|
|
|
|
@ -1,22 +1,5 @@
|
|
|
|
|
/*
|
|
|
|
|
* Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
|
|
|
|
|
*
|
|
|
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
|
|
|
* you may not use this file except in compliance with the License.
|
|
|
|
|
* You may obtain a copy of the License at
|
|
|
|
|
*
|
|
|
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
|
|
|
*
|
|
|
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
|
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
|
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
|
|
|
* See the License for the specific language governing permissions and
|
|
|
|
|
* limitations under the License.
|
|
|
|
|
*/
|
|
|
|
|
|
|
|
|
|
package net.micode.notes.data;
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
import android.app.SearchManager;
|
|
|
|
|
import android.content.ContentProvider;
|
|
|
|
|
import android.content.ContentUris;
|
|
|
|
|
@ -33,9 +16,15 @@ 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;
|
|
|
|
|
@ -51,7 +40,9 @@ public class NotesProvider extends ContentProvider {
|
|
|
|
|
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);
|
|
|
|
|
@ -65,33 +56,40 @@ 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.
|
|
|
|
|
*/
|
|
|
|
|
// 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;
|
|
|
|
|
|
|
|
|
|
+ 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;
|
|
|
|
|
+ " 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());
|
|
|
|
|
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) {
|
|
|
|
|
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);
|
|
|
|
|
@ -113,6 +111,7 @@ public class NotesProvider extends ContentProvider {
|
|
|
|
|
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");
|
|
|
|
|
}
|
|
|
|
|
@ -120,6 +119,8 @@ public class NotesProvider extends ContentProvider {
|
|
|
|
|
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 {
|
|
|
|
|
@ -139,6 +140,7 @@ public class NotesProvider extends ContentProvider {
|
|
|
|
|
}
|
|
|
|
|
break;
|
|
|
|
|
default:
|
|
|
|
|
// 抛出异常
|
|
|
|
|
throw new IllegalArgumentException("Unknown URI " + uri);
|
|
|
|
|
}
|
|
|
|
|
if (c != null) {
|
|
|
|
|
@ -148,13 +150,17 @@ public class NotesProvider extends ContentProvider {
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
@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);
|
|
|
|
|
@ -167,6 +173,7 @@ public class NotesProvider extends ContentProvider {
|
|
|
|
|
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);
|
|
|
|
|
@ -178,13 +185,17 @@ public class NotesProvider extends ContentProvider {
|
|
|
|
|
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)) {
|
|
|
|
|
@ -228,6 +239,7 @@ public class NotesProvider extends ContentProvider {
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
@Override
|
|
|
|
|
// 更新一个uri
|
|
|
|
|
public int update(Uri uri, ContentValues values, String selection, String[] selectionArgs) {
|
|
|
|
|
int count = 0;
|
|
|
|
|
String id = null;
|
|
|
|
|
@ -267,10 +279,12 @@ public class NotesProvider extends ContentProvider {
|
|
|
|
|
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 ");
|
|
|
|
|
@ -293,6 +307,7 @@ public class NotesProvider extends ContentProvider {
|
|
|
|
|
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());
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
@ -302,4 +317,4 @@ public class NotesProvider extends ContentProvider {
|
|
|
|
|
return null;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
}
|
|
|
|
|
}
|
