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
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
|
/* Copyright (C) 2004, 2005 MySQL AB
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; version 2 of the License.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
#include <ndb_global.h>
#include <NdbApi.hpp>
#include <NdbOut.hpp>
#include <NdbTick.h>
struct
S_Scan {
const char * m_table;
const char * m_index;
NdbIndexScanOperation * m_scan;
Uint32 metaid;
Uint32 match_count;
Uint32 row_count;
};
static S_Scan g_scans[] = {
{ "affiliatestometa", "ind_affiliatestometa", 0, 0, 0, 0 },
{ "media", "metaid", 0, 0, 0, 0 },
{ "meta", "PRIMARY", 0, 0, 0, 0 },
{ "artiststometamap", "PRIMARY", 0, 0, 0, 0 },
{ "subgenrestometamap", "metaid", 0, 0, 0, 0 }
};
#define require(x) if(!(x)) { ndbout << "LINE: " << __LINE__ << endl;abort(); }
#define require2(o, x) if(!(x)) { ndbout << o->getNdbError() << endl; abort(); }
Uint32 g_affiliateid = 2;
Uint32 g_formatids[] = { 8, 31, 76 };
Uint64 start;
Uint32 g_artistid = 0;
Uint32 g_subgenreid = 0;
NdbConnection* g_trans = 0;
static void lookup();
int
main(void){
ndb_init();
Ndb_cluster_connection con;
if(con.connect(12, 5, 1) != 0)
{
return 1;
}
Ndb g_ndb(&con, "test");
g_ndb.init(1024);
require(g_ndb.waitUntilReady() == 0);
while(true){
g_trans = g_ndb.startTransaction();
require(g_trans);
size_t i, j;
const size_t cnt = sizeof(g_scans)/sizeof(g_scans[0]);
start = NdbTick_CurrentMillisecond();
for(i = 0; i<cnt; i++){
ndbout_c("starting scan on: %s %s",
g_scans[i].m_table, g_scans[i].m_index);
g_scans[i].m_scan = g_trans->getNdbIndexScanOperation(g_scans[i].m_index,
g_scans[i].m_table);
NdbIndexScanOperation* scan = g_scans[i].m_scan;
require(scan);
require(scan->readTuples(NdbScanOperation::LM_CommittedRead,
0, 0, true) == 0);
}
require(!g_scans[0].m_scan->setBound((Uint32)0,
NdbIndexScanOperation::BoundEQ,
&g_affiliateid,
sizeof(g_affiliateid)));
#if 0
require(!g_scans[1].m_scan->setBound((Uint32)0,
NdbIndexScanOperation::BoundLE,
&g_formatids[0],
sizeof(g_formatids[0])));
#endif
NdbScanFilter sf(g_scans[1].m_scan);
sf.begin(NdbScanFilter::OR);
sf.eq(2, g_formatids[0]);
sf.eq(2, g_formatids[1]);
sf.eq(2, g_formatids[2]);
sf.end();
// affiliatestometa
require(g_scans[0].m_scan->getValue("uniquekey"));
require(g_scans[0].m_scan->getValue("xml"));
// media
require(g_scans[1].m_scan->getValue("path"));
require(g_scans[1].m_scan->getValue("mediaid"));
require(g_scans[1].m_scan->getValue("formatid"));
// meta
require(g_scans[2].m_scan->getValue("name"));
require(g_scans[2].m_scan->getValue("xml"));
// artiststometamap
require(g_scans[3].m_scan->getValue("artistid", (char*)&g_artistid));
// subgenrestometamap
require(g_scans[4].m_scan->getValue("subgenreid", (char*)&g_subgenreid));
for(i = 0; i<cnt; i++){
g_scans[i].m_scan->getValue("metaid", (char*)&g_scans[i].metaid);
}
g_trans->execute(NoCommit, AbortOnError, 1);
Uint32 max_val = 0;
Uint32 match_val = 0;
S_Scan * F [5], * Q [5], * nextF [5];
Uint32 F_sz = 0, Q_sz = 0;
for(i = 0; i<cnt; i++){
F_sz++;
F[i] = &g_scans[i];
}
Uint32 match_count = 0;
while(F_sz > 0){
Uint32 prev_F_sz = F_sz;
F_sz = 0;
bool found = false;
//for(i = 0; i<cnt; i++)
//ndbout_c("%s - %d", g_scans[i].m_table, g_scans[i].metaid);
for(i = 0; i<prev_F_sz; i++){
int res = F[i]->m_scan->nextResult();
if(res == -1)
abort();
if(res == 1){
continue;
}
Uint32 metaid = F[i]->metaid;
F[i]->row_count++;
if(metaid == match_val){
//ndbout_c("flera");
nextF[F_sz++] = F[i];
require(F_sz >= 0 && F_sz <= cnt);
F[i]->match_count++;
Uint32 comb = 1;
for(j = 0; j<cnt; j++){
comb *= (&g_scans[j] == F[i] ? 1 : g_scans[j].match_count);
}
match_count += comb;
found = true;
continue;
}
if(metaid < max_val){
nextF[F_sz++] = F[i];
require(F_sz >= 0 && F_sz <= cnt);
continue;
}
if(metaid > max_val){
for(j = 0; j<Q_sz; j++)
nextF[F_sz++] = Q[j];
require(F_sz >= 0 && F_sz <= cnt);
Q_sz = 0;
max_val = metaid;
}
Q[Q_sz++] = F[i];
require(Q_sz >= 0 && Q_sz <= cnt);
}
if(F_sz == 0 && Q_sz > 0){
match_val = max_val;
for(j = 0; j<Q_sz; j++){
nextF[F_sz++] = Q[j];
Q[j]->match_count = 1;
}
require(F_sz >= 0 && F_sz <= cnt);
require(Q_sz >= 0 && Q_sz <= cnt);
Q_sz = 0;
match_count++;
lookup();
} else if(!found && F_sz + Q_sz < cnt){
F_sz = 0;
}
require(F_sz >= 0 && F_sz <= cnt);
for(i = 0; i<F_sz; i++)
F[i] = nextF[i];
}
start = NdbTick_CurrentMillisecond() - start;
ndbout_c("Elapsed: %lldms", start);
ndbout_c("rows: %d", match_count);
for(i = 0; i<cnt; i++){
ndbout_c("%s : %d", g_scans[i].m_table, g_scans[i].row_count);
}
g_trans->close();
}
}
static
void
lookup(){
{
NdbOperation* op = g_trans->getNdbOperation("artists");
require2(g_trans, op);
require2(op, op->readTuple() == 0);
require2(op, op->equal("artistid", g_artistid) == 0);
require2(op, op->getValue("name"));
}
{
NdbOperation* op = g_trans->getNdbOperation("subgenres");
require2(g_trans, op);
require2(op, op->readTuple() == 0);
require2(op, op->equal("subgenreid", g_subgenreid) == 0);
require2(op, op->getValue("name"));
}
static int loop = 0;
if(loop++ >= 16){
loop = 0;
require(g_trans->execute(NoCommit) == 0);
}
//require(g_trans->restart() == 0);
}
|