/// <summary>
/// 根据数据库连接字符串初始化对象
/// </summary>
/// <param name="constr">提供数据库连接字符串，不能为null或空串</param>
protected DbAccessBase(string constr)
{
// 断言连接字符串不为null或空串
PreconditionAssert.IsFalse(string.IsNullOrEmpty(constr), ErrorMessages.DBConnectionStringIsNullOrEmpty);
_engine = new DbEngine(Factory, constr);
ConnectionTimeout = 60;
CommandTimeout = 60;
}
public int ExecCommand(DbCommand cmd)
{
PreconditionAssert.IsFalse(cmd == null, ErrorMessages.CommandTextIsNullOrEmpty);
try
{
_engine.BeginAction();
return(this.DoExecCommand(cmd));
}
finally
{
_engine.FinishAction();
}
}
