Package com.yahoo.search.predicate.optimization

Class OrSimplifier

java.lang.Object

com.yahoo.search.predicate.optimization.OrSimplifier

All Implemented Interfaces:

PredicateProcessor

public class OrSimplifier
extends Object
implements PredicateProcessor

Simplifies Disjunction nodes where all children are of type FeatureSet. All FeatureSet that share the same key are merged into a single FeatureSet. The Disjunction is removed if all children merges into a single feature set.

Author:

bjorncs

Constructor Summary

Constructors

Constructor	Description
OrSimplifier()

Method Summary

Modifier and Type	Method	Description
Predicate	process(Predicate predicate, PredicateOptions options)	Processes a predicate.
Predicate	simplifyTree(Predicate predicate)

Methods inherited from class java.lang.Object

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

Constructor Details

OrSimplifier

public OrSimplifier()

Method Details

process

public Predicate process(Predicate predicate,
 PredicateOptions options)

Description copied from interface: PredicateProcessor

Processes a predicate.

Specified by:

process in interface PredicateProcessor

Returns:

the processed predicate.

simplifyTree

public Predicate simplifyTree(Predicate predicate)