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/*
* Copyright (C) 2005-2016 Christoph Rupp (chris@crupp.de).
* All Rights Reserved.
*
* 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, either version 3 of the License, or
* (at your option) any later version.
*
* 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.
*
* See the file COPYING for License information.
*/
/**
* A simple example which connects to a upscaledb server (see server1.c),
* creates a database, inserts some values, looks them up and erases them.
*/
#include <stdio.h>
#include <string.h>
#include <stdlib.h> /* for exit() */
#include <ups/upscaledb.h>
#define LOOP 1000
void
error(const char *foo, ups_status_t st) {
printf("%s() returned error %d: %s\n", foo, st, ups_strerror(st));
exit(-1);
}
int
main(int argc, char **argv) {
int i;
ups_status_t st; /* status variable */
ups_env_t *env; /* upscaledb Environment object */
ups_db_t *db; /* upscaledb Database object */
ups_key_t key = {0}; /* the structure for a key */
ups_record_t record = {0}; /* the structure for a record */
/*
* Connect to the server which should listen at 8080. The server is
* implemented in server1.c.
*/
st = ups_env_create(&env, "ups://localhost:8080/env1.db", 0, 0, 0);
if (st != UPS_SUCCESS)
error("ups_env_create", st);
/* now open a Database in this Environment */
st = ups_env_open_db(env, &db, 13, 0, 0);
if (st != UPS_SUCCESS)
error("ups_env_open_db", st);
/* now we can insert, delete or lookup values in the database */
for (i = 0; i < LOOP; i++) {
key.data = &i;
key.size = sizeof(i);
record.size = key.size;
record.data = key.data;
st = ups_db_insert(db, 0, &key, &record, 0);
if (st != UPS_SUCCESS)
error("ups_db_insert", st);
}
/* now lookup all values */
for (i = 0; i < LOOP; i++) {
key.data = &i;
key.size = sizeof(i);
st = ups_db_find(db, 0, &key, &record, 0);
if (st != UPS_SUCCESS)
error("ups_db_find", st);
/* check if the value is ok */
if (*(int *)record.data != i) {
printf("ups_db_find() ok, but returned bad value\n");
return (-1);
}
}
/* erase everything */
for (i = 0; i < LOOP; i++) {
key.data = &i;
key.size = sizeof(i);
st = ups_db_erase(db, 0, &key, 0);
if (st != UPS_SUCCESS)
error("ups_db_erase", st);
}
/* and make sure that the database is empty */
for (i = 0; i < LOOP; i++) {
key.data = &i;
key.size = sizeof(i);
st = ups_db_find(db, 0, &key, &record, 0);
if (st != UPS_KEY_NOT_FOUND)
error("ups_db_find", st);
}
/* close the database handle */
st = ups_db_close(db, 0);
if (st != UPS_SUCCESS)
error("ups_db_close", st);
/* close the environment handle */
st = ups_env_close(env, 0);
if (st != UPS_SUCCESS)
error("ups_env_close", st);
printf("success!\n");
return (0);
}