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