tdb.h

/*
 * Copyright (c) 2019 TAOS Data, Inc. <jhtao@taosdata.com>
 *
 * This program is free software: you can use, redistribute, and/or modify
 * it under the terms of the GNU Affero General Public License, version 3
 * or later ("AGPL"), as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 */

#ifndef _TD_TDB_H_
#define _TD_TDB_H_

#include "os.h"

#ifdef __cplusplus
extern "C" {
#endif

#define TDB_EXTERN
#define TDB_PUBLIC
#define TDB_STATIC static

typedef enum { TDB_BTREE_T = 0, TDB_HASH_T = 1, TDB_HEAP_T = 2 } tdb_db_t;

// Forward declarations
typedef struct TDB        TDB;
typedef struct TDB_MPOOL  TDB_MPOOL;
typedef struct TDB_MPFILE TDB_MPFILE;
typedef struct TDB_CURSOR TDB_CURSOR;

typedef struct {
  void*    bdata;
  uint32_t size;
} TDB_KEY, TDB_VALUE;

// TDB Operations
int tdbCreateDB(TDB** dbpp, tdb_db_t type);
int tdbOpenDB(TDB* dbp, const char* fname, const char* dbname, uint32_t flags);
int tdbCloseDB(TDB* dbp, uint32_t flags);
int tdbPut(TDB* dbp, const TDB_KEY* key, const TDB_VALUE* value, uint32_t flags);
int tdbGet(TDB* dbp, const TDB_KEY* key, TDB_VALUE* value, uint32_t flags);

// TDB_MPOOL
int tdbOpenMPool(TDB_MPOOL** mp);
int tdbCloseMPool(TDB_MPOOL* mp);

// TDB_MPFILE
int tdbOpenMPFile(TDB_MPFILE** mpf, TDB_MPOOL* mp);
int tdbCloseMPFile(TDB_MPFILE** mpf);

// TDB_CURSOR
int tdbOpenCursor(TDB* dbp, TDB_CURSOR** tdbcpp);
int tdbCloseCurosr(TDB_CURSOR* tdbcp);

#ifdef __cplusplus
}
#endif

#endif /*_TD_TDB_H_*/