/// <summary>
/// 通过name 、数据库连接串、提供者名称， 创建database实例
/// </summary>
/// <param name="name">DBDatabase名称，唯一，主键</param>
/// <param name="connectionString">数据库连接串</param>
/// <param name="providername">数据库提供者名称</param>
/// <returns>database实例</returns>
public static Database Create(string name, string strDBType, string dbhost, string dbname, string dbuser, string dbpwd)
{
if (string.IsNullOrEmpty(strDBType))
{
throw new ArgumentNullException("DBType", String.Format(DbError.ConnstrNull));
}
string providername = getProviderName(strDBType);
if (string.IsNullOrEmpty(strDBType))
{
throw new ArgumentNullException("providername", String.Format(DbError.ProviderNameNull));
}
System.Data.Common.DbProviderFactory fact = System.Data.Common.DbProviderFactories.GetFactory(providername);
if (null == fact)
{
throw new ArgumentNullException("providername", String.Format(DbError.InvalidProviderNameForConn, providername));
}
DBProvider datafact = DBProvider.GetProvider(providername);
dbpwd = DataBaseCache.DealDecodePWD(dbpwd);
string connstring = datafact.getConnString(dbhost, dbname, dbuser, dbpwd);
if (null == datafact)
{
throw new ArgumentNullException("providername", String.Format(DbError.InvalidProviderNameForDBFactory, providername));
}
Database db = datafact.CreateDatabase(connstring, providername, fact);
//设置名字
db.Name = name;
//返回实例
return(db);
}
/// <summary>
/// 获取database对象
/// </summary>
/// <param name="dbname">database名称</param>
/// <returns>数据库类型，MSS Ora等</returns>
public static Database GetDB(string dbname)
{
if (string.IsNullOrEmpty(dbname)) dbname = DataBaseCache.DefDB;
Database db =DataBaseCache.getCacheDB(dbname);
return db;
}
