org.apache.hadoop.contrib.index.lucene

类 LuceneUtil

java.lang.Object

org.apache.hadoop.contrib.index.lucene.LuceneUtil

public final class LuceneUtil
extends Object

This class copies some methods from Lucene's SegmentInfos since that class is not public.

构造器概要

构造器

构造器和说明
LuceneUtil()

方法概要

方法

限定符和类型	方法和说明
static long	generationFromSegmentsFileName(String fileName) Parse the generation off the segments file name and return it.
static long	getCurrentSegmentGeneration(Directory directory) Get the generation (N) of the current segments_N file in the directory.
static boolean	isSegmentsFile(String name) Check if the file is a segments_N file
static boolean	isSegmentsGenFile(String name) Check if the file is the segments.gen file

从类继承的方法 java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

构造器详细资料

LuceneUtil

public LuceneUtil()

方法详细资料

isSegmentsFile

public static boolean isSegmentsFile(String name)

Check if the file is a segments_N file

参数:

name -

返回:

true if the file is a segments_N file

isSegmentsGenFile

public static boolean isSegmentsGenFile(String name)

Check if the file is the segments.gen file

参数:

name -

返回:

true if the file is the segments.gen file

getCurrentSegmentGeneration

public static long getCurrentSegmentGeneration(Directory directory)
                                        throws IOException

Get the generation (N) of the current segments_N file in the directory.

参数:

directory - -- directory to search for the latest segments_N file

抛出:

IOException

generationFromSegmentsFileName

public static long generationFromSegmentsFileName(String fileName)

Parse the generation off the segments file name and return it.