/// <summary>
/// 获取表列架构（链接错误时，抛异常）
/// </summary>
/// <param name="tableName">表名</param>
/// <param name="conn">数据库链接</param>
/// <param name="errInfo">出错时的错误信息</param>
/// <returns></returns>
public static MDataColumn GetColumns(string tableName, string conn, out string errInfo)
{
errInfo = string.Empty;
DbBase helper = DalCreate.CreateDal(conn);
helper.ChangeDatabaseWithCheck(tableName);//检测dbname.dbo.tablename的情况
if (!helper.TestConn())
{
errInfo = helper.debugInfo.ToString();
if (string.IsNullOrEmpty(errInfo))
{
errInfo = "Open database fail : " + tableName;
}
helper.Dispose();
Error.Throw(errInfo);
return(null);
}
if (!tableName.Contains(" "))
{
tableName = GetMapTableName(conn, tableName);
}
MDataColumn mdc = TableSchema.GetColumns(tableName, ref helper);
helper.Dispose();
return(mdc);
}
/// <summary>
/// 获取表列架构（链接错误时，抛异常）
/// </summary>
/// <param name="tableName">表名</param>
/// <param name="conn">数据库链接</param>
/// <param name="errInfo">出错时的错误信息</param>
/// <returns></returns>
public static MDataColumn GetColumns(string tableName, string conn, out string errInfo)
{
errInfo = string.Empty;
try
{
return(TableSchema.GetColumns(tableName, conn));
}
catch (Exception err)
{
errInfo = err.Message;
return(null);
}
}
/// <summary>
/// 获取表列架构（链接错误时，抛异常）
/// </summary>
/// <param name="tableName">表名</param>
/// <param name="conn">数据库链接</param>
/// <param name="errInfo">出错时的错误信息</param>
/// <returns></returns>
public static MDataColumn GetColumns(string tableName, string conn, out string errInfo)
{
errInfo = string.Empty;
DbBase helper = DalCreate.CreateDal(conn);
DbResetResult result = helper.ChangeDatabaseWithCheck(tableName);//检测dbname.dbo.tablename的情况
switch (result)
{
case DbResetResult.No_DBNoExists:
helper.Dispose();
return(null);
case DbResetResult.No_SaveDbName:
case DbResetResult.Yes:
tableName = SqlFormat.NotKeyword(tableName); //same database no need database.tablename
break;
}
if (!helper.TestConn(AllowConnLevel.MaterBackupSlave))
{
errInfo = helper.debugInfo.ToString();
if (string.IsNullOrEmpty(errInfo))
{
errInfo = "Open database fail : " + tableName;
}
helper.Dispose();
Error.Throw(errInfo);
return(null);
}
if (!tableName.Contains(" "))//
{
tableName = GetMapTableName(conn, tableName);
}
MDataColumn mdc = TableSchema.GetColumns(tableName, ref helper);
helper.Dispose();
return(mdc);
}
/// <summary>
/// 获取表列架构
/// </summary>
public static MDataColumn GetColumns(Type typeInfo)
{
return(TableSchema.GetColumns(typeInfo));
}
/// <summary>
/// 初始化状态[继承此基类的实体在构造函数中需调用此方法]
/// </summary>
/// <param name="entityInstance">实体对象,一般写:this</param>
/// <param name="tableName">表名,如:Users</param>
/// <param name="conn">数据链接,单数据库时可写Null,或写默认链接配置项:"Conn",或直接数据库链接字符串</param>
protected void SetInit(Object entityInstance, string tableName, string conn)
{
conn = string.IsNullOrEmpty(conn) ? AppConfig.DB.DefaultConn : conn;
entity = entityInstance;
typeInfo = entity.GetType();
try
{
if (string.IsNullOrEmpty(tableName))
{
tableName = typeInfo.Name;
if (tableName.EndsWith(AppConfig.EntitySuffix))
{
tableName = tableName.Substring(0, tableName.Length - AppConfig.EntitySuffix.Length);
}
}
string key = tableName + MD5.Get(conn);
if (!CacheManage.LocalInstance.Contains(key))
{
DalType dal = DBTool.GetDalType(conn);
bool isTxtDal = dal == DalType.Txt || dal == DalType.Xml;
string errMsg = string.Empty;
Columns = DBTool.GetColumns(tableName, conn, out errMsg);//内部链接错误时抛异常。
if (Columns == null || Columns.Count == 0)
{
if (errMsg != string.Empty)
{
Error.Throw(errMsg);
}
Columns = TableSchema.GetColumns(typeInfo);
if (!DBTool.ExistsTable(tableName, conn))
{
if (!DBTool.CreateTable(tableName, Columns, conn))
{
Error.Throw("Create Table Error:" + tableName);
}
}
}
else if (isTxtDal)//文本数据库
{
if (FieldSource != FieldSource.Data)
{
MDataColumn c2 = TableSchema.GetColumns(typeInfo);
if (FieldSource == FieldSource.BothOfAll)
{
Columns.AddRange(c2);
}
else
{
Columns = c2;
}
}
}
if (Columns != null && Columns.Count > 0)
{
CacheManage.LocalInstance.Add(key, Columns, null, 1440);
}
}
else
{
Columns = CacheManage.LocalInstance.Get(key) as MDataColumn;
}
action = new MAction(Columns.ToRow(tableName), conn);
if (typeInfo.Name == "SysLogs")
{
action.SetAopOff();
}
action.EndTransation();
}
catch (Exception err)
{
if (typeInfo.Name != "SysLogs")
{
Log.WriteLogToTxt(err);
}
throw;
}
}
