org.apache.pig.piggybank.storage

Class XMLLoader.XMLRecordReader

java.lang.Object

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

org.apache.pig.piggybank.storage.XMLLoader.XMLRecordReader

All Implemented Interfaces:

java.io.Closeable, java.lang.AutoCloseable

Enclosing class:

XMLLoader

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

Use this record reader to read XML tags out of a text file. It matches only the tags identified by an identifier configured through a call to setXMLIdentifier(String). It there are nesting tags of the given identifier, only the top level one is returned which also includes all enclosed tags.

Field Summary

Fields

Modifier and Type	Field and Description
protected org.apache.hadoop.mapreduce.RecordReader<org.apache.hadoop.io.LongWritable,org.apache.hadoop.io.Text>	wrapped

Constructor Summary

Constructors

Constructor and Description
XMLLoader.XMLRecordReader(org.apache.hadoop.mapreduce.RecordReader<org.apache.hadoop.io.LongWritable,org.apache.hadoop.io.Text> wrapped)

Method Summary

Methods

Modifier and Type	Method and Description
void	close()
boolean	equals(java.lang.Object obj)
org.apache.hadoop.io.LongWritable	getCurrentKey()
org.apache.hadoop.io.Text	getCurrentValue()
float	getProgress()
int	hashCode()
void	initialize(org.apache.hadoop.mapreduce.InputSplit split, org.apache.hadoop.mapreduce.TaskAttemptContext context) Delegate the initialization method to the wrapped stream after changing the length of the split to be non-ending.
boolean	nextKeyValue()
void	setXMLIdentifier(java.lang.String identifier)
java.lang.String	toString()

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

wrapped

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

Constructor Detail

XMLLoader.XMLRecordReader

public XMLLoader.XMLRecordReader(org.apache.hadoop.mapreduce.RecordReader<org.apache.hadoop.io.LongWritable,org.apache.hadoop.io.Text> wrapped)

Method Detail

initialize

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

Delegate the initialization method to the wrapped stream after changing the length of the split to be non-ending.

Specified by:

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

Throws:

java.io.IOException

java.lang.InterruptedException

setXMLIdentifier

public void setXMLIdentifier(java.lang.String identifier)

close

public void close()
           throws java.io.IOException

Specified by:

close in interface java.io.Closeable

Specified by:

close in interface java.lang.AutoCloseable

Specified by:

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

Throws:

java.io.IOException

equals

public boolean equals(java.lang.Object obj)

Overrides:

equals in class java.lang.Object

getCurrentKey

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

Specified by:

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

Throws:

java.io.IOException

java.lang.InterruptedException

getCurrentValue

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

Specified by:

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

Throws:

java.io.IOException

java.lang.InterruptedException

getProgress

public float getProgress()
                  throws java.io.IOException,
                         java.lang.InterruptedException

Specified by:

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

Throws:

java.io.IOException

java.lang.InterruptedException

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object

nextKeyValue

public boolean nextKeyValue()
                     throws java.io.IOException,
                            java.lang.InterruptedException

Specified by:

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

Throws:

java.io.IOException

java.lang.InterruptedException

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object