org.apache.hadoop.mapreduce.lib.input

类 SequenceFileInputFilter.RegexFilter

java.lang.Object

org.apache.hadoop.mapreduce.lib.input.SequenceFileInputFilter.FilterBase

org.apache.hadoop.mapreduce.lib.input.SequenceFileInputFilter.RegexFilter

所有已实现的接口:

Configurable, SequenceFileInputFilter.Filter

封闭类:

SequenceFileInputFilter<K,V>

public static class SequenceFileInputFilter.RegexFilter
extends SequenceFileInputFilter.FilterBase

Records filter by matching key to regex

构造器概要

构造器

构造器和说明
SequenceFileInputFilter.RegexFilter()

方法概要

方法

限定符和类型	方法和说明
boolean	accept(Object key) Filtering method If key matches the regex, return true; otherwise return false
void	setConf(Configuration conf) configure the Filter by checking the configuration
static void	setPattern(Configuration conf, String regex) Define the filtering regex and stores it in conf

从类继承的方法 org.apache.hadoop.mapreduce.lib.input.SequenceFileInputFilter.FilterBase

getConf

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

SequenceFileInputFilter.RegexFilter

public SequenceFileInputFilter.RegexFilter()

方法详细资料

setPattern

public static void setPattern(Configuration conf,
              String regex)
                       throws PatternSyntaxException

Define the filtering regex and stores it in conf

参数:

conf - where the regex is set

regex - regex used as a filter

抛出:

PatternSyntaxException

setConf

public void setConf(Configuration conf)

configure the Filter by checking the configuration

accept

public boolean accept(Object key)

Filtering method If key matches the regex, return true; otherwise return false

参数:

key - record key

返回:

true if a record is accepted; return false otherwise

另请参阅:

SequenceFileInputFilter.Filter.accept(Object)