org.neo4j.storageengine.api

Interface CommandReaderFactory

public interface CommandReaderFactory

Provides CommandReader instances for specific entry versions.

Method Summary

Modifier and Type	Method and Description
CommandReader	byVersion(byte version, byte legacyHeaderVersion) Given version give back a CommandReader capable of reading such commands.

Method Detail

byVersion

CommandReader byVersion(byte version,
                        byte legacyHeaderVersion)

Given version give back a CommandReader capable of reading such commands. Command writers/readers may choose to use log entry version for command versioning or could introduce its own scheme.

Parameters:

version - log entry version. Versions are typically 0 or negative numbers.

legacyHeaderVersion - legacy log header version for breaking tie between multiple versions of value 0. Will go away when 1.9 format becomes unsupported.

Returns:

CommandReader for reading commands of that version.