org.apache.drill.exec.store.mapr.db

Class MapRDBPushProjectIntoScan

java.lang.Object

org.apache.calcite.plan.RelOptRule

org.apache.drill.exec.store.StoragePluginOptimizerRule

org.apache.drill.exec.store.mapr.db.MapRDBPushProjectIntoScan

public abstract class MapRDBPushProjectIntoScan
extends StoragePluginOptimizerRule

Push a physical Project into Scan. Currently, this rule is only doing projection pushdown for MapRDB-JSON tables since it was needed for the secondary index feature which only applies to Json tables. For binary tables, note that the DrillPushProjectIntoScanRule is still applicable during the logical planning phase.

Field Summary

Fields

Modifier and Type	Field and Description
static StoragePluginOptimizerRule	PROJECT_ON_SCAN

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

description, operands, relBuilderFactory

Method Summary

Modifier and Type	Method and Description
protected void	doPushProjectIntoGroupScan(org.apache.calcite.plan.RelOptRuleCall call, ProjectPrel project, ScanPrel scan, JsonTableGroupScan groupScan)

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

PROJECT_ON_SCAN

public static final StoragePluginOptimizerRule PROJECT_ON_SCAN

Method Detail

doPushProjectIntoGroupScan

protected void doPushProjectIntoGroupScan(org.apache.calcite.plan.RelOptRuleCall call,
                                          ProjectPrel project,
                                          ScanPrel scan,
                                          JsonTableGroupScan groupScan)