public T GetItem(SqlFilter filter)
{
filter.Limit = 1;
List <T> arr = GetItems(filter);
T to = null;
if (arr.Count == 1)
{
to = arr[0];
}
return(to);
}
public string BuildSelectSql(SqlFilter filter)
{
SelectPart.Clear();
WherePart.Clear();
TableJoin.Clear();
OrderByPart.Clear();
Parameters.Clear();
if (filter.SP.Count > 0)
{
if (filter.Parmenters.Count > 0 && !string.IsNullOrEmpty(filter.SP.First().Value))
{
string[] parms = filter.SP.First().Value.Split(',');
foreach (string parm in parms)
{
if (filter.Parmenters.ContainsKey("@" + parm))
{
Parameters["@" + parm] = new SqlParameter("@" + parm, filter.Parmenters["@" + parm]);
}
}
}
return(filter.SP.First().Key);
}
string sql = "";
if (filter.Page > 0)
{
sql = _buildHasPage(filter);
}
else
{
sql = _buildNonePage(filter);
}
return(sql.ToString());
}
public List <T> GetItems(SqlFilter filter)
{
string sql = BuildSelectSql(filter);
SqlParameter[] arrayParameter = Parameters.Values.ToArray <SqlParameter>();
//build couchbase key
//string[] strParms = Parameters.Values.Select(p => {
// if (p.SqlDbType == SqlDbType.Int)
// return p.ParameterName + "=" + p.SqlValue.ToString();
// else
// return p.ParameterName + "=\"" + p.SqlValue.ToString()+"\"";
//}).ToArray();
//string key = !string.IsNullOrEmpty(filter.Identiy) ? filter.Identiy : typeof(T).Name + "_" + MD5Class.GetMD5ValueUTF8(sql) + "_" + string.Join(",", strParms);
//CouchbaseClient client = CouchbaseHelper.CreateInstance();
//if (filter.ForceRefresh || (!string.IsNullOrEmpty(RequestContext.Current.request["reloadcache"]) && RequestContext.Current.request["reloadcache"] == "1"))
//{
// client.Remove(key);
//}
List <T> list = null;
//if (!string.IsNullOrEmpty(filter.CacheKey))
// key = filter.CacheKey;
//if (client.KeyExists(key))
// list = client.Get<List<T>>(key);
//else
{
SqlDataReader reader = SqlHelper.ExecuteReader(SqlHelper.ConnStringYH, CommandType.Text, sql, arrayParameter);
if (reader.HasRows)
{
list = new List <T>();
while (reader.Read())
{
T to = new T();
to.Initialize(reader);
list.Add(to);
}
}
reader.Close();
reader.Dispose();
//if (list != null)
//{
// foreach (T to in list)
// {
// LateBind(filter.Binds, to);
// }
// if (filter.CacheLevel >0)
// {
// client.Store(StoreMode.Set, key, list, TransCacheLevel(filter.CacheLevel));
// }
//}
}
return(list);
}
private string _buildHasPage(SqlFilter filter)
{
foreach (string select in filter.Selects)
{
SelectMethods[select]();
}
BuildOrderBy(filter.Orders);
string strWhere = "", strFrom = "", orderPart = "";
StringBuilder sql = new StringBuilder();
sql.Append("with result as ( ");
sql.Append("select ");
if (filter.Limit > 0 && filter.Page > 0)
{
if (OrderByPart.Count > 0)
{
sql.Append(" ROW_NUMBER() OVER (ORDER BY ");
for (int i = 0; i < OrderByPart.Count; i++)
{
OrderByItem item = OrderByPart[i];
if (i > 0)
{
sql.Append(",");
}
switch (item.Type)
{
case OrderByType.ASC:
sql.Append(item.Table).Append(".").Append(item.Name);
sql.Append(" asc ");
break;
case OrderByType.DESC:
sql.Append(item.Table).Append(".").Append(item.Name);
sql.Append(" desc ");
break;
case OrderByType.RANDOM:
sql.Append(" newid() ");
break;
}
}
sql.Append(" ) AS 'RowNumber' ");
}
}
sql.Append(string.Join(",", SelectPart.ToArray()));
_buildFromAndWhere(filter, out strFrom, out strWhere);
sql.Append(strFrom).Append(strWhere);
sql.Append(" ); "); //end with result
sql.Append(" select * from result where RowNumber between ").Append(((filter.Page - 1) * 15) + 1).Append(" and ").Append(filter.Page * 15);
return(sql.ToString());
}
private string _buildNonePage(SqlFilter filter)
{
foreach (string select in filter.Selects)
{
SelectMethods[select]();
}
BuildOrderBy(filter.Orders);
BuildGroupBy(filter.Groups);
BuildJoin(filter.Joins);
string strWhere = "", strFrom = "";
StringBuilder sql = new StringBuilder();
sql.Append("select ");
if (filter.Limit > 0 && filter.Page == 0)
{
sql.Append(" top " + filter.Limit.ToString() + " ");
}
sql.Append(string.Join(",", SelectPart.ToArray()));
_buildFromAndWhere(filter, out strFrom, out strWhere);
sql.Append(strFrom).Append(strWhere);
if (GroupByPart.Count > 0)
{
sql.Append(" group by ");
for (int i = 0; i < GroupByPart.Count; i++)
{
GroupByItem item = GroupByPart[i];
if (i > 0)
{
sql.Append(",");
}
if (!string.IsNullOrEmpty(item.Table))
{
sql.Append(item.Table).Append(".").Append(item.Name);
}
else
{
sql.Append(item.Name);
}
}
}
if (OrderByPart.Count > 0)
{
sql.Append(" order by ");
for (int i = 0; i < OrderByPart.Count; i++)
{
OrderByItem item = OrderByPart[i];
if (i > 0)
{
sql.Append(",");
}
switch (item.Type)
{
case OrderByType.ASC:
sql.Append(item.Table).Append(".").Append(item.Name);
sql.Append(" asc ");
break;
case OrderByType.DESC:
sql.Append(item.Table).Append(".").Append(item.Name);
sql.Append(" desc ");
break;
case OrderByType.RANDOM:
sql.Append(" newid() ");
break;
}
}
}
return(sql.ToString());
}
private void _buildFromAndWhere(SqlFilter filter, out string strFrom, out string strWhere)
{
strWhere = " where ";
if (filter.Wheres.And.Count > 0)
{
foreach (KeyValuePair <string, string> where in filter.Wheres.And)
{
if (where.Value != null && where.Value.Contains("@"))
{
WhereMethods[where.Key](filter.Parmenters[where.Value]);
}
else
{
WhereMethods[where.Key](where.Value);
}
}
if (WherePart.Count > 0)
{
strWhere += string.Join(" and ", WherePart.ToArray());
}
}
bool flag = WherePart.Count > 0;
if (filter.Wheres.OR.Count > 0)
{
WherePart.Clear();
foreach (KeyValuePair <string, string> where in filter.Wheres.OR)
{
WhereMethods[where.Key](where.Value);
}
if (WherePart.Count > 0)
{
if (flag)
{
strWhere += " and ( ";
}
strWhere += string.Join(" or ", WherePart.ToArray());
if (flag)
{
strWhere += " )";
}
}
}
strFrom = " from ";
strFrom += TableName + " r ";
foreach (KeyValuePair <string, SqlJoin> join in TableJoin)
{
string format = string.Format("inner join {0} on r.{1} = {0}.{2}", join.Value.targettable, join.Value.columname, join.Value.targetcolumn);
strFrom += format;
}
}
