org.apache.lucene.search
Class Query

java.lang.Object
  |
  +--org.apache.lucene.search.Query

All Implemented Interfaces:

Serializable

Direct Known Subclasses:

BooleanQuery, MultiTermQuery, PhraseQuery, PrefixQuery, RangeQuery, TermQuery

public abstract class Query

extends Object

implements Serializable

The abstract base class for queries.

Instantiable subclasses are:

• TermQuery
• PhraseQuery
• BooleanQuery

A parser for queries is contained in:

• QueryParser

See Also:

Serialized Form

Field Summary

protected float

boost

Constructor Summary

Query()

Method Summary

float	getBoost() Gets the boost for this term.
void	setBoost(float b) Sets the boost for this term to b.
abstract String	toString(String field) Prints a query to a string, with field as the default field for terms.

Methods inherited from class java.lang.Object

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

Field Detail

boost

protected float boost

Constructor Detail

Query

public Query()

Method Detail

setBoost

public void setBoost(float b)

Sets the boost for this term to b. Documents containing this term will (in addition to the normal weightings) have their score multiplied by b.

getBoost

public float getBoost()

Gets the boost for this term. Documents containing this term will (in addition to the normal weightings) have their score multiplied by b. The boost is 1.0 by default.

toString

public abstract String toString(String field)

Prints a query to a string, with field as the default field for terms.

The representation used is one that is readable by QueryParser (although, if the query was created by the parser, the printed representation may not be exactly what was parsed).