org.terrier.structures
Class FSOMapFileLexicon.MapFileLexiconEntryIterator

java.lang.Object
  org.terrier.structures.FSOMapFileLexicon.MapFileLexiconEntryIterator

All Implemented Interfaces:

Closeable, Iterator<LexiconEntry>, Skipable

Enclosing class:

FSOMapFileLexicon

public static class FSOMapFileLexicon.MapFileLexiconEntryIterator
extends Object
implements Iterator<LexiconEntry>, Closeable, Skipable

Iterate through the values in order

Field Summary

protected Iterator<Map.Entry<org.apache.hadoop.io.Text,LexiconEntry>>

internalIterator

Constructor Summary

FSOMapFileLexicon.MapFileLexiconEntryIterator(Iterator<Map.Entry<org.apache.hadoop.io.Text,LexiconEntry>> _internalIterator)
Construct an instance of the class with

FSOMapFileLexicon.MapFileLexiconEntryIterator(String filename, FixedSizeWriteableFactory<org.apache.hadoop.io.Text> keyFactory, FixedSizeWriteableFactory<LexiconEntry> valueFactory)
Construct an instance of the class with

FSOMapFileLexicon.MapFileLexiconEntryIterator(String structureName, Index index)
Construct an instance of the class with

FSOMapFileLexicon.MapFileLexiconEntryIterator(String structureName, String path, String prefix, FixedSizeWriteableFactory<org.apache.hadoop.io.Text> keyFactory, FixedSizeWriteableFactory<LexiconEntry> valueFactory)
Construct an instance of the class with

Method Summary

void	close()
boolean	hasNext()
LexiconEntry	next()
void	remove()
void	skip(int numEntries) Skip forward the specified number of entries.

Methods inherited from class java.lang.Object

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

Field Detail

internalIterator

protected Iterator<Map.Entry<org.apache.hadoop.io.Text,LexiconEntry>> internalIterator

Constructor Detail

FSOMapFileLexicon.MapFileLexiconEntryIterator

public FSOMapFileLexicon.MapFileLexiconEntryIterator(String structureName,
                                                     Index index)
                                              throws IOException

Construct an instance of the class with

Parameters:

structureName -

index -

Throws:

IOException

FSOMapFileLexicon.MapFileLexiconEntryIterator

public FSOMapFileLexicon.MapFileLexiconEntryIterator(String structureName,
                                                     String path,
                                                     String prefix,
                                                     FixedSizeWriteableFactory<org.apache.hadoop.io.Text> keyFactory,
                                                     FixedSizeWriteableFactory<LexiconEntry> valueFactory)
                                              throws IOException

Construct an instance of the class with

Parameters:

structureName -

path -

prefix -

keyFactory -

valueFactory -

Throws:

IOException

FSOMapFileLexicon.MapFileLexiconEntryIterator

public FSOMapFileLexicon.MapFileLexiconEntryIterator(String filename,
                                                     FixedSizeWriteableFactory<org.apache.hadoop.io.Text> keyFactory,
                                                     FixedSizeWriteableFactory<LexiconEntry> valueFactory)
                                              throws IOException

Construct an instance of the class with

Parameters:

filename -

keyFactory -

valueFactory -

Throws:

IOException

FSOMapFileLexicon.MapFileLexiconEntryIterator

public FSOMapFileLexicon.MapFileLexiconEntryIterator(Iterator<Map.Entry<org.apache.hadoop.io.Text,LexiconEntry>> _internalIterator)

Construct an instance of the class with

Parameters:

_internalIterator -

Method Detail

hasNext

public boolean hasNext()

Specified by:

hasNext in interface Iterator<LexiconEntry>

next

public LexiconEntry next()

Specified by:

next in interface Iterator<LexiconEntry>

remove

public void remove()

Specified by:

remove in interface Iterator<LexiconEntry>

close

public void close()
           throws IOException

Specified by:

close in interface Closeable

Throws:

IOException

skip

public void skip(int numEntries)
          throws IOException

Skip forward the specified number of entries. Should be followed by a next() call.

Specified by:

skip in interface Skipable

Parameters:

numEntries - number of entries to skip

Throws:

IOException - if an IO problem occurs.