org.apache.lucene.search

Class TermsFilter

java.lang.Object

org.apache.lucene.search.Filter

org.apache.lucene.search.TermsFilter

All Implemented Interfaces:

java.io.Serializable

public class TermsFilter
extends Filter

Constructs a filter for docs matching any of the terms added to this class. Unlike a RangeFilter this can be used for filtering on multiple terms that are not necessarily in a sequence. An example might be a collection of primary keys from a database query result or perhaps a choice of "category" labels picked by the end user. As a filter, this is much faster than the equivalent query (a BooleanQuery with many "should" TermQueries)

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
TermsFilter()

Method Summary

Methods

Modifier and Type	Method and Description
void	addTerm(Term term) Adds a term to the list of acceptable terms
java.util.BitSet	bits(IndexReader reader)
boolean	equals(java.lang.Object obj)
DocIdSet	getDocIdSet(IndexReader reader)
int	hashCode()

Methods inherited from class java.lang.Object

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

Constructor Detail

TermsFilter

public TermsFilter()

Method Detail

addTerm

public void addTerm(Term term)

Adds a term to the list of acceptable terms

Parameters:

term -

bits

public java.util.BitSet bits(IndexReader reader)
                      throws java.io.IOException

Overrides:

bits in class Filter

Returns:

A BitSet with true for documents which should be permitted in search results, and false for those that should not.

Throws:

java.io.IOException

getDocIdSet

public DocIdSet getDocIdSet(IndexReader reader)
                     throws java.io.IOException

Overrides:

getDocIdSet in class Filter

Returns:

a DocIdSet that provides the documents which should be permitted or prohibited in search results.

Throws:

java.io.IOException

See Also:

DocIdBitSet

equals

public boolean equals(java.lang.Object obj)

Overrides:

equals in class java.lang.Object

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object