org.terrier.structures.indexing.singlepass

Class BlockFieldPostingInRun.bfPIRPostingIterator

java.lang.Object

org.terrier.structures.postings.IterablePostingImpl

org.terrier.structures.indexing.singlepass.SimplePostingInRun.PIRPostingIterator

org.terrier.structures.indexing.singlepass.BlockFieldPostingInRun.bfPIRPostingIterator

All Implemented Interfaces:

Closeable, AutoCloseable, BlockPosting, FieldPosting, IterablePosting, Posting

Enclosing class:

BlockFieldPostingInRun

protected class BlockFieldPostingInRun.bfPIRPostingIterator
extends SimplePostingInRun.PIRPostingIterator
implements FieldPosting, BlockPosting

Field Summary

Fields

Modifier and Type	Field and Description
protected int	blockFreq
protected int[]	blockIds
protected int[]	fieldFrequencies

Fields inherited from interface org.terrier.structures.postings.IterablePosting

END_OF_LIST, EOL

Constructor Summary

Constructors

Constructor and Description
bfPIRPostingIterator(int runShift)

Method Summary

Modifier and Type	Method and Description
WritablePosting	asWritablePosting() Copies this posting to one free of an iterator.
int[]	getFieldFrequencies() Returns the frequencies of the term in each field of the document
int[]	getFieldLengths() Returns the lengths of the each fields in the current document
int[]	getPositions() Return positions of occurrences
protected void	readPostingNotDocid()
void	setFieldLengths(int[] fl) .

Methods inherited from class org.terrier.structures.indexing.singlepass.SimplePostingInRun.PIRPostingIterator

close, endOfPostings, getDocumentLength, getFrequency, getId, next, setId

Methods inherited from class org.terrier.structures.postings.IterablePostingImpl

next

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.terrier.structures.postings.Posting

getDocumentLength, getFrequency, getId, setId

Field Detail

fieldFrequencies

protected int[] fieldFrequencies

blockFreq

protected int blockFreq

blockIds

protected int[] blockIds

Constructor Detail

bfPIRPostingIterator

public bfPIRPostingIterator(int runShift)

Method Detail

getFieldFrequencies

public int[] getFieldFrequencies()

Description copied from interface: FieldPosting

Returns the frequencies of the term in each field of the document

Specified by:

getFieldFrequencies in interface FieldPosting

getFieldLengths

public int[] getFieldLengths()

Description copied from interface: FieldPosting

Returns the lengths of the each fields in the current document

Specified by:

getFieldLengths in interface FieldPosting

setFieldLengths

public void setFieldLengths(int[] fl)

. This operation is unsupported.

Specified by:

setFieldLengths in interface FieldPosting

readPostingNotDocid

protected void readPostingNotDocid()
                            throws IOException

Overrides:

readPostingNotDocid in class SimplePostingInRun.PIRPostingIterator

Throws:

IOException

getPositions

public int[] getPositions()

Description copied from interface: BlockPosting

Return positions of occurrences

Specified by:

getPositions in interface BlockPosting

asWritablePosting

public WritablePosting asWritablePosting()

Description copied from interface: Posting

Copies this posting to one free of an iterator. Kind of like a clone.

Specified by:

asWritablePosting in interface Posting

Overrides:

asWritablePosting in class SimplePostingInRun.PIRPostingIterator

Returns:

an identical posting, but which can be maniulated free of this iterator