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Telegram/Share/PSLMDBKeyValueCursor.h
2015-10-01 19:19:52 +03:00

21 lines
856 B
Objective-C

#import <Foundation/Foundation.h>
#import "lmdb.h"
@class PSLMDBTable;
typedef enum {
PSKeyValueCursorDirectionForward = 0,
PSKeyValueCursorDirectionBack = 1
} PSKeyValueCursorDirection;
@interface PSLMDBKeyValueCursor : NSObject
- (instancetype)initWithTable:(PSLMDBTable *)table transaction:(MDB_txn *)transaction cursor:(MDB_cursor *)cursor;
- (bool)positionAt:(uint8_t const **)key keyLength:(NSUInteger *)keyLength value:(uint8_t const **)value valueLength:(NSUInteger *)valueLength directionIfNotFound:(PSKeyValueCursorDirection)directionIfNotFound;
- (bool)previous:(uint8_t const **)key keyLength:(NSUInteger *)keyLength value:(uint8_t const **)value valueLength:(NSUInteger *)valueLength;
- (bool)next:(uint8_t const **)key keyLength:(NSUInteger *)keyLength value:(uint8_t const **)value valueLength:(NSUInteger *)valueLength;
@end