org.terrier.querying.parser

Class DisjunctiveQuery

java.lang.Object

org.terrier.querying.parser.Query

org.terrier.querying.parser.MultiTermQuery

org.terrier.querying.parser.DisjunctiveQuery

All Implemented Interfaces:

Serializable, Cloneable

public class DisjunctiveQuery
extends MultiTermQuery

Models a disjunctive choice in single term queries in a query.

Author:

Craig Macdonald

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class org.terrier.querying.parser.Query

Query.ForEachQueryNode

Field Summary

Fields inherited from class org.terrier.querying.parser.MultiTermQuery

prefix, suffix, v

Fields inherited from class org.terrier.querying.parser.Query

child, tmpSTQ

Constructor Summary

Constructors

Constructor and Description
DisjunctiveQuery() default constructor
DisjunctiveQuery(String[] alternatives) Constructor

Method Summary

Methods

Modifier and Type	Method and Description
double	getWeight() Returns the weight of the disjunctive "term".
void	obtainAllOf(Class<? extends Query> c, List<Query> a) Returns all the queries of the specified class
void	obtainQueryTerms(MatchingQueryTerms terms) Prepares the query for matching by transforming the query objects to a set of query terms.
void	resetActive() reset active index
void	setActive(int _activeIndex) set active index
void	setWeight(double w) Sets the weight of the disjunctive "term".

Methods inherited from class org.terrier.querying.parser.MultiTermQuery

add, add, apply, applyTermPipeline, clone, getNumberOfTerms, getTerms, getTermsOf, obtainControls, obtainQueryTerms, parseTree, replace, toString

Methods inherited from class org.terrier.querying.parser.Query

setChild

Methods inherited from class java.lang.Object

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

Constructor Detail

DisjunctiveQuery

public DisjunctiveQuery(String[] alternatives)

Constructor

Parameters:

alternatives -

DisjunctiveQuery

public DisjunctiveQuery()

default constructor

Method Detail

setWeight

public void setWeight(double w)

Sets the weight of the disjunctive "term".

Parameters:

w - double the weight of the disjunctive "term".

getWeight

public double getWeight()

Returns the weight of the disjunctive "term".

Returns:

double the weight of the disjunctive "term".

resetActive

public void resetActive()

reset active index

setActive

public void setActive(int _activeIndex)

set active index

Parameters:

_activeIndex -

obtainAllOf

public void obtainAllOf(Class<? extends Query> c,
               List<Query> a)

Description copied from class: Query

Returns all the queries of the specified class

Overrides:

obtainAllOf in class MultiTermQuery

obtainQueryTerms

public void obtainQueryTerms(MatchingQueryTerms terms)

Description copied from class: MultiTermQuery

Prepares the query for matching by transforming the query objects to a set of query terms.

Overrides:

obtainQueryTerms in class MultiTermQuery

Parameters:

terms - MatchingQueryTerms the object which holds the query terms and their modifiers.