1 /* Copyright (C) 2017 MariaDB Corporation
2 
3    This program is free software; you can redistribute it and/or
4    modify it under the terms of the GNU General Public License
5    as published by the Free Software Foundation; version 2 of
6    the License.
7 
8    This program is distributed in the hope that it will be useful,
9    but WITHOUT ANY WARRANTY; without even the implied warranty of
10    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
11    GNU General Public License for more details.
12 
13    You should have received a copy of the GNU General Public License
14    along with this program; if not, write to the Free Software
15    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
16    MA 02110-1301, USA. */
17 
18 /***********************************************************************
19 *   $Id$
20 *
21 *   regr_sxx.h
22 ***********************************************************************/
23 
24 /**
25  * Columnstore interface for for the regr_sxx function
26  *
27  *
28  *    CREATE AGGREGATE FUNCTION regr_sxx returns REAL soname 'libregr_mysql.so';
29  *
30  */
31 #ifndef HEADER_regr_sxx
32 #define HEADER_regr_sxx
33 
34 #include <cstdlib>
35 #include <string>
36 #include <vector>
37 #ifdef _MSC_VER
38 #include <unordered_map>
39 #else
40 #include <tr1/unordered_map>
41 #endif
42 
43 #include "mcsv1_udaf.h"
44 #include "calpontsystemcatalog.h"
45 #include "windowfunctioncolumn.h"
46 
47 #if defined(_MSC_VER) && defined(xxxRGNODE_DLLEXPORT)
48 #define EXPORT __declspec(dllexport)
49 #else
50 #define EXPORT
51 #endif
52 
53 namespace mcsv1sdk
54 {
55 
56 // Return the regr_sxx value of the dataset
57 
58 class regr_sxx : public  mcsv1_UDAF
59 {
60 public:
61     // Defaults OK
regr_sxx()62     regr_sxx() : mcsv1_UDAF() {};
~regr_sxx()63     virtual ~regr_sxx() {};
64 
65     virtual ReturnCode init(mcsv1Context* context,
66                             ColumnDatum* colTypes);
67 
68     virtual ReturnCode reset(mcsv1Context* context);
69 
70     virtual ReturnCode nextValue(mcsv1Context* context, ColumnDatum* valsIn);
71 
72     virtual ReturnCode subEvaluate(mcsv1Context* context, const UserData* valIn);
73 
74     virtual ReturnCode evaluate(mcsv1Context* context, static_any::any& valOut);
75 
76     virtual ReturnCode dropValue(mcsv1Context* context, ColumnDatum* valsDropped);
77 
78 protected:
79 };
80 
81 };  // namespace
82 
83 #undef EXPORT
84 
85 #endif // HEADER_regr_sxx.h
86 
87