Package com.illumon.iris.web.shared.ast

Class ConvertEqToIn

java.lang.Object

com.illumon.iris.web.shared.ast.ReplacingVisitor

com.illumon.iris.web.shared.ast.ConvertEqToIn

public class ConvertEqToIn
extends ReplacingVisitor

IN-type expressions are more efficient at runtime than EQUALS, and also compile more quickly. However, they only work when comparing a column reference to a literal value, so this transformation looks for those and replaces the EQ-type node with its corresponding IN-type node. This is sort of the opposite of ConvertInvalidInExpressions, which converts EQs to INs when the types of the children are not appropriate for use in a MatchFilter. Has no apparent pre-requisites.

Constructor Summary

Constructors

Constructor	Description
ConvertEqToIn()

Method Summary

Modifier and Type	Method	Description
static FilterDescriptor	execute(FilterDescriptor descriptor)
FilterDescriptor	onEqual(FilterDescriptor descriptor)
FilterDescriptor	onEqualIgnoreCase(FilterDescriptor descriptor)
FilterDescriptor	onNotEqual(FilterDescriptor descriptor)
FilterDescriptor	onNotEqualIgnoreCase(FilterDescriptor descriptor)

Methods inherited from class com.illumon.iris.web.shared.ast.ReplacingVisitor

onAnd, onContains, onContainsIgnoreCase, onGreaterThan, onGreaterThanOrEqualTo, onIn, onInIgnoreCase, onInvoke, onIsNull, onLessThan, onLessThanOrEqualTo, onLiteral, onNot, onNotIn, onNotInIgnoreCase, onOr, onPattern, onPatternIgnoreCase, onReference, onSearch, visit, visitChildren

Methods inherited from class java.lang.Object

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

Constructor Details

ConvertEqToIn

public ConvertEqToIn()

Method Details

execute

public static FilterDescriptor execute(FilterDescriptor descriptor)

onEqual

public FilterDescriptor onEqual(FilterDescriptor descriptor)

Overrides:

onEqual in class ReplacingVisitor

onEqualIgnoreCase

public FilterDescriptor onEqualIgnoreCase(FilterDescriptor descriptor)

Overrides:

onEqualIgnoreCase in class ReplacingVisitor

onNotEqual

public FilterDescriptor onNotEqual(FilterDescriptor descriptor)

Overrides:

onNotEqual in class ReplacingVisitor

onNotEqualIgnoreCase

public FilterDescriptor onNotEqualIgnoreCase(FilterDescriptor descriptor)

Overrides:

onNotEqualIgnoreCase in class ReplacingVisitor