com.sun.labs.minion.retrieval
Class ScoredQuickOr

java.lang.Object
  com.sun.labs.minion.retrieval.QuickOr
      com.sun.labs.minion.retrieval.ScoredQuickOr

public class ScoredQuickOr
extends QuickOr

A class that will allow us to quickly or together a number of terms. The class will attempt to optimize for a number of conditions, including the case where the resulting document set can be stored in a single array.

Field Summary

protected static java.lang.String

logTag

Fields inherited from class com.sun.labs.minion.retrieval.QuickOr

added, docs, p, part

Constructor Summary

ScoredQuickOr(DiskPartition part, int estSize)
Creates a quick or for a given partition.

Method Summary

void	add(int[] d, float[] w, float qw) Adds an explicit set of documents and weights to this quick or.
void	add(PostingsIterator pi) Adds the contents of a postings iterator to this quick or.
void	add(PostingsIterator pi, float qw)
void	add(PostingsIterator pi, float dw, float qw)
void	addWeightOnly(float qw) Adds only a weight to this QuickOr.
ArrayGroup	getGroup()
void	setField(int fieldID)

Methods inherited from class com.sun.labs.minion.retrieval.QuickOr

setQueryStats, shouldStoreAll

Methods inherited from class java.lang.Object

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

Field Detail

logTag

protected static java.lang.String logTag

Constructor Detail

ScoredQuickOr

public ScoredQuickOr(DiskPartition part,
                     int estSize)

Creates a quick or for a given partition. The estimated size of the result set is used for our initial calculation.

Method Detail

setField

public void setField(int fieldID)

add

public void add(PostingsIterator pi)

Adds the contents of a postings iterator to this quick or.

Overrides:

add in class QuickOr

Parameters:

pi - the iterator for the postings.

add

public void add(PostingsIterator pi,
                float qw)

Overrides:

add in class QuickOr

add

public void add(PostingsIterator pi,
                float dw,
                float qw)

add

public void add(int[] d,
                float[] w,
                float qw)

Adds an explicit set of documents and weights to this quick or.

Overrides:

add in class QuickOr

Parameters:

d - the documents to add

w - the weights associated with the documents

qw - a weight associated with a query term, which will be multiplied against the weights in the array.

addWeightOnly

public void addWeightOnly(float qw)

Adds only a weight to this QuickOr. This allows for document representations where not all terms from a document appear in the partition that this QuickOr corresponds to. We still want those terms' weights to be accounted for.

Overrides:

addWeightOnly in class QuickOr

Parameters:

qw - the query weight of a term to add to this QuickOr

getGroup

public ArrayGroup getGroup()

Overrides:

getGroup in class QuickOr