Package org.apache.calcite.rel.rules

Class ProjectTableScanRule

java.lang.Object

org.apache.calcite.plan.RelOptRule

org.apache.calcite.rel.rules.ProjectTableScanRule

public abstract class ProjectTableScanRule
extends RelOptRule

Planner rule that converts a Project on a TableScan of a ProjectableFilterableTable to a Bindables.BindableTableScan.

The INTERPRETER variant allows an intervening EnumerableInterpreter.

See Also:

FilterTableScanRule

Field Summary

Fields

Modifier and Type	Field	Description
static ProjectTableScanRule	INSTANCE	Rule that matches Project on TableScan.
static ProjectTableScanRule	INTERPRETER	Rule that matches Project on EnumerableInterpreter on TableScan.
static com.google.common.base.Predicate<TableScan>	PREDICATE	Deprecated.

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

description, operands, relBuilderFactory

Constructor Summary

Constructors

Constructor	Description
ProjectTableScanRule(RelOptRuleOperand operand, RelBuilderFactory relBuilderFactory, java.lang.String description)	Creates a ProjectTableScanRule.

Method Summary

Modifier and Type	Method	Description
protected void	apply(RelOptRuleCall call, Project project, TableScan scan)
protected static boolean	test(TableScan scan)

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

any, convert, convert, convertList, convertOperand, convertOperand, equals, equals, getOperand, getOperands, getOutConvention, getOutTrait, hashCode, matches, none, onMatch, 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

Field Detail

PREDICATE

@Deprecated
public static final com.google.common.base.Predicate<TableScan> PREDICATE

Deprecated.

INSTANCE

public static final ProjectTableScanRule INSTANCE

Rule that matches Project on TableScan.

INTERPRETER

public static final ProjectTableScanRule INTERPRETER

Rule that matches Project on EnumerableInterpreter on TableScan.

Constructor Detail

ProjectTableScanRule

public ProjectTableScanRule(RelOptRuleOperand operand,
                            RelBuilderFactory relBuilderFactory,
                            java.lang.String description)

Creates a ProjectTableScanRule.

Method Detail

test

protected static boolean test(TableScan scan)

apply

protected void apply(RelOptRuleCall call,
                     Project project,
                     TableScan scan)