org.apache.lucene.search

Class QueryTermVector

java.lang.Object

org.apache.lucene.search.QueryTermVector

All Implemented Interfaces:

TermFreqVector

public class QueryTermVector
extends Object
implements TermFreqVector

Constructor Summary

Constructors

Constructor and Description
QueryTermVector(String[] queryTerms)
QueryTermVector(String queryString, Analyzer analyzer)

Method Summary

Methods

Modifier and Type	Method and Description
String	getField() The Fieldable name.
int[]	getTermFrequencies() Array of term frequencies.
String[]	getTerms()
int[]	indexesOf(String[] terms, int start, int len) Just like indexOf(int) but searches for a number of terms at the same time.
int	indexOf(String term) Return an index in the term numbers array returned from getTerms at which the term with the specified term appears.
int	size()
String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

QueryTermVector

public QueryTermVector(String[] queryTerms)

Parameters:

queryTerms - The original list of terms from the query, can contain duplicates

QueryTermVector

public QueryTermVector(String queryString,
               Analyzer analyzer)

Method Detail

getField

public String getField()

Description copied from interface: TermFreqVector

The Fieldable name.

Specified by:

getField in interface TermFreqVector

Returns:

The name of the field this vector is associated with.

toString

public final String toString()

Overrides:

toString in class Object

size

public int size()

Specified by:

size in interface TermFreqVector

Returns:

The number of terms in the term vector.

getTerms

public String[] getTerms()

Specified by:

getTerms in interface TermFreqVector

Returns:

An Array of term texts in ascending order.

getTermFrequencies

public int[] getTermFrequencies()

Description copied from interface: TermFreqVector

Array of term frequencies. Locations of the array correspond one to one to the terms in the array obtained from getTerms method. Each location in the array contains the number of times this term occurs in the document or the document field.

Specified by:

getTermFrequencies in interface TermFreqVector

indexOf

public int indexOf(String term)

Description copied from interface: TermFreqVector

Return an index in the term numbers array returned from getTerms at which the term with the specified term appears. If this term does not appear in the array, return -1.

Specified by:

indexOf in interface TermFreqVector

indexesOf

public int[] indexesOf(String[] terms,
              int start,
              int len)

Description copied from interface: TermFreqVector

Just like indexOf(int) but searches for a number of terms at the same time. Returns an array that has the same size as the number of terms searched for, each slot containing the result of searching for that term number.

Specified by:

indexesOf in interface TermFreqVector

Parameters:

terms - array containing terms to look for

start - index in the array where the list of terms starts

len - the number of terms in the list