eu.stratosphere.example.java.record.relational

Class WebLogAnalysis.FilterVisits

java.lang.Object

eu.stratosphere.api.common.functions.AbstractFunction

eu.stratosphere.api.java.record.functions.MapFunction

eu.stratosphere.example.java.record.relational.WebLogAnalysis.FilterVisits

All Implemented Interfaces:

Function, GenericMapper<Record,Record>, Serializable

Enclosing class:

WebLogAnalysis

public static class WebLogAnalysis.FilterVisits
extends MapFunction
implements Serializable

MapFunction that filters for records of the visits relation where the year (from the date string) is equal to a certain value.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
WebLogAnalysis.FilterVisits()

Method Summary

Methods

Modifier and Type	Method and Description
void	map(Record record, Collector<Record> out) Filters for records of the visits relation where the year of visit is equal to a specified value.

Methods inherited from class eu.stratosphere.api.common.functions.AbstractFunction

close, getIterationRuntimeContext, getRuntimeContext, open, setRuntimeContext

Methods inherited from class java.lang.Object

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

Methods inherited from interface eu.stratosphere.api.common.functions.Function

close, getRuntimeContext, open, setRuntimeContext

Constructor Detail

WebLogAnalysis.FilterVisits

public WebLogAnalysis.FilterVisits()

Method Detail

map

public void map(Record record,
       Collector<Record> out)
         throws Exception

Filters for records of the visits relation where the year of visit is equal to a specified value. The URL of all visit records passing the filter is emitted. Output Format: 0: URL

Specified by:

map in interface GenericMapper<Record,Record>

Specified by:

map in class MapFunction

Throws:

Exception