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package net.micode.notes.gtask.data;
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import android.appwidget.AppWidgetManager;
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import android.content.ContentResolver;
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import android.content.ContentValues;
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import android.content.Context;
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import android.database.Cursor;
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import android.net.Uri;
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import android.util.Log;
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import net.micode.notes.data.Notes;
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import net.micode.notes.data.Notes.DataColumns;
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import net.micode.notes.data.Notes.NoteColumns;
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import net.micode.notes.gtask.exception.ActionFailureException;
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import net.micode.notes.tool.GTaskStringUtils;
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import net.micode.notes.tool.ResourceParser;
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import org.json.JSONArray;
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import org.json.JSONException;
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import org.json.JSONObject;
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import java.util.ArrayList;
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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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public class SqlNote {
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/*
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* 功能描述:得到类的简写名称存入字符串TAG中
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* 实现过程:调用getSimpleName ()函数
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* Made By CuiCan
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*/
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private static final String TAG = SqlNote.class.getSimpleName();
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//将INVALID_ID 初始化为-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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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.NOTES_COUNT, NoteColumns.PARENT_ID, NoteColumns.SNIPPET, NoteColumns.TYPE,
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NoteColumns.WIDGET_ID, NoteColumns.WIDGET_TYPE, NoteColumns.SYNC_ID,
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NoteColumns.LOCAL_MODIFIED, NoteColumns.ORIGIN_PARENT_ID, NoteColumns.GTASK_ID,
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NoteColumns.VERSION
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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 ALERTED_DATE_COLUMN = 1;
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public static final int BG_COLOR_ID_COLUMN = 2;
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public static final int CREATED_DATE_COLUMN = 3;
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public static final int HAS_ATTACHMENT_COLUMN = 4;
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public static final int MODIFIED_DATE_COLUMN = 5;
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public static final int NOTES_COUNT_COLUMN = 6;
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public static final int PARENT_ID_COLUMN = 7;
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public static final int SNIPPET_COLUMN = 8;
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public static final int TYPE_COLUMN = 9;
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public static final int WIDGET_ID_COLUMN = 10;
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public static final int WIDGET_TYPE_COLUMN = 11;
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public static final int SYNC_ID_COLUMN = 12;
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public static final int LOCAL_MODIFIED_COLUMN = 13;
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public static final int ORIGIN_PARENT_ID_COLUMN = 14;
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public static final int GTASK_ID_COLUMN = 15;
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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 ContentResolver mContentResolver;
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private boolean mIsCreate;
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private long mId;
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private long mAlertDate;
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private int mBgColorId;
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private long mCreatedDate;
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private int mHasAttachment;
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private long mModifiedDate;
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private long mParentId;
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private String mSnippet;
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private int mType;
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private int mWidgetId;
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private int mWidgetType;
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private long mOriginParent;
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private long mVersion;
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private ContentValues mDiffNoteValues;
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private ArrayList<SqlData> mDataList;
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/*
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* 功能描述:构造函数
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* 参数注解: mIsCreate用于标示构造方式
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* 参数注解:
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* Made By CuiCan
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*/
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//构造函数只有context,对所有的变量进行初始化
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public SqlNote(Context context) {
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mContext = context;
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mContentResolver = context.getContentResolver();
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mIsCreate = true;
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mId = INVALID_ID;
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mAlertDate = 0;
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mBgColorId = ResourceParser.getDefaultBgId(context);
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mCreatedDate = System.currentTimeMillis();
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//调用系统函数获得创建时间
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mHasAttachment = 0;
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mModifiedDate = System.currentTimeMillis();
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//最后一次修改时间初始化为创建时间
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mParentId = 0;
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mSnippet = "";
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mType = Notes.TYPE_NOTE;
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mWidgetId = AppWidgetManager.INVALID_APPWIDGET_ID;
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mWidgetType = Notes.TYPE_WIDGET_INVALIDE;
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mOriginParent = 0;
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mVersion = 0;
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mDiffNoteValues = new ContentValues();
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mDataList = new ArrayList<SqlData>();
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}
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/*
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* 功能描述:构造函数
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* 参数注解: mIsCreate用于标示构造方式
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* 参数注解:
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* Made By CuiCan
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*/
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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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mContext = context;
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mContentResolver = context.getContentResolver();
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mIsCreate = false;
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loadFromCursor(c);
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mDataList = new ArrayList<SqlData>();
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//
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if (mType == Notes.TYPE_NOTE)
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loadDataContent();
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mDiffNoteValues = new ContentValues();
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}
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/*
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* 功能描述:构造函数
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* 参数注解: mIsCreate用于标示构造方式
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* 参数注解:
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* Made By CuiCan
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*/
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public SqlNote(Context context, long id) {
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mContext = context;
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mContentResolver = context.getContentResolver();
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mIsCreate = false;
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loadFromCursor(id);
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mDataList = new ArrayList<SqlData>();
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if (mType == Notes.TYPE_NOTE)
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loadDataContent();
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mDiffNoteValues = new ContentValues();
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}
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/*
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* 功能描述:通过id从光标处加载数据
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* Made By CuiCan
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*/
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private void loadFromCursor(long id) {
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Cursor c = null;
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try {
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c = mContentResolver.query(Notes.CONTENT_NOTE_URI, PROJECTION_NOTE, "(_id=?)",
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new String[] {
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String.valueOf(id)
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}, null);
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//通过id获得对应的ContentResolver中的cursor
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if (c != null) {
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c.moveToNext();
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loadFromCursor(c);
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//然后加载数据进行初始化,这样函数
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//SqlNote(Context context, long id)与SqlNote(Context context, long id)的实现方式基本相同
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} else {
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Log.w(TAG, "loadFromCursor: cursor = null");
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}
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} finally {
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if (c != null)
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c.close();
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}
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}
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/*
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* 功能描述:通过游标从光标处加载数据
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* Made By CuiCan
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*/
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private void loadFromCursor(Cursor c) {
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//直接从一条记录中获得以下变量的初始值
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mId = c.getLong(ID_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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mCreatedDate = c.getLong(CREATED_DATE_COLUMN);
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mHasAttachment = c.getInt(HAS_ATTACHMENT_COLUMN);
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mModifiedDate = c.getLong(MODIFIED_DATE_COLUMN);
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mParentId = c.getLong(PARENT_ID_COLUMN);
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mSnippet = c.getString(SNIPPET_COLUMN);
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mType = c.getInt(TYPE_COLUMN);
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mWidgetId = c.getInt(WIDGET_ID_COLUMN);
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mWidgetType = c.getInt(WIDGET_TYPE_COLUMN);
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mVersion = c.getLong(VERSION_COLUMN);
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}
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/*
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* 功能描述: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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* 参数注解:
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* Made By CuiCan
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*/
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private void loadDataContent() {
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Cursor c = null;
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mDataList.clear();
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try {
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c = mContentResolver.query(Notes.CONTENT_DATA_URI, SqlData.PROJECTION_DATA,
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"(note_id=?)", new String[] {
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String.valueOf(mId)
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}, null);
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if (c != null) {
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if (c.getCount() == 0) {
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Log.w(TAG, "it seems that the note has not data");
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return;
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}
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while (c.moveToNext()) {
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SqlData data = new SqlData(mContext, c);
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mDataList.add(data);
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}
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} else {
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Log.w(TAG, "loadDataContent: cursor = null");
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}
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} finally {
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if (c != null)
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c.close();
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}
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}
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/*
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* 功能描述:设置通过content机制用于共享的数据信息
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* 参数注解:
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* Made By CuiCan
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*/
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public boolean setContent(JSONObject js) {
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try {
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JSONObject note = js.getJSONObject(GTaskStringUtils.META_HEAD_NOTE);
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//创建一个JSONObject对象note
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//不能对系统文件夹进行设置操作
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if (note.getInt(NoteColumns.TYPE) == Notes.TYPE_SYSTEM) {
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Log.w(TAG, "cannot set system folder");
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} else if (note.getInt(NoteColumns.TYPE) == Notes.TYPE_FOLDER) {
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//文件夹只能更新摘要和类型
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// for folder we can only update the snnipet and type
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String snippet = note.has(NoteColumns.SNIPPET) ? note
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.getString(NoteColumns.SNIPPET) : "";
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if (mIsCreate || !mSnippet.equals(snippet)) {
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mDiffNoteValues.put(NoteColumns.SNIPPET, snippet);
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}
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mSnippet = snippet;
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int type = note.has(NoteColumns.TYPE) ? note.getInt(NoteColumns.TYPE)
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: Notes.TYPE_NOTE;
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if (mIsCreate || mType != type) {
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mDiffNoteValues.put(NoteColumns.TYPE, type);
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}
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mType = type;
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} else if (note.getInt(NoteColumns.TYPE) == Notes.TYPE_NOTE) {
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//如果是便签则直接进入,下面一句是获取提示日期
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JSONArray dataArray = js.getJSONArray(GTaskStringUtils.META_HEAD_DATA);
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//获取数据的ID
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long id = note.has(NoteColumns.ID) ? note.getLong(NoteColumns.ID) : INVALID_ID;
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//如果只是通过上下文对note进行数据库操作,或者该ID与原ID不相同
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if (mIsCreate || mId != id) {
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mDiffNoteValues.put(NoteColumns.ID, id);
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}
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mId = id;
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//获取数据的提醒日期
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long alertDate = note.has(NoteColumns.ALERTED_DATE) ? note
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.getLong(NoteColumns.ALERTED_DATE) : 0;
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if (mIsCreate || mAlertDate != alertDate) {
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mDiffNoteValues.put(NoteColumns.ALERTED_DATE, alertDate);
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}
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mAlertDate = alertDate;
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//获取背景颜色ID
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int bgColorId = note.has(NoteColumns.BG_COLOR_ID) ? note
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.getInt(NoteColumns.BG_COLOR_ID) : ResourceParser.getDefaultBgId(mContext);
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if (mIsCreate || mBgColorId != bgColorId) {
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mDiffNoteValues.put(NoteColumns.BG_COLOR_ID, bgColorId);
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}
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mBgColorId = bgColorId;
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//获取创建日期
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long createDate = note.has(NoteColumns.CREATED_DATE) ? note
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.getLong(NoteColumns.CREATED_DATE) : System.currentTimeMillis();
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if (mIsCreate || mCreatedDate != createDate) {
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mDiffNoteValues.put(NoteColumns.CREATED_DATE, createDate);
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}
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mCreatedDate = createDate;
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//取数据的有无附件的布尔值
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int hasAttachment = note.has(NoteColumns.HAS_ATTACHMENT) ? note
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.getInt(NoteColumns.HAS_ATTACHMENT) : 0;
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if (mIsCreate || mHasAttachment != hasAttachment) {
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mDiffNoteValues.put(NoteColumns.HAS_ATTACHMENT, hasAttachment);
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}
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mHasAttachment = hasAttachment;
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//对最近修改日期的操作
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long modifiedDate = note.has(NoteColumns.MODIFIED_DATE) ? note
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.getLong(NoteColumns.MODIFIED_DATE) : System.currentTimeMillis();
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if (mIsCreate || mModifiedDate != modifiedDate) {
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mDiffNoteValues.put(NoteColumns.MODIFIED_DATE, modifiedDate);
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}
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mModifiedDate = modifiedDate;
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//获取数据的父节点ID
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long parentId = note.has(NoteColumns.PARENT_ID) ? note
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.getLong(NoteColumns.PARENT_ID) : 0;
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if (mIsCreate || mParentId != parentId) {
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mDiffNoteValues.put(NoteColumns.PARENT_ID, parentId);
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}
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mParentId = parentId;
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//对摘要操作
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String snippet = note.has(NoteColumns.SNIPPET) ? note
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.getString(NoteColumns.SNIPPET) : "";
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if (mIsCreate || !mSnippet.equals(snippet)) {
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mDiffNoteValues.put(NoteColumns.SNIPPET, snippet);
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}
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mSnippet = snippet;
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//对类型操作
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int type = note.has(NoteColumns.TYPE) ? note.getInt(NoteColumns.TYPE)
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: Notes.TYPE_NOTE;
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if (mIsCreate || mType != type) {
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mDiffNoteValues.put(NoteColumns.TYPE, type);
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}
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mType = type;
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//获取小部件的ID
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int widgetId = note.has(NoteColumns.WIDGET_ID) ? note.getInt(NoteColumns.WIDGET_ID)
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: AppWidgetManager.INVALID_APPWIDGET_ID;
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if (mIsCreate || mWidgetId != widgetId) {
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mDiffNoteValues.put(NoteColumns.WIDGET_ID, widgetId);
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}
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mWidgetId = widgetId;
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//对小部件的类型操作
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int widgetType = note.has(NoteColumns.WIDGET_TYPE) ? note
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.getInt(NoteColumns.WIDGET_TYPE) : Notes.TYPE_WIDGET_INVALIDE;
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if (mIsCreate || mWidgetType != widgetType) {
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mDiffNoteValues.put(NoteColumns.WIDGET_TYPE, widgetType);
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}
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mWidgetType = widgetType;
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//获取数据的原始父文件夹ID
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long originParent = note.has(NoteColumns.ORIGIN_PARENT_ID) ? note
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.getLong(NoteColumns.ORIGIN_PARENT_ID) : 0;
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if (mIsCreate || mOriginParent != originParent) {
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mDiffNoteValues.put(NoteColumns.ORIGIN_PARENT_ID, originParent);
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}
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mOriginParent = originParent;
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//遍历 dataArray,查找 id 为 dataId 的数据
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for (int i = 0; i < dataArray.length(); i++) {
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JSONObject data = dataArray.getJSONObject(i);
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SqlData sqlData = null;
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if (data.has(DataColumns.ID)) {
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long dataId = data.getLong(DataColumns.ID);
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for (SqlData temp : mDataList) {
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if (dataId == temp.getId()) {
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sqlData = temp;
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}
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}
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}
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if (sqlData == null) {
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sqlData = new SqlData(mContext);
|
|
|
mDataList.add(sqlData);
|
|
|
}
|
|
|
|
|
|
sqlData.setContent(data);
|
|
|
}
|
|
|
}
|
|
|
} catch (JSONException e) {
|
|
|
Log.e(TAG, e.toString());
|
|
|
e.printStackTrace();
|
|
|
return false;
|
|
|
}
|
|
|
return true;
|
|
|
}
|
|
|
|
|
|
/*
|
|
|
* 功能描述:获取content机制提供的数据并加载到note中
|
|
|
* 参数注解:
|
|
|
* Made By CuiCan
|
|
|
*/
|
|
|
public JSONObject getContent() {
|
|
|
try {
|
|
|
JSONObject js = new JSONObject();
|
|
|
|
|
|
if (mIsCreate) {
|
|
|
Log.e(TAG, "it seems that we haven't created this in database yet");
|
|
|
return null;
|
|
|
}
|
|
|
|
|
|
JSONObject note = new JSONObject();
|
|
|
if (mType == Notes.TYPE_NOTE) {
|
|
|
//类型为note时,将13个键值对的值写入note中,然后再设置为js键值对中的一个值
|
|
|
note.put(NoteColumns.ID, mId);
|
|
|
note.put(NoteColumns.ALERTED_DATE, mAlertDate);
|
|
|
note.put(NoteColumns.BG_COLOR_ID, mBgColorId);
|
|
|
note.put(NoteColumns.CREATED_DATE, mCreatedDate);
|
|
|
note.put(NoteColumns.HAS_ATTACHMENT, mHasAttachment);
|
|
|
note.put(NoteColumns.MODIFIED_DATE, mModifiedDate);
|
|
|
note.put(NoteColumns.PARENT_ID, mParentId);
|
|
|
note.put(NoteColumns.SNIPPET, mSnippet);
|
|
|
note.put(NoteColumns.TYPE, mType);
|
|
|
note.put(NoteColumns.WIDGET_ID, mWidgetId);
|
|
|
note.put(NoteColumns.WIDGET_TYPE, mWidgetType);
|
|
|
note.put(NoteColumns.ORIGIN_PARENT_ID, mOriginParent);
|
|
|
js.put(GTaskStringUtils.META_HEAD_NOTE, note);
|
|
|
|
|
|
JSONArray dataArray = new JSONArray();
|
|
|
//将note中的所有数据存进dataarray中
|
|
|
for (SqlData sqlData : mDataList) {
|
|
|
JSONObject data = sqlData.getContent();
|
|
|
if (data != null) {
|
|
|
dataArray.put(data);
|
|
|
}
|
|
|
}
|
|
|
//将dataArray存进js中
|
|
|
js.put(GTaskStringUtils.META_HEAD_DATA, dataArray);
|
|
|
} else if (mType == Notes.TYPE_FOLDER || mType == Notes.TYPE_SYSTEM) {
|
|
|
//类型为文件夹或者系统文件类型
|
|
|
note.put(NoteColumns.ID, mId);
|
|
|
note.put(NoteColumns.TYPE, mType);
|
|
|
note.put(NoteColumns.SNIPPET, mSnippet);
|
|
|
js.put(GTaskStringUtils.META_HEAD_NOTE, note);
|
|
|
}
|
|
|
|
|
|
return js;
|
|
|
} catch (JSONException e) {
|
|
|
Log.e(TAG, e.toString());
|
|
|
e.printStackTrace();
|
|
|
}
|
|
|
return null;
|
|
|
}
|
|
|
|
|
|
/*
|
|
|
* 功能描述:给当前id设置父id
|
|
|
* 参数注解:
|
|
|
* Made By CuiCan
|
|
|
*/
|
|
|
public void setParentId(long id) {
|
|
|
mParentId = id;
|
|
|
mDiffNoteValues.put(NoteColumns.PARENT_ID, id);
|
|
|
}
|
|
|
|
|
|
/*
|
|
|
* 功能描述:用当前id设置Gtaskid
|
|
|
* 参数注解:
|
|
|
* Made By CuiCan
|
|
|
*/
|
|
|
public void setGtaskId(String gid) {
|
|
|
mDiffNoteValues.put(NoteColumns.GTASK_ID, gid);
|
|
|
}
|
|
|
|
|
|
/*
|
|
|
* 功能描述:给当前id设置同步id
|
|
|
* 参数注解:
|
|
|
* Made By CuiCan
|
|
|
*/
|
|
|
public void setSyncId(long syncId) {
|
|
|
mDiffNoteValues.put(NoteColumns.SYNC_ID, syncId);
|
|
|
}
|
|
|
|
|
|
/*
|
|
|
* 功能描述:初始化本地修改,即撤销所有当前修改
|
|
|
* 参数注解:
|
|
|
* Made By CuiCan
|
|
|
*/
|
|
|
public void resetLocalModified() {
|
|
|
mDiffNoteValues.put(NoteColumns.LOCAL_MODIFIED, 0);
|
|
|
}
|
|
|
|
|
|
/*
|
|
|
* 功能描述:获得当前id
|
|
|
* 参数注解:
|
|
|
* Made By CuiCan
|
|
|
*/
|
|
|
public long getId() {
|
|
|
return mId;
|
|
|
}
|
|
|
|
|
|
/*
|
|
|
* 功能描述:获得当前id的父id
|
|
|
* 参数注解:
|
|
|
* Made By CuiCan
|
|
|
*/
|
|
|
public long getParentId() {
|
|
|
return mParentId;
|
|
|
}
|
|
|
|
|
|
/*
|
|
|
* 功能描述:获取小片段即用于显示的部分便签内容
|
|
|
* 参数注解:
|
|
|
* Made By CuiCan
|
|
|
*/
|
|
|
public String getSnippet() {
|
|
|
return mSnippet;
|
|
|
}
|
|
|
|
|
|
/*
|
|
|
* 功能描述:判断是否为便签类型
|
|
|
* 参数注解:
|
|
|
* Made By CuiCan
|
|
|
*/
|
|
|
public boolean isNoteType() {
|
|
|
return mType == Notes.TYPE_NOTE;
|
|
|
}
|
|
|
|
|
|
/*
|
|
|
* 功能描述:commit函数用于把当前所做的修改保存到数据库
|
|
|
* 参数注解:
|
|
|
* Made By CuiCan
|
|
|
*/
|
|
|
public void commit(boolean validateVersion) {
|
|
|
if (mIsCreate) {
|
|
|
//如果是第一种构造方式,ID为无效ID且包含该ID,则删除
|
|
|
if (mId == INVALID_ID && mDiffNoteValues.containsKey(NoteColumns.ID)) {
|
|
|
mDiffNoteValues.remove(NoteColumns.ID);
|
|
|
}
|
|
|
|
|
|
//插入便签的uri
|
|
|
Uri uri = mContentResolver.insert(Notes.CONTENT_NOTE_URI, mDiffNoteValues);
|
|
|
try {
|
|
|
mId = Long.valueOf(uri.getPathSegments().get(1));
|
|
|
} catch (NumberFormatException e) {
|
|
|
Log.e(TAG, "Get note id error :" + e.toString());
|
|
|
throw new ActionFailureException("create note failed");
|
|
|
}
|
|
|
if (mId == 0) {
|
|
|
throw new IllegalStateException("Create thread id failed");
|
|
|
}
|
|
|
|
|
|
if (mType == Notes.TYPE_NOTE) {
|
|
|
//如果类型为便签类型
|
|
|
for (SqlData sqlData : mDataList) {
|
|
|
//直接使用sqldata中的实现方法来实现
|
|
|
sqlData.commit(mId, false, -1);
|
|
|
}
|
|
|
}
|
|
|
} else {
|
|
|
//如果该便签ID是无效ID,报错:没有这个便签
|
|
|
if (mId <= 0 && mId != Notes.ID_ROOT_FOLDER && mId != Notes.ID_CALL_RECORD_FOLDER) {
|
|
|
Log.e(TAG, "No such note");
|
|
|
throw new IllegalStateException("Try to update note with invalid id");
|
|
|
}
|
|
|
if (mDiffNoteValues.size() > 0) {
|
|
|
mVersion ++;
|
|
|
int result = 0;
|
|
|
if (!validateVersion) {
|
|
|
//构造字符串
|
|
|
result = mContentResolver.update(Notes.CONTENT_NOTE_URI, mDiffNoteValues, "("
|
|
|
+ NoteColumns.ID + "=?)", new String[] {
|
|
|
String.valueOf(mId)
|
|
|
});
|
|
|
} else {
|
|
|
result = mContentResolver.update(Notes.CONTENT_NOTE_URI, mDiffNoteValues, "("
|
|
|
+ NoteColumns.ID + "=?) AND (" + NoteColumns.VERSION + "<=?)",
|
|
|
new String[] {
|
|
|
String.valueOf(mId), String.valueOf(mVersion)
|
|
|
});
|
|
|
}
|
|
|
//如果内容解析器没有更新,那么报错:没有更新,或许用户在同步时进行更新
|
|
|
if (result == 0) {
|
|
|
Log.w(TAG, "there is no update. maybe user updates note when syncing");
|
|
|
}
|
|
|
}
|
|
|
|
|
|
if (mType == Notes.TYPE_NOTE) {
|
|
|
//如果类型为便签类型,那么就调用SqlData中的方法来写入修改记录
|
|
|
for (SqlData sqlData : mDataList) {
|
|
|
sqlData.commit(mId, validateVersion, mVersion);
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
|
|
|
//通过 cursor 从当前 id 处加载数据
|
|
|
loadFromCursor(mId);
|
|
|
if (mType == Notes.TYPE_NOTE)
|
|
|
loadDataContent();
|
|
|
//清空,回到初始化状态
|
|
|
mDiffNoteValues.clear();
|
|
|
//改变数据库构造模式
|
|
|
mIsCreate = false;
|
|
|
}
|
|
|
} |