This repository was archived by the owner on Sep 6, 2021. It is now read-only.
forked from livecode/livecode
-
Notifications
You must be signed in to change notification settings - Fork 0
Expand file tree
/
Copy pathoracle_connection.cpp
More file actions
388 lines (304 loc) · 9.09 KB
/
Copy pathoracle_connection.cpp
File metadata and controls
388 lines (304 loc) · 9.09 KB
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
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
/* Copyright (C) 2003-2013 Runtime Revolution Ltd.
This file is part of LiveCode.
LiveCode is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License v3 as published by the Free
Software Foundation.
LiveCode 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 LiveCode. If not see <http://www.gnu.org/licenses/>. */
#include "dboracle.h"
#define LONGVARCHAR 94
#define LONGVARRAW 95
char DBConnection_ORACLE::errmsg[512];
/*DBCONNECTION_ORACLE - CONNECTION OBJECT FOR ORACLE DATABASES CHILD OF DBCONNECTION*/
Bool DBConnection_ORACLE::connect(char **args, int numargs)
{
if (isConnected)
return True;
// MW-2014-01-30: [[ Sqlite382 ]] Relaxed revdb_connect() so it only checks for at least
// one argument - we need at least 4 though.
if (numargs < 4)
return False;
char *t_user;
t_user = args[2];
char *t_password;
t_password = args[3];
char *t_database;
t_database = args[1];
char *t_host;
t_host = args[0];
if (t_user[0] == '\0')
t_user = NULL;
if (t_password[0] == '\0')
t_password = NULL;
memset(hda,0,HDA_SIZE);
sword t_error;
t_error = olog(&lda, hda, (ub1 *)t_user, -1, (ub1 *)t_password, -1, (ub1 *)t_host, -1, OCI_LM_DEF);
if (t_error != 0)
{
// OK-2010-02-24: Oracle connection should return an error message if it failed.
// The 600 char buffer size was taken from example code on Oracle's site.
char *t_error_message;
t_error_message = (char *)malloc(600);
oerhms(&lda, lda .rc, (OraText *)t_error_message, 600);
m_error = t_error_message;
return False;
}
connectionType = CT_ORACLE,
isConnected = True;
return True;
}
/*Method to disconnect from ORACLE server*/
void DBConnection_ORACLE::disconnect()
{
if (!isConnected)
return;
closeCursors();
ologof(&lda);
isConnected = False;
}
const char *DBConnection_ORACLE::getconnectionstring()
{
return DB_ORACLE_STRING;
}
bool queryCallback(void *p_context, int p_placeholder, DBBuffer &p_output)
{
p_output . append(":", 1);
p_output . ensure(1);
p_output . ensure(12);
sprintf(p_output . getFrontier(), "%d", p_placeholder);
p_output . advance(strlen(p_output . getFrontier()));
PlaceholderMap *t_placeholder_map;
t_placeholder_map = (PlaceholderMap *)p_context;
t_placeholder_map -> elements[t_placeholder_map -> length] = p_placeholder;
t_placeholder_map -> length ++;
return true;
}
Cda_Def *DBConnection_ORACLE::ExecuteQuery(char *p_query, DBString *p_arguments, int p_argument_count)
{
int t_affected_rows;
t_affected_rows = 0;
unsigned int t_query_length;
t_query_length = strlen(p_query);
Cda_Def *t_cursor;
t_cursor = new Cda_Def;
bool t_success;
t_success = true;
sword t_error;
if (t_success)
{
t_error = oopen(t_cursor, getLDA(), (text *)0, -1, -1, NULL, -1);
if (t_error != 0)
t_success = false;
}
char *t_parsed_query;
t_parsed_query = p_query;
PlaceholderMap t_placeholder_map;
if (p_argument_count != 0)
{
t_placeholder_map . length = 0;
t_placeholder_map . elements = new int[p_argument_count + 1];
DBBuffer t_query_buffer(t_query_length + 1);
t_success = processQuery(p_query, t_query_buffer, queryCallback, &t_placeholder_map);
t_query_length = t_query_buffer . getSize();
t_parsed_query = t_query_buffer . grab();
}
if (t_success)
{
if (oparse(t_cursor, (text *)t_parsed_query, t_query_length, DEFER_PARSE, PARSE_V7_LNG) != 0)
t_success = false;
}
if (t_success)
{
if (!BindVariables(t_cursor, p_arguments, p_argument_count, &t_placeholder_map))
t_success = false;
}
if (t_success)
{
t_error = oexec(t_cursor);
if (t_error != 0)
t_success = false;
}
if (!t_success)
{
delete t_cursor;
t_cursor = NULL;
}
return t_cursor;
}
/*Method to execute quick and fast sql statements like UPDATE and INSERT
Inputs:
query- string containing sql query
qlength - length of query (for binary data). if 0 then assume null terminated.
affectedrows - will recieve number of rows updated or inserted
Output: False on error
*/
Bool DBConnection_ORACLE::sqlExecute(char *p_query, DBString *p_arguments, int p_argument_count, unsigned int &p_affected_rows)
{
if (!isConnected)
return False;
Cda_Def *t_cursor;
t_cursor = ExecuteQuery(p_query, p_arguments, p_argument_count);
if (t_cursor == NULL)
{
// OK-2007-09-10 : Bug 5360
char t_error_message[512];
oerhms((cda_def *)getLDA(), lda.rc, (text *)t_error_message, (sword) sizeof(t_error_message));
errorMessageSet(t_error_message);
return False;
}
int t_affected_rows;
t_affected_rows = (int)t_cursor -> rpc;
p_affected_rows = t_affected_rows;
oclose(t_cursor);
errorMessageSet(NULL);
return True;
}
/*Method to execute sql statements like SELECT and return Cursor
Inputs:
query- string containing sql query
qlength - length of query (for binary data). if 0 then assume null terminated.
Output: NULL cursor on error
*/
DBCursor *DBConnection_ORACLE::sqlQuery(char *p_query, DBString *p_arguments, int p_argument_count, int p_rows)
{
if (!isConnected)
return NULL;
Cda_Def *t_cursor;
t_cursor = ExecuteQuery(p_query, p_arguments, p_argument_count);
if (t_cursor == NULL)
return NULL;
DBCursor_ORACLE *t_rev_cursor;
t_rev_cursor = new DBCursor_ORACLE();
if (!t_rev_cursor -> open((DBConnection *)this, t_cursor, p_rows))
{
// OK-2007-09-10 : Bug 5360
delete t_rev_cursor;
t_rev_cursor = NULL;
char t_error_message[512];
oerhms((cda_def *)getLDA(), lda.rc, (text *)t_error_message, (sword) sizeof(t_error_message));
errorMessageSet(t_error_message);
}
else
{
// OK-2007-09-10 : Bug 5360
errorMessageSet(NULL);
addCursor(t_rev_cursor);
}
lda . rc = t_cursor -> rc;
return (DBCursor *)t_rev_cursor;
}
/*IsError-True on error*/
Bool DBConnection_ORACLE::IsError()
{
if (lda.rc != 0)
return True;
return False;
}
/*getErrorMessage- return error string*/
char *DBConnection_ORACLE::getErrorMessage(Bool p_last)
{
// AL-2013-11-08 [[ Bug 11149 ]] Make sure most recent error string is available to revDatabaseConnectResult
if (p_last || IsError())
{
// OK-2007-09-10 : Bug 5360
if (m_error != NULL)
return m_error;
}
return (char *)DBNullValue;
}
/*BindVariables-parses querystring and binds variables*/
Bool DBConnection_ORACLE::BindVariables(Cda_Def *p_cursor, DBString *p_arguments, int p_argument_count, PlaceholderMap *p_placeholder_map)
{
if (p_argument_count == 0)
return True;
int t_param_count;
t_param_count = p_placeholder_map -> length;
if (t_param_count <= 0)
return True;
for (int i = 0; i < t_param_count; i++)
{
int t_placeholder_number;
t_placeholder_number = i + 1;
int t_parameter_number;
t_parameter_number = p_placeholder_map -> elements[i] - 1;
DBString t_parameter_value;
t_parameter_value = p_arguments[t_parameter_number];
sword t_datatype;
if (t_parameter_value . isbinary)
t_datatype = LRAW_TYPE;
else
t_datatype = VARCHAR2_TYPE;
sword t_datalength;
t_datalength = t_parameter_value . length;
if (obndrn(p_cursor, t_placeholder_number, (ub1 *)t_parameter_value . sptr, t_datalength, t_datatype, -1, 0, 0, -1, -1) != 0)
return False;
}
return True;
}
void DBConnection_ORACLE::getTables(char *p_buffer, int *p_buffer_size)
{
int t_rowdelimiter_length;
t_rowdelimiter_length = 1;
char t_rowdelimiter[1];
*t_rowdelimiter = '\n';
char t_query[] = "select tname from tab";
DBCursor *t_cursor;
t_cursor = sqlQuery(t_query, NULL, 0, 0);
if (t_cursor == NULL)
return;
char *t_result;
t_result = p_buffer;
char *t_result_ptr;
t_result_ptr = t_result;
if (p_buffer == NULL)
{
unsigned int t_total_size;
t_total_size = 0;
while (1)
{
unsigned int t_column_size;
t_column_size = 0;
char *t_column_data;
t_column_data = t_cursor -> getFieldDataBinary(1, t_column_size);
t_column_size = strlen(t_column_data);
t_total_size += t_column_size + t_rowdelimiter_length;
t_cursor -> next();
if (t_cursor -> getEOF())
break;
}
t_cursor -> getConnection() -> deleteCursor(t_cursor -> GetID());
*p_buffer_size = t_total_size;
return;
}
else
{
while (1)
{
unsigned int t_column_size;
t_column_size = 0;
char *t_column_data;
t_column_data = t_cursor -> getFieldDataBinary(1, t_column_size);
t_column_size = strlen(t_column_data);
if (((t_result_ptr - t_result) + (int)t_column_size + t_rowdelimiter_length + 1) >= *p_buffer_size)
break;
memcpy(t_result_ptr, t_column_data, t_column_size);
t_result_ptr += t_column_size;
t_cursor -> next();
if (t_cursor -> getEOF())
break;
memcpy(t_result_ptr, t_rowdelimiter, t_rowdelimiter_length);
t_result_ptr += t_rowdelimiter_length;
}
*t_result_ptr = '\0';
}
t_cursor -> getConnection() -> deleteCursor(t_cursor -> GetID());
t_cursor = NULL;
}
/*ORACLE doesn't support transactions so leave blank for now*/
void DBConnection_ORACLE::transBegin() {}
void DBConnection_ORACLE::transCommit(){ocom(getLDA());}
void DBConnection_ORACLE::transRollback(){orol(getLDA());}