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 and 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

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

description, operands

Method Summary

Methods

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

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

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

Methods inherited from class java.lang.Object

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

Field Detail

PREDICATE

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

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.

Method Detail

apply

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