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FrameworkSQLiteOpenHelper.java
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FrameworkSQLiteOpenHelper.java
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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 alpha1.android.arch.persistence.db.framework;
import alpha1.android.arch.persistence.db.SupportSQLiteDatabase;
import alpha1.android.arch.persistence.db.SupportSQLiteOpenHelper;
import android.content.Context;
import android.database.DatabaseErrorHandler;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteOpenHelper;
import android.os.Build;
import android.support.annotation.RequiresApi;
class FrameworkSQLiteOpenHelper implements SupportSQLiteOpenHelper {
private final OpenHelper mDelegate;
FrameworkSQLiteOpenHelper(Context context, String name,
SQLiteDatabase.CursorFactory factory, int version,
DatabaseErrorHandler errorHandler,
SupportSQLiteOpenHelper.Callback callback) {
mDelegate = createDelegate(context, name, factory, version, errorHandler, callback);
}
private OpenHelper createDelegate(Context context, String name,
SQLiteDatabase.CursorFactory factory, int version, DatabaseErrorHandler errorHandler,
final Callback callback) {
return new OpenHelper(context, name, factory, version, errorHandler) {
@Override
public void onCreate(SQLiteDatabase sqLiteDatabase) {
mWrappedDb = new FrameworkSQLiteDatabase(sqLiteDatabase);
callback.onCreate(mWrappedDb);
}
@Override
public void onUpgrade(SQLiteDatabase sqLiteDatabase, int oldVersion, int newVersion) {
callback.onUpgrade(getWrappedDb(sqLiteDatabase), oldVersion, newVersion);
}
@Override
public void onConfigure(SQLiteDatabase db) {
callback.onConfigure(getWrappedDb(db));
}
@Override
public void onDowngrade(SQLiteDatabase db, int oldVersion, int newVersion) {
callback.onDowngrade(getWrappedDb(db), oldVersion, newVersion);
}
@Override
public void onOpen(SQLiteDatabase db) {
callback.onOpen(getWrappedDb(db));
}
};
}
@Override
public String getDatabaseName() {
return mDelegate.getDatabaseName();
}
@Override
@RequiresApi(api = Build.VERSION_CODES.JELLY_BEAN)
public void setWriteAheadLoggingEnabled(boolean enabled) {
mDelegate.setWriteAheadLoggingEnabled(enabled);
}
@Override
public SupportSQLiteDatabase getWritableDatabase() {
return mDelegate.getWritableSupportDatabase();
}
@Override
public SupportSQLiteDatabase getReadableDatabase() {
return mDelegate.getReadableSupportDatabase();
}
@Override
public void close() {
mDelegate.close();
}
abstract static class OpenHelper extends SQLiteOpenHelper {
FrameworkSQLiteDatabase mWrappedDb;
OpenHelper(Context context, String name,
SQLiteDatabase.CursorFactory factory, int version,
DatabaseErrorHandler errorHandler) {
super(context, name, factory, version, errorHandler);
}
SupportSQLiteDatabase getWritableSupportDatabase() {
SQLiteDatabase db = super.getWritableDatabase();
return getWrappedDb(db);
}
SupportSQLiteDatabase getReadableSupportDatabase() {
SQLiteDatabase db = super.getReadableDatabase();
return getWrappedDb(db);
}
FrameworkSQLiteDatabase getWrappedDb(SQLiteDatabase sqLiteDatabase) {
if (mWrappedDb == null) {
mWrappedDb = new FrameworkSQLiteDatabase(sqLiteDatabase);
}
return mWrappedDb;
}
@Override
public synchronized void close() {
super.close();
mWrappedDb = null;
}
}
}