java/com/android/dialer/database/Database.java

/*
 * 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.dialer.database;

import android.content.Context;
import java.util.Objects;

/** Accessor for the database bindings. */
public class Database {

  private static DatabaseBindings databaseBindings;

  private Database() {}

  public static DatabaseBindings get(Context context) {
    Objects.requireNonNull(context);
    if (databaseBindings != null) {
      return databaseBindings;
    }

    Context application = context.getApplicationContext();
    if (application instanceof DatabaseBindingsFactory) {
      databaseBindings = ((DatabaseBindingsFactory) application).newDatabaseBindings();
    }

    if (databaseBindings == null) {
      databaseBindings = new DatabaseBindingsStub();
    }
    return databaseBindings;
  }
}