDER_COUNT_ON_UPDATE_TRIGGER);
db.execSQL(NOTE_DECREASE_FOLDER_COUNT_ON_UPDATE_TRIGGER); db.execSQL(NOTE_DECREASE_FOLDER_COUNT_ON_UPDATE_TRIGGER);
db.execSQL(NOTE_DECREASE_FOLDER_COUNT_ON_DELETE_TRIGGER); db.execSQL(NOTE_DECREASE_FOLDER_COUNT_ON_DELETE_TRIGGER);
@ -235,58 +255,69 @@ public class NotesDatabaseHelper extends SQLiteOpenHelper {
db.execSQL(FOLDER_MOVE_NOTES_ON_TRASH_TRIGGER); db.execSQL(FOLDER_MOVE_NOTES_ON_TRASH_TRIGGER);
} }
/**
* 创建系统默认文件夹（通话记录、根目录、临时文件夹、回收站）
* @param db 数据库实例
*/
private void createSystemFolder(SQLiteDatabase db) { private void createSystemFolder(SQLiteDatabase db) {
ContentValues values = new ContentValues(); ContentValues values = new ContentValues();
/** // 创建通话记录文件夹
* call record foler for call notes
*/
values.put(NoteColumns.ID, Notes.ID_CALL_RECORD_FOLDER); values.put(NoteColumns.ID, Notes.ID_CALL_RECORD_FOLDER);
values.put(NoteColumns.TYPE, Notes.TYPE_SYSTEM); values.put(NoteColumns.TYPE, Notes.TYPE_SYSTEM);
db.insert(TABLE.NOTE, null, values); db.insert(TABLE.NOTE, null, values);
/** // 创建根文件夹
* root folder which is default folder
*/
values.clear(); values.clear();
values.put(NoteColumns.ID, Notes.ID_ROOT_FOLDER); values.put(NoteColumns.ID, Notes.ID_ROOT_FOLDER);
values.put(NoteColumns.TYPE, Notes.TYPE_SYSTEM); values.put(NoteColumns.TYPE, Notes.TYPE_SYSTEM);
db.insert(TABLE.NOTE, null, values); db.insert(TABLE.NOTE, null, values);
/** // 创建临时文件夹
* temporary folder which is used for moving note
*/
values.clear(); values.clear();
values.put(NoteColumns.ID, Notes.ID_TEMPARAY_FOLDER); values.put(NoteColumns.ID, Notes.ID_TEMPARAY_FOLDER);
values.put(NoteColumns.TYPE, Notes.TYPE_SYSTEM); values.put(NoteColumns.TYPE, Notes.TYPE_SYSTEM);
db.insert(TABLE.NOTE, null, values); db.insert(TABLE.NOTE, null, values);
/** // 创建回收站文件夹
* create trash folder
*/
values.clear(); values.clear();
values.put(NoteColumns.ID, Notes.ID_TRASH_FOLER); values.put(NoteColumns.ID, Notes.ID_TRASH_FOLER);
values.put(NoteColumns.TYPE, Notes.TYPE_SYSTEM); values.put(NoteColumns.TYPE, Notes.TYPE_SYSTEM);
db.insert(TABLE.NOTE, null, values); db.insert(TABLE.NOTE, null, values);
} }
/**
* 创建数据附表及相关索引和触发器
* @param db 数据库实例
*/
public void createDataTable(SQLiteDatabase db) { public void createDataTable(SQLiteDatabase db) {
db.execSQL(CREATE_DATA_TABLE_SQL); db.execSQL(CREATE_DATA_TABLE_SQL); // 创建数据附表
reCreateDataTableTriggers(db); reCreateDataTableTriggers(db); // 创建相关触发器
db.execSQL(CREATE_DATA_NOTE_ID_INDEX_SQL); db.execSQL(CREATE_DATA_NOTE_ID_INDEX_SQL); // 创建索引
Log.d(TAG, "data table has been created"); Log.d(TAG, "data table has been created");
} }
/**
* 重建数据附表相关触发器（先删除旧触发器再创建新触发器）
* @param db 数据库实例
*/
private void reCreateDataTableTriggers(SQLiteDatabase db) { private void reCreateDataTableTriggers(SQLiteDatabase db) {
// 删除旧触发器
db.execSQL("DROP TRIGGER IF EXISTS update_note_content_on_insert"); db.execSQL("DROP TRIGGER IF EXISTS update_note_content_on_insert");
db.execSQL("DROP TRIGGER IF EXISTS update_note_content_on_update"); db.execSQL("DROP TRIGGER IF EXISTS update_note_content_on_update");
db.execSQL("DROP TRIGGER IF EXISTS update_note_content_on_delete"); db.execSQL("DROP TRIGGER IF EXISTS update_note_content_on_delete");
// 创建新触发器
db.execSQL(DATA_UPDATE_NOTE_CONTENT_ON_INSERT_TRIGGER); db.execSQL(DATA_UPDATE_NOTE_CONTENT_ON_INSERT_TRIGGER);
db.execSQL(DATA_UPDATE_NOTE_CONTENT_ON_UPDATE_TRIGGER); db.execSQL(DATA_UPDATE_NOTE_CONTENT_ON_UPDATE_TRIGGER);
db.execSQL(DATA_UPDATE_NOTE_CONTENT_ON_DELETE_TRIGGER); db.execSQL(DATA_UPDATE_NOTE_CONTENT_ON_DELETE_TRIGGER);
} }
/**
* 获取单例实例（线程安全）
* @param context 上下文
* @return NotesDatabaseHelper实例
*/
static synchronized NotesDatabaseHelper getInstance(Context context) { static synchronized NotesDatabaseHelper getInstance(Context context) {
if (mInstance == null) { if (mInstance == null) {
mInstance = new NotesDatabaseHelper(context); mInstance = new NotesDatabaseHelper(context);
@ -294,69 +325,11 @@ public class NotesDatabaseHelper extends SQLiteOpenHelper {
return mInstance; return mInstance;
} }
/**
* 数据库创建回调（首次创建时调用）
* @param db 数据库实例
*/
@Override @Override
public void onCreate(SQLiteDatabase db) { public void onCreate(SQLiteDatabase db) {
createNoteTable(db); createNoteTable(db); // 创建笔记表及相关数据
createDataTable(db); createDataTable(db); // 创建数据附表及
}
@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
boolean reCreateTriggers = false;
boolean skipV2 = false;
if (oldVersion == 1) {
upgradeToV2(db);
skipV2 = true; // this upgrade including the upgrade from v2 to v3
oldVersion++;
}
if (oldVersion == 2 && !skipV2) {
upgradeToV3(db);
reCreateTriggers = true;
oldVersion++;
}
if (oldVersion == 3) {
upgradeToV4(db);
oldVersion++;
}
if (reCreateTriggers) {
reCreateNoteTableTriggers(db);
reCreateDataTableTriggers(db);
}
if (oldVersion != newVersion) {
throw new IllegalStateException("Upgrade notes database to version " + newVersion
+ "fails");
}
}
private void upgradeToV2(SQLiteDatabase db) {
db.execSQL("DROP TABLE IF EXISTS " + TABLE.NOTE);
db.execSQL("DROP TABLE IF EXISTS " + TABLE.DATA);
createNoteTable(db);
createDataTable(db);
}
private void upgradeToV3(SQLiteDatabase db) {
// drop unused triggers
db.execSQL("DROP TRIGGER IF EXISTS update_note_modified_date_on_insert");
db.execSQL("DROP TRIGGER IF EXISTS update_note_modified_date_on_delete");
db.execSQL("DROP TRIGGER IF EXISTS update_note_modified_date_on_update");
// add a column for gtask id
db.execSQL("ALTER TABLE " + TABLE.NOTE + " ADD COLUMN " + NoteColumns.GTASK_ID
+ " TEXT NOT NULL DEFAULT ''");
// add a trash system folder
ContentValues values = new ContentValues();
values.put(NoteColumns.ID, Notes.ID_TRASH_FOLER);
values.put(NoteColumns.TYPE, Notes.TYPE_SYSTEM);
db.insert(TABLE.NOTE, null, values);
}
private void upgradeToV4(SQLiteDatabase db) {
db.execSQL("ALTER TABLE " + TABLE.NOTE + " ADD COLUMN " + NoteColumns.VERSION
+ " INTEGER NOT NULL DEFAULT 0");
}
}

195
src/net/micode/notes/data/NotesProvider.java
Unescape View File

@ -1,17 +1,15 @@
/* /*
* Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net) * Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
* *
* Licensed under the Apache License, Version 2.0 (the "License"); * 受Apache许可证2.0版（"许可证"）的约束；
* you may not use this file except in compliance with the License. * 除非遵守许可证，否则不得使用此文件。
* You may obtain a copy of the License at * 您可以在以下网址获取许可证副本：
* *
* http://www.apache.org/licenses/LICENSE-2.0 * http://www.apache.org/licenses/LICENSE-2.0
* *
* Unless required by applicable law or agreed to in writing, software * 除非适用法律要求或书面同意，否则根据许可证分发的软件按"原样"分发，
* distributed under the License is distributed on an "AS IS" BASIS, * 不附带任何明示或暗示的保证或条件。
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * 请参阅许可证，了解管理权限和限制的具体语言。
* See the License for the specific language governing permissions and
* limitations under the License.
*/ */
package net.micode.notes.data; package net.micode.notes.data;
@ -36,88 +34,121 @@ import net.micode.notes.data.NotesDatabaseHelper.TABLE;
public class NotesProvider extends ContentProvider { public class NotesProvider extends ContentProvider {
// Uri匹配器，用于解析不同的URI请求
private static final UriMatcher mMatcher; private static final UriMatcher mMatcher;
// 数据库帮助类实例，用于管理数据库连接
private NotesDatabaseHelper mHelper; private NotesDatabaseHelper mHelper;
// 日志标签
private static final String TAG = "NotesProvider"; private static final String TAG = "NotesProvider";
private static final int URI_NOTE = 1; // URI匹配常量定义
private static final int URI_NOTE_ITEM = 2; private static final int URI_NOTE = 1; // 笔记集合URI
private static final int URI_DATA = 3; private static final int URI_NOTE_ITEM = 2; // 单条笔记URI
private static final int URI_DATA_ITEM = 4; private static final int URI_DATA = 3; // 数据集合URI
private static final int URI_DATA_ITEM = 4; // 单条数据URI
private static final int URI_SEARCH = 5; private static final int URI_SEARCH = 5; // 搜索URI
private static final int URI_SEARCH_SUGGEST = 6; private static final int URI_SEARCH_SUGGEST = 6; // 搜索建议URI
static { static {
// 初始化Uri匹配器
mMatcher = new UriMatcher(UriMatcher.NO_MATCH); mMatcher = new UriMatcher(UriMatcher.NO_MATCH);
// 匹配笔记集合URI（content://micode_notes/note）
mMatcher.addURI(Notes.AUTHORITY, "note", URI_NOTE); mMatcher.addURI(Notes.AUTHORITY, "note", URI_NOTE);
// 匹配单条笔记URI（content://micode_notes/note/123）
mMatcher.addURI(Notes.AUTHORITY, "note/#", URI_NOTE_ITEM); mMatcher.addURI(Notes.AUTHORITY, "note/#", URI_NOTE_ITEM);
// 匹配数据集合URI（content://micode_notes/data）
mMatcher.addURI(Notes.AUTHORITY, "data", URI_DATA); mMatcher.addURI(Notes.AUTHORITY, "data", URI_DATA);
// 匹配单条数据URI（content://micode_notes/data/456）
mMatcher.addURI(Notes.AUTHORITY, "data/#", URI_DATA_ITEM); mMatcher.addURI(Notes.AUTHORITY, "data/#", URI_DATA_ITEM);
// 匹配搜索URI（content://micode_notes/search）
mMatcher.addURI(Notes.AUTHORITY, "search", URI_SEARCH); mMatcher.addURI(Notes.AUTHORITY, "search", URI_SEARCH);
// 匹配搜索建议URI（支持带查询参数的路径）
mMatcher.addURI(Notes.AUTHORITY, SearchManager.SUGGEST_URI_PATH_QUERY, URI_SEARCH_SUGGEST); mMatcher.addURI(Notes.AUTHORITY, SearchManager.SUGGEST_URI_PATH_QUERY, URI_SEARCH_SUGGEST);
mMatcher.addURI(Notes.AUTHORITY, SearchManager.SUGGEST_URI_PATH_QUERY + "/*", URI_SEARCH_SUGGEST); mMatcher.addURI(Notes.AUTHORITY, SearchManager.SUGGEST_URI_PATH_QUERY + "/*", URI_SEARCH_SUGGEST);
} }
/** /**
* x'0A' represents the '\n' character in sqlite. For title and content in the search result, * 搜索投影定义：
* we will trim '\n' and white space in order to show more information. * x'0A'代表SQLite中的换行符'\n'，搜索结果中的标题和内容会去除换行符和空格以显示更多信息。
* 包含搜索结果所需的字段映射，如ID、搜索建议文本、图标、Intent动作等。
*/ */
private static final String NOTES_SEARCH_PROJECTION = NoteColumns.ID + "," private static final String NOTES_SEARCH_PROJECTION = NoteColumns.ID + ","
+ NoteColumns.ID + " AS " + SearchManager.SUGGEST_COLUMN_INTENT_EXTRA_DATA + "," + NoteColumns.ID + " AS " + SearchManager.SUGGEST_COLUMN_INTENT_EXTRA_DATA + ","
+ "TRIM(REPLACE(" + NoteColumns.SNIPPET + ", x'0A','')) AS " + SearchManager.SUGGEST_COLUMN_TEXT_1 + "," + "TRIM(REPLACE(" + NoteColumns.SNIPPET + ", x'0A','')) AS " + SearchManager.SUGGEST_COLUMN_TEXT_1 + ","
+ "TRIM(REPLACE(" + NoteColumns.SNIPPET + ", x'0A','')) AS " + SearchManager.SUGGEST_COLUMN_TEXT_2 + "," + "TRIM(REPLACE(" + NoteColumns.SNIPPET + ", x'0A','')) AS " + SearchManager.SUGGEST_COLUMN_TEXT_2 + ","
+ R.drawable.search_result + " AS " + SearchManager.SUGGEST_COLUMN_ICON_1 + "," + R.drawable.search_result + " AS " + SearchManager.SUGGEST_COLUMN_ICON_1 + ","
+ "'" + Intent.ACTION_VIEW + "' AS " + SearchManager.SUGGEST_COLUMN_INTENT_ACTION + "," + "'" + Intent.ACTION_VIEW + "' AS " + SearchManager.SUGGEST_COLUMN_INTENT_ACTION + ","
+ "'" + Notes.TextNote.CONTENT_TYPE + "' AS " + SearchManager.SUGGEST_COLUMN_INTENT_DATA; + "'" + Notes.TextNote.CONTENT_TYPE + "' AS " + SearchManager.SUGGEST_COLUMN_INTENT_DATA;
// 搜索查询语句：从笔记表中查询符合条件的记录（排除回收站和非笔记类型）
private static String NOTES_SNIPPET_SEARCH_QUERY = "SELECT " + NOTES_SEARCH_PROJECTION private static String NOTES_SNIPPET_SEARCH_QUERY = "SELECT " + NOTES_SEARCH_PROJECTION
+ " FROM " + TABLE.NOTE + " FROM " + TABLE.NOTE
+ " WHERE " + NoteColumns.SNIPPET + " LIKE ?" + " WHERE " + NoteColumns.SNIPPET + " LIKE ?"
+ " AND " + NoteColumns.PARENT_ID + "<>" + Notes.ID_TRASH_FOLER + " AND " + NoteColumns.PARENT_ID + "<>" + Notes.ID_TRASH_FOLER
+ " AND " + NoteColumns.TYPE + "=" + Notes.TYPE_NOTE; + " AND " + NoteColumns.TYPE + "=" + Notes.TYPE_NOTE;
/**
* 初始化内容提供器：创建数据库帮助类实例
* @return 是否初始化成功
*/
@Override @Override
public boolean onCreate() { public boolean onCreate() {
mHelper = NotesDatabaseHelper.getInstance(getContext()); mHelper = NotesDatabaseHelper.getInstance(getContext());
return true; return true;
} }
/**
* 处理查询请求
* @param uri 请求的URI
* @param projection 需要查询的列
* @param selection 查询条件
* @param selectionArgs 条件参数
* @param sortOrder 排序规则
* @return 查询结果Cursor
*/
@Override @Override
public Cursor query(Uri uri, String[] projection, String selection, String[] selectionArgs, public Cursor query(Uri uri, String[] projection, String selection, String[] selectionArgs,
String sortOrder) { String sortOrder) {
Cursor c = null; Cursor c = null;
SQLiteDatabase db = mHelper.getReadableDatabase(); SQLiteDatabase db = mHelper.getReadableDatabase();
String id = null; String id = null;
// 根据URI匹配结果执行不同的查询逻辑
switch (mMatcher.match(uri)) { switch (mMatcher.match(uri)) {
case URI_NOTE: case URI_NOTE:
c = db.query(TABLE.NOTE, projection, selection, selectionArgs, null, null, // 查询笔记集合
sortOrder); c = db.query(TABLE.NOTE, projection, selection, selectionArgs, null, null, sortOrder);
break; break;
case URI_NOTE_ITEM: case URI_NOTE_ITEM:
// 获取路径中的ID参数
id = uri.getPathSegments().get(1); id = uri.getPathSegments().get(1);
// 查询单条笔记（拼接条件：ID=指定值 + 可选条件）
c = db.query(TABLE.NOTE, projection, NoteColumns.ID + "=" + id c = db.query(TABLE.NOTE, projection, NoteColumns.ID + "=" + id
+ parseSelection(selection), selectionArgs, null, null, sortOrder); + parseSelection(selection), selectionArgs, null, null, sortOrder);
break; break;
case URI_DATA: case URI_DATA:
c = db.query(TABLE.DATA, projection, selection, selectionArgs, null, null, // 查询数据集合
sortOrder); c = db.query(TABLE.DATA, projection, selection, selectionArgs, null, null, sortOrder);
break; break;
case URI_DATA_ITEM: case URI_DATA_ITEM:
// 获取路径中的ID参数
id = uri.getPathSegments().get(1); id = uri.getPathSegments().get(1);
// 查询单条数据（拼接条件：ID=指定值 + 可选条件）
c = db.query(TABLE.DATA, projection, DataColumns.ID + "=" + id c = db.query(TABLE.DATA, projection, DataColumns.ID + "=" + id
+ parseSelection(selection), selectionArgs, null, null, sortOrder); + parseSelection(selection), selectionArgs, null, null, sortOrder);
break; break;
case URI_SEARCH: case URI_SEARCH:
case URI_SEARCH_SUGGEST: case URI_SEARCH_SUGGEST:
// 搜索请求不允许指定排序、投影等参数
if (sortOrder != null || projection != null) { if (sortOrder != null || projection != null) {
throw new IllegalArgumentException( throw new IllegalArgumentException(
"do not specify sortOrder, selection, selectionArgs, or projection" + "with this query"); "搜索查询不允许指定排序、投影、条件参数");
} }
String searchString = null; String searchString = null;
// 解析搜索关键词（从路径或查询参数中获取）
if (mMatcher.match(uri) == URI_SEARCH_SUGGEST) { if (mMatcher.match(uri) == URI_SEARCH_SUGGEST) {
if (uri.getPathSegments().size() > 1) { if (uri.getPathSegments().size() > 1) {
searchString = uri.getPathSegments().get(1); searchString = uri.getPathSegments().get(1);
@ -131,48 +162,62 @@ public class NotesProvider extends ContentProvider {
} }
try { try {
// 构造模糊查询条件（前后加%）
searchString = String.format("%%%s%%", searchString); searchString = String.format("%%%s%%", searchString);
c = db.rawQuery(NOTES_SNIPPET_SEARCH_QUERY, // 执行原生SQL查询（使用预定义的搜索语句）
new String[] { searchString }); c = db.rawQuery(NOTES_SNIPPET_SEARCH_QUERY, new String[] { searchString });
} catch (IllegalStateException ex) { } catch (IllegalStateException ex) {
Log.e(TAG, "got exception: " + ex.toString()); Log.e(TAG, "搜索查询异常: " + ex.toString());
} }
break; break;
default: default:
throw new IllegalArgumentException("Unknown URI " + uri); throw new IllegalArgumentException("未知URI: " + uri);
} }
// 设置通知URI，以便数据变化时通知观察者
if (c != null) { if (c != null) {
c.setNotificationUri(getContext().getContentResolver(), uri); c.setNotificationUri(getContext().getContentResolver(), uri);
} }
return c; return c;
} }
/**
* 处理插入请求
* @param uri 请求的URI
* @param values 要插入的内容值
* @return 插入后的URI（带自动生成的ID）
*/
@Override @Override
public Uri insert(Uri uri, ContentValues values) { public Uri insert(Uri uri, ContentValues values) {
SQLiteDatabase db = mHelper.getWritableDatabase(); SQLiteDatabase db = mHelper.getWritableDatabase();
long dataId = 0, noteId = 0, insertedId = 0; long dataId = 0, noteId = 0, insertedId = 0;
// 根据URI匹配结果执行不同的插入逻辑
switch (mMatcher.match(uri)) { switch (mMatcher.match(uri)) {
case URI_NOTE: case URI_NOTE:
// 插入笔记记录，返回自动生成的ID
insertedId = noteId = db.insert(TABLE.NOTE, null, values); insertedId = noteId = db.insert(TABLE.NOTE, null, values);
break; break;
case URI_DATA: case URI_DATA:
// 插入数据记录，需关联笔记ID（从values中获取）
if (values.containsKey(DataColumns.NOTE_ID)) { if (values.containsKey(DataColumns.NOTE_ID)) {
noteId = values.getAsLong(DataColumns.NOTE_ID); noteId = values.getAsLong(DataColumns.NOTE_ID);
} else { } else {
Log.d(TAG, "Wrong data format without note id:" + values.toString()); Log.d(TAG, "数据格式错误：缺少笔记ID: " + values.toString());
} }
insertedId = dataId = db.insert(TABLE.DATA, null, values); insertedId = dataId = db.insert(TABLE.DATA, null, values);
break; break;
default: default:
throw new IllegalArgumentException("Unknown URI " + uri); throw new IllegalArgumentException("未知URI: " + uri);
} }
// Notify the note uri
// 通知笔记数据变化（若插入成功）
if (noteId > 0) { if (noteId > 0) {
getContext().getContentResolver().notifyChange( getContext().getContentResolver().notifyChange(
ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, noteId), null); ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, noteId), null);
} }
// Notify the data uri // 通知数据变化（若插入成功）
if (dataId > 0) { if (dataId > 0) {
getContext().getContentResolver().notifyChange( getContext().getContentResolver().notifyChange(
ContentUris.withAppendedId(Notes.CONTENT_DATA_URI, dataId), null); ContentUris.withAppendedId(Notes.CONTENT_DATA_URI, dataId), null);
@ -181,45 +226,60 @@ public class NotesProvider extends ContentProvider {
return ContentUris.withAppendedId(uri, insertedId); return ContentUris.withAppendedId(uri, insertedId);
} }
/**
* 处理删除请求
* @param uri 请求的URI
* @param selection 删除条件
* @param selectionArgs 条件参数
* @return 删除的记录数
*/
@Override @Override
public int delete(Uri uri, String selection, String[] selectionArgs) { public int delete(Uri uri, String selection, String[] selectionArgs) {
int count = 0; int count = 0;
String id = null; String id = null;
SQLiteDatabase db = mHelper.getWritableDatabase(); SQLiteDatabase db = mHelper.getWritableDatabase();
boolean deleteData = false; boolean deleteData = false;
// 根据URI匹配结果执行不同的删除逻辑
switch (mMatcher.match(uri)) { switch (mMatcher.match(uri)) {
case URI_NOTE: case URI_NOTE:
// 删除笔记集合（排除系统文件夹，ID>0为用户数据）
selection = "(" + selection + ") AND " + NoteColumns.ID + ">0 "; selection = "(" + selection + ") AND " + NoteColumns.ID + ">0 ";
count = db.delete(TABLE.NOTE, selection, selectionArgs); count = db.delete(TABLE.NOTE, selection, selectionArgs);
break; break;
case URI_NOTE_ITEM: case URI_NOTE_ITEM:
// 获取路径中的ID参数
id = uri.getPathSegments().get(1); id = uri.getPathSegments().get(1);
/**
* ID that smaller than 0 is system folder which is not allowed to
* trash
*/
long noteId = Long.valueOf(id); long noteId = Long.valueOf(id);
// 系统文件夹（ID≤0）不允许删除
if (noteId <= 0) { if (noteId <= 0) {
break; break;
} }
// 删除单条笔记（拼接条件：ID=指定值 + 可选条件）
count = db.delete(TABLE.NOTE, count = db.delete(TABLE.NOTE,
NoteColumns.ID + "=" + id + parseSelection(selection), selectionArgs); NoteColumns.ID + "=" + id + parseSelection(selection), selectionArgs);
break; break;
case URI_DATA: case URI_DATA:
// 删除数据集合
count = db.delete(TABLE.DATA, selection, selectionArgs); count = db.delete(TABLE.DATA, selection, selectionArgs);
deleteData = true; deleteData = true;
break; break;
case URI_DATA_ITEM: case URI_DATA_ITEM:
// 获取路径中的ID参数
id = uri.getPathSegments().get(1); id = uri.getPathSegments().get(1);
// 删除单条数据（拼接条件：ID=指定值 + 可选条件）
count = db.delete(TABLE.DATA, count = db.delete(TABLE.DATA,
DataColumns.ID + "=" + id + parseSelection(selection), selectionArgs); DataColumns.ID + "=" + id + parseSelection(selection), selectionArgs);
deleteData = true; deleteData = true;
break; break;
default: default:
throw new IllegalArgumentException("Unknown URI " + uri); throw new IllegalArgumentException("未知URI: " + uri);
} }
// 通知数据变化（若有删除操作）
if (count > 0) { if (count > 0) {
if (deleteData) { if (deleteData) {
// 数据变化可能影响笔记，通知笔记URI
getContext().getContentResolver().notifyChange(Notes.CONTENT_NOTE_URI, null); getContext().getContentResolver().notifyChange(Notes.CONTENT_NOTE_URI, null);
} }
getContext().getContentResolver().notifyChange(uri, null); getContext().getContentResolver().notifyChange(uri, null);
@ -227,39 +287,57 @@ public class NotesProvider extends ContentProvider {
return count; return count;
} }
/**
* 处理更新请求
* @param uri 请求的URI
* @param values 要更新的内容值
* @param selection 更新条件
* @param selectionArgs 条件参数
* @return 更新的记录数
*/
@Override @Override
public int update(Uri uri, ContentValues values, String selection, String[] selectionArgs) { public int update(Uri uri, ContentValues values, String selection, String[] selectionArgs) {
int count = 0; int count = 0;
String id = null; String id = null;
SQLiteDatabase db = mHelper.getWritableDatabase(); SQLiteDatabase db = mHelper.getWritableDatabase();
boolean updateData = false; boolean updateData = false;
// 根据URI匹配结果执行不同的更新逻辑
switch (mMatcher.match(uri)) { switch (mMatcher.match(uri)) {
case URI_NOTE: case URI_NOTE:
// 更新笔记集合前，增加版本号（适用于批量更新）
increaseNoteVersion(-1, selection, selectionArgs); increaseNoteVersion(-1, selection, selectionArgs);
count = db.update(TABLE.NOTE, values, selection, selectionArgs); count = db.update(TABLE.NOTE, values, selection, selectionArgs);
break; break;
case URI_NOTE_ITEM: case URI_NOTE_ITEM:
// 获取路径中的ID参数
id = uri.getPathSegments().get(1); id = uri.getPathSegments().get(1);
// 更新单条笔记前，增加版本号
increaseNoteVersion(Long.valueOf(id), selection, selectionArgs); increaseNoteVersion(Long.valueOf(id), selection, selectionArgs);
count = db.update(TABLE.NOTE, values, NoteColumns.ID + "=" + id count = db.update(TABLE.NOTE, values, NoteColumns.ID + "=" + id
+ parseSelection(selection), selectionArgs); + parseSelection(selection), selectionArgs);
break; break;
case URI_DATA: case URI_DATA:
// 更新数据集合
count = db.update(TABLE.DATA, values, selection, selectionArgs); count = db.update(TABLE.DATA, values, selection, selectionArgs);
updateData = true; updateData = true;
break; break;
case URI_DATA_ITEM: case URI_DATA_ITEM:
// 获取路径中的ID参数
id = uri.getPathSegments().get(1); id = uri.getPathSegments().get(1);
// 更新单条数据
count = db.update(TABLE.DATA, values, DataColumns.ID + "=" + id count = db.update(TABLE.DATA, values, DataColumns.ID + "=" + id
+ parseSelection(selection), selectionArgs); + parseSelection(selection), selectionArgs);
updateData = true; updateData = true;
break; break;
default: default:
throw new IllegalArgumentException("Unknown URI " + uri); throw new IllegalArgumentException("未知URI: " + uri);
} }
// 通知数据变化（若有更新操作）
if (count > 0) { if (count > 0) {
if (updateData) { if (updateData) {
// 数据变化可能影响笔记，通知笔记URI
getContext().getContentResolver().notifyChange(Notes.CONTENT_NOTE_URI, null); getContext().getContentResolver().notifyChange(Notes.CONTENT_NOTE_URI, null);
} }
getContext().getContentResolver().notifyChange(uri, null); getContext().getContentResolver().notifyChange(uri, null);
@ -267,18 +345,30 @@ public class NotesProvider extends ContentProvider {
return count; return count;
} }
/**
* 拼接查询条件：在原有条件前添加" AND ("，处理非空条件
* @param selection 原始条件
* @return 拼接后的条件字符串
*/
private String parseSelection(String selection) { private String parseSelection(String selection) {
return (!TextUtils.isEmpty(selection) ? " AND (" + selection + ')' : ""); return (!TextUtils.isEmpty(selection) ? " AND (" + selection + ')' : "");
} }
/**
* 增加笔记版本号：用于数据变更时标记版本更新
* @param id 笔记ID（-1表示批量更新）
* @param selection 更新条件（批量更新时使用）
* @param selectionArgs 条件参数
*/
private void increaseNoteVersion(long id, String selection, String[] selectionArgs) { private void increaseNoteVersion(long id, String selection, String[] selectionArgs) {
StringBuilder sql = new StringBuilder(120); StringBuilder sql = new StringBuilder(120);
sql.append("UPDATE "); sql.append("UPDATE ");
sql.append(TABLE.NOTE); sql.append(TABLE.NOTE);
sql.append(" SET "); sql.append(" SET ");
sql.append(NoteColumns.VERSION); sql.append(NoteColumns.VERSION);
sql.append("=" + NoteColumns.VERSION + "+1 "); sql.append("=" + NoteColumns.VERSION + "+1 "); // 版本号自增1
// 构造更新条件
if (id > 0 || !TextUtils.isEmpty(selection)) { if (id > 0 || !TextUtils.isEmpty(selection)) {
sql.append(" WHERE "); sql.append(" WHERE ");
} }
@ -287,19 +377,26 @@ public class NotesProvider extends ContentProvider {
} }
if (!TextUtils.isEmpty(selection)) { if (!TextUtils.isEmpty(selection)) {
String selectString = id > 0 ? parseSelection(selection) : selection; String selectString = id > 0 ? parseSelection(selection) : selection;
// 替换条件中的占位符?为实际参数
for (String args : selectionArgs) { for (String args : selectionArgs) {
selectString = selectString.replaceFirst("\\?", args); selectString = selectString.replaceFirst("\\?", args);
} }
sql.append(selectString); sql.append(selectString);
} }
// 执行SQL更新语句
mHelper.getWritableDatabase().execSQL(sql.toString()); mHelper.getWritableDatabase().execSQL(sql.toString());
} }
/**
* 获取URI对应的MIME类型（未实现）
* @param uri 请求的URI
* @return MIME类型字符串
*/
@Override @Override
public String getType(Uri uri) { public String getType(Uri uri) {
// TODO Auto-generated method stub // TODO Auto-generated method stub
return null; return null;
} }
} }
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