minor refactoring in config

implement pagination

src/database.cpp

@@ -195,6 +195,30 @@ namespace Database {
         return result;
     }
 
+    /*
+     * Executes the SELECT_FREELANCERS_WITHCOMMISSIONSSTATE statement
+     * Takes an open pqxx::connection
+     */
+    pqxx::result executeStatement_SELECT_FREELANCERS_COUNT(pqxx::connection &connection) {
+        pqxx::work work(connection);
+        pqxx::result result = work.exec(SQL_Statement_SELECT_FREELANCERS_COUNT);
+        work.commit();
+        return result;
+    }
+
+    /*
+     * Executes the SELECT_FREELANCERS_WITHCOMMISSIONSSTATE_LIMITED_AND_OFFSET statement
+     * Takes an open pqxx::connection the limit and the offset
+     */
+    pqxx::result executePreparedStatement_SELECT_FREELANCERS_WITHCOMMISSIONSSTATE_LIMITED_AND_OFFSET(pqxx::connection &connection, int limit, int offset) {
+        if (offset < 0)
+            offset = 0;
+        pqxx::work work(connection);
+        pqxx::result result = work.exec_prepared(PREPARED_STATEMENT_SELECT_FREELANCERS_WITHCOMMISSIONSSTATE_LIMITED_AND_OFFSET, limit, offset);
+        work.commit();
+        return result;
+    }
+
     /*
      * Executes the PURGE_EXPIRED_FREELANCER_RESET_KEYS statement
      * Takes an open pqxx::connection