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/*
* Copyright (C) 2016 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.providers.blockednumber;
import android.content.Context;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteOpenHelper;
import android.provider.BlockedNumberContract.BlockedNumbers;
import com.android.internal.annotations.VisibleForTesting;
import com.android.internal.util.Preconditions;
public class BlockedNumberDatabaseHelper {
private static final int DATABASE_VERSION = 2;
private static final String DATABASE_NAME = "blockednumbers.db";
private static final int IDLE_CONNECTION_TIMEOUT_MS = 30000;
private static BlockedNumberDatabaseHelper sInstance;
private final Context mContext;
private final OpenHelper mOpenHelper;
public interface Tables {
String BLOCKED_NUMBERS = "blocked";
}
private static final class OpenHelper extends SQLiteOpenHelper {
public OpenHelper(Context context, String name, SQLiteDatabase.CursorFactory factory,
int version) {
super(context, name, factory, version);
// Memory optimization - close idle connections after 30s of inactivity
setIdleConnectionTimeout(IDLE_CONNECTION_TIMEOUT_MS);
}
@Override
public void onCreate(SQLiteDatabase db) {
createTables(db);
}
@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
if (oldVersion < 2) {
db.execSQL("DROP TABLE IF EXISTS blocked");
createTables(db);
}
}
private void createTables(SQLiteDatabase db) {
db.execSQL("CREATE TABLE " + Tables.BLOCKED_NUMBERS + " (" +
BlockedNumbers.COLUMN_ID + " INTEGER PRIMARY KEY AUTOINCREMENT," +
BlockedNumbers.COLUMN_ORIGINAL_NUMBER + " TEXT NOT NULL UNIQUE," +
BlockedNumbers.COLUMN_E164_NUMBER + " TEXT" +
")");
db.execSQL("CREATE INDEX blocked_number_idx_original ON " + Tables.BLOCKED_NUMBERS +
" (" + BlockedNumbers.COLUMN_ORIGINAL_NUMBER + ");");
db.execSQL("CREATE INDEX blocked_number_idx_e164 ON " + Tables.BLOCKED_NUMBERS + " (" +
BlockedNumbers.COLUMN_E164_NUMBER +
");");
}
}
@VisibleForTesting
public static BlockedNumberDatabaseHelper newInstanceForTest(Context context) {
return new BlockedNumberDatabaseHelper(context, /* instanceIsForTesting =*/ true);
}
private BlockedNumberDatabaseHelper(Context context, boolean instanceIsForTesting) {
Preconditions.checkNotNull(context);
mContext = context;
mOpenHelper = new OpenHelper(mContext,
instanceIsForTesting ? null : DATABASE_NAME, null, DATABASE_VERSION);
}
public static synchronized BlockedNumberDatabaseHelper getInstance(Context context) {
if (sInstance == null) {
sInstance = new BlockedNumberDatabaseHelper(
context,
/* instanceIsForTesting = */ false);
}
return sInstance;
}
public SQLiteDatabase getReadableDatabase() {
return mOpenHelper.getReadableDatabase();
}
public SQLiteDatabase getWritableDatabase() {
return mOpenHelper.getWritableDatabase();
}
public void wipeForTest() {
getWritableDatabase().execSQL("DELETE FROM " + Tables.BLOCKED_NUMBERS);
}
}
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