com.hazelcast.query.impl.predicates

Class OrToInVisitor

java.lang.Object

com.hazelcast.query.impl.predicates.AbstractVisitor

com.hazelcast.query.impl.predicates.OrToInVisitor

All Implemented Interfaces:

Visitor

public class OrToInVisitor
extends AbstractVisitor

Transforms predicate (attribute = 1 or attribute = 2 or attribute = 3) into (attribute in (1, 2, 3) InPredicate is easier to evaluate in both indexed and non-indexed scenarios. When index is not used then Predicate require just a single reflective call the extract an attribute for QueryableEntry while disjunction of equalPredicate(s) requires one reflective call for each equalPredicate. The performance is even more significant when tha AbstractPredicate.attributeName is indexed. As then the InPrecicate can be evaluated by just a single hit into index. When index is used then

Constructor Summary

Constructors

Constructor and Description
OrToInVisitor()

Method Summary

Methods

Modifier and Type	Method and Description
Predicate	visit(OrPredicate orPredicate, Indexes indexes)

Methods inherited from class com.hazelcast.query.impl.predicates.AbstractVisitor

visit, visit

Methods inherited from class java.lang.Object

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

Constructor Detail

OrToInVisitor

public OrToInVisitor()

Method Detail

visit

public Predicate visit(OrPredicate orPredicate,
              Indexes indexes)

Specified by:

visit in interface Visitor

Overrides:

visit in class AbstractVisitor