add some random code playing with sqlite3 C api

diff --git a/testing/sqlite-approach/testapp/test.c b/testing/sqlite-approach/testapp/test.c
new file mode 100644 (file)
index 0000000..cd6e850
--- /dev/null
+++ b/testing/sqlite-approach/testapp/test.c
@@ -0,0 +1,52 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sqlite3.h>
+
+static void updateSensor(sqlite3* db, int id, int value);
+
+int main(int argc, char *argv[]) {
+       if (argc != 2) {
+               printf ("Usage: %s db_location\n", argv[0]);
+               return 1;
+       }
+
+       sqlite3* db;
+       int ret;
+
+       if (ret = sqlite3_open(argv[1], &db) != SQLITE_OK) {
+               printf("Error opening database: %s\n",
+                       sqlite3_errstr(ret));
+               return 1;
+       }
+
+       sqlite3_stmt *statement;
+       char *query = "insert into sensors values(3,4)";
+       if (ret = sqlite3_prepare(db, query, (int)strlen(query) + 1, &statement, NULL) != SQLITE_OK) {
+               printf("Error in query: %s\n",
+                       sqlite3_errstr(ret));
+       }
+
+       sqlite3_step(statement);
+       sqlite3_finalize(statement);
+
+       updateSensor(db, 44, 2332);
+       sqlite3_close(db);
+       return 0;
+}
+
+static void updateSensor(sqlite3* db, int id, int value) {
+       char query[BUFSIZ];
+       snprintf(query, BUFSIZ, "update sensors set value=%d where id=%d", value, id);
+
+       //Needs error checking
+       int ret;
+       if (ret = sqlite3_exec(db, query, NULL, NULL, NULL) != SQLITE_OK) {
+               printf("Error: %s\n", sqlite3_errstr(ret));
+       }
+       if (!sqlite3_changes(db)) {
+               printf("Record doesn't exist; creating!\n");
+               snprintf(query, BUFSIZ, "insert into sensors values(%d, %d)", id, value);
+               sqlite3_exec(db, query, NULL, NULL, NULL);
+       }
+}