public TResult Excute()
{
using (var translator = DMObjectContainer.GetTSQLTranslator())
{
using (TranResult tr = translator.CreateAggregateTSQL <T1>(where.LambdaExpression, select.LambdaExpression, group.LambdaExpression, join.LambdaExpression))
{
using (ATSqlCommand cmd = new ATSqlCommand())
{
cmd.SetCmdText(tr.CmdText);
cmd.SetParameters(tr.Parameter.ToArray());
cmd.SetConnectionString(base.ConnectionString);
return(cmd.ExecuteScalar <TResult>());
}
}
}
}
public virtual PageList <TResult> ToPageList(int pageIndex, int pageSize)
{
PageList <TResult> pl = new PageList <TResult>();
using (var translator = DMObjectContainer.GetTSQLTranslator())
{
Expression <Func <T1, int> > count = (p) => p.DMCount("1");
using (TranResult countTr = translator.CreateAggregateTSQL <T1>(where.LambdaExpression, count, group.LambdaExpression, join.LambdaExpression))
{
using (ATSqlCommand countCmd = new ATSqlCommand())
{
countCmd.SetCmdText(countTr.CmdText);
countCmd.SetParameters(countTr.Parameter.ToArray());
countCmd.SetConnectionString(base.ConnectionString);
if (group.LambdaExpression != null)
{
pl.Total = countCmd.ToDataTable().Rows.Count;
}
else
{
pl.Total = countCmd.ExecuteScalar <int>();
}
pl.Index = pageIndex;
pl.Size = pageSize;
}
}
if (pl.Total != 0)
{
using (TranResult tr = translator.CreateSelectPageListTSQL <T1>(pageIndex, pageSize, where.LambdaExpression, order.LambdaExpression, select.LambdaExpression, group.LambdaExpression, join.LambdaExpression))
{
using (ATSqlCommand cmd = new ATSqlCommand())
{
cmd.SetCmdText(tr.CmdText);
cmd.SetParameters(tr.Parameter.ToArray());
cmd.SetConnectionString(base.ConnectionString);
pl.List = cmd.ToList <TResult>();
}
}
}
return(pl);
}
}
public override int Excute()
{
switch (DMConfiguration.ProviderType)
{
case EnumProviderType.MySql:
case EnumProviderType.MsSql:
using (var translator = DMObjectContainer.GetTSQLTranslator())
{
int id = 0;
Type type = typeof(T1);
var tm = type.GetTableMapping();
var pk = type.GetProperty(tm.PrimaryKey.Name);
TranResult tr = translator.CreateInsertTSQL <T1>(this.t, select.LambdaExpression);
if (pk != null && tm.PrimaryKey.IsPrimaryKey && tm.PrimaryKey.IsIdentity)
{
tr.CmdText += translator.GetIdentitySQL();
}
ATSqlCommand cmd = new ATSqlCommand();
cmd.SetCmdText(tr.CmdText);
cmd.SetParameters(tr.Parameter.ToArray());
cmd.SetTrans(base.trans);
cmd.SetConnectionString(base.ConnectionString);
id = cmd.ExecuteScalar();
if (pk != null && tm.PrimaryKey.IsPrimaryKey && tm.PrimaryKey.IsIdentity)
{
pk.SetValue(t, id, null);
}
return(id);
}
case EnumProviderType.Access:
return(this.AccessExcute());
default:
throw new NotSupportedException("不支持的数据库类型");
}
}
private int AccessExcute()
{
int id = 0;
Type type = typeof(T1);
var tm = type.GetTableMapping();
var pk = type.GetProperty(tm.PrimaryKey.Name);
using (var translator = DMObjectContainer.GetTSQLTranslator())
{
if (base.trans == null)
{
using (var dmTrans = new DMTransaction(this.ConnectionString))
{
try
{
//这里使用事务主要是为了锁表 目的是为了获取自增ID
TranResult tr = translator.CreateInsertTSQL <T1>(this.t, select.LambdaExpression);
ATSqlCommand cmd = new ATSqlCommand();
cmd.SetCmdText(tr.CmdText);
cmd.SetParameters(tr.Parameter.ToArray());
cmd.SetTrans(dmTrans.BeginTransaction());
cmd.ExecuteScalar();
if (pk != null && tm.PrimaryKey.IsPrimaryKey && tm.PrimaryKey.IsIdentity)
{
var identitySQL = translator.GetIdentitySQL(tm.Name);
ATSqlCommand accessCmd = new ATSqlCommand();
accessCmd.SetCmdText(identitySQL);
accessCmd.SetTrans(dmTrans.BeginTransaction());
id = accessCmd.ExecuteScalar();
pk.SetValue(t, id, null);
}
dmTrans.Commit();
}
catch
{
dmTrans.Rollback();
throw;
}
}
}
else
{
TranResult tr = translator.CreateInsertTSQL <T1>(this.t, select.LambdaExpression);
ATSqlCommand cmd = new ATSqlCommand();
cmd.SetCmdText(tr.CmdText);
cmd.SetParameters(tr.Parameter.ToArray());
cmd.SetTrans(base.trans);
cmd.ExecuteScalar();
if (pk != null && tm.PrimaryKey.IsPrimaryKey && tm.PrimaryKey.IsIdentity)
{
var identitySQL = translator.GetIdentitySQL(tm.Name);
ATSqlCommand accessCmd = new ATSqlCommand();
accessCmd.SetCmdText(identitySQL);
accessCmd.SetTrans(base.trans);
id = accessCmd.ExecuteScalar();
pk.SetValue(t, id, null);
}
}
}
return(id);
}