org.apache.calcite.rel.rules

Interface ReduceExpressionsRule.Config

All Superinterfaces:

RelRule.Config

All Known Subinterfaces:

ReduceExpressionsRule.CalcReduceExpressionsRule.CalcReduceExpressionsRuleConfig, ReduceExpressionsRule.FilterReduceExpressionsRule.FilterReduceExpressionsRuleConfig, ReduceExpressionsRule.JoinReduceExpressionsRule.JoinReduceExpressionsRuleConfig, ReduceExpressionsRule.ProjectReduceExpressionsRule.ProjectReduceExpressionsRuleConfig, ReduceExpressionsRule.WindowReduceExpressionsRule.WindowReduceExpressionsRuleConfig

Enclosing class:

ReduceExpressionsRule<C extends ReduceExpressionsRule.Config>

public static interface ReduceExpressionsRule.Config
extends RelRule.Config

Rule configuration.

Method Summary

Modifier and Type	Method and Description
default boolean	matchNullability() Whether to add a CAST when a nullable expression reduces to a NOT NULL literal.
ReduceExpressionsRule<?>	toRule() Creates a rule that uses this configuration.
default boolean	treatDynamicCallsAsConstant() Whether to treat dynamic functions as constants.
ReduceExpressionsRule.Config	withMatchNullability(boolean matchNullability) Sets matchNullability().
default ReduceExpressionsRule.Config	withOperandFor(Class<? extends RelNode> relClass) Defines an operand tree for the given classes.
ReduceExpressionsRule.Config	withTreatDynamicCallsAsConstant(boolean treatDynamicCallsAsConstant) Sets treatDynamicCallsAsConstant().

Methods inherited from interface org.apache.calcite.plan.RelRule.Config

as, description, operandSupplier, relBuilderFactory, withDescription, withOperandSupplier, withRelBuilderFactory

Method Detail

toRule

ReduceExpressionsRule<?> toRule()

Description copied from interface: RelRule.Config

Creates a rule that uses this configuration. Sub-class must override.

Specified by:

toRule in interface RelRule.Config

matchNullability

@Value.Default
default boolean matchNullability()

Whether to add a CAST when a nullable expression reduces to a NOT NULL literal.

withMatchNullability

ReduceExpressionsRule.Config withMatchNullability(boolean matchNullability)

Sets matchNullability().

treatDynamicCallsAsConstant

@Value.Default
default boolean treatDynamicCallsAsConstant()

Whether to treat dynamic functions as constants.

When false (the default), calls to dynamic functions (e.g. USER) are not reduced. When true, calls to dynamic functions are treated as a constant, and reduced.

withTreatDynamicCallsAsConstant

ReduceExpressionsRule.Config withTreatDynamicCallsAsConstant(boolean treatDynamicCallsAsConstant)

Sets treatDynamicCallsAsConstant().

withOperandFor

default ReduceExpressionsRule.Config withOperandFor(Class<? extends RelNode> relClass)

Defines an operand tree for the given classes.