nes-proj/os/storage/antelope/storage.h
2017-09-01 15:52:11 +02:00

77 lines
3.0 KiB
C

/*
* Copyright (c) 2010, Swedish Institute of Computer Science
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
/**
* \file
* The storage interface used by the database.
* \author
* Nicolas Tsiftes <nvt@sics.se>
*/
#ifndef STORAGE_H
#define STORAGE_H
#include "index.h"
#include "relation.h"
#define TABLE_NAME_SUFFIX ".row"
#define TABLE_NAME_LENGTH (RELATION_NAME_LENGTH + \
sizeof(TABLE_NAME_SUFFIX) - 1)
#define INDEX_NAME_SUFFIX ".idx"
#define INDEX_NAME_LENGTH (RELATION_NAME_LENGTH + \
sizeof(INDEX_NAME_SUFFIX) - 1)
typedef unsigned char * storage_row_t;
char *storage_generate_file(char *, unsigned long);
db_result_t storage_load(relation_t *);
void storage_unload(relation_t *);
db_result_t storage_get_relation(relation_t *, char *);
db_result_t storage_put_relation(relation_t *);
db_result_t storage_drop_relation(relation_t *, int);
db_result_t storage_rename_relation(char *, char *);
db_result_t storage_put_attribute(relation_t *, attribute_t *);
db_result_t storage_get_index(index_t *, relation_t *, attribute_t *);
db_result_t storage_put_index(index_t *);
db_result_t storage_get_row(relation_t *, tuple_id_t *, storage_row_t);
db_result_t storage_put_row(relation_t *, storage_row_t);
db_result_t storage_get_row_amount(relation_t *, tuple_id_t *);
db_storage_id_t storage_open(const char *);
void storage_close(db_storage_id_t);
db_result_t storage_read(db_storage_id_t, void *, unsigned long, unsigned);
db_result_t storage_write(db_storage_id_t, void *, unsigned long, unsigned);
#endif /* STORAGE_H */