CDBWriter Class Reference

#import <CDBFile.h>

Inherits CDBFile.

List of all members.

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Detailed Description

Writes out new CDB files.

This is a thin Objective-C wrapper around Michael Tokarev's tinycdb library, which is itself a rewrite of Dan Bernstein's <a href="http://cr.yp.to/cdb.html>cdb.

Public Member Functions
(id)	- initWithFile:
	Creates a CDBWriter that will generate a new CDB file at the given path.
(BOOL)	- addValuePointer:forKey:
	Writes a key/value pair to the file.
(BOOL)	- addValuePointers:count:forKey:
	Adds a key/value pair to the file, where the value is written from one or more discontiguous memory blocks.

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Member Function Documentation

- (id) initWithFile:

(NSString*)

path

Creates a CDBWriter that will generate a new CDB file at the given path.

The file is not accessed until -open is called; then it will be created or truncated if necessary.

- (BOOL) addValuePointer:		(CDBData)	value
forKey:		(CDBData)	key

Writes a key/value pair to the file.

Writing the same key twice is legal, but will waste the disk space that was occupied by the first value.

- (BOOL) addValuePointers:		(const CDBData[])	values
count:		(unsigned)	count
forKey:		(CDBData)	key

Adds a key/value pair to the file, where the value is written from one or more discontiguous memory blocks.

This has the same effect as the regular addValuePointer:forKey: method, but saves memory and time if the value needs to be assembled from multiple pieces. For example, CDBStore uses this call internally to prefix the user-supplied value with a tag byte, without having to copy the tag and value into a temporary buffer.

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The documentation for this class was generated from the following files:

• CDBFile.h
• CDBFile.m

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