110 lines
3.3 KiB
C
110 lines
3.3 KiB
C
/*
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* Copyright (c) 2010, Swedish Institute of Computer Science
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the Institute nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/**
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* \file
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* A small command-line interface for the database system.
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* \author
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* Nicolas Tsiftes <nvt@sics.se>
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*/
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#include <stdio.h>
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#include "contiki.h"
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#include "dev/serial-line.h"
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#include "antelope.h"
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PROCESS(db_shell, "DB shell");
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AUTOSTART_PROCESSES(&db_shell);
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PROCESS_THREAD(db_shell, ev, data)
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{
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static db_handle_t handle;
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db_result_t result;
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static tuple_id_t matching;
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static tuple_id_t processed;
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PROCESS_BEGIN();
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db_init();
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for(;;) {
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PROCESS_WAIT_EVENT_UNTIL(ev == serial_line_event_message && data != NULL);
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result = db_query(&handle, data);
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if(DB_ERROR(result)) {
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printf("Query \"%s\" failed: %s\n",
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(char *)data, db_get_result_message(result));
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db_free(&handle);
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continue;
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}
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if(!db_processing(&handle)) {
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printf("OK\n");
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continue;
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}
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db_print_header(&handle);
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matching = 0;
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processed = 0;
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while(db_processing(&handle)) {
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PROCESS_PAUSE();
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result = db_process(&handle);
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switch(result) {
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case DB_GOT_ROW:
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/* The processed tuple matched the condition in the query. */
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matching++;
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processed++;
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db_print_tuple(&handle);
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break;
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case DB_OK:
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/* A tuple was processed, but did not match the condition. */
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processed++;
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continue;
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case DB_FINISHED:
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/* The processing has finished. Wait for a new command. */
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printf("[%ld tuples returned; %ld tuples processed]\n",
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(long)matching, (long)processed);
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printf("OK\n");
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default:
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if(DB_ERROR(result)) {
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printf("Processing error: %s\n", db_get_result_message(result));
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}
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db_free(&handle);
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break;
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}
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}
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}
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PROCESS_END();
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}
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