| /* |
| * Copyright (C) 2014 The Android Open Source Project |
| * |
| * 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 com.android.settings.search; |
| |
| import android.content.Context; |
| import android.database.Cursor; |
| import android.database.sqlite.SQLiteDatabase; |
| import android.database.sqlite.SQLiteOpenHelper; |
| import android.os.Build; |
| import android.util.Log; |
| |
| public class IndexDatabaseHelper extends SQLiteOpenHelper { |
| |
| private static final String TAG = "IndexDatabaseHelper"; |
| |
| private static final String DATABASE_NAME = "search_index.db"; |
| private static final int DATABASE_VERSION = 115; |
| |
| public interface Tables { |
| public static final String TABLE_PREFS_INDEX = "prefs_index"; |
| public static final String TABLE_META_INDEX = "meta_index"; |
| public static final String TABLE_SAVED_QUERIES = "saved_queries"; |
| } |
| |
| public interface IndexColumns { |
| public static final String DOCID = "docid"; |
| public static final String LOCALE = "locale"; |
| public static final String DATA_RANK = "data_rank"; |
| public static final String DATA_TITLE = "data_title"; |
| public static final String DATA_TITLE_NORMALIZED = "data_title_normalized"; |
| public static final String DATA_SUMMARY_ON = "data_summary_on"; |
| public static final String DATA_SUMMARY_ON_NORMALIZED = "data_summary_on_normalized"; |
| public static final String DATA_SUMMARY_OFF = "data_summary_off"; |
| public static final String DATA_SUMMARY_OFF_NORMALIZED = "data_summary_off_normalized"; |
| public static final String DATA_ENTRIES = "data_entries"; |
| public static final String DATA_KEYWORDS = "data_keywords"; |
| public static final String CLASS_NAME = "class_name"; |
| public static final String SCREEN_TITLE = "screen_title"; |
| public static final String INTENT_ACTION = "intent_action"; |
| public static final String INTENT_TARGET_PACKAGE = "intent_target_package"; |
| public static final String INTENT_TARGET_CLASS = "intent_target_class"; |
| public static final String ICON = "icon"; |
| public static final String ENABLED = "enabled"; |
| public static final String DATA_KEY_REF = "data_key_reference"; |
| public static final String USER_ID = "user_id"; |
| } |
| |
| public interface MetaColumns { |
| public static final String BUILD = "build"; |
| } |
| |
| public interface SavedQueriesColums { |
| public static final String QUERY = "query"; |
| public static final String TIME_STAMP = "timestamp"; |
| } |
| |
| private static final String CREATE_INDEX_TABLE = |
| "CREATE VIRTUAL TABLE " + Tables.TABLE_PREFS_INDEX + " USING fts4" + |
| "(" + |
| IndexColumns.LOCALE + |
| ", " + |
| IndexColumns.DATA_RANK + |
| ", " + |
| IndexColumns.DATA_TITLE + |
| ", " + |
| IndexColumns.DATA_TITLE_NORMALIZED + |
| ", " + |
| IndexColumns.DATA_SUMMARY_ON + |
| ", " + |
| IndexColumns.DATA_SUMMARY_ON_NORMALIZED + |
| ", " + |
| IndexColumns.DATA_SUMMARY_OFF + |
| ", " + |
| IndexColumns.DATA_SUMMARY_OFF_NORMALIZED + |
| ", " + |
| IndexColumns.DATA_ENTRIES + |
| ", " + |
| IndexColumns.DATA_KEYWORDS + |
| ", " + |
| IndexColumns.SCREEN_TITLE + |
| ", " + |
| IndexColumns.CLASS_NAME + |
| ", " + |
| IndexColumns.ICON + |
| ", " + |
| IndexColumns.INTENT_ACTION + |
| ", " + |
| IndexColumns.INTENT_TARGET_PACKAGE + |
| ", " + |
| IndexColumns.INTENT_TARGET_CLASS + |
| ", " + |
| IndexColumns.ENABLED + |
| ", " + |
| IndexColumns.DATA_KEY_REF + |
| ", " + |
| IndexColumns.USER_ID + |
| ");"; |
| |
| private static final String CREATE_META_TABLE = |
| "CREATE TABLE " + Tables.TABLE_META_INDEX + |
| "(" + |
| MetaColumns.BUILD + " VARCHAR(32) NOT NULL" + |
| ")"; |
| |
| private static final String CREATE_SAVED_QUERIES_TABLE = |
| "CREATE TABLE " + Tables.TABLE_SAVED_QUERIES + |
| "(" + |
| SavedQueriesColums.QUERY + " VARCHAR(64) NOT NULL" + |
| ", " + |
| SavedQueriesColums.TIME_STAMP + " INTEGER" + |
| ")"; |
| |
| private static final String INSERT_BUILD_VERSION = |
| "INSERT INTO " + Tables.TABLE_META_INDEX + |
| " VALUES ('" + Build.VERSION.INCREMENTAL + "');"; |
| |
| private static final String SELECT_BUILD_VERSION = |
| "SELECT " + MetaColumns.BUILD + " FROM " + Tables.TABLE_META_INDEX + " LIMIT 1;"; |
| |
| private static IndexDatabaseHelper sSingleton; |
| |
| public static synchronized IndexDatabaseHelper getInstance(Context context) { |
| if (sSingleton == null) { |
| sSingleton = new IndexDatabaseHelper(context); |
| } |
| return sSingleton; |
| } |
| |
| public IndexDatabaseHelper(Context context) { |
| super(context, DATABASE_NAME, null, DATABASE_VERSION); |
| } |
| |
| @Override |
| public void onCreate(SQLiteDatabase db) { |
| bootstrapDB(db); |
| } |
| |
| private void bootstrapDB(SQLiteDatabase db) { |
| db.execSQL(CREATE_INDEX_TABLE); |
| db.execSQL(CREATE_META_TABLE); |
| db.execSQL(CREATE_SAVED_QUERIES_TABLE); |
| db.execSQL(INSERT_BUILD_VERSION); |
| Log.i(TAG, "Bootstrapped database"); |
| } |
| |
| @Override |
| public void onOpen(SQLiteDatabase db) { |
| super.onOpen(db); |
| |
| Log.i(TAG, "Using schema version: " + db.getVersion()); |
| |
| if (!Build.VERSION.INCREMENTAL.equals(getBuildVersion(db))) { |
| Log.w(TAG, "Index needs to be rebuilt as build-version is not the same"); |
| // We need to drop the tables and recreate them |
| reconstruct(db); |
| } else { |
| Log.i(TAG, "Index is fine"); |
| } |
| } |
| |
| @Override |
| public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) { |
| if (oldVersion < DATABASE_VERSION) { |
| Log.w(TAG, "Detected schema version '" + oldVersion + "'. " + |
| "Index needs to be rebuilt for schema version '" + newVersion + "'."); |
| // We need to drop the tables and recreate them |
| reconstruct(db); |
| } |
| } |
| |
| @Override |
| public void onDowngrade(SQLiteDatabase db, int oldVersion, int newVersion) { |
| Log.w(TAG, "Detected schema version '" + oldVersion + "'. " + |
| "Index needs to be rebuilt for schema version '" + newVersion + "'."); |
| // We need to drop the tables and recreate them |
| reconstruct(db); |
| } |
| |
| private void reconstruct(SQLiteDatabase db) { |
| dropTables(db); |
| bootstrapDB(db); |
| } |
| |
| private String getBuildVersion(SQLiteDatabase db) { |
| String version = null; |
| Cursor cursor = null; |
| try { |
| cursor = db.rawQuery(SELECT_BUILD_VERSION, null); |
| if (cursor.moveToFirst()) { |
| version = cursor.getString(0); |
| } |
| } |
| catch (Exception e) { |
| Log.e(TAG, "Cannot get build version from Index metadata"); |
| } |
| finally { |
| if (cursor != null) { |
| cursor.close(); |
| } |
| } |
| return version; |
| } |
| |
| private void dropTables(SQLiteDatabase db) { |
| db.execSQL("DROP TABLE IF EXISTS " + Tables.TABLE_META_INDEX); |
| db.execSQL("DROP TABLE IF EXISTS " + Tables.TABLE_PREFS_INDEX); |
| db.execSQL("DROP TABLE IF EXISTS " + Tables.TABLE_SAVED_QUERIES); |
| } |
| } |