Package org.apache.vxquery.hdfs2

Class XmlCollectionWithTagInputFormat.XmlRecordReader

java.lang.Object

org.apache.hadoop.mapreduce.RecordReader<org.apache.hadoop.io.LongWritable,org.apache.hadoop.io.Text>

org.apache.vxquery.hdfs2.XmlCollectionWithTagInputFormat.XmlRecordReader

All Implemented Interfaces:

Closeable, AutoCloseable

Enclosing class:

XmlCollectionWithTagInputFormat

public static class XmlCollectionWithTagInputFormat.XmlRecordReader
extends org.apache.hadoop.mapreduce.RecordReader<org.apache.hadoop.io.LongWritable,org.apache.hadoop.io.Text>

XMLRecordReader class to read through a given xml document to output xml blocks as records as specified by the end tag

Field Summary

Fields

Modifier and Type	Field	Description
static byte[]	nl

Constructor Summary

Constructors

Constructor	Description
XmlRecordReader(org.apache.hadoop.mapreduce.lib.input.FileSplit split, org.apache.hadoop.conf.Configuration conf)

Method Summary

Modifier and Type	Method	Description
void	close()
org.apache.hadoop.io.LongWritable	getCurrentKey()
org.apache.hadoop.io.Text	getCurrentValue()
float	getProgress()
void	initialize(org.apache.hadoop.mapreduce.InputSplit split, org.apache.hadoop.mapreduce.TaskAttemptContext context)
boolean	nextKeyValue()

Methods inherited from class java.lang.Object

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

Field Detail

nl

public static byte[] nl

Constructor Detail

XmlRecordReader

public XmlRecordReader(org.apache.hadoop.mapreduce.lib.input.FileSplit split,
                       org.apache.hadoop.conf.Configuration conf)
                throws IOException

Throws:

IOException

Method Detail

close

public void close()
           throws IOException

Specified by:

close in interface AutoCloseable

Specified by:

close in interface Closeable

Specified by:

close in class org.apache.hadoop.mapreduce.RecordReader<org.apache.hadoop.io.LongWritable,org.apache.hadoop.io.Text>

Throws:

IOException

getProgress

public float getProgress()
                  throws IOException

Specified by:

getProgress in class org.apache.hadoop.mapreduce.RecordReader<org.apache.hadoop.io.LongWritable,org.apache.hadoop.io.Text>

Throws:

IOException

getCurrentKey

public org.apache.hadoop.io.LongWritable getCurrentKey()
                                                throws IOException,
                                                       InterruptedException

Specified by:

getCurrentKey in class org.apache.hadoop.mapreduce.RecordReader<org.apache.hadoop.io.LongWritable,org.apache.hadoop.io.Text>

Throws:

IOException

InterruptedException

getCurrentValue

public org.apache.hadoop.io.Text getCurrentValue()
                                          throws IOException,
                                                 InterruptedException

Specified by:

getCurrentValue in class org.apache.hadoop.mapreduce.RecordReader<org.apache.hadoop.io.LongWritable,org.apache.hadoop.io.Text>

Throws:

IOException

InterruptedException

initialize

public void initialize(org.apache.hadoop.mapreduce.InputSplit split,
                       org.apache.hadoop.mapreduce.TaskAttemptContext context)
                throws IOException,
                       InterruptedException

Specified by:

initialize in class org.apache.hadoop.mapreduce.RecordReader<org.apache.hadoop.io.LongWritable,org.apache.hadoop.io.Text>

Throws:

IOException

InterruptedException

nextKeyValue

public boolean nextKeyValue()
                     throws IOException,
                            InterruptedException

Specified by:

nextKeyValue in class org.apache.hadoop.mapreduce.RecordReader<org.apache.hadoop.io.LongWritable,org.apache.hadoop.io.Text>

Throws:

IOException

InterruptedException