org.apache.calcite.rel.rules

Class FilterProjectTransposeRule

java.lang.Object

org.apache.calcite.plan.RelOptRule

org.apache.calcite.plan.RelRule<FilterProjectTransposeRule.Config>

org.apache.calcite.rel.rules.FilterProjectTransposeRule

All Implemented Interfaces:

TransformationRule

@Value.Enclosing
public class FilterProjectTransposeRule
extends RelRule<FilterProjectTransposeRule.Config>
implements TransformationRule

Planner rule that pushes a Filter past a Project.

See Also:

CoreRules.FILTER_PROJECT_TRANSPOSE

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static interface	FilterProjectTransposeRule.Config Rule configuration.

Nested classes/interfaces inherited from class org.apache.calcite.plan.RelRule

RelRule.Done, RelRule.MatchHandler<R extends RelOptRule>, RelRule.OperandBuilder, RelRule.OperandDetailBuilder<R extends RelNode>, RelRule.OperandTransform

Nested classes/interfaces inherited from class org.apache.calcite.plan.RelOptRule

RelOptRule.ConverterRelOptRuleOperand

Field Summary

Fields inherited from class org.apache.calcite.plan.RelRule

config

Fields inherited from class org.apache.calcite.plan.RelOptRule

description, operands, relBuilderFactory

Constructor Summary

Constructors

Modifier	Constructor and Description
	FilterProjectTransposeRule(Class<? extends Filter> filterClass, Class<? extends Project> projectClass, boolean copyFilter, boolean copyProject, RelBuilderFactory relBuilderFactory) Deprecated.
	FilterProjectTransposeRule(Class<? extends Filter> filterClass, RelFactories.FilterFactory filterFactory, Class<? extends Project> projectClass, RelFactories.ProjectFactory projectFactory) Deprecated.
	FilterProjectTransposeRule(Class<F> filterClass, Predicate<? super F> filterPredicate, Class<P> projectClass, Predicate<? super P> projectPredicate, boolean copyFilter, boolean copyProject, RelBuilderFactory relBuilderFactory) Deprecated.
protected	FilterProjectTransposeRule(FilterProjectTransposeRule.Config config) Creates a FilterProjectTransposeRule.
protected	FilterProjectTransposeRule(RelOptRuleOperand operand, boolean copyFilter, boolean copyProject, RelBuilderFactory relBuilderFactory) Deprecated.

Method Summary

Modifier and Type	Method and Description
void	onMatch(RelOptRuleCall call) Receives notification about a rule match.

Methods inherited from class org.apache.calcite.plan.RelOptRule

any, convert, convert, convertList, convertOperand, convertOperand, equals, equals, getOperand, getOperands, getOutConvention, getOutTrait, hashCode, matches, none, operand, operand, operand, operand, operand, operandJ, operandJ, some, toString, unordered

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

FilterProjectTransposeRule

protected FilterProjectTransposeRule(FilterProjectTransposeRule.Config config)

Creates a FilterProjectTransposeRule.

FilterProjectTransposeRule

@Deprecated
public FilterProjectTransposeRule(Class<? extends Filter> filterClass,
                                              Class<? extends Project> projectClass,
                                              boolean copyFilter,
                                              boolean copyProject,
                                              RelBuilderFactory relBuilderFactory)

Deprecated.

Creates a FilterProjectTransposeRule.

Equivalent to the rule created by FilterProjectTransposeRule(Class, Predicate, Class, Predicate, boolean, boolean, RelBuilderFactory) with some default predicates that do not allow a filter to be pushed past the project if there is a correlation condition anywhere in the filter (since in some cases it can prevent a Correlate from being de-correlated).

FilterProjectTransposeRule

@Deprecated
public FilterProjectTransposeRule(Class<F> filterClass,
                                              Predicate<? super F> filterPredicate,
                                              Class<P> projectClass,
                                              Predicate<? super P> projectPredicate,
                                              boolean copyFilter,
                                              boolean copyProject,
                                              RelBuilderFactory relBuilderFactory)

Deprecated.

Creates a FilterProjectTransposeRule.

If copyFilter is true, creates the same kind of Filter as matched in the rule, otherwise it creates a Filter using the RelBuilder obtained by the relBuilderFactory. Similarly for copyProject.

Defining predicates for the Filter (using filterPredicate) and/or the Project (using projectPredicate allows making the rule more restrictive.

FilterProjectTransposeRule

@Deprecated
public FilterProjectTransposeRule(Class<? extends Filter> filterClass,
                                              RelFactories.FilterFactory filterFactory,
                                              Class<? extends Project> projectClass,
                                              RelFactories.ProjectFactory projectFactory)

Deprecated.

FilterProjectTransposeRule

@Deprecated
protected FilterProjectTransposeRule(RelOptRuleOperand operand,
                                                 boolean copyFilter,
                                                 boolean copyProject,
                                                 RelBuilderFactory relBuilderFactory)

Deprecated.

Method Detail

onMatch

public void onMatch(RelOptRuleCall call)

Description copied from class: RelOptRule

Receives notification about a rule match. At the time that this method is called, call.rels holds the set of relational expressions which match the operands to the rule; call.rels[0] is the root expression.

Typically a rule would check that the nodes are valid matches, creates a new expression, then calls back RelOptRuleCall.transformTo(org.apache.calcite.rel.RelNode, java.util.Map<org.apache.calcite.rel.RelNode, org.apache.calcite.rel.RelNode>, org.apache.calcite.plan.RelHintsPropagator) to register the expression.

Specified by:

onMatch in class RelOptRule

Parameters:

call - Rule call

See Also:

RelOptRule.matches(RelOptRuleCall)