returns>泛型实体 public T FindById(object pkValue) { using (var db = DbFactory.GetSqlSugarClient.../ public IEnumerable FindAll() { using (var db = DbFactory.GetSqlSugarClient...public bool Delete(Expression> @where) { using (var db = DbFactory.GetSqlSugarClient... public bool DeleteById(object id) { using (var db = DbFactory.GetSqlSugarClient...returns> public bool DeleteByIds(object[] ids) { using (var db = DbFactory.GetSqlSugarClient
{ None, SQLServer, Oracle, ODBC, } public sealed class DbFactory...; try { using (DbDataAdapter dAdapter = DbFactory.CreateAdapter...; try { using (DbDataAdapter dAdapter = DbFactory.CreateAdapter...; using (DbCommand dc = DbFactory.CreateCommand(strSql, conn)) { ...; using (DbCommand dc = DbFactory.CreateCommand(strSql, conn)) {
" @Volatile private var dbFactory:DBFactory?...=null @Synchronized fun getInstance(context: Context):DBFactory{ if (dbFactory...== null) { dbFactory = create(context) } return dbFactory!!...} fun create(context: Context):DBFactory{ return Room.databaseBuilder(context,DBFactory...{ return DBFactory.getInstance(mContext).getStudent().findAll()?.
, IAccountDal accountDal) { _dbFactory = dbFactory;..._dbFactory = dbFactory; } private readonly Dictionary _accounts..., IAccountDal accountDal) { _dbFactory = dbFactory;..._dbFactory = dbFactory; } private readonly Dictionary _accounts...修改了DbFactory，实现一次开启链接之后，就是用相同链接的特性。 将IDbFactory标记为生命周期内单例。 在使用IAccountBll时，开启了一个生命周期。
connectionString); } public static DbConnection CreateConnection() { DbProviderFactory dbfactory...= DbProviderFactories.GetFactory(DbHelper.dbProviderName); DbConnection dbconn = dbfactory.CreateConnection...public static DbConnection CreateConnection(string connectionString) { DbProviderFactory dbfactory...= DbProviderFactories.GetFactory(DbHelper.dbProviderName); DbConnection dbconn = dbfactory.CreateConnection...return ds; } public DataTable ExecuteDataTable(DbCommand cmd) { DbProviderFactory dbfactory
连接sqlserver\n"; } public function query(){ echo "查询sqlserver\n"; } } class DbFactory...::Create('mysql'); $db->connect(); $db->query(); $db = DbFactory::Create...return new SqlServer(); } } class Client{ public static function main(){ $dbFactory...= new MysqlFatory(); $db = $dbFactory->create(); $db->connect(); $db->query(...); $dbFactory = new SqlServerFatory(); $db = $dbFactory->create(); $
ConnectionString { get { return _connectionString; } } } } 再创建一个数据库工厂管理类：DbFactory.cs...namespace TsBlog.Repositories { /// /// 数据库工厂 /// public class DbFactory...return entity; #endregion #region SqlSugar读取方式 using (var db = DbFactory.GetSqlSugarClient...ToList(); #endregion #region SqlSugar读取方式 using (var db = DbFactory.GetSqlSugarClient
() { try { // 读取 xml 文件 File fileinput = new File("E:/test.xml"); DocumentBuilderFactory dbFactory...= DocumentBuilderFactory .newInstance(); DocumentBuilder dBuilder = dbFactory.newDocumentBuilder
implementation group: 'org.iq80.leveldb', name: 'leveldb', version: '0.12' 基本操作 打开一个数据库文件： Iq80DBFactory...factory = Iq80DBFactory.factory; Options options = new Options(); DB db = factory.open...value： db.put(bytes("scores"), bytes("scoreJSON.toString())")); 这里用到了org.iq80.leveldb.impl.Iq80DBFactory
IEnumerable FindAll() { #region SqlSugar读取方式 using (var db = DbFactory.GetSqlSugarClient...// public int Insert(Post entity) { using (var db = DbFactory.GetSqlSugarClient.../ public bool Update(Post entity) { using (var db = DbFactory.GetSqlSugarClient.../ public bool Delete(Post entity) { using (var db = DbFactory.GetSqlSugarClient... public bool DeleteById(object id) { using (var db = DbFactory.GetSqlSugarClient
import java.io.IOException; public class ReadxmlByDom { private static DocumentBuilderFactory dbFactory...DocumentBuilder db = null; private static Document document = null; static{ try { dbFactory...= DocumentBuilderFactory.newInstance(); // dbFactory.setFeature("http://apache.org/xml/features.../disallow-doctype-decl", true); db = dbFactory.newDocumentBuilder(); } catch (ParserConfigurationException
try { File inputFile = new File("books.xml"); DocumentBuilderFactory dbFactory...= DocumentBuilderFactory.newInstance(); DocumentBuilder dBuilder = dbFactory.newDocumentBuilder...= DocumentBuilderFactory.newInstance(); DocumentBuilder dBuilder = dbFactory.newDocumentBuilder...= DocumentBuilderFactory.newInstance(); DocumentBuilder dBuilder = dbFactory.newDocumentBuilder...= DocumentBuilderFactory.newInstance(); DocumentBuilder dBuilder = dbFactory.newDocumentBuilder
10分钟看完，然后就可以开始做项目了 基于自己的使用习惯，我喜欢将与数据库相当的核心内容放在一起，基本的类如下 config.cs 数据库参数配置 DbFactory.cs 数据库实例化工厂 HttpRuntimeCache.cs...static string ConnectionString { get { return _connectionString; } } } DbFactory.cs...public class DbFactory { /// /// SqlSugarClient属性 /// </summary
第一种方法：在java代码中调用dbFactory.getDb().slaveOk(); 第二种方法：在java代码中调用 dbFactory.getDb().setReadPreference(ReadPreference.secondaryPreferred...());//在复制集中优先读secondary，如果secondary访问不了的时候就从master中读 或 dbFactory.getDb().setReadPreference(ReadPreference.secondary
Configuration public class MongoDBConfig { @Bean public MongoTemplate getMongoTemplate(MongoDbFactory dbFactory...,MappingMongoConverter converter) { MongoTemplate template = new MongoTemplate(dbFactory, converter
fFile.getParent() + "\\src\\xmlDemo.xml"; File fXmlFile = new File(xmlPath); DocumentBuilderFactory dbFactory...= DocumentBuilderFactory.newInstance(); DocumentBuilder dBuilder = dbFactory.newDocumentBuilder();
下面是我对原生API的封装： /** * LevelDB数据库操作类 */ class LevelBase extends SourceCode { static Iq80DBFactory...factory = Iq80DBFactory.factory static Options options = new Options() DB db /**
return */ public MongoDbFactory getDbFactory(String dataBaseName) { MongoDbFactory dbFactory...= null; try { dbFactory = new SimpleMongoDbFactory(getMongoClient(), dataBaseName...", e.getMessage()); } return dbFactory; } /** * 获取文件存储模块 * @return
上述代码中采用的是哈希取模的分表方式 使用 配置完成，下面开始使用，使用方式非常简单，与平常使用基本一致 首先获取分片仓储接口IShardingRepository IShardingRepository _db = DbFactory.GetRepository...ShardingConfig.DefaultDbGourpName) ); }); var db = DbFactory.GetShardingRepository...{ tasks.Add(Task.Run(() => { var db = DbFactory.GetShardingRepository....SetShardingRule(new Base_UnitTestShardingRule()); }); var db = DbFactory.GetRepository
//省略其它编写Java书的代码 14 return new JavaBook(); 15 } 16 } 17 public class DBFactory...javaFactory = new JavaFactory (); 2 JavaBook javaBook = javaFactory.createBook(); 3 BookFactory dbFactory...= new DBFactory (); 4 DBBook dbBook = dbFactory.createBook(); ?...如果大家对此不理解，可以回顾下工厂模式的案例，当时遇到这个需求，我们是通过添加CFactory类来实现的，原来的BookFactory和DBFactory并没有改动（它们对修改关闭了）。
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