|
|
|
|
@ -34,22 +34,36 @@ import net.micode.notes.data.Notes.DataColumns;
|
|
|
|
|
import net.micode.notes.data.Notes.NoteColumns;
|
|
|
|
|
import net.micode.notes.data.NotesDatabaseHelper.TABLE;
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* 笔记应用的内容提供者
|
|
|
|
|
* 负责处理对笔记数据的CRUD操作
|
|
|
|
|
* 实现搜索功能
|
|
|
|
|
*/
|
|
|
|
|
public class NotesProvider extends ContentProvider {
|
|
|
|
|
// URI匹配器，用于匹配请求的URI
|
|
|
|
|
private static final UriMatcher mMatcher;
|
|
|
|
|
|
|
|
|
|
// 数据库帮助类实例
|
|
|
|
|
private NotesDatabaseHelper mHelper;
|
|
|
|
|
|
|
|
|
|
// 日志标签
|
|
|
|
|
private static final String TAG = "NotesProvider";
|
|
|
|
|
|
|
|
|
|
// URI类型常量
|
|
|
|
|
// 笔记表
|
|
|
|
|
private static final int URI_NOTE = 1;
|
|
|
|
|
// 单个笔记项
|
|
|
|
|
private static final int URI_NOTE_ITEM = 2;
|
|
|
|
|
// 数据表
|
|
|
|
|
private static final int URI_DATA = 3;
|
|
|
|
|
// 单个数据项
|
|
|
|
|
private static final int URI_DATA_ITEM = 4;
|
|
|
|
|
|
|
|
|
|
// 搜索
|
|
|
|
|
private static final int URI_SEARCH = 5;
|
|
|
|
|
// 搜索建议
|
|
|
|
|
private static final int URI_SEARCH_SUGGEST = 6;
|
|
|
|
|
|
|
|
|
|
// 静态初始化块，设置URI匹配规则
|
|
|
|
|
static {
|
|
|
|
|
mMatcher = new UriMatcher(UriMatcher.NO_MATCH);
|
|
|
|
|
mMatcher.addURI(Notes.AUTHORITY, "note", URI_NOTE);
|
|
|
|
|
@ -62,8 +76,8 @@ public class NotesProvider extends ContentProvider {
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* 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.
|
|
|
|
|
* x'0A'在sqlite中表示'\n'字符。对于搜索结果中的标题和内容，
|
|
|
|
|
* 我们将修剪'\n'和空格，以便显示更多信息。
|
|
|
|
|
*/
|
|
|
|
|
private static final String NOTES_SEARCH_PROJECTION = NoteColumns.ID + ","
|
|
|
|
|
+ NoteColumns.ID + " AS " + SearchManager.SUGGEST_COLUMN_INTENT_EXTRA_DATA + ","
|
|
|
|
|
@ -73,18 +87,32 @@ public class NotesProvider extends ContentProvider {
|
|
|
|
|
+ "'" + Intent.ACTION_VIEW + "' AS " + SearchManager.SUGGEST_COLUMN_INTENT_ACTION + ","
|
|
|
|
|
+ "'" + Notes.TextNote.CONTENT_TYPE + "' AS " + SearchManager.SUGGEST_COLUMN_INTENT_DATA;
|
|
|
|
|
|
|
|
|
|
// 笔记内容搜索查询SQL
|
|
|
|
|
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;
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* 内容提供者创建时调用
|
|
|
|
|
* 初始化数据库帮助类
|
|
|
|
|
*/
|
|
|
|
|
@Override
|
|
|
|
|
public boolean onCreate() {
|
|
|
|
|
mHelper = NotesDatabaseHelper.getInstance(getContext());
|
|
|
|
|
return true;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* 处理查询请求
|
|
|
|
|
* @param uri 请求的URI
|
|
|
|
|
* @param projection 要返回的列
|
|
|
|
|
* @param selection 查询条件
|
|
|
|
|
* @param selectionArgs 查询条件参数
|
|
|
|
|
* @param sortOrder 排序方式
|
|
|
|
|
* @return 查询结果游标
|
|
|
|
|
*/
|
|
|
|
|
@Override
|
|
|
|
|
public Cursor query(Uri uri, String[] projection, String selection, String[] selectionArgs,
|
|
|
|
|
String sortOrder) {
|
|
|
|
|
@ -93,25 +121,30 @@ public class NotesProvider extends ContentProvider {
|
|
|
|
|
String id = null;
|
|
|
|
|
switch (mMatcher.match(uri)) {
|
|
|
|
|
case URI_NOTE:
|
|
|
|
|
// 查询笔记表
|
|
|
|
|
c = db.query(TABLE.NOTE, projection, selection, selectionArgs, null, null,
|
|
|
|
|
sortOrder);
|
|
|
|
|
break;
|
|
|
|
|
case URI_NOTE_ITEM:
|
|
|
|
|
// 查询单个笔记
|
|
|
|
|
id = uri.getPathSegments().get(1);
|
|
|
|
|
c = db.query(TABLE.NOTE, projection, NoteColumns.ID + "=" + id
|
|
|
|
|
+ parseSelection(selection), selectionArgs, null, null, sortOrder);
|
|
|
|
|
break;
|
|
|
|
|
case URI_DATA:
|
|
|
|
|
// 查询数据表
|
|
|
|
|
c = db.query(TABLE.DATA, projection, selection, selectionArgs, null, null,
|
|
|
|
|
sortOrder);
|
|
|
|
|
break;
|
|
|
|
|
case URI_DATA_ITEM:
|
|
|
|
|
// 查询单个数据项
|
|
|
|
|
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:
|
|
|
|
|
// 处理搜索和搜索建议
|
|
|
|
|
if (sortOrder != null || projection != null) {
|
|
|
|
|
throw new IllegalArgumentException(
|
|
|
|
|
"do not specify sortOrder, selection, selectionArgs, or projection" + "with this query");
|
|
|
|
|
@ -131,6 +164,7 @@ public class NotesProvider extends ContentProvider {
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
try {
|
|
|
|
|
// 构建模糊查询参数
|
|
|
|
|
searchString = String.format("%%%s%%", searchString);
|
|
|
|
|
c = db.rawQuery(NOTES_SNIPPET_SEARCH_QUERY,
|
|
|
|
|
new String[] { searchString });
|
|
|
|
|
@ -142,20 +176,29 @@ public class NotesProvider extends ContentProvider {
|
|
|
|
|
throw new IllegalArgumentException("Unknown URI " + uri);
|
|
|
|
|
}
|
|
|
|
|
if (c != null) {
|
|
|
|
|
// 设置通知URI，当数据变化时通知观察者
|
|
|
|
|
c.setNotificationUri(getContext().getContentResolver(), uri);
|
|
|
|
|
}
|
|
|
|
|
return c;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* 处理插入请求
|
|
|
|
|
* @param uri 请求的URI
|
|
|
|
|
* @param values 要插入的值
|
|
|
|
|
* @return 插入后的URI
|
|
|
|
|
*/
|
|
|
|
|
@Override
|
|
|
|
|
public Uri insert(Uri uri, ContentValues values) {
|
|
|
|
|
SQLiteDatabase db = mHelper.getWritableDatabase();
|
|
|
|
|
long dataId = 0, noteId = 0, insertedId = 0;
|
|
|
|
|
switch (mMatcher.match(uri)) {
|
|
|
|
|
case URI_NOTE:
|
|
|
|
|
// 插入笔记
|
|
|
|
|
insertedId = noteId = db.insert(TABLE.NOTE, null, values);
|
|
|
|
|
break;
|
|
|
|
|
case URI_DATA:
|
|
|
|
|
// 插入数据
|
|
|
|
|
if (values.containsKey(DataColumns.NOTE_ID)) {
|
|
|
|
|
noteId = values.getAsLong(DataColumns.NOTE_ID);
|
|
|
|
|
} else {
|
|
|
|
|
@ -166,13 +209,13 @@ public class NotesProvider extends ContentProvider {
|
|
|
|
|
default:
|
|
|
|
|
throw new IllegalArgumentException("Unknown URI " + uri);
|
|
|
|
|
}
|
|
|
|
|
// Notify the note uri
|
|
|
|
|
// 通知笔记URI的观察者
|
|
|
|
|
if (noteId > 0) {
|
|
|
|
|
getContext().getContentResolver().notifyChange(
|
|
|
|
|
ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, noteId), null);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
// Notify the data uri
|
|
|
|
|
// 通知数据URI的观察者
|
|
|
|
|
if (dataId > 0) {
|
|
|
|
|
getContext().getContentResolver().notifyChange(
|
|
|
|
|
ContentUris.withAppendedId(Notes.CONTENT_DATA_URI, dataId), null);
|
|
|
|
|
@ -181,6 +224,13 @@ public class NotesProvider extends ContentProvider {
|
|
|
|
|
return ContentUris.withAppendedId(uri, insertedId);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* 处理删除请求
|
|
|
|
|
* @param uri 请求的URI
|
|
|
|
|
* @param selection 删除条件
|
|
|
|
|
* @param selectionArgs 删除条件参数
|
|
|
|
|
* @return 删除的行数
|
|
|
|
|
*/
|
|
|
|
|
@Override
|
|
|
|
|
public int delete(Uri uri, String selection, String[] selectionArgs) {
|
|
|
|
|
int count = 0;
|
|
|
|
|
@ -189,14 +239,15 @@ public class NotesProvider extends ContentProvider {
|
|
|
|
|
boolean deleteData = false;
|
|
|
|
|
switch (mMatcher.match(uri)) {
|
|
|
|
|
case URI_NOTE:
|
|
|
|
|
// 删除笔记，确保ID大于0（系统文件夹ID小于等于0）
|
|
|
|
|
selection = "(" + selection + ") AND " + NoteColumns.ID + ">0 ";
|
|
|
|
|
count = db.delete(TABLE.NOTE, selection, selectionArgs);
|
|
|
|
|
break;
|
|
|
|
|
case URI_NOTE_ITEM:
|
|
|
|
|
// 删除单个笔记
|
|
|
|
|
id = uri.getPathSegments().get(1);
|
|
|
|
|
/**
|
|
|
|
|
* ID that smaller than 0 is system folder which is not allowed to
|
|
|
|
|
* trash
|
|
|
|
|
* ID小于0的是系统文件夹，不允许删除
|
|
|
|
|
*/
|
|
|
|
|
long noteId = Long.valueOf(id);
|
|
|
|
|
if (noteId <= 0) {
|
|
|
|
|
@ -206,10 +257,12 @@ public class NotesProvider extends ContentProvider {
|
|
|
|
|
NoteColumns.ID + "=" + id + parseSelection(selection), selectionArgs);
|
|
|
|
|
break;
|
|
|
|
|
case URI_DATA:
|
|
|
|
|
// 删除数据
|
|
|
|
|
count = db.delete(TABLE.DATA, selection, selectionArgs);
|
|
|
|
|
deleteData = true;
|
|
|
|
|
break;
|
|
|
|
|
case URI_DATA_ITEM:
|
|
|
|
|
// 删除单个数据项
|
|
|
|
|
id = uri.getPathSegments().get(1);
|
|
|
|
|
count = db.delete(TABLE.DATA,
|
|
|
|
|
DataColumns.ID + "=" + id + parseSelection(selection), selectionArgs);
|
|
|
|
|
@ -219,14 +272,24 @@ public class NotesProvider extends ContentProvider {
|
|
|
|
|
throw new IllegalArgumentException("Unknown URI " + uri);
|
|
|
|
|
}
|
|
|
|
|
if (count > 0) {
|
|
|
|
|
// 如果删除了数据，通知笔记URI的观察者
|
|
|
|
|
if (deleteData) {
|
|
|
|
|
getContext().getContentResolver().notifyChange(Notes.CONTENT_NOTE_URI, null);
|
|
|
|
|
}
|
|
|
|
|
// 通知当前URI的观察者
|
|
|
|
|
getContext().getContentResolver().notifyChange(uri, null);
|
|
|
|
|
}
|
|
|
|
|
return count;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* 处理更新请求
|
|
|
|
|
* @param uri 请求的URI
|
|
|
|
|
* @param values 要更新的值
|
|
|
|
|
* @param selection 更新条件
|
|
|
|
|
* @param selectionArgs 更新条件参数
|
|
|
|
|
* @return 更新的行数
|
|
|
|
|
*/
|
|
|
|
|
@Override
|
|
|
|
|
public int update(Uri uri, ContentValues values, String selection, String[] selectionArgs) {
|
|
|
|
|
int count = 0;
|
|
|
|
|
@ -235,16 +298,19 @@ public class NotesProvider extends ContentProvider {
|
|
|
|
|
boolean updateData = false;
|
|
|
|
|
switch (mMatcher.match(uri)) {
|
|
|
|
|
case URI_NOTE:
|
|
|
|
|
// 更新笔记，增加版本号
|
|
|
|
|
increaseNoteVersion(-1, selection, selectionArgs);
|
|
|
|
|
count = db.update(TABLE.NOTE, values, selection, selectionArgs);
|
|
|
|
|
break;
|
|
|
|
|
case URI_NOTE_ITEM:
|
|
|
|
|
// 更新单个笔记，增加版本号
|
|
|
|
|
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:
|
|
|
|
|
// 更新数据
|
|
|
|
|
count = db.update(TABLE.DATA, values, selection, selectionArgs);
|
|
|
|
|
updateData = true;
|
|
|
|
|
break;
|
|
|
|
|
@ -267,10 +333,18 @@ public class NotesProvider extends ContentProvider {
|
|
|
|
|
return count;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* 解析选择条件
|
|
|
|
|
* 如果selection不为空，则添加AND前缀
|
|
|
|
|
*/
|
|
|
|
|
private String parseSelection(String selection) {
|
|
|
|
|
return (!TextUtils.isEmpty(selection) ? " AND (" + selection + ')' : "");
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* 增加笔记版本号
|
|
|
|
|
* 当笔记被更新时调用
|
|
|
|
|
*/
|
|
|
|
|
private void increaseNoteVersion(long id, String selection, String[] selectionArgs) {
|
|
|
|
|
StringBuilder sql = new StringBuilder(120);
|
|
|
|
|
sql.append("UPDATE ");
|
|
|
|
|
@ -296,6 +370,9 @@ public class NotesProvider extends ContentProvider {
|
|
|
|
|
mHelper.getWritableDatabase().execSQL(sql.toString());
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* 获取URI对应的MIME类型
|
|
|
|
|
*/
|
|
|
|
|
@Override
|
|
|
|
|
public String getType(Uri uri) {
|
|
|
|
|
// TODO Auto-generated method stub
|
|
|
|
|
|
