package safeluck.drive.evaluation.DB;
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import android.content.Context;
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import android.util.Log;
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import androidx.annotation.NonNull;
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import androidx.room.Database;
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import androidx.room.Room;
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import androidx.room.RoomDatabase;
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import androidx.sqlite.db.SupportSQLiteDatabase;
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import androidx.work.OneTimeWorkRequest;
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import androidx.work.WorkManager;
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import java.util.concurrent.ExecutorService;
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import java.util.concurrent.Executors;
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/**
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* MyApplication2
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* Created by lzw on 2019/11/25. 11:13:23
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* 邮箱：632393724@qq.com
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* All Rights Saved! Chongqing AnYun Tech co. LTD
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*/
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@Database(entities = {Student.class},version = 1,exportSchema = false)
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public abstract class WorkRoomDataBase extends RoomDatabase {
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private static final String TAG = "WorkRoomDataBase";
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public abstract StudentDao getstudentDao();
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private static volatile WorkRoomDataBase workRoomDataBase;
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private static final int NUMBER_OF_THREADS = 4;
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static final ExecutorService dataBaseWriteExecutor = Executors.newFixedThreadPool(NUMBER_OF_THREADS);
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public static WorkRoomDataBase getWorkRoomDataBase(final Context mContext){
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if (workRoomDataBase == null){
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synchronized (WorkRoomDataBase.class){
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if (workRoomDataBase == null){
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workRoomDataBase = Room.databaseBuilder(mContext.getApplicationContext(),WorkRoomDataBase.class,"work_database")
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.addCallback(new Callback() {
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@Override
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public void onCreate(@NonNull SupportSQLiteDatabase db) {
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super.onCreate(db);
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OneTimeWorkRequest oneTimeWorkRequest = OneTimeWorkRequest.from(SeedDatabaseWorker.class);
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Log.i(TAG, "onCreate: 创建数据库后建立数据表插入数据");
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WorkManager.getInstance(mContext).enqueue(oneTimeWorkRequest);
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}
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})
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.build();
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}
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}
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}
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return workRoomDataBase;
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}
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}
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