org.apache.hadoop.contrib.index.example
Class LineDocInputFormat

java.lang.Object
  org.apache.hadoop.mapred.FileInputFormat<DocumentID,LineDocTextAndOp>
      org.apache.hadoop.contrib.index.example.LineDocInputFormat

All Implemented Interfaces:

InputFormat<DocumentID,LineDocTextAndOp>

public class LineDocInputFormat
extends FileInputFormat<DocumentID,LineDocTextAndOp>

An InputFormat for LineDoc for plain text files where each line is a doc.

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.hadoop.mapred.FileInputFormat

FileInputFormat.Counter

Field Summary

Fields inherited from class org.apache.hadoop.mapred.FileInputFormat

LOG

Constructor Summary

LineDocInputFormat()

Method Summary

RecordReader<DocumentID,LineDocTextAndOp>

getRecordReader(InputSplit split, JobConf job, Reporter reporter) Get the RecordReader for the given InputSplit.

Methods inherited from class org.apache.hadoop.mapred.FileInputFormat

addInputPath, addInputPaths, computeSplitSize, getBlockIndex, getInputPathFilter, getInputPaths, getSplitHosts, getSplits, isSplitable, listStatus, setInputPathFilter, setInputPaths, setInputPaths, setMinSplitSize

Methods inherited from class java.lang.Object

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

Constructor Detail

LineDocInputFormat

public LineDocInputFormat()

Method Detail

getRecordReader

public RecordReader<DocumentID,LineDocTextAndOp> getRecordReader(InputSplit split,
                                                                 JobConf job,
                                                                 Reporter reporter)
                                                          throws IOException

Description copied from interface: InputFormat

Get the RecordReader for the given InputSplit.

It is the responsibility of the RecordReader to respect record boundaries while processing the logical split to present a record-oriented view to the individual task.

Specified by:

getRecordReader in interface InputFormat<DocumentID,LineDocTextAndOp>

Specified by:

getRecordReader in class FileInputFormat<DocumentID,LineDocTextAndOp>

Parameters:

split - the InputSplit

job - the job that this split belongs to

Returns:

a RecordReader

Throws:

IOException