org.apache.lucene.index

Class SortedTermVectorMapper

java.lang.Object

org.apache.lucene.index.TermVectorMapper

org.apache.lucene.index.SortedTermVectorMapper

public class SortedTermVectorMapper
extends TermVectorMapper

Store a sorted collection of TermVectorEntrys. Collects all term information into a single, SortedSet.
NOTE: This Mapper ignores all Field information for the Document. This means that if you are using offset/positions you will not know what Fields they correlate with.
This is not thread-safe

Field Summary

Fields

Modifier and Type	Field and Description
static String	ALL Stand-in name for the field in TermVectorEntry.

Constructor Summary

Constructors

Constructor and Description
SortedTermVectorMapper(boolean ignoringPositions, boolean ignoringOffsets, Comparator<TermVectorEntry> comparator)
SortedTermVectorMapper(Comparator<TermVectorEntry> comparator)

Method Summary

Methods

Modifier and Type	Method and Description
SortedSet<TermVectorEntry>	getTermVectorEntrySet() The TermVectorEntrySet.
void	map(String term, int frequency, TermVectorOffsetInfo[] offsets, int[] positions) Map the Term Vector information into your own structure
void	setExpectations(String field, int numTerms, boolean storeOffsets, boolean storePositions) Tell the mapper what to expect in regards to field, number of terms, offset and position storage.

Methods inherited from class org.apache.lucene.index.TermVectorMapper

isIgnoringOffsets, isIgnoringPositions, setDocumentNumber

Methods inherited from class java.lang.Object

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

Field Detail

ALL

public static final String ALL

Stand-in name for the field in TermVectorEntry.

See Also:

Constant Field Values

Constructor Detail

SortedTermVectorMapper

public SortedTermVectorMapper(Comparator<TermVectorEntry> comparator)

Parameters:

comparator - A Comparator for sorting TermVectorEntrys

SortedTermVectorMapper

public SortedTermVectorMapper(boolean ignoringPositions,
                      boolean ignoringOffsets,
                      Comparator<TermVectorEntry> comparator)

Method Detail

map

public void map(String term,
       int frequency,
       TermVectorOffsetInfo[] offsets,
       int[] positions)

Description copied from class: TermVectorMapper

Map the Term Vector information into your own structure

Specified by:

map in class TermVectorMapper

Parameters:

term - The term to map

frequency - The frequency of the term

offsets - Offset information, may be null

positions - Position information, may be null

setExpectations

public void setExpectations(String field,
                   int numTerms,
                   boolean storeOffsets,
                   boolean storePositions)

Description copied from class: TermVectorMapper

Tell the mapper what to expect in regards to field, number of terms, offset and position storage. This method will be called once before retrieving the vector for a field. This method will be called before TermVectorMapper.map(String,int,TermVectorOffsetInfo[],int[]).

Specified by:

setExpectations in class TermVectorMapper

Parameters:

field - The field the vector is for

numTerms - The number of terms that need to be mapped

storeOffsets - true if the mapper should expect offset information

storePositions - true if the mapper should expect positions info

getTermVectorEntrySet

public SortedSet<TermVectorEntry> getTermVectorEntrySet()

The TermVectorEntrySet. A SortedSet of TermVectorEntry objects. Sort is by the comparator passed into the constructor.
This set will be empty until after the mapping process takes place.

Returns:

The SortedSet of TermVectorEntry.