com.hazelcast.query.impl.predicates

Class CompositeIndexVisitor

java.lang.Object

com.hazelcast.query.impl.predicates.AbstractVisitor

com.hazelcast.query.impl.predicates.CompositeIndexVisitor

All Implemented Interfaces:

Visitor

public class CompositeIndexVisitor
extends AbstractVisitor

Optimizes single-attribute predicates into composite index predicates.

Given "a = 0 and b = 1" predicates and "a, b" index, the predicates may be optimized into a single composite index query: "(a, b) = (0, 1)".

Constructor Summary

Constructors

Constructor and Description
CompositeIndexVisitor()

Method Summary

Modifier and Type	Method and Description
Predicate	visit(AndPredicate andPredicate, Indexes indexes)

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

visit, visit, visit, visit, visit, visit

Methods inherited from class java.lang.Object

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

Constructor Detail

CompositeIndexVisitor

public CompositeIndexVisitor()

Method Detail

visit

public Predicate visit(AndPredicate andPredicate,
                       Indexes indexes)

Specified by:

visit in interface Visitor

Overrides:

visit in class AbstractVisitor