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

90 lines
2.7 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
* Definitions for attributes.
* \author
* Nicolas Tsiftes <nvt@sics.se>
*/
#ifndef ATTRIBUTE_H
#define ATTRIBUTE_H
#include <stdint.h>
#include <stdlib.h>
#include "lib/list.h"
#include "db-options.h"
typedef enum {
DOMAIN_UNSPECIFIED = 0,
DOMAIN_INT = 1,
DOMAIN_LONG = 2,
DOMAIN_STRING = 3,
DOMAIN_FLOAT = 4
} domain_t;
#define ATTRIBUTE_FLAG_NO_STORE 0x1
#define ATTRIBUTE_FLAG_INVALID 0x2
#define ATTRIBUTE_FLAG_PRIMARY_KEY 0x4
#define ATTRIBUTE_FLAG_UNIQUE 0x8
struct attribute {
struct attribute *next;
void *index;
long aggregation_value;
uint8_t aggregator;
uint8_t domain;
uint8_t element_size;
uint8_t flags;
char name[ATTRIBUTE_NAME_LENGTH + 1];
};
typedef struct attribute attribute_t;
typedef uint8_t attribute_id_t;
struct attribute_value {
union {
int int_value;
long long_value;
unsigned char *string_value;
} u;
domain_t domain;
};
typedef struct attribute_value attribute_value_t;
#define VALUE_LONG(value) (value)->u.long_value
#define VALUE_INT(value) (value)->u.int_value
#define VALUE_STRING(value) (value)->u.string_value
#endif /* ATTRIBUTES_H */