1
2 /*
3 Copyright (c) 2011, 2021, Oracle and/or its affiliates. All rights
4 reserved.
5
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License, version 2.0,
8 as published by the Free Software Foundation.
9
10 This program is also distributed with certain software (including
11 but not limited to OpenSSL) that is licensed under separate terms,
12 as designated in a particular file or component or in included license
13 documentation. The authors of MySQL hereby grant you an additional
14 permission to link the program and your derivative works with the
15 separately licensed software that they have included with MySQL.
16
17 This program is distributed in the hope that it will be useful,
18 but WITHOUT ANY WARRANTY; without even the implied warranty of
19 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 GNU General Public License, version 2.0, for more details.
21
22 You should have received a copy of the GNU General Public License
23 along with this program; if not, write to the Free Software
24 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
25 02110-1301 USA
26 */
27
28 #include <my_config.h>
29
30 #include "Operation.h"
31 #include "TabSeparatedValues.h"
32
33
34 /*
35 Class Operation originated as a header-only class and formed a bridge
36 between the "high-level" application code in ndb_worker.cc and the
37 low-level details of using the NDB API.
38
39 This proved difficult to debug. On many platforms, gdb's support for
40 inlined functions from header-only classes is poor.
41
42 A few methods are always compiled here.
43 */
44
45
Operation(QueryPlan * p,int o,char * kbuf)46 Operation::Operation(QueryPlan *p, int o, char *kbuf) : key_buffer(kbuf),
47 plan(p),
48 op(o)
49 {
50 set_default_record();
51 }
52
Operation(workitem * i,Uint32 mask)53 Operation::Operation(workitem *i, Uint32 mask) : key_buffer(i->ndb_key_buffer),
54 plan(i->plan),
55 op(i->base.verb)
56 {
57 set_default_record();
58 if(mask) {
59 row_mask[0] = mask & 0x000000FF;
60 row_mask[1] = mask & 0x0000FF00;
61 row_mask[2] = mask & 0x00FF0000;
62 row_mask[3] = mask & 0xFF000000;
63 }
64 }
65
Operation(QueryPlan * p,char * buf)66 Operation::Operation(QueryPlan *p, char * buf) : buffer(buf),
67 plan(p),
68 op(OP_READ)
69 {
70 set_default_record();
71 }
72
73
set_default_record()74 void Operation::set_default_record() {
75 row_mask[3] = row_mask[2] = row_mask[1] = row_mask[0] = 0;
76 key_mask[3] = key_mask[2] = key_mask[1] = key_mask[0] = 0;
77 read_mask_ptr = 0;
78
79 if(op == OP_READ) record = plan->val_record;
80 else if(op == OP_FLUSH) record = plan->key_record; // scanning delete
81 else record = plan->row_record;
82 }
83
84
85 /* Methods for reading columns from the response */
86
87
getStringValueNoCopy(int idx,char ** dstptr,size_t * lenptr) const88 bool Operation::getStringValueNoCopy(int idx, char **dstptr,
89 size_t *lenptr) const {
90 if(record->isNull(idx, buffer)) {
91 *dstptr = 0;
92 *lenptr = 0;
93 return true;
94 }
95 return record->decodeNoCopy(idx, dstptr, lenptr, buffer);
96 }
97
98
copyValue(int idx,char * dest) const99 size_t Operation::copyValue(int idx, char *dest) const {
100 if(record->isNull(idx, buffer)) {
101 *dest = 0;
102 return 0;
103 }
104 return record->decodeCopy(idx, dest, buffer);
105 }
106
107
108 /* NdbTransaction method wrappers */
109
startTransaction(Ndb * db) const110 NdbTransaction * Operation::startTransaction(Ndb *db) const {
111 char hash_buffer[512];
112 return db->startTransaction(plan->key_record->ndb_record, key_buffer,
113 hash_buffer, 512);
114 }
115
scanIndex(NdbTransaction * tx,NdbIndexScanOperation::IndexBound * bound)116 NdbIndexScanOperation * Operation::scanIndex(NdbTransaction *tx,
117 NdbIndexScanOperation::IndexBound *bound) {
118 /* MUST BE ORDERED ASC; used by configuration to read key_prefixes */
119 NdbScanOperation::ScanOptions opts;
120 opts.optionsPresent = NdbScanOperation::ScanOptions::SO_SCANFLAGS;
121 opts.scan_flags = NdbScanOperation::SF_OrderBy;
122
123 return tx->scanIndex(plan->key_record->ndb_record, // scan key
124 plan->row_record->ndb_record, // row record
125 NdbOperation::LM_Read, // lock mode
126 (const unsigned char*) 0, // result mask
127 bound, // bound
128 & opts,
129 sizeof(opts));
130 }
131
132
setKey(int nparts,const char * dbkey,size_t key_len)133 bool Operation::setKey(int nparts, const char *dbkey, size_t key_len ) {
134 bool r = true;
135
136 clearKeyNullBits();
137 if(nparts > 1) {
138 TabSeparatedValues tsv(dbkey, nparts, key_len);
139 int idx = 0;
140 do {
141 if(tsv.getLength()) {
142 DEBUG_PRINT("Set key part %d [%.*s]", idx, tsv.getLength(), tsv.getPointer());
143 if(! setKeyPart(COL_STORE_KEY+idx, tsv.getPointer(), tsv.getLength()))
144 return false;
145 }
146 else {
147 DEBUG_PRINT("Set key part NULL: %d ", idx);
148 setKeyPartNull(COL_STORE_KEY+idx);
149 }
150 idx++;
151 } while (tsv.advance());
152 }
153 else {
154 r = setKeyPart(COL_STORE_KEY, dbkey, key_len);
155 }
156 return r;
157 }
158
159
setFieldsInRow(int offset,const char * desc,int nparts,const char * val,size_t len)160 bool Operation::setFieldsInRow(int offset, const char * desc,
161 int nparts, const char *val, size_t len ) {
162 bool r = true;
163
164 if(nparts > 1) {
165 TabSeparatedValues tsv(val, nparts, len);
166 int idx = 0;
167 do {
168 if(tsv.getLength()) {
169 DEBUG_PRINT("Set %s part %d [%.*s]", desc, idx, tsv.getLength(), tsv.getPointer());
170 if(! setColumn(offset+idx, tsv.getPointer(), tsv.getLength()))
171 return false;
172 }
173 else {
174 DEBUG_PRINT("Set %s part NULL: %d ", desc, idx);
175 setColumnNull(offset+idx);
176 }
177 idx++;
178 } while (tsv.advance());
179 }
180 else {
181 r = setColumn(offset, val, len);
182 }
183 return r;
184 }
185
186
187