Package org.apache.calcite.rel.rules

Class SingleValuesOptimizationRules

java.lang.Object

org.apache.calcite.rel.rules.SingleValuesOptimizationRules

public abstract class SingleValuesOptimizationRules
extends Object

Collection of rules which simplify joins which have one of their input as constant relations Values that produce a single row.

Conventionally, the way to represent a single row constant relational expression is with a Values that has one tuple.

See Also:

• LogicalValues.createOneRow(org.apache.calcite.plan.RelOptCluster)

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
protected static class	SingleValuesOptimizationRules.PruneSingleValueRule	Abstract class for all the SingleValuesOptimizationRules.

Field Summary

Fields

Modifier and Type	Field	Description
static final RelOptRule	JOIN_LEFT_INSTANCE
static final RelOptRule	JOIN_LEFT_PROJECT_INSTANCE
static final RelOptRule	JOIN_RIGHT_INSTANCE
static final RelOptRule	JOIN_RIGHT_PROJECT_INSTANCE

Constructor Summary

Constructors

Constructor	Description
SingleValuesOptimizationRules()

Method Summary

Methods inherited from class java.lang.Object

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

Field Details

JOIN_LEFT_INSTANCE

public static final RelOptRule JOIN_LEFT_INSTANCE

JOIN_RIGHT_INSTANCE

public static final RelOptRule JOIN_RIGHT_INSTANCE

JOIN_LEFT_PROJECT_INSTANCE

public static final RelOptRule JOIN_LEFT_PROJECT_INSTANCE

JOIN_RIGHT_PROJECT_INSTANCE

public static final RelOptRule JOIN_RIGHT_PROJECT_INSTANCE

Constructor Details

SingleValuesOptimizationRules

public SingleValuesOptimizationRules()