public static DBAccessor Instance()
{
if (_instance == null)
{
_instance = new DBAccessor();
}
_instance.ConnectionDatabase();
return(_instance);
}
/// <summary>
/// 取得一个数据库访问器实例
/// </summary>
public static DBAccessor Instance(DBConnection dbc)
{
DBAccessor dba = new DBAccessor(dbc)
{
AccessorKey = string.Format("{0}_{1}", dbc.ConnName, Guid.NewGuid().ToString())
};
_cachedAccessor[dba.AccessorKey] = dba;
dba.ConnectionDatabase();
return(dba);
}
static Dbs()
{
DBAccessor.Load(Runtime.ConfigFilePath);
string path = Runtime.DbsFilePath;
if (Runtime.DbsFilePath != null && File.Exists(Runtime.DbsFilePath))
{
DbsManager dbsManager = null;
if (dbsManager == null)
{
dbsManager = DbsManager.Instance;
}
_dbsList.Clear();
DBAccessor.ClearCache();
if (dbsManager.DbsList != null)
{
foreach (var d in dbsManager.DbsList)
{
if (d.Value.CurrentConnectionString.IsNullOrWhiteSpace())
{
continue;
}
DBConnection dbc = new DBConnection()
{
ConnName = d.Key.QualifiedName,
ConnString = d.Value.CurrentConnectionString,
EdmConnString = d.Value.CurrentConnectionString,
Type = GetDbsType(d.Value.Provider.Code)
};
_dbsList.Add(new KeyValuePair <string, DBConnection>(dbc.ConnName, dbc));
}
}
Runtime.Dbs = _dbsList;
Dbs.DBConnections = _dbsList;
}
}
/// <summary>
/// 生产对应数据库类型的参数数组
/// </summary>
/// <param name="dbc"></param>
/// <returns></returns>
public static DbParameter CreateDbParameter(this DBAccessor dba, string paraName = "", object value = null)
{
return(dba.CurrentDBConnection.CreateDbParameter(ParameterDirection.Input, paraName, value));
}