evolution/add-index/driver.cxx


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166

// file      : evolution/add-index/driver.cxx
// copyright : Copyright (c) 2009-2017 Code Synthesis Tools CC
// license   : GNU GPL v2; see accompanying LICENSE file

// Test adding a new index.
//

#include <memory>   // std::auto_ptr
#include <cassert>
#include <iostream>

#include <odb/database.hxx>
#include <odb/transaction.hxx>
#include <odb/schema-catalog.hxx>

#include <common/common.hxx>

#include "test2.hxx"
#include "test3.hxx"
#include "test2-odb.hxx"
#include "test3-odb.hxx"

using namespace std;
using namespace odb::core;

int
main (int argc, char* argv[])
{
  try
  {
    auto_ptr<database> db (create_database (argc, argv, false));
    bool embedded (schema_catalog::exists (*db));

    // 1 - base version
    // 2 - migration
    // 3 - current version
    //
    unsigned short pass (*argv[argc - 1] - '0');

    switch (pass)
    {
    case 1:
      {
        using namespace v2;

        if (embedded)
        {
          transaction t (db->begin ());
          schema_catalog::drop_schema (*db);
          schema_catalog::create_schema (*db, "", false);
          schema_catalog::migrate_schema (*db, 2);
          t.commit ();
        }

        object o0 (0);
        o0.num = 123;

        object o1 (1);
        o1.num = 234;

        object o2 (2);
        o2.num = 234;

        // Duplicates are ok.
        //
        {
          transaction t (db->begin ());
          db->persist (o0);
          db->persist (o1);
          db->persist (o2);
          t.commit ();
        }
        break;
      }
    case 2:
      {
        using namespace v3;

        if (embedded)
        {
          transaction t (db->begin ());
          schema_catalog::migrate_schema_pre (*db, 3);
          t.commit ();
        }

        object o3 (3);
        o3.num = 234;

        // Duplicates are still ok but we need to remove them before the
        // post migration step.
        //
        {
          transaction t (db->begin ());
          db->persist (o3);
          t.commit ();
        }

        {
          typedef odb::query<object> query;
          typedef odb::result<object> result;

          transaction t (db->begin ());
          result r (db->query<object> (
                      "ORDER BY" + query::num + "," + query::id));

          unsigned long prev (0);
          for (result::iterator i (r.begin ()); i != r.end (); ++i)
          {
            if (i->num == prev)
              db->erase (*i);

            prev = i->num;
          }

          t.commit ();
        }

        if (embedded)
        {
          transaction t (db->begin ());
          schema_catalog::migrate_schema_post (*db, 3);
          t.commit ();
        }
        break;
      }
    case 3:
      {
        using namespace v3;

        {
          transaction t (db->begin ());
          auto_ptr<object> p0 (db->load<object> (0));
          auto_ptr<object> p1 (db->load<object> (1));

          assert (p0->num == 123);
          assert (p1->num == 234);

          t.commit ();
        }

        try
        {
          object o2 (2);
          o2.num = 234;

          transaction t (db->begin ());
          db->persist (o2);
          assert (false);
        }
        catch (const odb::exception& ) {}

        break;
      }
    default:
      {
        cerr << "unknown pass number '" << argv[argc - 1] << "'" << endl;
        return 1;
      }
    }
  }
  catch (const odb::exception& e)
  {
    cerr << e.what () << endl;
    return 1;
  }
}