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package net.micode.notes.data;
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import android.content.Context;
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import android.database.Cursor;
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import android.provider.ContactsContract.CommonDataKinds.Phone;
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import android.provider.ContactsContract.Data;
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import android.telephony.PhoneNumberUtils;
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import android.util.Log;
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import java.util.HashMap;
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//change
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public class Contact { //联系人
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private static HashMap<String, String> sContactCache;
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private static final String TAG = "Contact";
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// 定义字符串CALLER_ID_SELECTION
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private static final String CALLER_ID_SELECTION = "PHONE_NUMBERS_EQUAL("
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+ Phone.NUMBER
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+ ",?) AND " + Data.MIMETYPE + "='" + Phone.CONTENT_ITEM_TYPE + "'"
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+ " AND " + Data.RAW_CONTACT_ID + " IN "
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+ "(SELECT raw_contact_id "
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+ " FROM phone_lookup"
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+ " WHERE min_match = '+')";
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// 获取联系人
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public static String getContact(Context context, String phoneNumber) {
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if(sContactCache == null) {
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sContactCache = new HashMap<String, String>();
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}
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// 查找HashMap中是否已有phoneNumber信息
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if(sContactCache.containsKey(phoneNumber)) {
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return sContactCache.get(phoneNumber);
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}
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String selection = CALLER_ID_SELECTION.replace("+",
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PhoneNumberUtils.toCallerIDMinMatch(phoneNumber));
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// 查找数据库中phoneNumber的信息
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Cursor cursor = context.getContentResolver().query(
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Data.CONTENT_URI,
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new String [] { Phone.DISPLAY_NAME },
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selection,
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new String[] { phoneNumber },
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null);
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// 判定查询结果
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// moveToFirst()返回第一条
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if (cursor != null && cursor.moveToFirst()) {
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try {
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// 找到相关信息
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String name = cursor.getString(0);
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sContactCache.put(phoneNumber, name);
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return name;
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// 异常
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} catch (IndexOutOfBoundsException e) {
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Log.e(TAG, " Cursor get string error " + e.toString());
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return null;
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} finally {
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cursor.close();
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}
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// 未找到相关信息
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} else {
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Log.d(TAG, "No contact matched with number:" + phoneNumber);
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return null;
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}
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}
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}
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package net.micode.notes.data;
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import android.content.ContentUris;
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import android.net.Uri;
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// Notes 类中定义了很多常量，这些常量大多是int型和string型
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public class Notes {
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public static final String AUTHORITY = "micode_notes";
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public static final String TAG = "Notes";
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//以下三个常量对NoteColumns.TYPE的值进行设置时会用到
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public static final int TYPE_NOTE = 0;
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public static final int TYPE_FOLDER = 1;
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public static final int TYPE_SYSTEM = 2;
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/**
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* Following IDs are system folders' identifiers
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* {@link Notes#ID_ROOT_FOLDER } is default folder
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* {@link Notes#ID_TEMPARAY_FOLDER } is for notes belonging no folder
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* {@link Notes#ID_CALL_RECORD_FOLDER} is to store call records
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*/
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public static final int ID_ROOT_FOLDER = 0;
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public static final int ID_TEMPARAY_FOLDER = -1;
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public static final int ID_CALL_RECORD_FOLDER = -2;
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public static final int ID_TRASH_FOLER = -3;
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public static final String INTENT_EXTRA_ALERT_DATE =
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"net.micode.notes.alert_date";
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public static final String INTENT_EXTRA_BACKGROUND_ID =
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"net.micode.notes.background_color_id";
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public static final String INTENT_EXTRA_WIDGET_ID =
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"net.micode.notes.widget_id";
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public static final String INTENT_EXTRA_WIDGET_TYPE =
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"net.micode.notes.widget_type";
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public static final String INTENT_EXTRA_FOLDER_ID =
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"net.micode.notes.folder_id";
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public static final String INTENT_EXTRA_CALL_DATE =
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"net.micode.notes.call_date";
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public static final int TYPE_WIDGET_INVALIDE = -1;
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public static final int TYPE_WIDGET_2X = 0;
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public static final int TYPE_WIDGET_4X = 1;
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public static class DataConstants {
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public static final String NOTE = TextNote.CONTENT_ITEM_TYPE;
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public static final String CALL_NOTE = CallNote.CONTENT_ITEM_TYPE;
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}
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/**
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* Uri to query all notes and folders
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*/
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public static final Uri CONTENT_NOTE_URI = Uri.parse("content://" +
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AUTHORITY + "/note");//定义查询便签和文件夹的指针。
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// public static final Uri my_URI = ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI , 10);
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/**
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* Uri to query data
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*/
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public static final Uri CONTENT_DATA_URI = Uri.parse("content://" +
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AUTHORITY + "/data");//定义查找数据的指针。
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// 定义NoteColumns的常量,用于后面创建数据库的表头
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public interface NoteColumns {
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/**
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* The unique ID for a row
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* <P> Type: INTEGER (long) </P>
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*/
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public static final String ID = "_id";
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/**
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* The parent's id for note or folder
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* <P> Type: INTEGER (long) </P>
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*/
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public static final String PARENT_ID = "parent_id";//为什么会有parent_id
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/**
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* Created data for note or folder
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* <P> Type: INTEGER (long) </P>
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*/
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public static final String CREATED_DATE = "created_date";
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/**
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* Latest modified date
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* <P> Type: INTEGER (long) </P>
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*/
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public static final String MODIFIED_DATE = "modified_date";
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/**
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* Alert date
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* <P> Type: INTEGER (long) </P>
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*/
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public static final String ALERTED_DATE = "alert_date";
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/**
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* Folder's name or text content of note
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* <P> Type: TEXT </P>
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*/
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public static final String SNIPPET = "snippet";
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/**
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* Note's widget id
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* <P> Type: INTEGER (long) </P>
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*/
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public static final String WIDGET_ID = "widget_id";
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/**
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* Note's widget type
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* <P> Type: INTEGER (long) </P>
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*/
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public static final String WIDGET_TYPE = "widget_type";
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/**
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* Note's background color's id
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* <P> Type: INTEGER (long) </P>
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*/
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public static final String BG_COLOR_ID = "bg_color_id";
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/**
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* For text note, it doesn't has attachment, for multi-media
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* note, it has at least one attachment
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* <P> Type: INTEGER </P>
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*/
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public static final String HAS_ATTACHMENT = "has_attachment";
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/**
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* Folder's count of notes
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* <P> Type: INTEGER (long) </P>
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*/
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public static final String NOTES_COUNT = "notes_count";
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/**
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* The file type: folder or note
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* <P> Type: INTEGER </P>
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*/
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public static final String TYPE = "type";
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/**
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* The last sync id
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* <P> Type: INTEGER (long) </P>
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*/
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public static final String SYNC_ID = "sync_id";//同步
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/**
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* Sign to indicate local modified or not
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* <P> Type: INTEGER </P>
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*/
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public static final String LOCAL_MODIFIED = "local_modified";
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/**
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* Original parent id before moving into temporary folder
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* <P> Type : INTEGER </P>
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*/
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public static final String ORIGIN_PARENT_ID = "origin_parent_id";
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/**
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* The gtask id
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* <P> Type : TEXT </P>
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*/
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public static final String GTASK_ID = "gtask_id";
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/**
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* The version code
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* <P> Type : INTEGER (long) </P>
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*/
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public static final String VERSION = "version";
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}//这些常量主要是定义便签的属性的。
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// 定义DataColumns的常量,用于后面创建数据库的表头
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public interface DataColumns {
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/**
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* The unique ID for a row
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* <P> Type: INTEGER (long) </P>
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*/
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public static final String ID = "_id";
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/**
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* The MIME type of the item represented by this row.
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* <P> Type: Text </P>
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*/
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public static final String MIME_TYPE = "mime_type";
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/**
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* The reference id to note that this data belongs to
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* <P> Type: INTEGER (long) </P>
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*/
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public static final String NOTE_ID = "note_id";
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/**
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* Created data for note or folder
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* <P> Type: INTEGER (long) </P>
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*/
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public static final String CREATED_DATE = "created_date";
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/**
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* Latest modified date
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* <P> Type: INTEGER (long) </P>
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*/
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public static final String MODIFIED_DATE = "modified_date";
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/**
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* Data's content
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* <P> Type: TEXT </P>
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*/
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public static final String CONTENT = "content";
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/**
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* Generic data column, the meaning is {@link #MIMETYPE} specific,
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used for
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* integer data type
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* <P> Type: INTEGER </P>
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*/
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public static final String DATA1 = "data1";
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/**
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* Generic data column, the meaning is {@link #MIMETYPE} specific,
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used for
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* integer data type
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* <P> Type: INTEGER </P>
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*/
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public static final String DATA2 = "data2";
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/**
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* Generic data column, the meaning is {@link #MIMETYPE} specific,
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used for
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* TEXT data type
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* <P> Type: TEXT </P>
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*/
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public static final String DATA3 = "data3";
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/**
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* Generic data column, the meaning is {@link #MIMETYPE} specific,
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used for
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* TEXT data type
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* <P> Type: TEXT </P>
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*/
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public static final String DATA4 = "data4";
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/**
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* Generic data column, the meaning is {@link #MIMETYPE} specific,
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used for
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* TEXT data type
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* <P> Type: TEXT </P>
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*/
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public static final String DATA5 = "data5";
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}//主要是定义存储便签内容数据的
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public static final class TextNote implements DataColumns {
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/**
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* Mode to indicate the text in check list mode or not
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* <P> Type: Integer 1:check list mode 0: normal mode </P>
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*/
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public static final String MODE = DATA1;
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public static final int MODE_CHECK_LIST = 1;
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public static final String CONTENT_TYPE =
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"vnd.android.cursor.dir/text_note";
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public static final String CONTENT_ITEM_TYPE =
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"vnd.android.cursor.item/text_note";
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public static final Uri CONTENT_URI = Uri.parse("content://" +
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AUTHORITY + "/text_note");
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}//文本内容的数据结构
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public static final class CallNote implements DataColumns {
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/**
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* Call date for this record
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* <P> Type: INTEGER (long) </P>
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*/
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public static final String CALL_DATE = DATA1;
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/**
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* Phone number for this record
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* <P> Type: TEXT </P>
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*/
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public static final String PHONE_NUMBER = DATA3;
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public static final String CONTENT_TYPE =
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"vnd.android.cursor.dir/call_note";
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public static final String CONTENT_ITEM_TYPE =
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"vnd.android.cursor.item/call_note";
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public static final Uri CONTENT_URI = Uri.parse("content://" +
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AUTHORITY + "/call_note");
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}//电话内容的数据结构
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}
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package net.micode.notes.data;
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import android.content.ContentValues;//就是用于保存一些数据（string boolean byte double float int long short ...）信息，这些信息可以被数据库操作时使用。
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import android.content.Context;//加载和访问资源。（android中主要是这两个功能，但是这里具体不清楚）
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import android.database.sqlite.SQLiteDatabase;//主要提供了对应于添加、删除、更新、查询的操作方法： insert()、delete()、update()和query()。配合content.values
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import android.database.sqlite.SQLiteOpenHelper;//用来管理数据的创建和版本更新
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import android.util.Log;
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import net.micode.notes.data.Notes.DataColumns;
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import net.micode.notes.data.Notes.DataConstants;
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import net.micode.notes.data.Notes.NoteColumns;
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//数据库操作，用SQLOpenhelper,对一些note和文件进行数据库的操作，比如删除文件后，将文件里的note也相应删除
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public class NotesDatabaseHelper extends SQLiteOpenHelper {
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private static final String DB_NAME = "note.db";
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private static final int DB_VERSION = 4;
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public interface TABLE { //接口，分成note和data，在后面的程序里分别使用过
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public static final String NOTE = "note";
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public static final String DATA = "data";
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}
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private static final String TAG = "NotesDatabaseHelper";
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private static NotesDatabaseHelper mInstance;
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private static final String CREATE_NOTE_TABLE_SQL =
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"CREATE TABLE " + TABLE.NOTE + "(" +
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NoteColumns.ID + " INTEGER PRIMARY KEY," +
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NoteColumns.PARENT_ID + " INTEGER NOT NULL DEFAULT 0," +
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NoteColumns.ALERTED_DATE + " INTEGER NOT NULL DEFAULT 0," +
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NoteColumns.BG_COLOR_ID + " INTEGER NOT NULL DEFAULT 0," +
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NoteColumns.CREATED_DATE + " INTEGER NOT NULL DEFAULT (strftime('%s','now') * 1000)," +
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NoteColumns.HAS_ATTACHMENT + " INTEGER NOT NULL DEFAULT 0," +
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NoteColumns.MODIFIED_DATE + " INTEGER NOT NULL DEFAULT (strftime('%s','now') * 1000)," +
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NoteColumns.NOTES_COUNT + " INTEGER NOT NULL DEFAULT 0," +
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NoteColumns.SNIPPET + " TEXT NOT NULL DEFAULT ''," +
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NoteColumns.TYPE + " INTEGER NOT NULL DEFAULT 0," +
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NoteColumns.WIDGET_ID + " INTEGER NOT NULL DEFAULT 0," +
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NoteColumns.WIDGET_TYPE + " INTEGER NOT NULL DEFAULT -1," +
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NoteColumns.SYNC_ID + " INTEGER NOT NULL DEFAULT 0," +
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NoteColumns.LOCAL_MODIFIED + " INTEGER NOT NULL DEFAULT 0," +
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NoteColumns.ORIGIN_PARENT_ID + " INTEGER NOT NULL DEFAULT 0," +
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NoteColumns.GTASK_ID + " TEXT NOT NULL DEFAULT ''," +
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NoteColumns.VERSION + " INTEGER NOT NULL DEFAULT 0" +
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")";//数据库中需要存储的项目的名称，就相当于创建一个表格的表头的内容。
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private static final String CREATE_DATA_TABLE_SQL =
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"CREATE TABLE " + TABLE.DATA + "(" +
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DataColumns.ID + " INTEGER PRIMARY KEY," +
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DataColumns.MIME_TYPE + " TEXT NOT NULL," +
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DataColumns.NOTE_ID + " INTEGER NOT NULL DEFAULT 0," +
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NoteColumns.CREATED_DATE + " INTEGER NOT NULL DEFAULT (strftime('%s','now') * 1000)," +
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NoteColumns.MODIFIED_DATE + " INTEGER NOT NULL DEFAULT (strftime('%s','now') * 1000)," +
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DataColumns.CONTENT + " TEXT NOT NULL DEFAULT ''," +
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DataColumns.DATA1 + " INTEGER," +
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DataColumns.DATA2 + " INTEGER," +
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DataColumns.DATA3 + " TEXT NOT NULL DEFAULT ''," +
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|
DataColumns.DATA4 + " TEXT NOT NULL DEFAULT ''," +
|
|
|
DataColumns.DATA5 + " TEXT NOT NULL DEFAULT ''" +
|
|
|
")";//和上面的功能一样，主要是存储的项目不同
|
|
|
|
|
|
private static final String CREATE_DATA_NOTE_ID_INDEX_SQL =
|
|
|
"CREATE INDEX IF NOT EXISTS note_id_index ON " +
|
|
|
TABLE.DATA + "(" + DataColumns.NOTE_ID + ");";//存储便签编号的一个数据表格
|
|
|
|
|
|
/**
|
|
|
* Increase folder's note count when move note to the folder
|
|
|
*/
|
|
|
private static final String NOTE_INCREASE_FOLDER_COUNT_ON_UPDATE_TRIGGER =
|
|
|
"CREATE TRIGGER increase_folder_count_on_update "+
|
|
|
" AFTER UPDATE OF " + NoteColumns.PARENT_ID + " ON " + TABLE.NOTE +
|
|
|
" BEGIN " +
|
|
|
" UPDATE " + TABLE.NOTE +
|
|
|
" SET " + NoteColumns.NOTES_COUNT + "=" + NoteColumns.NOTES_COUNT + " + 1" +
|
|
|
" WHERE " + NoteColumns.ID + "=new." + NoteColumns.PARENT_ID + ";" +
|
|
|
" END";//在文件夹中移入一个Note之后需要更改的数据的表格。
|
|
|
|
|
|
/**
|
|
|
* Decrease folder's note count when move note from folder
|
|
|
*/
|
|
|
private static final String NOTE_DECREASE_FOLDER_COUNT_ON_UPDATE_TRIGGER =
|
|
|
"CREATE TRIGGER decrease_folder_count_on_update " +
|
|
|
" AFTER UPDATE OF " + NoteColumns.PARENT_ID + " ON " + TABLE.NOTE +
|
|
|
" BEGIN " +
|
|
|
" UPDATE " + TABLE.NOTE +
|
|
|
" SET " + NoteColumns.NOTES_COUNT + "=" + NoteColumns.NOTES_COUNT + "-1" +
|
|
|
" WHERE " + NoteColumns.ID + "=old." + NoteColumns.PARENT_ID +
|
|
|
" AND " + NoteColumns.NOTES_COUNT + ">0" + ";" +
|
|
|
" END";//在文件夹中移出一个Note之后需要更改的数据的表格。
|
|
|
|
|
|
/**
|
|
|
* Increase folder's note count when insert new note to the folder
|
|
|
*/
|
|
|
private static final String NOTE_INCREASE_FOLDER_COUNT_ON_INSERT_TRIGGER =
|
|
|
"CREATE TRIGGER increase_folder_count_on_insert " +
|
|
|
" AFTER INSERT ON " + TABLE.NOTE +
|
|
|
" BEGIN " +
|
|
|
" UPDATE " + TABLE.NOTE +
|
|
|
" SET " + NoteColumns.NOTES_COUNT + "=" + NoteColumns.NOTES_COUNT + " + 1" +
|
|
|
" WHERE " + NoteColumns.ID + "=new." + NoteColumns.PARENT_ID + ";" +
|
|
|
" END";//在文件夹中插入一个Note之后需要更改的数据的表格。
|
|
|
|
|
|
/**
|
|
|
* Decrease folder's note count when delete note from the folder
|
|
|
*/
|
|
|
private static final String NOTE_DECREASE_FOLDER_COUNT_ON_DELETE_TRIGGER =
|
|
|
"CREATE TRIGGER decrease_folder_count_on_delete " +
|
|
|
" AFTER DELETE ON " + TABLE.NOTE +
|
|
|
" BEGIN " +
|
|
|
" UPDATE " + TABLE.NOTE +
|
|
|
" SET " + NoteColumns.NOTES_COUNT + "=" + NoteColumns.NOTES_COUNT + "-1" +
|
|
|
" WHERE " + NoteColumns.ID + "=old." + NoteColumns.PARENT_ID +
|
|
|
" AND " + NoteColumns.NOTES_COUNT + ">0;" +
|
|
|
" END";//在文件夹中删除一个Note之后需要更改的数据的表格。
|
|
|
|
|
|
/**
|
|
|
* Update note's content when insert data with type {@link DataConstants#NOTE}
|
|
|
*/
|
|
|
private static final String DATA_UPDATE_NOTE_CONTENT_ON_INSERT_TRIGGER =
|
|
|
"CREATE TRIGGER update_note_content_on_insert " +
|
|
|
" AFTER INSERT ON " + TABLE.DATA +
|
|
|
" WHEN new." + DataColumns.MIME_TYPE + "='" + DataConstants.NOTE + "'" +
|
|
|
" BEGIN" +
|
|
|
" UPDATE " + TABLE.NOTE +
|
|
|
" SET " + NoteColumns.SNIPPET + "=new." + DataColumns.CONTENT +
|
|
|
" WHERE " + NoteColumns.ID + "=new." + DataColumns.NOTE_ID + ";" +
|
|
|
" END";//在文件夹中对一个Note导入新的数据之后需要更改的数据的表格。
|
|
|
|
|
|
/**
|
|
|
* Update note's content when data with {@link DataConstants#NOTE} type has changed
|
|
|
*/
|
|
|
private static final String DATA_UPDATE_NOTE_CONTENT_ON_UPDATE_TRIGGER =
|
|
|
"CREATE TRIGGER update_note_content_on_update " +
|
|
|
" AFTER UPDATE ON " + TABLE.DATA +
|
|
|
" WHEN old." + DataColumns.MIME_TYPE + "='" + DataConstants.NOTE + "'" +
|
|
|
" BEGIN" +
|
|
|
" UPDATE " + TABLE.NOTE +
|
|
|
" SET " + NoteColumns.SNIPPET + "=new." + DataColumns.CONTENT +
|
|
|
" WHERE " + NoteColumns.ID + "=new." + DataColumns.NOTE_ID + ";" +
|
|
|
" END";//Note数据被修改后需要更改的数据的表格。
|
|
|
|
|
|
/**
|
|
|
* Update note's content when data with {@link DataConstants#NOTE} type has deleted
|
|
|
*/
|
|
|
private static final String DATA_UPDATE_NOTE_CONTENT_ON_DELETE_TRIGGER =
|
|
|
"CREATE TRIGGER update_note_content_on_delete " +
|
|
|
" AFTER delete ON " + TABLE.DATA +
|
|
|
" WHEN old." + DataColumns.MIME_TYPE + "='" + DataConstants.NOTE + "'" +
|
|
|
" BEGIN" +
|
|
|
" UPDATE " + TABLE.NOTE +
|
|
|
" SET " + NoteColumns.SNIPPET + "=''" +
|
|
|
" WHERE " + NoteColumns.ID + "=old." + DataColumns.NOTE_ID + ";" +
|
|
|
" END";//Note数据被删除后需要更改的数据的表格。
|
|
|
|
|
|
/**
|
|
|
* Delete datas belong to note which has been deleted
|
|
|
*/
|
|
|
private static final String NOTE_DELETE_DATA_ON_DELETE_TRIGGER =
|
|
|
"CREATE TRIGGER delete_data_on_delete " +
|
|
|
" AFTER DELETE ON " + TABLE.NOTE +
|
|
|
" BEGIN" +
|
|
|
" DELETE FROM " + TABLE.DATA +
|
|
|
" WHERE " + DataColumns.NOTE_ID + "=old." + NoteColumns.ID + ";" +
|
|
|
" END";//删除已删除的便签的数据后需要更改的数据的表格。
|
|
|
|
|
|
/**
|
|
|
* Delete notes belong to folder which has been deleted
|
|
|
*/
|
|
|
private static final String FOLDER_DELETE_NOTES_ON_DELETE_TRIGGER =
|
|
|
"CREATE TRIGGER folder_delete_notes_on_delete " +
|
|
|
" AFTER DELETE ON " + TABLE.NOTE +
|
|
|
" BEGIN" +
|
|
|
" DELETE FROM " + TABLE.NOTE +
|
|
|
" WHERE " + NoteColumns.PARENT_ID + "=old." + NoteColumns.ID + ";" +
|
|
|
" END";//删除已删除的文件夹的便签后需要更改的数据的表格。
|
|
|
|
|
|
/**
|
|
|
* Move notes belong to folder which has been moved to trash folder
|
|
|
*/
|
|
|
private static final String FOLDER_MOVE_NOTES_ON_TRASH_TRIGGER =
|
|
|
"CREATE TRIGGER folder_move_notes_on_trash " +
|
|
|
" AFTER UPDATE ON " + TABLE.NOTE +
|
|
|
" WHEN new." + NoteColumns.PARENT_ID + "=" + Notes.ID_TRASH_FOLER +
|
|
|
" BEGIN" +
|
|
|
" UPDATE " + TABLE.NOTE +
|
|
|
" SET " + NoteColumns.PARENT_ID + "=" + Notes.ID_TRASH_FOLER +
|
|
|
" WHERE " + NoteColumns.PARENT_ID + "=old." + NoteColumns.ID + ";" +
|
|
|
" END";//还原垃圾桶中便签后需要更改的数据的表格。
|
|
|
|
|
|
public NotesDatabaseHelper(Context context) {
|
|
|
super(context, DB_NAME, null, DB_VERSION);
|
|
|
}//构造函数，传入数据库的名称和版本
|
|
|
|
|
|
public void createNoteTable(SQLiteDatabase db) {
|
|
|
db.execSQL(CREATE_NOTE_TABLE_SQL);
|
|
|
reCreateNoteTableTriggers(db);
|
|
|
createSystemFolder(db);
|
|
|
Log.d(TAG, "note table has been created");
|
|
|
}//创建表格（用来存储标签属性）
|
|
|
|
|
|
private void reCreateNoteTableTriggers(SQLiteDatabase db) {
|
|
|
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_delete");
|
|
|
db.execSQL("DROP TRIGGER IF EXISTS delete_data_on_delete");
|
|
|
db.execSQL("DROP TRIGGER IF EXISTS increase_folder_count_on_insert");
|
|
|
db.execSQL("DROP TRIGGER IF EXISTS folder_delete_notes_on_delete");
|
|
|
db.execSQL("DROP TRIGGER IF EXISTS folder_move_notes_on_trash");
|
|
|
|
|
|
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_DELETE_TRIGGER);
|
|
|
db.execSQL(NOTE_DELETE_DATA_ON_DELETE_TRIGGER);
|
|
|
db.execSQL(NOTE_INCREASE_FOLDER_COUNT_ON_INSERT_TRIGGER);
|
|
|
db.execSQL(FOLDER_DELETE_NOTES_ON_DELETE_TRIGGER);
|
|
|
db.execSQL(FOLDER_MOVE_NOTES_ON_TRASH_TRIGGER);
|
|
|
}//execSQL是数据库操作的API，主要是更改行为的SQL语句。
|
|
|
//在这里主要是用来重新创建上述定义的表格用的，先删除原来有的数据库的触发器再重新创建新的数据库
|
|
|
|
|
|
private void createSystemFolder(SQLiteDatabase db) {
|
|
|
ContentValues values = new ContentValues();
|
|
|
|
|
|
/**
|
|
|
* call record foler for call notes
|
|
|
*/
|
|
|
values.put(NoteColumns.ID, Notes.ID_CALL_RECORD_FOLDER);
|
|
|
values.put(NoteColumns.TYPE, Notes.TYPE_SYSTEM);
|
|
|
db.insert(TABLE.NOTE, null, values);
|
|
|
|
|
|
/**
|
|
|
* root folder which is default folder
|
|
|
*/
|
|
|
values.clear();
|
|
|
values.put(NoteColumns.ID, Notes.ID_ROOT_FOLDER);
|
|
|
values.put(NoteColumns.TYPE, Notes.TYPE_SYSTEM);
|
|
|
db.insert(TABLE.NOTE, null, values);
|
|
|
|
|
|
/**
|
|
|
* temporary folder which is used for moving note
|
|
|
*/
|
|
|
values.clear();
|
|
|
values.put(NoteColumns.ID, Notes.ID_TEMPARAY_FOLDER);
|
|
|
values.put(NoteColumns.TYPE, Notes.TYPE_SYSTEM);
|
|
|
db.insert(TABLE.NOTE, null, values);
|
|
|
|
|
|
/**
|
|
|
* create trash folder
|
|
|
*/
|
|
|
values.clear();
|
|
|
values.put(NoteColumns.ID, Notes.ID_TRASH_FOLER);
|
|
|
values.put(NoteColumns.TYPE, Notes.TYPE_SYSTEM);
|
|
|
db.insert(TABLE.NOTE, null, values);
|
|
|
}//创建几个系统文件夹
|
|
|
|
|
|
public void createDataTable(SQLiteDatabase db) {
|
|
|
db.execSQL(CREATE_DATA_TABLE_SQL);
|
|
|
reCreateDataTableTriggers(db);
|
|
|
db.execSQL(CREATE_DATA_NOTE_ID_INDEX_SQL);
|
|
|
Log.d(TAG, "data table has been created");
|
|
|
}//创建表格（用来存储标签内容）
|
|
|
|
|
|
private void reCreateDataTableTriggers(SQLiteDatabase db) {
|
|
|
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_delete");
|
|
|
|
|
|
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_DELETE_TRIGGER);
|
|
|
}//同上面的execSQL
|
|
|
|
|
|
static synchronized NotesDatabaseHelper getInstance(Context context) {
|
|
|
if (mInstance == null) {
|
|
|
mInstance = new NotesDatabaseHelper(context);
|
|
|
}
|
|
|
return mInstance;
|
|
|
}//上网查是为解决同一时刻只能有一个线程执行.
|
|
|
//在写程序库代码时，有时有一个类需要被所有的其它类使用，
|
|
|
//但又要求这个类只能被实例化一次，是个服务类，定义一次，其它类使用同一个这个类的实例
|
|
|
|
|
|
@Override
|
|
|
public void onCreate(SQLiteDatabase db) {
|
|
|
createNoteTable(db);
|
|
|
createDataTable(db);
|
|
|
}//实现两个表格（上面创建的两个表格）
|
|
|
|
|
|
@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");
|
|
|
}
|
|
|
}//数据库版本的更新（数据库内容的更改）
|
|
|
|
|
|
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);
|
|
|
}//更新到V2版本
|
|
|
|
|
|
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);
|
|
|
}//更新到V3版本
|
|
|
|
|
|
private void upgradeToV4(SQLiteDatabase db) {
|
|
|
db.execSQL("ALTER TABLE " + TABLE.NOTE + " ADD COLUMN " + NoteColumns.VERSION
|
|
|
+ " INTEGER NOT NULL DEFAULT 0");
|
|
|
}//更新到V4版本,但是不知道V2、V3、V4是什么意思
|
|
|
}
|
|
|
package net.micode.notes.data;
|
|
|
|
|
|
import android.app.SearchManager;
|
|
|
import android.content.ContentProvider;
|
|
|
import android.content.ContentUris;
|
|
|
import android.content.ContentValues;
|
|
|
import android.content.Intent;
|
|
|
import android.content.UriMatcher;
|
|
|
import android.database.Cursor;
|
|
|
import android.database.sqlite.SQLiteDatabase;
|
|
|
import android.net.Uri;
|
|
|
import android.text.TextUtils;
|
|
|
import android.util.Log;
|
|
|
|
|
|
import net.micode.notes.R;
|
|
|
import net.micode.notes.data.Notes.DataColumns;
|
|
|
import net.micode.notes.data.Notes.NoteColumns;
|
|
|
import net.micode.notes.data.NotesDatabaseHelper.TABLE;
|
|
|
//为存储和获取数据提供接口。可以在不同的应用程序之间共享数据
|
|
|
//ContentProvider提供的方法
|
|
|
//query：查询
|
|
|
//insert：插入
|
|
|
//update：更新
|
|
|
//delete：删除
|
|
|
//getType：得到数据类型
|
|
|
public class NotesProvider extends ContentProvider {
|
|
|
// UriMatcher用于匹配Uri
|
|
|
private static final UriMatcher mMatcher;
|
|
|
|
|
|
private NotesDatabaseHelper mHelper;
|
|
|
|
|
|
private static final String TAG = "NotesProvider";
|
|
|
|
|
|
private static final int URI_NOTE = 1;
|
|
|
private static final int URI_NOTE_ITEM = 2;
|
|
|
private static final int URI_DATA = 3;
|
|
|
private static final int URI_DATA_ITEM = 4;
|
|
|
|
|
|
private static final int URI_SEARCH = 5;
|
|
|
private static final int URI_SEARCH_SUGGEST = 6;
|
|
|
|
|
|
static {
|
|
|
// 创建UriMatcher时，调用UriMatcher(UriMatcher.NO_MATCH)表示不匹配任何路径的返回码
|
|
|
mMatcher = new UriMatcher(UriMatcher.NO_MATCH);
|
|
|
// 把需要匹配Uri路径全部给注册上
|
|
|
mMatcher.addURI(Notes.AUTHORITY, "note", URI_NOTE);
|
|
|
mMatcher.addURI(Notes.AUTHORITY, "note/#", URI_NOTE_ITEM);
|
|
|
mMatcher.addURI(Notes.AUTHORITY, "data", URI_DATA);
|
|
|
mMatcher.addURI(Notes.AUTHORITY, "data/#", URI_DATA_ITEM);
|
|
|
mMatcher.addURI(Notes.AUTHORITY, "search", URI_SEARCH);
|
|
|
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,
|
|
|
* we will trim '\n' and white space in order to show more information.
|
|
|
*/
|
|
|
// 声明 NOTES_SEARCH_PROJECTION
|
|
|
private static final String NOTES_SEARCH_PROJECTION = NoteColumns.ID + ","
|
|
|
+ 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_2 + ","
|
|
|
+ R.drawable.search_result + " AS " + SearchManager.SUGGEST_COLUMN_ICON_1 + ","
|
|
|
+ "'" + Intent.ACTION_VIEW + "' AS " + SearchManager.SUGGEST_COLUMN_INTENT_ACTION + ","
|
|
|
+ "'" + Notes.TextNote.CONTENT_TYPE + "' AS " + SearchManager.SUGGEST_COLUMN_INTENT_DATA;
|
|
|
// 声明NOTES_SNIPPET_SEARCH_QUERY
|
|
|
private static String NOTES_SNIPPET_SEARCH_QUERY = "SELECT " + NOTES_SEARCH_PROJECTION
|
|
|
+ " FROM " + TABLE.NOTE
|
|
|
+ " WHERE " + NoteColumns.SNIPPET + " LIKE ?"
|
|
|
+ " AND " + NoteColumns.PARENT_ID + "<>" + Notes.ID_TRASH_FOLER
|
|
|
+ " AND " + NoteColumns.TYPE + "=" + Notes.TYPE_NOTE;
|
|
|
|
|
|
@Override
|
|
|
// Context只有在onCreate()中才被初始化
|
|
|
// 对mHelper进行实例化
|
|
|
public boolean onCreate() {
|
|
|
mHelper = NotesDatabaseHelper.getInstance(getContext());
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|
|
return true;
|
|
|
}
|
|
|
|
|
|
@Override
|
|
|
// 查询uri在数据库中对应的位置
|
|
|
public Cursor query(Uri uri, String[] projection, String selection, String[] selectionArgs,
|
|
|
String sortOrder) {
|
|
|
Cursor c = null;
|
|
|
// 获取可读数据库
|
|
|
SQLiteDatabase db = mHelper.getReadableDatabase();
|
|
|
String id = null;
|
|
|
// 匹配查找uri
|
|
|
switch (mMatcher.match(uri)) {
|
|
|
// 对于不同的匹配值，在数据库中查找相应的条目
|
|
|
case URI_NOTE:
|
|
|
c = db.query(TABLE.NOTE, projection, selection, selectionArgs, null, null,
|
|
|
sortOrder);
|
|
|
break;
|
|
|
case URI_NOTE_ITEM:
|
|
|
id = uri.getPathSegments().get(1);
|
|
|
c = db.query(TABLE.NOTE, projection, NoteColumns.ID + "=" + id
|
|
|
+ parseSelection(selection), selectionArgs, null, null, sortOrder);
|
|
|
break;
|
|
|
case URI_DATA:
|
|
|
c = db.query(TABLE.DATA, projection, selection, selectionArgs, null, null,
|
|
|
sortOrder);
|
|
|
break;
|
|
|
case URI_DATA_ITEM:
|
|
|
id = uri.getPathSegments().get(1);
|
|
|
c = db.query(TABLE.DATA, projection, DataColumns.ID + "=" + id
|
|
|
+ parseSelection(selection), selectionArgs, null, null, sortOrder);
|
|
|
break;
|
|
|
case URI_SEARCH:
|
|
|
case URI_SEARCH_SUGGEST:
|
|
|
if (sortOrder != null || projection != null) {
|
|
|
// 不合法的参数异常
|
|
|
throw new IllegalArgumentException(
|
|
|
"do not specify sortOrder, selection, selectionArgs, or projection" + "with this query");
|
|
|
}
|
|
|
|
|
|
String searchString = null;
|
|
|
if (mMatcher.match(uri) == URI_SEARCH_SUGGEST) {
|
|
|
if (uri.getPathSegments().size() > 1) {
|
|
|
// getPathSegments()方法得到一个String的List，
|
|
|
// 在uri.getPathSegments().get(1)为第2个元素
|
|
|
searchString = uri.getPathSegments().get(1);
|
|
|
}
|
|
|
} else {
|
|
|
searchString = uri.getQueryParameter("pattern");
|
|
|
}
|
|
|
|
|
|
if (TextUtils.isEmpty(searchString)) {
|
|
|
return null;
|
|
|
}
|
|
|
|
|
|
try {
|
|
|
searchString = String.format("%%%s%%", searchString);
|
|
|
c = db.rawQuery(NOTES_SNIPPET_SEARCH_QUERY,
|
|
|
new String[] { searchString });
|
|
|
} catch (IllegalStateException ex) {
|
|
|
Log.e(TAG, "got exception: " + ex.toString());
|
|
|
}
|
|
|
break;
|
|
|
default:
|
|
|
// 抛出异常
|
|
|
throw new IllegalArgumentException("Unknown URI " + uri);
|
|
|
}
|
|
|
if (c != null) {
|
|
|
c.setNotificationUri(getContext().getContentResolver(), uri);
|
|
|
}
|
|
|
return c;
|
|
|
}
|
|
|
|
|
|
@Override
|
|
|
// 插入一个uri
|
|
|
public Uri insert(Uri uri, ContentValues values) {
|
|
|
// 获得可写的数据库
|
|
|
SQLiteDatabase db = mHelper.getWritableDatabase();
|
|
|
long dataId = 0, noteId = 0, insertedId = 0;
|
|
|
switch (mMatcher.match(uri)) {
|
|
|
// 新增一个条目
|
|
|
case URI_NOTE:
|
|
|
insertedId = noteId = db.insert(TABLE.NOTE, null, values);
|
|
|
break;
|
|
|
// 如果存在，查找NOTE_ID
|
|
|
case URI_DATA:
|
|
|
if (values.containsKey(DataColumns.NOTE_ID)) {
|
|
|
noteId = values.getAsLong(DataColumns.NOTE_ID);
|
|
|
} else {
|
|
|
Log.d(TAG, "Wrong data format without note id:" + values.toString());
|
|
|
}
|
|
|
insertedId = dataId = db.insert(TABLE.DATA, null, values);
|
|
|
break;
|
|
|
default:
|
|
|
throw new IllegalArgumentException("Unknown URI " + uri);
|
|
|
}
|
|
|
// Notify the note uri
|
|
|
// notifyChange获得一个ContextResolver对象并且更新里面的内容
|
|
|
if (noteId > 0) {
|
|
|
getContext().getContentResolver().notifyChange(
|
|
|
ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, noteId), null);
|
|
|
}
|
|
|
|
|
|
// Notify the data uri
|
|
|
if (dataId > 0) {
|
|
|
getContext().getContentResolver().notifyChange(
|
|
|
ContentUris.withAppendedId(Notes.CONTENT_DATA_URI, dataId), null);
|
|
|
}
|
|
|
|
|
|
// 返回插入的uri的路径
|
|
|
return ContentUris.withAppendedId(uri, insertedId);
|
|
|
}
|
|
|
|
|
|
@Override
|
|
|
// 删除一个uri
|
|
|
public int delete(Uri uri, String selection, String[] selectionArgs) {
|
|
|
//Uri代表要操作的数据，Android上可用的每种资源 -包括 图像、视频片段、音频资源等都可以用Uri来表示。
|
|
|
int count = 0;
|
|
|
String id = null;
|
|
|
// 获得可写的数据库
|
|
|
SQLiteDatabase db = mHelper.getWritableDatabase();
|
|
|
boolean deleteData = false;
|
|
|
switch (mMatcher.match(uri)) {
|
|
|
case URI_NOTE:
|
|
|
selection = "(" + selection + ") AND " + NoteColumns.ID + ">0 ";
|
|
|
count = db.delete(TABLE.NOTE, selection, selectionArgs);
|
|
|
break;
|
|
|
case URI_NOTE_ITEM:
|
|
|
id = uri.getPathSegments().get(1);
|
|
|
/**
|
|
|
* ID that smaller than 0 is system folder which is not allowed to
|
|
|
* trash
|
|
|
*/
|
|
|
long noteId = Long.valueOf(id);
|
|
|
if (noteId <= 0) {
|
|
|
break;
|
|
|
}
|
|
|
count = db.delete(TABLE.NOTE,
|
|
|
NoteColumns.ID + "=" + id + parseSelection(selection), selectionArgs);
|
|
|
break;
|
|
|
case URI_DATA:
|
|
|
count = db.delete(TABLE.DATA, selection, selectionArgs);
|
|
|
deleteData = true;
|
|
|
break;
|
|
|
case URI_DATA_ITEM:
|
|
|
id = uri.getPathSegments().get(1);
|
|
|
count = db.delete(TABLE.DATA,
|
|
|
DataColumns.ID + "=" + id + parseSelection(selection), selectionArgs);
|
|
|
deleteData = true;
|
|
|
break;
|
|
|
default:
|
|
|
throw new IllegalArgumentException("Unknown URI " + uri);
|
|
|
}
|
|
|
if (count > 0) {
|
|
|
if (deleteData) {
|
|
|
getContext().getContentResolver().notifyChange(Notes.CONTENT_NOTE_URI, null);
|
|
|
}
|
|
|
getContext().getContentResolver().notifyChange(uri, null);
|
|
|
}
|
|
|
return count;
|
|
|
}
|
|
|
|
|
|
@Override
|
|
|
// 更新一个uri
|
|
|
public int update(Uri uri, ContentValues values, String selection, String[] selectionArgs) {
|
|
|
int count = 0;
|
|
|
String id = null;
|
|
|
SQLiteDatabase db = mHelper.getWritableDatabase();
|
|
|
boolean updateData = false;
|
|
|
switch (mMatcher.match(uri)) {
|
|
|
case URI_NOTE:
|
|
|
increaseNoteVersion(-1, selection, selectionArgs);
|
|
|
count = db.update(TABLE.NOTE, values, selection, selectionArgs);
|
|
|
break;
|
|
|
case URI_NOTE_ITEM:
|
|
|
id = uri.getPathSegments().get(1);
|
|
|
increaseNoteVersion(Long.valueOf(id), selection, selectionArgs);
|
|
|
count = db.update(TABLE.NOTE, values, NoteColumns.ID + "=" + id
|
|
|
+ parseSelection(selection), selectionArgs);
|
|
|
break;
|
|
|
case URI_DATA:
|
|
|
count = db.update(TABLE.DATA, values, selection, selectionArgs);
|
|
|
updateData = true;
|
|
|
break;
|
|
|
case URI_DATA_ITEM:
|
|
|
id = uri.getPathSegments().get(1);
|
|
|
count = db.update(TABLE.DATA, values, DataColumns.ID + "=" + id
|
|
|
+ parseSelection(selection), selectionArgs);
|
|
|
updateData = true;
|
|
|
break;
|
|
|
default:
|
|
|
throw new IllegalArgumentException("Unknown URI " + uri);
|
|
|
}
|
|
|
|
|
|
if (count > 0) {
|
|
|
if (updateData) {
|
|
|
getContext().getContentResolver().notifyChange(Notes.CONTENT_NOTE_URI, null);
|
|
|
}
|
|
|
getContext().getContentResolver().notifyChange(uri, null);
|
|
|
}
|
|
|
return count;
|
|
|
}
|
|
|
|
|
|
// 将字符串解析成规定格式
|
|
|
private String parseSelection(String selection) {
|
|
|
return (!TextUtils.isEmpty(selection) ? " AND (" + selection + ')' : "");
|
|
|
}
|
|
|
|
|
|
//增加一个noteVersion
|
|
|
private void increaseNoteVersion(long id, String selection, String[] selectionArgs) {
|
|
|
StringBuilder sql = new StringBuilder(120);
|
|
|
sql.append("UPDATE ");
|
|
|
sql.append(TABLE.NOTE);
|
|
|
sql.append(" SET ");
|
|
|
sql.append(NoteColumns.VERSION);
|
|
|
sql.append("=" + NoteColumns.VERSION + "+1 ");
|
|
|
|
|
|
if (id > 0 || !TextUtils.isEmpty(selection)) {
|
|
|
sql.append(" WHERE ");
|
|
|
}
|
|
|
if (id > 0) {
|
|
|
sql.append(NoteColumns.ID + "=" + String.valueOf(id));
|
|
|
}
|
|
|
if (!TextUtils.isEmpty(selection)) {
|
|
|
String selectString = id > 0 ? parseSelection(selection) : selection;
|
|
|
for (String args : selectionArgs) {
|
|
|
selectString = selectString.replaceFirst("\\?", args);
|
|
|
}
|
|
|
sql.append(selectString);
|
|
|
}
|
|
|
|
|
|
// execSQL()方法可以执行insert、delete、update和CREATE TABLE之类有更改行为的SQL语句
|
|
|
mHelper.getWritableDatabase().execSQL(sql.toString());
|
|
|
}
|
|
|
|
|
|
@Override
|
|
|
public String getType(Uri uri) {
|
|
|
// TODO Auto-generated method stub
|
|
|
return null;
|
|
|
}
|
|
|
|
|
|
}
|
