private static bool FillSchemaFromCache(ref MDataRow row, ref DbBase dbBase, string tableName, string sourceTableName)
{
bool returnResult = false;
string key = GetSchemaKey(tableName, dbBase.DataBase, dbBase.dalType);
if (CacheManage.LocalInstance.Contains(key))//缓存里获取
{
try
{
row = ((MDataColumn)CacheManage.LocalInstance.Get(key)).ToRow(sourceTableName);
returnResult = row.Count > 0;
}
catch (Exception err)
{
Log.WriteLogToTxt(err);
}
}
else if (!string.IsNullOrEmpty(AppConfig.DB.SchemaMapPath))
{
string fullPath = AppDomain.CurrentDomain.BaseDirectory + AppConfig.DB.SchemaMapPath + key + ".ts";
if (System.IO.File.Exists(fullPath))
{
MDataColumn mdcs = MDataColumn.CreateFrom(fullPath);
if (mdcs.Count > 0)
{
row = mdcs.ToRow(sourceTableName);
returnResult = row.Count > 0;
CacheManage.LocalInstance.Add(key, mdcs.Clone(), null, 1440);
}
}
}
return(returnResult);
}
private static bool FillSchemaFromDb(ref MDataRow row, ref DbBase dbBase, string tableName, string sourceTableName)
{
try
{
MDataColumn mdcs = null;
//if (tableName.IndexOf('(') > -1 && tableName.IndexOf(')') > -1)//自定义视图table
//{
// dbBase.tempSql = "view";//使用access方式加载列
//}
mdcs = GetColumns(tableName, ref dbBase);
if (mdcs.Count == 0)
{
return(false);
}
row = mdcs.ToRow(sourceTableName);
row.TableName = sourceTableName;
string key = GetSchemaKey(tableName, dbBase.DataBase, dbBase.dalType);
CacheManage.LocalInstance.Add(key, mdcs.Clone(), null, 1440);
switch (dbBase.dalType)//文本数据库不保存。
{
case DalType.Access:
case DalType.SQLite:
case DalType.MsSql:
case DalType.MySql:
case DalType.Oracle:
if (!string.IsNullOrEmpty(AppConfig.DB.SchemaMapPath))
{
string folderPath = AppDomain.CurrentDomain.BaseDirectory + AppConfig.DB.SchemaMapPath;
if (System.IO.Directory.Exists(folderPath))
{
mdcs.WriteSchema(folderPath + key + ".ts");
}
}
break;
}
return(true);
}
catch (Exception err)
{
Log.WriteLogToTxt(err);
return(false);
}
}
/// <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;
}
}
/// <summary>
/// 将原有的初始化改造成延时加载。
/// </summary>
private void SetDelayInit(Object entityInstance, string tableName, string conn, AopOp op)
{
if (string.IsNullOrEmpty(conn))
{
//不设置链接，则忽略（当成普通的实体类）
return;
}
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 + StaticTool.GetHashKey(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 = ColumnSchema.GetColumns(typeInfo);
ConnBean connBean = ConnBean.Create(conn);//下面指定链接，才不会在主从备时被切换到其它库。
if (!DBTool.ExistsTable(tableName, connBean.ConnString))
{
DBTool.ErrorMsg = null;
if (!DBTool.CreateTable(tableName, Columns, connBean.ConnString))
{
Error.Throw("SimpleOrmBase ：Create Table " + tableName + " Error:" + DBTool.ErrorMsg);
}
}
}
else if (isTxtDal)//文本数据库
{
if (FieldSource != FieldSource.Data)
{
MDataColumn c2 = ColumnSchema.GetColumns(typeInfo);
if (FieldSource == FieldSource.BothOfAll)
{
Columns.AddRange(c2);
}
else
{
Columns = c2;
}
}
}
if (Columns != null && Columns.Count > 0)
{
CacheManage.LocalInstance.Set(key, Columns, 1440, null);
}
}
else
{
Columns = CacheManage.LocalInstance.Get(key) as MDataColumn;
}
_Action = new MAction(Columns.ToRow(tableName), conn);
if (typeInfo.Name == "SysLogs")
{
_Action.SetAopState(Aop.AopOp.CloseAll);
}
else
{
_Action.SetAopState(op);
}
_Action.EndTransation();
}
catch (Exception err)
{
if (typeInfo.Name != "SysLogs")
{
Log.Write(err, LogType.DataBase);
}
throw;
}
}
