82 lines
1.9 KiB
C
82 lines
1.9 KiB
C
/*
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* Copyright (c) 2019 TAOS Data, Inc. <jhtao@taosdata.com>
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*
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* This program is free software: you can use, redistribute, and/or modify
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* it under the terms of the GNU Affero General Public License, version 3
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* or later ("AGPL"), as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef _TD_COMMON_SCHEMA_H_
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#define _TD_COMMON_SCHEMA_H_
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#include "os.h"
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#include "tarray.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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typedef uint16_t col_id_t;
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#if 0
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typedef struct STColumn {
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/// column name
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char *cname;
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union {
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/// for encode purpose
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uint64_t info;
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struct {
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uint64_t sma : 1;
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/// column data type
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uint64_t type : 7;
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/// column id
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uint64_t cid : 16;
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/// max bytes of the column
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uint64_t bytes : 32;
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/// reserved
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uint64_t reserve : 8;
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};
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};
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/// comment about the column
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char *comment;
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} STColumn;
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typedef struct STSchema {
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/// schema version
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uint16_t sver;
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/// number of columns
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uint16_t ncols;
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/// sma attributes
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struct {
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bool sma;
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SArray *smaArray;
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};
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/// column info
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STColumn cols[];
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} STSchema;
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typedef struct {
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uint64_t size;
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STSchema *pSchema;
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} STShemaBuilder;
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#define tSchemaBuilderInit(target, capacity) \
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{ .size = (capacity), .pSchema = (target) }
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void tSchemaBuilderSetSver(STShemaBuilder *pSchemaBuilder, uint16_t sver);
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void tSchemaBuilderSetSMA(bool sma, SArray *smaArray);
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int tSchemaBuilderPutColumn(char *cname, bool sma, uint8_t type, col_id_t cid, uint32_t bytes, char *comment);
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#endif
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#ifdef __cplusplus
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}
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#endif
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#endif /*_TD_COMMON_SCHEMA_H_*/ |