public async Task QueryByType(string type, Func <HashGroup, Task> action)
{
List <HashGroup> result = new List <HashGroup>();
int? index = null;
long count = 500;
//获取只读连接字符串
var strConn = _hashConnectionFactory.CreateReadForHash();
while (true)
{
result.Clear();
DBTransactionHelper.SqlTransactionWork(DBTypes.SqlServer, true, false, strConn, (conn, transaction) =>
{
SqlTransaction sqlTran = null;
if (transaction != null)
{
sqlTran = (SqlTransaction)transaction;
}
string strSql = string.Format(@"select top(@top) {0},{1} from HashGroup as g join HashGroupStrategy as s
on g.strategyid=s.id
where g.[type]=@type order by g.[sequence]", StoreHelper.GetHashGroupSelectFields("g"), StoreHelper.GetHashGroupStrategySelectFields("s"));
if (index != null)
{
strSql = string.Format(@"select top(@top) {0},{1} from HashGroup as g join HashGroupStrategy as s
on g.strategyid=s.id
where g.[type]=@type and g.[sequence]>@index order by g.[sequence]", StoreHelper.GetHashGroupSelectFields("g"), StoreHelper.GetHashGroupStrategySelectFields("s"));
}
using (SqlCommand commond = new SqlCommand()
{
Connection = (SqlConnection)conn,
CommandType = CommandType.Text,
Transaction = sqlTran,
CommandText = strSql
})
{
var parameter = new SqlParameter("@top", SqlDbType.Int)
{
Value = count
};
commond.Parameters.Add(parameter);
parameter = new SqlParameter("@type", SqlDbType.VarChar, 100)
{
Value = type
};
commond.Parameters.Add(parameter);
if (index != null)
{
parameter = new SqlParameter("@index", SqlDbType.BigInt)
{
Value = index
};
commond.Parameters.Add(parameter);
}
commond.Prepare();
SqlDataReader reader = null;
using (reader = commond.ExecuteReader())
{
while (reader.Read())
{
var group = new HashGroup();
StoreHelper.SetHashGroupSelectFields(group, reader, "g");
group.Strategy = new HashGroupStrategy();
StoreHelper.SetHashGroupStrategySelectFields(group.Strategy, reader, "s");
result.Add(group);
}
reader.Close();
}
}
});
foreach (var item in result)
{
await action(item);
}
if (result.Count < count)
{
break;
}
}
}
public async Task <QueryResult <HashGroup> > QueryByName(string name, int page, int pageSize)
{
QueryResult <HashGroup> result = new QueryResult <HashGroup>();
//获取只读连接字符串
var strConn = _hashConnectionFactory.CreateReadForHash();
await DBTransactionHelper.SqlTransactionWorkAsync(DBTypes.SqlServer, true, false, strConn, async (conn, transaction) =>
{
SqlTransaction sqlTran = null;
if (transaction != null)
{
sqlTran = (SqlTransaction)transaction;
}
using (SqlCommand commond = new SqlCommand()
{
Connection = (SqlConnection)conn,
CommandType = CommandType.Text,
Transaction = sqlTran,
CommandText = string.Format(@"set @currentpage=@page
select @count= count(*) from HashGroup as g join HashGroupStrategy as s on g.strategyid=s.id where g.[name] like @name
if @pagesize*@page>=@count
begin
set @currentpage= @count/@pagesize
if @count%@pagesize<>0
begin
set @currentpage=@currentpage+1
end
if @currentpage=0
set @currentpage=1
end
else if @page<1
begin
set @currentpage=1
end
select {0},{1} from HashGroup as g join HashGroupStrategy as s on g.strategyid=s.id where g.[name] like @name
order by sequence
offset (@pagesize * (@currentpage - 1)) rows
fetch next @pagesize rows only;" , StoreHelper.GetHashGroupSelectFields("g"), StoreHelper.GetHashGroupSelectFields("s"))
})
{
var parameter = new SqlParameter("@name", SqlDbType.VarChar, 150)
{
Value = $"{name.ToSqlLike()}%"
};
commond.Parameters.Add(parameter);
parameter = new SqlParameter("@page", SqlDbType.Int)
{
Value = page
};
commond.Parameters.Add(parameter);
parameter = new SqlParameter("@pagesize", SqlDbType.Int)
{
Value = pageSize
};
commond.Parameters.Add(parameter);
parameter = new SqlParameter("@count", SqlDbType.Int)
{
Direction = ParameterDirection.Output
};
commond.Parameters.Add(parameter);
parameter = new SqlParameter("@currentpage", SqlDbType.Int)
{
Direction = ParameterDirection.Output
};
commond.Parameters.Add(parameter);
commond.Prepare();
SqlDataReader reader = null;
using (reader = await commond.ExecuteReaderAsync())
{
while (await reader.ReadAsync())
{
var record = new HashGroup();
StoreHelper.SetHashGroupSelectFields(record, reader, "g");
record.Strategy = new HashGroupStrategy();
StoreHelper.SetHashGroupStrategySelectFields(record.Strategy, reader, "s");
result.Results.Add(record);
}
reader.Close();
result.TotalCount = (int)commond.Parameters["@count"].Value;
result.CurrentPage = (int)commond.Parameters["@currentpage"].Value;
}
}
});
return(result);
}
public HashGroup QueryByNameSync(string name)
{
HashGroup group = null;
//获取只读连接字符串
var strConn = _hashConnectionFactory.CreateReadForHash();
DBTransactionHelper.SqlTransactionWork(DBTypes.SqlServer, true, false, strConn, (conn, transaction) =>
{
SqlTransaction sqlTran = null;
if (transaction != null)
{
sqlTran = (SqlTransaction)transaction;
}
using (SqlCommand commond = new SqlCommand()
{
Connection = (SqlConnection)conn,
CommandType = CommandType.Text,
Transaction = sqlTran,
CommandText = string.Format(@"select {0},{1} from HashGroup as g join HashGroupStrategy as s
on g.strategyid=s.id
where g.[name]=@name", StoreHelper.GetHashGroupSelectFields("g"), StoreHelper.GetHashGroupStrategySelectFields("s"))
})
{
var parameter = new SqlParameter("@name", SqlDbType.VarChar, 100)
{
Value = name
};
commond.Parameters.Add(parameter);
commond.Prepare();
SqlDataReader reader = null;
using (reader = commond.ExecuteReader())
{
if (reader.Read())
{
group = new HashGroup();
StoreHelper.SetHashGroupSelectFields(group, reader, "g");
group.Strategy = new HashGroupStrategy();
StoreHelper.SetHashGroupStrategySelectFields(group.Strategy, reader, "s");
}
reader.Close();
}
}
});
return(group);
}
public async Task <HashGroup> QueryById(Guid id)
{
HashGroup group = null;
//获取只读连接字符串
var strConn = _hashConnectionFactory.CreateReadForHash();
await DBTransactionHelper.SqlTransactionWorkAsync(DBTypes.SqlServer, true, false, strConn, async (conn, transaction) =>
{
SqlTransaction sqlTran = null;
if (transaction != null)
{
sqlTran = (SqlTransaction)transaction;
}
using (SqlCommand commond = new SqlCommand()
{
Connection = (SqlConnection)conn,
CommandType = CommandType.Text,
Transaction = sqlTran,
CommandText = string.Format(@"select {0},{1} from HashGroup as g join HashGroupStrategy as s
on g.strategyid=s.id
where g.[id]=@id", StoreHelper.GetHashGroupSelectFields("g"), StoreHelper.GetHashGroupStrategySelectFields("s"))
})
{
var parameter = new SqlParameter("@id", SqlDbType.UniqueIdentifier)
{
Value = id
};
commond.Parameters.Add(parameter);
commond.Prepare();
SqlDataReader reader = null;
using (reader = await commond.ExecuteReaderAsync())
{
if (await reader.ReadAsync())
{
group = new HashGroup();
StoreHelper.SetHashGroupSelectFields(group, reader, "g");
group.Strategy = new HashGroupStrategy();
StoreHelper.SetHashGroupStrategySelectFields(group.Strategy, reader, "s");
}
reader.Close();
}
}
});
return(group);
}
