ParseSQLiteOpenHelper.java

/*
 * Copyright (c) 2015-present, Parse, LLC.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 */
package com.parse;

import android.content.Context;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteOpenHelper;

import bolts.Task;

/** package */ abstract class ParseSQLiteOpenHelper {

  private final SQLiteOpenHelper helper;

  public ParseSQLiteOpenHelper(Context context, String name, SQLiteDatabase.CursorFactory factory,
      int version) {
    helper = new SQLiteOpenHelper(context, name, factory, version) {
      @Override
      public void onOpen(SQLiteDatabase db) {
        super.onOpen(db);
        ParseSQLiteOpenHelper.this.onOpen(db);
      }

      @Override
      public void onCreate(SQLiteDatabase db) {
        ParseSQLiteOpenHelper.this.onCreate(db);
      }

      @Override
      public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
        ParseSQLiteOpenHelper.this.onUpgrade(db, oldVersion, newVersion);
      }
    };
  }

  public Task<ParseSQLiteDatabase> getReadableDatabaseAsync() {
    return getDatabaseAsync(false);
  }

  public Task<ParseSQLiteDatabase> getWritableDatabaseAsync() {
    return getDatabaseAsync(true);
  }

  private Task<ParseSQLiteDatabase> getDatabaseAsync(final boolean writable) {
    return ParseSQLiteDatabase.openDatabaseAsync(
        helper, !writable ? SQLiteDatabase.OPEN_READONLY : SQLiteDatabase.OPEN_READWRITE);
  }

  public void onOpen(SQLiteDatabase db) {
    // do nothing
  }

  public abstract void onCreate(SQLiteDatabase db);
  public abstract void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion);
}