Package com.apple.foundationdb.record.query.plan.temp.rules

Class FilterWithElementWithComparisonRule

java.lang.Object

com.apple.foundationdb.record.query.plan.temp.PlannerRule<LogicalFilterExpression>

com.apple.foundationdb.record.query.plan.temp.rules.FilterWithElementWithComparisonRule

@API(EXPERIMENTAL)
public class FilterWithElementWithComparisonRule
extends PlannerRule<LogicalFilterExpression>

A rewrite rule that turns a logical filter on the results of a full scan (without a sort) into an index scan on a compatibly ordered index.

 
      +----------------------------+                               +-------------------------------------+
      |                            |                               |                                     |
      |  LogicalFilterExpression   |                               |  IndexEntrySourceScanExpression     |
      |          element <>= val   |                               |                        scan ranges  |
      |                            |                               |                                     |
      +-------------+--------------+                               +-------------------------------------+
                    |                    +------------------>
                    |
                    |
     +--------------+----------------+
     |                               |
     |  FullUnorderedScanExpression  |
     |                               |
     +-------------------------------+
 
 

Like the RecordQueryPlanner

Constructor Summary

Constructors

Constructor	Description
FilterWithElementWithComparisonRule()

Method Summary

Modifier and Type	Method	Description
void	onMatch(PlannerRuleCall call)

Methods inherited from class com.apple.foundationdb.record.query.plan.temp.PlannerRule

getMatcher, getRootOperator, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

FilterWithElementWithComparisonRule

public FilterWithElementWithComparisonRule()

Method Detail

onMatch

public void onMatch(@Nonnull
                    PlannerRuleCall call)

Specified by:

onMatch in class PlannerRule<LogicalFilterExpression>