2 * collectd - src/utils_db_query.c
3 * Copyright (C) 2008,2009 Florian octo Forster
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License as published by the
7 * Free Software Foundation; only version 2 of the License is applicable.
9 * This program is distributed in the hope that it will be useful, but
10 * WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * General Public License for more details.
14 * You should have received a copy of the GNU General Public License along
15 * with this program; if not, write to the Free Software Foundation, Inc.,
16 * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
19 * Florian octo Forster <octo at verplant.org>
25 #include "configfile.h"
26 #include "utils_db_query.h"
31 struct udb_result_s; /* {{{ */
32 typedef struct udb_result_s udb_result_t;
36 char *instance_prefix;
42 /* Preparation area */
44 size_t *instances_pos;
46 char **instances_buffer;
51 size_t legacy_position;
52 /* When in legacy mode:
53 * - type/ds hold the format of the data
54 * - instance_prefix is used as type-instance if non-NULL
55 * - legacy_position holds the index of the column to use as value.
61 struct udb_query_s /* {{{ */
69 unsigned int min_version;
70 unsigned int max_version;
72 /* Preparation area */
78 udb_result_t *results;
82 * Config Private functions
84 static int udb_config_set_string (char **ret_string, /* {{{ */
89 if ((ci->values_num != 1)
90 || (ci->values[0].type != OCONFIG_TYPE_STRING))
92 WARNING ("db query utils: The `%s' config option "
93 "needs exactly one string argument.", ci->key);
97 string = strdup (ci->values[0].value.string);
100 ERROR ("db query utils: strdup failed.");
104 if (*ret_string != NULL)
106 *ret_string = string;
109 } /* }}} int udb_config_set_string */
111 static int udb_config_add_string (char ***ret_array, /* {{{ */
112 size_t *ret_array_len, oconfig_item_t *ci)
118 if (ci->values_num < 1)
120 WARNING ("db query utils: The `%s' config option "
121 "needs at least one argument.", ci->key);
125 for (i = 0; i < ci->values_num; i++)
127 if (ci->values[i].type != OCONFIG_TYPE_STRING)
129 WARNING ("db query utils: Argument %i to the `%s' option "
130 "is not a string.", i + 1, ci->key);
135 array_len = *ret_array_len;
136 array = (char **) realloc (*ret_array,
137 sizeof (char *) * (array_len + ci->values_num));
140 ERROR ("db query utils: realloc failed.");
145 for (i = 0; i < ci->values_num; i++)
147 array[array_len] = strdup (ci->values[i].value.string);
148 if (array[array_len] == NULL)
150 ERROR ("db query utils: strdup failed.");
151 *ret_array_len = array_len;
157 *ret_array_len = array_len;
159 } /* }}} int udb_config_add_string */
161 static int udb_config_set_uint (unsigned int *ret_value, /* {{{ */
166 if ((ci->values_num != 1)
167 || (ci->values[0].type != OCONFIG_TYPE_NUMBER))
169 WARNING ("db query utils: The `%s' config option "
170 "needs exactly one numeric argument.", ci->key);
174 tmp = ci->values[0].value.number;
175 if ((tmp < 0.0) || (tmp > ((double) UINT_MAX)))
178 *ret_value = (unsigned int) (tmp + .5);
180 } /* }}} int udb_config_set_uint */
183 * Legacy result private functions
185 static void udb_legacy_result_finish_result (udb_result_t *r) /* {{{ */
190 assert (r->legacy_mode == 1);
193 } /* }}} void udb_legacy_result_finish_result */
195 static int udb_legacy_result_handle_result (udb_result_t *r, /* {{{ */
196 udb_query_t *q, char **column_values)
198 value_list_t vl = VALUE_LIST_INIT;
202 assert (r->legacy_mode == 1);
203 assert (r->ds != NULL);
204 assert (r->ds->ds_num == 1);
209 value_str = column_values[r->legacy_position];
210 if (0 != parse_value (value_str, &vl.values[0], r->ds->ds[0]))
212 ERROR ("db query utils: udb_legacy_result_handle_result: "
213 "Parsing `%s' as %s failed.", value_str,
214 (r->ds->ds[0].type == DS_TYPE_COUNTER) ? "counter" : "gauge");
219 sstrncpy (vl.host, q->host, sizeof (vl.host));
220 sstrncpy (vl.plugin, q->plugin, sizeof (vl.plugin));
221 sstrncpy (vl.plugin_instance, q->db_name, sizeof (vl.type_instance));
222 sstrncpy (vl.type, r->type, sizeof (vl.type));
224 if (r->instance_prefix != NULL)
225 sstrncpy (vl.type_instance, r->instance_prefix,
226 sizeof (vl.type_instance));
228 plugin_dispatch_values (&vl);
231 } /* }}} int udb_legacy_result_handle_result */
233 static int udb_legacy_result_prepare_result (udb_result_t *r, /* {{{ */
234 char **column_names, size_t column_num)
239 assert (r->legacy_mode == 1);
241 /* Make sure previous preparations are cleaned up. */
242 udb_legacy_result_finish_result (r);
244 if (r->legacy_position >= column_num)
246 ERROR ("db query utils: The legacy configuration specified (at least) "
247 "%zu `Column's, but the query returned only %zu columns!",
248 r->legacy_position + 1, column_num);
252 /* Read `ds' and check number of values {{{ */
253 r->ds = plugin_get_ds (r->type);
256 ERROR ("db query utils: udb_result_prepare_result: Type `%s' is not "
257 "known by the daemon. See types.db(5) for details.",
262 if (r->ds->ds_num != 1)
264 ERROR ("db query utils: udb_result_prepare_result: The type `%s' "
265 "requires exactly %i values, but the legacy configuration "
266 "requires exactly one!",
274 } /* }}} int udb_legacy_result_prepare_result */
276 static int udb_legacy_result_create (const char *query_name, /* {{{ */
277 udb_result_t **r_head, oconfig_item_t *ci, size_t position)
281 if ((ci->values_num < 1) || (ci->values_num > 2)
282 || (ci->values[0].type != OCONFIG_TYPE_STRING)
283 || ((ci->values_num == 2)
284 && (ci->values[1].type != OCONFIG_TYPE_STRING)))
286 WARNING ("db query utils: The `Column' block needs either one or two "
287 "string arguments.");
291 r = (udb_result_t *) malloc (sizeof (*r));
294 ERROR ("db query utils: malloc failed.");
297 memset (r, 0, sizeof (*r));
300 r->legacy_position = position;
302 r->type = strdup (ci->values[0].value.string);
305 ERROR ("db query utils: strdup failed.");
310 r->instance_prefix = NULL;
311 if (ci->values_num == 2)
313 r->instance_prefix = strdup (ci->values[1].value.string);
314 if (r->instance_prefix == NULL)
316 ERROR ("db query utils: strdup failed.");
323 /* If all went well, add this result to the list of results. */
333 while (last->next != NULL)
340 } /* }}} int udb_legacy_result_create */
343 * Result private functions
345 static int udb_result_submit (udb_result_t *r, udb_query_t *q) /* {{{ */
347 value_list_t vl = VALUE_LIST_INIT;
351 assert (r->legacy_mode == 0);
352 assert (r->ds != NULL);
353 assert (((size_t) r->ds->ds_num) == r->values_num);
355 vl.values = (value_t *) calloc (r->ds->ds_num, sizeof (value_t));
356 if (vl.values == NULL)
358 ERROR ("db query utils: malloc failed.");
361 vl.values_len = r->ds->ds_num;
363 for (i = 0; i < r->values_num; i++)
365 char *value_str = r->values_buffer[i];
367 if (0 != parse_value (value_str, &vl.values[i], r->ds->ds[i]))
369 ERROR ("db query utils: udb_result_submit: Parsing `%s' as %s failed.",
371 (r->ds->ds[i].type == DS_TYPE_COUNTER) ? "counter" : "gauge");
377 sstrncpy (vl.host, q->host, sizeof (vl.host));
378 sstrncpy (vl.plugin, q->plugin, sizeof (vl.plugin));
379 sstrncpy (vl.plugin_instance, q->db_name, sizeof (vl.type_instance));
380 sstrncpy (vl.type, r->type, sizeof (vl.type));
382 /* Set vl.type_instance {{{ */
383 if (r->instances_num <= 0)
385 if (r->instance_prefix == NULL)
386 vl.type_instance[0] = 0;
388 sstrncpy (vl.type_instance, r->instance_prefix,
389 sizeof (vl.type_instance));
391 else /* if ((r->instances_num > 0) */
393 if (r->instance_prefix == NULL)
395 strjoin (vl.type_instance, sizeof (vl.type_instance),
396 r->instances_buffer, r->instances_num, "-");
400 char tmp[DATA_MAX_NAME_LEN];
402 strjoin (tmp, sizeof (tmp), r->instances_buffer, r->instances_num, "-");
403 tmp[sizeof (tmp) - 1] = 0;
405 snprintf (vl.type_instance, sizeof (vl.type_instance), "%s-%s",
406 r->instance_prefix, tmp);
409 vl.type_instance[sizeof (vl.type_instance) - 1] = 0;
412 plugin_dispatch_values (&vl);
416 } /* }}} void udb_result_submit */
418 static void udb_result_finish_result (udb_result_t *r) /* {{{ */
423 if (r->legacy_mode == 1)
425 udb_legacy_result_finish_result (r);
429 assert (r->legacy_mode == 0);
432 sfree (r->instances_pos);
433 sfree (r->values_pos);
434 sfree (r->instances_buffer);
435 sfree (r->values_buffer);
436 } /* }}} void udb_result_finish_result */
438 static int udb_result_handle_result (udb_result_t *r, /* {{{ */
439 udb_query_t *q, char **column_values)
443 if (r->legacy_mode == 1)
444 return (udb_legacy_result_handle_result (r, q, column_values));
446 assert (r->legacy_mode == 0);
448 for (i = 0; i < r->instances_num; i++)
449 r->instances_buffer[i] = column_values[r->instances_pos[i]];
451 for (i = 0; i < r->values_num; i++)
452 r->values_buffer[i] = column_values[r->values_pos[i]];
454 return udb_result_submit (r, q);
455 } /* }}} int udb_result_handle_result */
457 static int udb_result_prepare_result (udb_result_t *r, /* {{{ */
458 char **column_names, size_t column_num)
465 if (r->legacy_mode == 1)
466 return (udb_legacy_result_prepare_result (r, column_names, column_num));
468 assert (r->legacy_mode == 0);
470 #define BAIL_OUT(status) \
472 sfree (r->instances_pos); \
473 sfree (r->values_pos); \
474 sfree (r->instances_buffer); \
475 sfree (r->values_buffer); \
478 /* Make sure previous preparations are cleaned up. */
479 udb_result_finish_result (r);
480 r->instances_pos = NULL;
481 r->values_pos = NULL;
483 /* Read `ds' and check number of values {{{ */
484 r->ds = plugin_get_ds (r->type);
487 ERROR ("db query utils: udb_result_prepare_result: Type `%s' is not "
488 "known by the daemon. See types.db(5) for details.",
493 if (((size_t) r->ds->ds_num) != r->values_num)
495 ERROR ("db query utils: udb_result_prepare_result: The type `%s' "
496 "requires exactly %i value%s, but the configuration specifies %zu.",
498 r->ds->ds_num, (r->ds->ds_num == 1) ? "" : "s",
504 /* Allocate r->instances_pos, r->values_pos, r->instances_buffer, and
505 * r->values_buffer {{{ */
506 if (r->instances_num > 0)
508 r->instances_pos = (size_t *) calloc (r->instances_num, sizeof (size_t));
509 if (r->instances_pos == NULL)
511 ERROR ("db query utils: udb_result_prepare_result: malloc failed.");
515 r->instances_buffer = (char **) calloc (r->instances_num, sizeof (char *));
516 if (r->instances_buffer == NULL)
518 ERROR ("db query utils: udb_result_prepare_result: malloc failed.");
521 } /* if (r->instances_num > 0) */
523 r->values_pos = (size_t *) calloc (r->values_num, sizeof (size_t));
524 if (r->values_pos == NULL)
526 ERROR ("db query utils: udb_result_prepare_result: malloc failed.");
530 r->values_buffer = (char **) calloc (r->values_num, sizeof (char *));
531 if (r->values_buffer == NULL)
533 ERROR ("db query utils: udb_result_prepare_result: malloc failed.");
538 /* Determine the position of the instance columns {{{ */
539 for (i = 0; i < r->instances_num; i++)
543 for (j = 0; j < column_num; j++)
545 if (strcasecmp (r->instances[i], column_names[j]) == 0)
547 r->instances_pos[i] = j;
554 ERROR ("db query utils: udb_result_prepare_result: "
555 "Column `%s' could not be found.",
559 } /* }}} for (i = 0; i < r->instances_num; i++) */
561 /* Determine the position of the value columns {{{ */
562 for (i = 0; i < r->values_num; i++)
566 for (j = 0; j < column_num; j++)
568 if (strcasecmp (r->values[i], column_names[j]) == 0)
570 r->values_pos[i] = j;
577 ERROR ("db query utils: udb_result_prepare_result: "
578 "Column `%s' could not be found.",
582 } /* }}} for (i = 0; i < r->values_num; i++) */
586 } /* }}} int udb_result_prepare_result */
588 static void udb_result_free (udb_result_t *r) /* {{{ */
597 for (i = 0; i < r->instances_num; i++)
598 sfree (r->instances[i]);
599 sfree (r->instances);
601 for (i = 0; i < r->values_num; i++)
602 sfree (r->values[i]);
605 udb_result_free (r->next);
608 } /* }}} void udb_result_free */
610 static int udb_result_create (const char *query_name, /* {{{ */
611 udb_result_t **r_head, oconfig_item_t *ci)
617 if (ci->values_num != 0)
619 WARNING ("db query utils: The `Result' block doesn't accept "
620 "any arguments. Ignoring %i argument%s.",
621 ci->values_num, (ci->values_num == 1) ? "" : "s");
624 r = (udb_result_t *) malloc (sizeof (*r));
627 ERROR ("db query utils: malloc failed.");
630 memset (r, 0, sizeof (*r));
632 r->instance_prefix = NULL;
637 /* Fill the `udb_result_t' structure.. */
639 for (i = 0; i < ci->children_num; i++)
641 oconfig_item_t *child = ci->children + i;
643 if (strcasecmp ("Type", child->key) == 0)
644 status = udb_config_set_string (&r->type, child);
645 else if (strcasecmp ("InstancePrefix", child->key) == 0)
646 status = udb_config_set_string (&r->instance_prefix, child);
647 else if (strcasecmp ("InstancesFrom", child->key) == 0)
648 status = udb_config_add_string (&r->instances, &r->instances_num, child);
649 else if (strcasecmp ("ValuesFrom", child->key) == 0)
650 status = udb_config_add_string (&r->values, &r->values_num, child);
653 WARNING ("db query utils: Query `%s': Option `%s' not allowed here.",
654 query_name, child->key);
662 /* Check that all necessary options have been given. */
667 WARNING ("db query utils: `Type' not given for "
668 "result in query `%s'", query_name);
671 if (r->values == NULL)
673 WARNING ("db query utils: `ValuesFrom' not given for "
674 "result in query `%s'", query_name);
679 } /* while (status == 0) */
687 /* If all went well, add this result to the list of results. */
697 while (last->next != NULL)
704 } /* }}} int udb_result_create */
707 * Query private functions
709 void udb_query_free_one (udb_query_t *q) /* {{{ */
715 sfree (q->statement);
717 udb_result_free (q->results);
720 } /* }}} void udb_query_free_one */
723 * Query public functions
725 int udb_query_create (udb_query_t ***ret_query_list, /* {{{ */
726 size_t *ret_query_list_len, oconfig_item_t *ci,
727 udb_query_create_callback_t cb, int legacy_mode)
729 udb_query_t **query_list;
730 size_t query_list_len;
736 size_t legacy_position;
738 if ((ret_query_list == NULL) || (ret_query_list_len == NULL))
740 query_list = *ret_query_list;
741 query_list_len = *ret_query_list_len;
743 if ((ci->values_num != 1)
744 || (ci->values[0].type != OCONFIG_TYPE_STRING))
746 WARNING ("db query utils: The `Query' block "
747 "needs exactly one string argument.");
751 q = (udb_query_t *) malloc (sizeof (*q));
754 ERROR ("db query utils: malloc failed.");
757 memset (q, 0, sizeof (*q));
758 q->legacy_mode = legacy_mode;
760 q->max_version = UINT_MAX;
764 status = udb_config_set_string (&q->name, ci);
771 /* Fill the `udb_query_t' structure.. */
772 for (i = 0; i < ci->children_num; i++)
774 oconfig_item_t *child = ci->children + i;
776 if (strcasecmp ("Statement", child->key) == 0)
777 status = udb_config_set_string (&q->statement, child);
778 else if (strcasecmp ("Result", child->key) == 0)
779 status = udb_result_create (q->name, &q->results, child);
780 else if (strcasecmp ("MinVersion", child->key) == 0)
781 status = udb_config_set_uint (&q->min_version, child);
782 else if (strcasecmp ("MaxVersion", child->key) == 0)
783 status = udb_config_set_uint (&q->max_version, child);
785 /* PostgreSQL compatibility code */
786 else if ((strcasecmp ("Query", child->key) == 0)
787 && (q->legacy_mode == 1))
789 WARNING ("db query utils: Query `%s': The `Query' option is "
790 "deprecated. Please use `Statement' instead.",
792 status = udb_config_set_string (&q->statement, child);
794 else if ((strcasecmp ("Column", child->key) == 0)
795 && (q->legacy_mode == 1))
797 WARNING ("db query utils: Query `%s': The `Column' option is "
798 "deprecated. Please use the new syntax instead.",
800 status = udb_legacy_result_create (q->name, &q->results, child,
804 else if ((strcasecmp ("MinPGVersion", child->key) == 0)
805 && (q->legacy_mode == 1))
807 WARNING ("db query utils: Query `%s': The `MinPGVersion' option is "
808 "deprecated. Please use `MinVersion' instead.",
810 status = udb_config_set_uint (&q->min_version, child);
812 else if ((strcasecmp ("MaxPGVersion", child->key) == 0)
813 && (q->legacy_mode == 1))
815 WARNING ("db query utils: Query `%s': The `MaxPGVersion' option is "
816 "deprecated. Please use `MaxVersion' instead.",
818 status = udb_config_set_uint (&q->max_version, child);
821 /* Call custom callbacks */
824 status = (*cb) (q, child);
827 WARNING ("db query utils: The configuration callback failed "
828 "to handle `%s'.", child->key);
833 WARNING ("db query utils: Query `%s': Option `%s' not allowed here.",
834 q->name, child->key);
842 /* Check that all necessary options have been given. */
845 if (q->statement == NULL)
847 WARNING ("db query utils: Query `%s': No `Statement' given.", q->name);
850 if (q->results == NULL)
852 WARNING ("db query utils: Query `%s': No (valid) `Result' block given.",
856 } /* if (status == 0) */
858 /* If all went well, add this query to the list of queries within the
859 * database structure. */
864 temp = (udb_query_t **) realloc (query_list,
865 sizeof (*query_list) * (query_list_len + 1));
868 ERROR ("db query utils: realloc failed");
874 query_list[query_list_len] = q;
881 udb_query_free_one (q);
885 *ret_query_list = query_list;
886 *ret_query_list_len = query_list_len;
889 } /* }}} int udb_query_create */
891 void udb_query_free (udb_query_t **query_list, size_t query_list_len) /* {{{ */
895 if (query_list == NULL)
898 for (i = 0; i < query_list_len; i++)
899 udb_query_free_one (query_list[i]);
902 } /* }}} void udb_query_free */
904 int udb_query_pick_from_list_by_name (const char *name, /* {{{ */
905 udb_query_t **src_list, size_t src_list_len,
906 udb_query_t ***dst_list, size_t *dst_list_len)
911 if ((name == NULL) || (src_list == NULL) || (dst_list == NULL)
912 || (dst_list_len == NULL))
914 ERROR ("db query utils: udb_query_pick_from_list_by_name: "
915 "Invalid argument.");
920 for (i = 0; i < src_list_len; i++)
922 udb_query_t **tmp_list;
925 if (strcasecmp (name, src_list[i]->name) != 0)
928 tmp_list_len = *dst_list_len;
929 tmp_list = (udb_query_t **) realloc (*dst_list, (tmp_list_len + 1)
930 * sizeof (udb_query_t *));
931 if (tmp_list == NULL)
933 ERROR ("db query utils: realloc failed.");
937 tmp_list[tmp_list_len] = src_list[i];
940 *dst_list = tmp_list;
941 *dst_list_len = tmp_list_len;
944 } /* for (i = 0; i < src_list_len; i++) */
948 ERROR ("db query utils: Cannot find query `%s'. Make sure the <Query> "
949 "block is above the database definition!",
955 DEBUG ("db query utils: Added %i versions of query `%s'.",
960 } /* }}} int udb_query_pick_from_list_by_name */
962 int udb_query_pick_from_list (oconfig_item_t *ci, /* {{{ */
963 udb_query_t **src_list, size_t src_list_len,
964 udb_query_t ***dst_list, size_t *dst_list_len)
968 if ((ci == NULL) || (src_list == NULL) || (dst_list == NULL)
969 || (dst_list_len == NULL))
971 ERROR ("db query utils: udb_query_pick_from_list: "
972 "Invalid argument.");
976 if ((ci->values_num != 1)
977 || (ci->values[0].type != OCONFIG_TYPE_STRING))
979 ERROR ("db query utils: The `%s' config option "
980 "needs exactly one string argument.", ci->key);
983 name = ci->values[0].value.string;
985 return (udb_query_pick_from_list_by_name (name,
986 src_list, src_list_len,
987 dst_list, dst_list_len));
988 } /* }}} int udb_query_pick_from_list */
990 const char *udb_query_get_name (udb_query_t *q) /* {{{ */
996 } /* }}} const char *udb_query_get_name */
998 const char *udb_query_get_statement (udb_query_t *q) /* {{{ */
1003 return (q->statement);
1004 } /* }}} const char *udb_query_get_statement */
1006 void udb_query_set_user_data (udb_query_t *q, void *user_data) /* {{{ */
1011 q->user_data = user_data;
1012 } /* }}} void udb_query_set_user_data */
1014 void *udb_query_get_user_data (udb_query_t *q) /* {{{ */
1019 return (q->user_data);
1020 } /* }}} void *udb_query_get_user_data */
1022 int udb_query_check_version (udb_query_t *q, unsigned int version) /* {{{ */
1027 if ((version < q->min_version) || (version > q->max_version))
1031 } /* }}} int udb_query_check_version */
1033 void udb_query_finish_result (udb_query_t *q) /* {{{ */
1045 for (r = q->results; r != NULL; r = r->next)
1046 udb_result_finish_result (r);
1047 } /* }}} void udb_query_finish_result */
1049 int udb_query_handle_result (udb_query_t *q, char **column_values) /* {{{ */
1058 if ((q->column_num < 1) || (q->host == NULL) || (q->plugin == NULL)
1059 || (q->db_name == NULL))
1061 ERROR ("db query utils: Query `%s': Query is not prepared; "
1062 "can't handle result.", q->name);
1066 #if defined(COLLECT_DEBUG) && COLLECT_DEBUG /* {{{ */
1071 for (i = 0; i < q->column_num; i++)
1073 DEBUG ("db query utils: udb_query_handle_result (%s, %s): "
1074 "column[%zu] = %s;",
1075 q->db_name, q->name, i, column_values[i]);
1081 for (r = q->results; r != NULL; r = r->next)
1083 status = udb_result_handle_result (r, q, column_values);
1090 ERROR ("db query utils: udb_query_handle_result (%s, %s): "
1091 "All results failed.", q->db_name, q->name);
1096 } /* }}} int udb_query_handle_result */
1098 int udb_query_prepare_result (udb_query_t *q, /* {{{ */
1099 const char *host, const char *plugin, const char *db_name,
1100 char **column_names, size_t column_num)
1108 udb_query_finish_result (q);
1110 q->column_num = column_num;
1111 q->host = strdup (host);
1112 q->plugin = strdup (plugin);
1113 q->db_name = strdup (db_name);
1115 if ((q->host == NULL) || (q->plugin == NULL) || (q->db_name == NULL))
1117 ERROR ("db query utils: Query `%s': Prepare failed: Out of memory.", q->name);
1118 udb_query_finish_result (q);
1122 #if defined(COLLECT_DEBUG) && COLLECT_DEBUG
1127 for (i = 0; i < column_num; i++)
1129 DEBUG ("db query utils: udb_query_prepare_result: "
1130 "query = %s; column[%zu] = %s;",
1131 q->name, i, column_names[i]);
1136 for (r = q->results; r != NULL; r = r->next)
1138 status = udb_result_prepare_result (r, column_names, column_num);
1141 udb_query_finish_result (q);
1147 } /* }}} int udb_query_prepare_result */
1149 /* vim: set sw=2 sts=2 et fdm=marker : */