4 EXEC SQL INCLUDE SQLCA;
5 EXEC SQL INCLUDE SQLDA;
14 * ---Implementations---
18 return (sqlca.sqlcode < 0) ? sqlca.sqlcode : 0;
21 short INGgetCols(const char *stmt)
23 EXEC SQL BEGIN DECLARE SECTION;
25 EXEC SQL END DECLARE SECTION;
30 sqlda = (IISQLDA *)malloc(IISQDA_HEAD_SIZE + (number * IISQDA_VAR_SIZE));
31 memset(sqlda, 0, (IISQDA_HEAD_SIZE + (number * IISQDA_VAR_SIZE)));
35 stmtd = (char*)malloc(strlen(stmt)+1);
36 strncpy(stmtd,stmt,strlen(stmt)+1);
38 EXEC SQL PREPARE s1 from :stmtd;
44 EXEC SQL DESCRIBE s1 into :sqlda;
52 free(stmtd); free(sqlda);
56 IISQLDA *INGgetDescriptor(short numCols, const char *stmt)
58 EXEC SQL BEGIN DECLARE SECTION;
60 EXEC SQL END DECLARE SECTION;
65 sqlda = (IISQLDA *)malloc(IISQDA_HEAD_SIZE + (numCols * IISQDA_VAR_SIZE));
66 memset(sqlda, 0, (IISQDA_HEAD_SIZE + (numCols * IISQDA_VAR_SIZE)));
68 sqlda->sqln = numCols;
70 stmtd = (char *)malloc(strlen(stmt)+1);
71 strncpy(stmtd,stmt,strlen(stmt)+1);
73 EXEC SQL PREPARE s2 INTO :sqlda FROM :stmtd;
77 for (i = 0; i < sqlda->sqld; ++i) {
79 * Alloc space for variable like indicated in sqllen
80 * for date types sqllen is always 0 -> allocate by type
82 switch (abs(sqlda->sqlvar[i].sqltype)) {
84 sqlda->sqlvar[i].sqldata = (char *)malloc(IISQ_TSW_LEN);
87 sqlda->sqlvar[i].sqldata = (char *)malloc(IISQ_TSWO_LEN);
90 sqlda->sqlvar[i].sqldata = (char *)malloc(IISQ_TSTMP_LEN);
93 sqlda->sqlvar[i].sqldata = (char *)malloc(sqlda->sqlvar[i].sqllen);
101 void INGfreeDescriptor(IISQLDA *sqlda)
105 for (i = 0; i < sqlda->sqld; ++i) {
106 free(sqlda->sqlvar[i].sqldata);
107 free(sqlda->sqlvar[i].sqlind);
113 int INGgetTypeSize(IISQLVAR *ingvar)
118 * TODO: add date types (at least TSTMP,TSW TSWO)
120 switch (ingvar->sqltype) {
128 inglength = ingvar->sqllen;
135 INGresult *INGgetINGresult(IISQLDA *sqlda)
138 INGresult *result = NULL;
140 result = (INGresult *)malloc(sizeof(INGresult));
141 memset(result, 0, sizeof(INGresult));
143 result->sqlda = sqlda;
144 result->num_fields = sqlda->sqld;
145 result->num_rows = 0;
146 result->first_row = NULL;
147 result->status = ING_EMPTY_RESULT;
148 result->act_row = NULL;
149 memset(result->numrowstring, 0, sizeof(result->numrowstring));
151 if (result->num_fields) {
152 result->fields = (INGRES_FIELD *)malloc(sizeof(INGRES_FIELD) * result->num_fields);
153 memset(result->fields, 0, sizeof(INGRES_FIELD) * result->num_fields);
155 for (i = 0; i < result->num_fields; ++i) {
156 memset(result->fields[i].name, 0, 34);
157 strncpy(result->fields[i].name, sqlda->sqlvar[i].sqlname.sqlnamec, sqlda->sqlvar[i].sqlname.sqlnamel);
158 result->fields[i].max_length = INGgetTypeSize(&sqlda->sqlvar[i]);
159 result->fields[i].type = abs(sqlda->sqlvar[i].sqltype);
160 result->fields[i].flags = (abs(sqlda->sqlvar[i].sqltype)<0) ? 1 : 0;
167 void INGfreeINGresult(INGresult *ing_res)
173 * Free all rows and fields, then res, not descriptor!
175 if (ing_res != NULL) {
177 * Use of rows is a nasty workaround til I find the reason,
178 * why aggregates like max() don't work
180 rows = ing_res->num_rows;
181 ing_res->act_row = ing_res->first_row;
182 while (ing_res->act_row != NULL && rows > 0) {
183 rowtemp = ing_res->act_row->next;
184 INGfreeRowSpace(ing_res->act_row, ing_res->sqlda);
185 ing_res->act_row = rowtemp;
188 if (ing_res->fields) {
189 free(ing_res->fields);
196 ING_ROW *INGgetRowSpace(INGresult *ing_res)
199 unsigned short len; /* used for VARCHAR type length */
200 IISQLDA *sqlda = ing_res->sqlda;
202 IISQLVAR *vars = NULL;
204 row = (ING_ROW *)malloc(sizeof(ING_ROW));
205 memset(row, 0, sizeof(ING_ROW));
207 vars = (IISQLVAR *)malloc(sizeof(IISQLVAR) * sqlda->sqld);
208 memset(vars, 0, sizeof(IISQLVAR) * sqlda->sqld);
213 for (i = 0; i < sqlda->sqld; ++i) {
215 * Make strings out of the data, then the space and assign
216 * (why string? at least it seems that way, looking into the sources)
218 switch (ing_res->fields[i].type) {
220 len = ((ING_VARCHAR *)sqlda->sqlvar[i].sqldata)->len;
221 vars[i].sqldata = (char *)malloc(len+1);
222 memcpy(vars[i].sqldata,sqlda->sqlvar[i].sqldata+2,len);
223 vars[i].sqldata[len] = '\0';
226 vars[i].sqldata = (char *)malloc(ing_res->fields[i].max_length+1);
227 memcpy(vars[i].sqldata,sqlda->sqlvar[i].sqldata,sqlda->sqlvar[i].sqllen);
228 vars[i].sqldata[ing_res->fields[i].max_length] = '\0';
231 vars[i].sqldata = (char *)malloc(20);
232 memset(vars[i].sqldata, 0, 20);
233 switch (sqlda->sqlvar[i].sqllen) {
235 bsnprintf(vars[i].sqldata, 20, "%d",*(short*)sqlda->sqlvar[i].sqldata);
238 bsnprintf(vars[i].sqldata, 20, "%ld",*(int*)sqlda->sqlvar[i].sqldata);
241 bsnprintf(vars[i].sqldata, 20, "%lld",*(long*)sqlda->sqlvar[i].sqldata);
245 case IISQ_TSTMP_TYPE:
246 vars[i].sqldata = (char *)malloc(IISQ_TSTMP_LEN+1);
247 vars[i].sqldata[IISQ_TSTMP_LEN] = '\0';
250 vars[i].sqldata = (char *)malloc(IISQ_TSWO_LEN+1);
251 vars[i].sqldata[IISQ_TSWO_LEN] = '\0';
254 vars[i].sqldata = (char *)malloc(IISQ_TSW_LEN+1);
255 vars[i].sqldata[IISQ_TSW_LEN] = '\0';
258 vars[i].sqlind = (short *)malloc(sizeof(short));
259 memcpy(vars[i].sqlind,sqlda->sqlvar[i].sqlind,sizeof(short));
266 void INGfreeRowSpace(ING_ROW *row, IISQLDA *sqlda)
270 if (row == NULL || sqlda == NULL) {
274 for (i = 0; i < sqlda->sqld; ++i) {
275 free(row->sqlvar[i].sqldata);
276 free(row->sqlvar[i].sqlind);
282 int INGfetchAll(const char *stmt, INGresult *ing_res)
289 desc = ing_res->sqlda;
291 EXEC SQL DECLARE c2 CURSOR FOR s2;
292 if ((check = INGcheck()) < 0) {
297 if ((check = INGcheck()) < 0) {
301 /* for (linecount = 0; sqlca.sqlcode == 0; ++linecount) */
302 while(sqlca.sqlcode == 0) {
303 EXEC SQL FETCH c2 USING DESCRIPTOR :desc;
304 if ((check = INGcheck()) < 0) { return check;}
306 if (sqlca.sqlcode == 0)
308 row = INGgetRowSpace(ing_res); /* alloc space for fetched row */
311 * Initialize list when encountered first time
313 if (ing_res->first_row == 0) {
314 ing_res->first_row = row; /* head of the list */
315 ing_res->first_row->next = NULL;
316 ing_res->act_row = ing_res->first_row;
318 ing_res->act_row->next = row; /* append row to old act_row */
319 ing_res->act_row = row; /* set row as act_row */
320 row->row_number = linecount;
327 ing_res->status = ING_COMMAND_OK;
328 ing_res->num_rows = linecount;
332 ING_STATUS INGresultStatus(INGresult *res)
334 if (res == NULL) {return ING_NO_RESULT;}
338 void INGrowSeek(INGresult *res, int row_number)
341 if (res->act_row->row_number == row_number) {
346 * TODO: real error handling
348 if (row_number<0 || row_number>res->num_rows) {
352 for (trow = res->first_row; trow->row_number != row_number; trow = trow->next) ;
355 * Note - can be null - if row_number not found, right?
359 char *INGgetvalue(INGresult *res, int row_number, int column_number)
361 if (row_number != res->act_row->row_number) {
362 INGrowSeek(res, row_number);
364 return res->act_row->sqlvar[column_number].sqldata;
367 int INGgetisnull(INGresult *res, int row_number, int column_number)
369 if (row_number != res->act_row->row_number) {
370 INGrowSeek(res, row_number);
372 return (short)*res->act_row->sqlvar[column_number].sqlind;
375 int INGntuples(const INGresult *res)
377 return res->num_rows;
380 int INGnfields(const INGresult *res)
382 return res->num_fields;
385 char *INGfname(const INGresult *res, int column_number)
387 if ((column_number > res->num_fields) || (column_number < 0)) {
390 return res->fields[column_number].name;
394 short INGftype(const INGresult *res, int column_number)
396 return res->fields[column_number].type;
399 int INGexec(INGconn *conn, const char *query)
402 EXEC SQL BEGIN DECLARE SECTION;
405 EXEC SQL END DECLARE SECTION;
407 stmt = (char *)malloc(strlen(query)+1);
408 strncpy(stmt,query,strlen(query)+1);
411 EXEC SQL EXECUTE IMMEDIATE :stmt;
413 if ((check = INGcheck()) < 0) {
417 EXEC SQL INQUIRE_INGRES(:rowcount = ROWCOUNT);
418 if ((check = INGcheck()) < 0) {
425 INGresult *INGquery(INGconn *conn, const char *query)
428 * TODO: error handling
430 IISQLDA *desc = NULL;
431 INGresult *res = NULL;
433 int cols = INGgetCols(query);
435 desc = INGgetDescriptor(cols, query);
436 res = INGgetINGresult(desc);
437 rows = INGfetchAll(query, res);
440 INGfreeINGresult(res);
446 void INGclear(INGresult *res)
451 IISQLDA *desc = res->sqlda;
452 INGfreeINGresult(res);
453 INGfreeDescriptor(desc);
456 INGconn *INGconnectDB(char *dbname, char *user, char *passwd)
458 if (dbname == NULL || strlen(dbname) == 0) {
462 INGconn *dbconn = (INGconn *)malloc(sizeof(INGconn));
463 memset(dbconn, 0, sizeof(INGconn));
465 EXEC SQL BEGIN DECLARE SECTION;
471 EXEC SQL END DECLARE SECTION;
473 bstrncpy(ingdbname, dbname, sizeof(ingdbname));
476 bstrncpy(ingdbuser, user, sizeof(ingdbuser));
477 if (passwd != NULL) {
478 bstrncpy(ingdbpasw, passwd, sizeof(ingdbpasw));
480 memset(ingdbpasw, 0, sizeof(ingdbpasw));
484 identified by :ingdbuser
485 dbms_password = :ingdbpasw;
487 EXEC SQL CONNECT :ingdbname;
490 EXEC SQL INQUIRE_SQL(:conn_name = connection_name);
491 EXEC SQL INQUIRE_SQL(:sess_id = session);
493 strncpy(dbconn->dbname, ingdbname, sizeof(dbconn->dbname));
494 strncpy(dbconn->user, ingdbuser, sizeof(dbconn->user));
495 strncpy(dbconn->password, ingdbpasw, sizeof(dbconn->password));
496 strncpy(dbconn->connection_name, conn_name, sizeof(dbconn->connection_name));
497 dbconn->session_id = sess_id;
498 dbconn->msg = (char*)malloc(257);
499 memset(dbconn->msg, 0, 257);
504 void INGdisconnectDB(INGconn *dbconn)
507 * TODO: check for any real use of dbconn: maybe whenn multithreaded?
510 if (dbconn != NULL) {
516 char *INGerrorMessage(const INGconn *conn)
518 EXEC SQL BEGIN DECLARE SECTION;
520 EXEC SQL END DECLARE SECTION;
522 EXEC SQL INQUIRE_INGRES(:errbuf = ERRORTEXT);
523 memcpy(conn->msg,&errbuf,256);
527 char *INGcmdTuples(INGresult *res)
529 return res->numrowstring;
533 int INGputCopyEnd(INGconn *conn, const char *errormsg);
534 int INGputCopyData(INGconn *conn, const char *buffer, int nbytes);