/// <summary>
/// 获取数据库对象的属性
/// </summary>
/// <returns></returns>
protected virtual DbProperties CreateProperties()
{
DBProvider factory = DBProvider.GetProvider(this.ProviderName);
DbProperties properties = factory.CreateDatabaseProperties(this);
return(properties);
}
/// <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 connectionString, string strDBtype)
{
if (string.IsNullOrEmpty(connectionString))
{
throw new ArgumentNullException("connectionString", String.Format(DbError.ConnstrNull));
}
if (string.IsNullOrEmpty(strDBtype))
{
throw new ArgumentNullException("providername", String.Format(DbError.ProviderNameNull));
}
string providername = getProviderName(strDBtype);
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);
if (null == datafact)
{
throw new ArgumentNullException("providername", String.Format(DbError.InvalidProviderNameForDBFactory, providername));
}
Database db = datafact.CreateDatabase(connectionString, providername, fact);
//设置名字
db.Name = name;
//返回实例
return(db);
}
//
// 集合实现
//
/// <summary>
/// add方法
/// </summary>
/// <param name="imp"> 提供者实例</param>
public void Add(DBProvider provider)
{
string name = provider.ProviderName;
string typename = provider.GetType().AssemblyQualifiedName;
DBProviderConfigElement ele = new DBProviderConfigElement(
name, typename, provider);
this.Add(ele);
}
//
// 方法
//
/// <summary>
/// 增加方法
/// </summary>
/// <param name="providerName"></param>
/// <param name="implemementation"></param>
internal void Add(string providerName, DBProvider provider)
{
DBProviderConfigElement ele = new DBProviderConfigElement(
providerName,
provider.GetType().AssemblyQualifiedName,
provider);
this.Providers.Add(ele);
}
/// <summary>
/// 注册实例
/// </summary>
/// <param name="imp"></param>
public static void RegisterProvider(DBProvider provider)
{
if (null == provider)
{
throw new Exception(DbError.ProviderFactoryNull);
}
RegisterProvider(provider.ProviderName, provider);
}
/// <summary>
/// 注册实例
/// </summary>
/// <param name="providername">实例类型</param>
/// <param name="imp">提供者</param>
public static void RegisterProvider(string providername, DBProvider provider)
{
if (null == provider)
{
throw new ArgumentNullException("factory");
}
if (string.IsNullOrEmpty(providername))
{
throw new ArgumentNullException("providername");
}
lock (_lock)
{
if (ConfiguredProviders.Contains(providername))
{
ConfiguredProviders.Remove(providername);
}
ConfiguredProviders.Add(providername, provider);
}
}
/// <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);
}