设计模式&法则 抽象工厂 依赖倒置 产品类族 DBService 仅包含一个 AbsDaoDelegate 的引用，通过建造者模式创建它的实例。...源码如下： public final class DBService { private AbsDaoDelegate mDaoDelegate; public DBService... build() { checkEmptyFields(); return new DBService(this); } } } 注意，DBService...createDBService(); } DBServiceStore 定义了创建 DBService 的方法，看起来和 DBServiceFactory 有点儿像，但意义不同。...商店并不负责造产品，只是根据用户传入的工厂来提供对应的产品 DBService，自己并不会负责去造产品。如果是这样的话，那商店未免也太辛苦了不是吗？
dbService; @Override public void run(String... args) { MyData myData = new MyData(1L...= new MyData(3L, "author"); dbService.insertDataWithNamedParam(myData3); log.info("...findDataById: {}", dbService.findDataById(1L)); log.info("findDataByName: {}", dbService.findDataByName...("test")); log.info("findDataWithRowMapper: {}", dbService.findDataWithRowMapper());...("countByName: {}", dbService.countByName("test")); } public static void main(String[] args)
android.database.sqlite.SQLiteOpenHelper; import android.database.sqlite.SQLiteQueryBuilder; public class DBService...extends SQLiteOpenHelper { //使用SQLiteOpenHelper创建数据库 public DBService(Context context) { super...db; public StudentService(Context context){ //构造方法实例化DBService db=new DBService(context); }...; import android.util.Log; public class Test extends AndroidTestCase{ public void testSave(){ DBService...db=new DBService(this.getContext()); db.getWritableDatabase(); } public void testSaveStudent
javax.swing.JLabel; import javax.swing.JOptionPane; import javax.swing.JPanel; import com.xmlDemo.service.DBService...new JPanel(); JLabel label1 = new JLabel("数据库:"); List list1 = new DBService...JLabel("数据表:"); //创建一个模型 model = new DefaultComboBoxModel(); try { list2 = new DBService...()==ItemEvent.SELECTED){//选中JComboBox组件 dbName = ""+e.getItem();//获取字符串 try { list2 = new DBService...java.util.ArrayList; import java.util.List; import com.xmlDemo.util.DBConnectionUtil; public class DBService
目前完成了dbservice的服务，包括create schema/delete schema/query schema meta/set kv/get kv/del kv的功能。...如果是fundb-server的架构，所有来自客户端的请求都路由到go服务端的grpc服务，然后采用多线程和本地套接字的方式的转发到dbservice层，请求由dbservice处理完成后在给go的服务层.../build.sh 编译存储engine服务 $ cd fundb-server/module/dbservice && .
. // getter 、setter } 创建一个单例的 DBService ，并提供返回 CacheEntityDao 的方法。其实，crud 的逻辑也可以放在此处。...public class DBService { private static final String DB_NAME = "cache.db"; private static volatile...DBService defaultInstance; private DaoSession daoSession; private DBService(Context context...) { if (defaultInstance == null) { defaultInstance = new DBService...(); dbService = DBService.getInstance(appContext); } @Test public void testWithObject
targetPackage="com.example.database" android:label="Tests for My App" /> 2.创建一个数据库文件dbservice.java...android.database.sqlite.SQLiteDatabase; import android.database.sqlite.SQLiteOpenHelper; public class Dbservice...extends SQLiteOpenHelper{ public Dbservice(Context context) { super(context, "contacts.db", null...db; final String mytag="mydb"; public dataOperation(Context context) { this.db = new Dbservice...db1= new Dbservice(this.getContext()); db1.getWritableDatabase(); } public void adddbdata() {
answer; public String explaination; public int ID ; //用户选择的答案 public int selectedAnswer; } DBService...java.util.List; /** * Created by lenovo on 2017/12/4. */ //连接数据库，并从数据库中获取所需数据 public class DBService...{ private SQLiteDatabase db; //在构造函数中打开指定数据库，并把它的引用指向db public DBService(){ db=SQLiteDatabase.openDatabase...savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_exam); DBService...dbService = new DBService(); final List<Question list = dbService.getQuestion(); count = list.size
时间后缀 */ void createTable(String preName, Boolean isSufTime); } DbServiceImpl.java @Service("dbService...") public class DbServiceimpl implements DbService { @Autowired private DbMapper dbMapper;..."sys_user_log"; @Override public void work() { try { //创建表 DbService...dbService = (SysDbService) SpringUtil.getBean("sysDbService"); dbService.createTable(tableName...dbService; /** * sys_user_log */ private static String preTableName = "sys_user_log
Exception { throw new DemoException("自定义异常-Service"); } @Override public void dbService...throw new SQLException("未知异常-Controller"); } @RequestMapping("/dbS") public void dbService...() throws Exception{ exceptionService.dbService(); } @RequestMapping("/myS") public...throw new SQLException("未知异常-Controller"); } @RequestMapping("/dbS") public void dbService...() throws Exception{ exceptionService.dbService(); } @RequestMapping("/myS") public
loglogonBillModel modelLog) { if (modelLog == null) return; DbSqlAndParam dbSql = dbService.GeneSqlAndParamToInsert...(modelLog, "log_logon"); dbService.ExecSqlAndParamByTrans(new List<DbSqlAndParam
Service { return s.services[name] } 使用示例 go func main() { locator := NewServiceLocator() dbService...:= &DatabaseService{} emailService := &EmailService{} locator.AddService(dbService) locator.AddService
import java.sql.SQLOutput; import java.util.ArrayList; import java.util.List; @Component public class DBService...HBaseService { @Autowired private Connection hbaseConnection; @Autowired private DBService...dbService; /* * 制氢厂数据写入HBase数据库表 * 数据库表RowKey = : *...IOException { Admin admin = hbaseConnection.getAdmin(); List columnFamily = dbService.getColumnFamily
// 增删改都是jdbcTemplate.update方法，只有查询方法不一样，有query,queryForObject,queryForList等 @Component public class DBService...静态变量或静态语句块 –> 实例变量或初始化语句块 –> 构造方法 –> @Autowired private RedisService redisService; private DBService...dbService; /* 构造方法注入 public FourController(RedisService redisService) { this.redisService...// 推荐使用基于set的自动注入,可以在构造函数执行之后才自动注入 @Autowired private void init(RedisService redisService, DBService...dbService) { this.redisService = redisService; this.dbService = dbService; }
DBService是实现数据库操作的Service类，DBToXmlService是实现从数据库导出xml文件的Service类，XmlToDBService是实现从xml文件导入数据库的Service...javax.swing.JPanel; import javax.swing.JScrollPane; import javax.swing.JTextArea; import com.xmlDemo.service.DBService...JLabel label = new JLabel("数据库:"); try { list = new DBService...JLabel label = new JLabel("数据库:"); try { list = new DBService...java.util.ArrayList; import java.util.List; import com.xmlDemo.util.DBConnectionUtil; public class DBService
1521)) (FAILOVER=yes)(LOAD_BALANCE=no)(CONNECT_DATA=(SERVER=DEDICATED) (SERVICE_NAME=dbservice.company.com
android.net.Uri; import android.util.Log; public class contactsProvider extends ContentProvider { private Dbservice...return null; } @Override public boolean onCreate() { // TODO Auto-generated method stub db=new Dbservice
description = req.body.description; const url = req.url; log( url endpoint , url); // 大量代码逻辑 dbService.createPerson...res) { const { body: { name, description }, url } = req; log( url endpoint , url); // 大量代码逻辑 dbService.createPerson
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