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@ -13,6 +13,10 @@
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* See the License for the specific language governing permissions and
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* See the License for the specific language governing permissions and
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* limitations under the License.
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* limitations under the License.
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*/
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*/
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/*
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* Description:用于支持小米便签最底层的数据库相关操作,和sqldata的关系上是父集关系,即note是data的子父集。
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* 和SqlData相比,SqlNote算是真正意义上的数据了。
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*/
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package net.micode.notes.gtask.data;
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package net.micode.notes.gtask.data;
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@ -39,10 +43,11 @@ import java.util.ArrayList;
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public class SqlNote {
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public class SqlNote {
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//调用getSimpleName()函数,得到类的简写名称存入字符串TAG中
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private static final String TAG = SqlNote.class.getSimpleName();
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private static final String TAG = SqlNote.class.getSimpleName();
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private static final int INVALID_ID = -99999;
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private static final int INVALID_ID = -99999;
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// 集合了interface NoteColumns中所有SF常量(17个)
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public static final String[] PROJECTION_NOTE = new String[] {
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public static final String[] PROJECTION_NOTE = new String[] {
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NoteColumns.ID, NoteColumns.ALERTED_DATE, NoteColumns.BG_COLOR_ID,
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NoteColumns.ID, NoteColumns.ALERTED_DATE, NoteColumns.BG_COLOR_ID,
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NoteColumns.CREATED_DATE, NoteColumns.HAS_ATTACHMENT, NoteColumns.MODIFIED_DATE,
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NoteColumns.CREATED_DATE, NoteColumns.HAS_ATTACHMENT, NoteColumns.MODIFIED_DATE,
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@ -52,6 +57,7 @@ public class SqlNote {
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NoteColumns.VERSION
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NoteColumns.VERSION
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};
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};
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//以下设置17个列的编号
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public static final int ID_COLUMN = 0;
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public static final int ID_COLUMN = 0;
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public static final int ALERTED_DATE_COLUMN = 1;
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public static final int ALERTED_DATE_COLUMN = 1;
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@ -86,6 +92,7 @@ public class SqlNote {
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public static final int VERSION_COLUMN = 16;
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public static final int VERSION_COLUMN = 16;
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//一下定义了17个内部的变量,其中12个可以由content中获得,5个需要初始化为0或者new
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private Context mContext;
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private Context mContext;
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private ContentResolver mContentResolver;
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private ContentResolver mContentResolver;
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@ -122,6 +129,7 @@ public class SqlNote {
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private ArrayList<SqlData> mDataList;
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private ArrayList<SqlData> mDataList;
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//mIsCreate用于标示构造函数,并且进行构造函数,同时构造函数只有context,对所有变量进行初始化
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public SqlNote(Context context) {
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public SqlNote(Context context) {
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mContext = context;
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mContext = context;
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mContentResolver = context.getContentResolver();
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mContentResolver = context.getContentResolver();
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@ -143,6 +151,8 @@ public class SqlNote {
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mDataList = new ArrayList<SqlData>();
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mDataList = new ArrayList<SqlData>();
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}
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}
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//mIsCreate用于标示构造方式
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//构造函数有context和一个数据库的cursor,多数变量通过cursor指向的一条记录直接进行初始化
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public SqlNote(Context context, Cursor c) {
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public SqlNote(Context context, Cursor c) {
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mContext = context;
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mContext = context;
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mContentResolver = context.getContentResolver();
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mContentResolver = context.getContentResolver();
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@ -154,6 +164,7 @@ public class SqlNote {
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mDiffNoteValues = new ContentValues();
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mDiffNoteValues = new ContentValues();
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}
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}
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//mIsCreate用于标示构造方式
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public SqlNote(Context context, long id) {
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public SqlNote(Context context, long id) {
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mContext = context;
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mContext = context;
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mContentResolver = context.getContentResolver();
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mContentResolver = context.getContentResolver();
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@ -166,16 +177,20 @@ public class SqlNote {
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}
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}
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//通过id从光标处加载数据
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private void loadFromCursor(long id) {
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private void loadFromCursor(long id) {
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Cursor c = null;
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Cursor c = null;
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try {
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try {
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c = mContentResolver.query(Notes.CONTENT_NOTE_URI, PROJECTION_NOTE, "(_id=?)",
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c = mContentResolver.query(Notes.CONTENT_NOTE_URI, PROJECTION_NOTE, "(_id=?)",
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new String[] {
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new String[] {
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String.valueOf(id)
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String.valueOf(id)
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}, null);
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}, null);//通过id获得对应的ContentResolver中的cursor
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if (c != null) {
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if (c != null) {
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c.moveToNext();
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c.moveToNext();
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loadFromCursor(c);
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loadFromCursor(c);/*然后加载数据进行初始化,这样函数SqlNote(Context context, long id)
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*与SqlNote(Context context, long id)的实现方式基本相同
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*/
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} else {
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} else {
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Log.w(TAG, "loadFromCursor: cursor = null");
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Log.w(TAG, "loadFromCursor: cursor = null");
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}
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}
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@ -185,7 +200,9 @@ public class SqlNote {
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}
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}
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}
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}
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//通过游标从光标处加载数据
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private void loadFromCursor(Cursor c) {
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private void loadFromCursor(Cursor c) {
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//直接从一条记录中的获得以下变量的初始值
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mId = c.getLong(ID_COLUMN);
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mId = c.getLong(ID_COLUMN);
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mAlertDate = c.getLong(ALERTED_DATE_COLUMN);
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mAlertDate = c.getLong(ALERTED_DATE_COLUMN);
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mBgColorId = c.getInt(BG_COLOR_ID_COLUMN);
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mBgColorId = c.getInt(BG_COLOR_ID_COLUMN);
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@ -200,6 +217,7 @@ public class SqlNote {
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mVersion = c.getLong(VERSION_COLUMN);
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mVersion = c.getLong(VERSION_COLUMN);
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}
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}
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//通过content机制获取共享数据并加载到数据库当前游标处
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private void loadDataContent() {
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private void loadDataContent() {
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Cursor c = null;
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Cursor c = null;
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mDataList.clear();
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mDataList.clear();
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@ -226,6 +244,7 @@ public class SqlNote {
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}
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}
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}
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}
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//设置通过content机制用于共享的数据信息
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public boolean setContent(JSONObject js) {
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public boolean setContent(JSONObject js) {
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try {
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try {
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JSONObject note = js.getJSONObject(GTaskStringUtils.META_HEAD_NOTE);
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JSONObject note = js.getJSONObject(GTaskStringUtils.META_HEAD_NOTE);
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@ -359,6 +378,7 @@ public class SqlNote {
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return true;
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return true;
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}
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}
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//获取content机制提供的数据并加载到note中
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public JSONObject getContent() {
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public JSONObject getContent() {
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try {
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try {
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JSONObject js = new JSONObject();
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JSONObject js = new JSONObject();
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@ -370,6 +390,7 @@ public class SqlNote {
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JSONObject note = new JSONObject();
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JSONObject note = new JSONObject();
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if (mType == Notes.TYPE_NOTE) {
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if (mType == Notes.TYPE_NOTE) {
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//类型为note时
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note.put(NoteColumns.ID, mId);
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note.put(NoteColumns.ID, mId);
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note.put(NoteColumns.ALERTED_DATE, mAlertDate);
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note.put(NoteColumns.ALERTED_DATE, mAlertDate);
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note.put(NoteColumns.BG_COLOR_ID, mBgColorId);
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note.put(NoteColumns.BG_COLOR_ID, mBgColorId);
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@ -393,6 +414,7 @@ public class SqlNote {
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}
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}
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js.put(GTaskStringUtils.META_HEAD_DATA, dataArray);
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js.put(GTaskStringUtils.META_HEAD_DATA, dataArray);
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} else if (mType == Notes.TYPE_FOLDER || mType == Notes.TYPE_SYSTEM) {
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} else if (mType == Notes.TYPE_FOLDER || mType == Notes.TYPE_SYSTEM) {
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//类型为文件夹或者
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note.put(NoteColumns.ID, mId);
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note.put(NoteColumns.ID, mId);
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note.put(NoteColumns.TYPE, mType);
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note.put(NoteColumns.TYPE, mType);
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note.put(NoteColumns.SNIPPET, mSnippet);
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note.put(NoteColumns.SNIPPET, mSnippet);
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@ -407,39 +429,48 @@ public class SqlNote {
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return null;
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return null;
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}
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}
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//给当前id设置父id
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public void setParentId(long id) {
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public void setParentId(long id) {
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mParentId = id;
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mParentId = id;
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mDiffNoteValues.put(NoteColumns.PARENT_ID, id);
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mDiffNoteValues.put(NoteColumns.PARENT_ID, id);
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}
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}
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//给当前id设置Gtaskid
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public void setGtaskId(String gid) {
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public void setGtaskId(String gid) {
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mDiffNoteValues.put(NoteColumns.GTASK_ID, gid);
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mDiffNoteValues.put(NoteColumns.GTASK_ID, gid);
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}
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}
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//给当前id设置同步id
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public void setSyncId(long syncId) {
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public void setSyncId(long syncId) {
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mDiffNoteValues.put(NoteColumns.SYNC_ID, syncId);
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mDiffNoteValues.put(NoteColumns.SYNC_ID, syncId);
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}
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}
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//初始化本地修改,即撤销所有当前修改
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public void resetLocalModified() {
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public void resetLocalModified() {
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mDiffNoteValues.put(NoteColumns.LOCAL_MODIFIED, 0);
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mDiffNoteValues.put(NoteColumns.LOCAL_MODIFIED, 0);
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}
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}
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//获得当前id
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public long getId() {
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public long getId() {
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return mId;
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return mId;
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}
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}
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//获得当前id的父id
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public long getParentId() {
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public long getParentId() {
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return mParentId;
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return mParentId;
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}
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}
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//获取小片段即用于显示的部分便签内容
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public String getSnippet() {
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public String getSnippet() {
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return mSnippet;
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return mSnippet;
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}
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}
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//判断是否为便签类型
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public boolean isNoteType() {
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public boolean isNoteType() {
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return mType == Notes.TYPE_NOTE;
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return mType == Notes.TYPE_NOTE;
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}
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}
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//commit函数用于把当前造作所做的修改保存到数据库
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public void commit(boolean validateVersion) {
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public void commit(boolean validateVersion) {
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if (mIsCreate) {
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if (mIsCreate) {
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if (mId == INVALID_ID && mDiffNoteValues.containsKey(NoteColumns.ID)) {
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if (mId == INVALID_ID && mDiffNoteValues.containsKey(NoteColumns.ID)) {
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@ -458,6 +489,7 @@ public class SqlNote {
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}
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}
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if (mType == Notes.TYPE_NOTE) {
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if (mType == Notes.TYPE_NOTE) {
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//直接使用sqldata中的实现
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for (SqlData sqlData : mDataList) {
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for (SqlData sqlData : mDataList) {
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sqlData.commit(mId, false, -1);
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sqlData.commit(mId, false, -1);
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}
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}
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@ -471,6 +503,7 @@ public class SqlNote {
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mVersion ++;
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mVersion ++;
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int result = 0;
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int result = 0;
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if (!validateVersion) {
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if (!validateVersion) {
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//构造字符串
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result = mContentResolver.update(Notes.CONTENT_NOTE_URI, mDiffNoteValues, "("
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result = mContentResolver.update(Notes.CONTENT_NOTE_URI, mDiffNoteValues, "("
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+ NoteColumns.ID + "=?)", new String[] {
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+ NoteColumns.ID + "=?)", new String[] {
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String.valueOf(mId)
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String.valueOf(mId)
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