content: /*
   * Copyright (C) 2017 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.example.android.persistence.migrations;
  
  import static com.example.android.persistence.migrations.UserPersistenceContract.UserEntry
          .COLUMN_NAME_ENTRY_ID;
  import static com.example.android.persistence.migrations.UserPersistenceContract.UserEntry
          .COLUMN_NAME_USERNAME;
  import static com.example.android.persistence.migrations.UserPersistenceContract.UserEntry
          .TABLE_NAME;
  
  import android.content.Context;
  import android.database.sqlite.SQLiteDatabase;
  import android.database.sqlite.SQLiteOpenHelper;
  
  public class UsersDbHelper extends SQLiteOpenHelper {
  
      public static final int DATABASE_VERSION = 1;
  
      public static final String DATABASE_NAME = "Sample.db";
  
      private static final String SQL_CREATE_ENTRIES =
              "CREATE TABLE " + TABLE_NAME + " (" +
                      COLUMN_NAME_ENTRY_ID + " INTEGER  PRIMARY KEY NOT NULL," +
                      COLUMN_NAME_USERNAME + " TEXT )";
  
      public UsersDbHelper(Context context) {
          super(context, DATABASE_NAME, null, DATABASE_VERSION);
      }
  
      public void onCreate(SQLiteDatabase db) {
          db.execSQL(SQL_CREATE_ENTRIES);
      }
  
      public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
          // Not required as at version 1
      }
  
      public void onDowngrade(SQLiteDatabase db, int oldVersion, int newVersion) {
          // Not required as at version 1
      }
  }
  