public QueryResultList <TInfo> GetItems(SearchCondition search)
{
QueryResultList <TInfo> result;
try
{
LDB_DataContext ldb = LDB_DataContextFactory.CreateLDB(ConnectStr);
List <TInfo> infoes;
if (search != null)
{
infoes = GetingItems(ldb, search);
}
else
{
infoes = GetingAllItems(ldb);
}
result = new QueryResultList <TInfo>(ResultCode.Successful, successMsg, infoes);
}
catch (Exception ex)
{
result = new QueryResultList <TInfo>(ResultCode.Fail, "从数据库获取数据时发生错误!", new List <TInfo>());
ExceptionPolicy.HandleException(ex, this.GetType().Name + "." + "GetItems()");
}
return(result);
}
public CommandResult Insert(TInfo info)
{
CommandResult result;
try
{
LDB_DataContext ldb = LDB_DataContextFactory.CreateLDB(ConnectStr);
InsertingItem(info, ldb);
ldb.SubmitChanges();
result = new CommandResult(ResultCode.Successful, successMsg);
}
catch (System.Data.SqlClient.SqlException ex)
{
if (ex.Number == 2627)
{
result = new CommandResult(ResultCode.Fail, "不能插入重复ID的数据!");
}
else
{
result = new CommandResult(ResultCode.Fail, "数据在写入数据库时发生错误!");
}
ExceptionPolicy.HandleException(ex, this.GetType().Name + "." + "Insert()");
}
catch (Exception ex)
{
result = new CommandResult(ResultCode.Fail, "数据在写入数据库时发生错误!");
ExceptionPolicy.HandleException(ex, this.GetType().Name + "." + "Insert()");
}
return(result);
}
public CommandResult Delete(TInfo info)
{
CommandResult result;
try
{
LDB_DataContext ldb = LDB_DataContextFactory.CreateLDB(ConnectStr);
DeletingItem(info, ldb);
ldb.SubmitChanges();
result = new CommandResult(ResultCode.Successful, successMsg);
}
catch (Exception ex)
{
result = new CommandResult(ResultCode.Fail, "从数据库删除数据时发生错误!");
ExceptionPolicy.HandleException(ex, this.GetType().FullName + "." + "Delete()");
}
return(result);
}
public CommandResult Update(TInfo newVal, TInfo original)
{
CommandResult result;
try
{
LDB_DataContext ldb = LDB_DataContextFactory.CreateLDB(ConnectStr);
UpdatingItem(newVal, original, ldb);
ldb.SubmitChanges();
result = new CommandResult(ResultCode.Successful, successMsg);
}
catch (Exception ex)
{
result = new CommandResult(ResultCode.Fail, "数据在写入数据库时发生错误!");
ExceptionPolicy.HandleException(ex, this.GetType().FullName + "." + "Update()");
}
return(result);
}
public QueryResult <TInfo> GetByID(TID id)
{
QueryResult <TInfo> result;
try
{
LDB_DataContext ldb = LDB_DataContextFactory.CreateLDB(ConnectStr);
TInfo info = GetingItemByID(id, ldb);
if (info != null)
{
result = new QueryResult <TInfo>(ResultCode.Successful, successMsg, info);
}
else
{
result = new QueryResult <TInfo>(ResultCode.Fail, string.Format("没有找到ID={0}的数据!", id.ToString()), info);
}
}
catch (Exception ex)
{
result = new QueryResult <TInfo>(ResultCode.Fail, "从数据库获取数据时发生错误!", null);
ExceptionPolicy.HandleException(ex, this.GetType().Name + "." + "GetByID()");
}
return(result);
}
public LDB_UnitWork(string connStr)
{
_LDB = LDB_DataContextFactory.CreateLDB(connStr);
}
