ledisdb/store/leveldb/leveldb_ext.h

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2014-07-25 13:58:00 +04:00
// +build leveldb
#ifndef LEVELDB_EXT_H
#define LEVELDB_EXT_H
#ifdef __cplusplus
extern "C" {
#endif
#include "leveldb/c.h"
/* Returns NULL if not found. Otherwise stores the value in **valptr.
Stores the length of the value in *vallen.
Returns a context must be later to free*/
extern void* leveldb_get_ext(
leveldb_t* db,
const leveldb_readoptions_t* options,
const char* key, size_t keylen,
char** valptr,
size_t* vallen,
char** errptr);
// Free context returns by leveldb_get_ext
extern void leveldb_get_free_ext(void* context);
// Below iterator functions like leveldb iterator but returns valid status for iterator
extern unsigned char leveldb_iter_seek_to_first_ext(leveldb_iterator_t*);
extern unsigned char leveldb_iter_seek_to_last_ext(leveldb_iterator_t*);
extern unsigned char leveldb_iter_seek_ext(leveldb_iterator_t*, const char* k, size_t klen);
extern unsigned char leveldb_iter_next_ext(leveldb_iterator_t*);
extern unsigned char leveldb_iter_prev_ext(leveldb_iterator_t*);
#ifdef __cplusplus
}
#endif
#endif