com.facebook.presto.hive.rule

Class HiveFilterPushdown

java.lang.Object

com.facebook.presto.hive.rule.HiveFilterPushdown

All Implemented Interfaces:

ConnectorPlanOptimizer

public class HiveFilterPushdown
extends Object
implements ConnectorPlanOptimizer

Runs during both logical and physical phases of connector-aided plan optimization. In most cases filter pushdown will occur during logical phase. However, in cases when new filter is added between logical and physical phases, e.g. a filter on a join key from one side of a join is added to the other side, the new filter will get merged with the one already pushed down.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	HiveFilterPushdown.ConnectorPushdownFilterResult

Field Summary

Fields

Modifier and Type	Field and Description
protected FunctionMetadataManager	functionMetadataManager
protected StandardFunctionResolution	functionResolution
protected HivePartitionManager	partitionManager
protected RowExpressionService	rowExpressionService
protected HiveTransactionManager	transactionManager

Constructor Summary

Constructors

Constructor and Description
HiveFilterPushdown(HiveTransactionManager transactionManager, RowExpressionService rowExpressionService, StandardFunctionResolution functionResolution, HivePartitionManager partitionManager, FunctionMetadataManager functionMetadataManager)

Method Summary

Modifier and Type	Method and Description
protected HiveMetadata	getMetadata(TableHandle tableHandle)
PlanNode	optimize(PlanNode maxSubplan, ConnectorSession session, VariableAllocator variableAllocator, PlanNodeIdAllocator idAllocator)
static HiveFilterPushdown.ConnectorPushdownFilterResult	pushdownFilter(ConnectorSession session, ConnectorMetadata metadata, SemiTransactionalHiveMetastore metastore, RowExpressionService rowExpressionService, StandardFunctionResolution functionResolution, HivePartitionManager partitionManager, FunctionMetadataManager functionMetadataManager, ConnectorTableHandle tableHandle, RowExpression filter, Optional<ConnectorTableLayoutHandle> currentLayoutHandle)
protected HiveFilterPushdown.ConnectorPushdownFilterResult	pushdownFilter(ConnectorSession session, HiveMetadata metadata, ConnectorTableHandle tableHandle, RowExpression filter, Optional<ConnectorTableLayoutHandle> currentLayoutHandle)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

transactionManager

protected final HiveTransactionManager transactionManager

rowExpressionService

protected final RowExpressionService rowExpressionService

functionResolution

protected final StandardFunctionResolution functionResolution

partitionManager

protected final HivePartitionManager partitionManager

functionMetadataManager

protected final FunctionMetadataManager functionMetadataManager

Constructor Detail

HiveFilterPushdown

public HiveFilterPushdown(HiveTransactionManager transactionManager,
                          RowExpressionService rowExpressionService,
                          StandardFunctionResolution functionResolution,
                          HivePartitionManager partitionManager,
                          FunctionMetadataManager functionMetadataManager)

Method Detail

optimize

public PlanNode optimize(PlanNode maxSubplan,
                         ConnectorSession session,
                         VariableAllocator variableAllocator,
                         PlanNodeIdAllocator idAllocator)

Specified by:

optimize in interface ConnectorPlanOptimizer

pushdownFilter

protected HiveFilterPushdown.ConnectorPushdownFilterResult pushdownFilter(ConnectorSession session,
                                                                          HiveMetadata metadata,
                                                                          ConnectorTableHandle tableHandle,
                                                                          RowExpression filter,
                                                                          Optional<ConnectorTableLayoutHandle> currentLayoutHandle)

pushdownFilter

public static HiveFilterPushdown.ConnectorPushdownFilterResult pushdownFilter(ConnectorSession session,
                                                                              ConnectorMetadata metadata,
                                                                              SemiTransactionalHiveMetastore metastore,
                                                                              RowExpressionService rowExpressionService,
                                                                              StandardFunctionResolution functionResolution,
                                                                              HivePartitionManager partitionManager,
                                                                              FunctionMetadataManager functionMetadataManager,
                                                                              ConnectorTableHandle tableHandle,
                                                                              RowExpression filter,
                                                                              Optional<ConnectorTableLayoutHandle> currentLayoutHandle)

getMetadata

protected HiveMetadata getMetadata(TableHandle tableHandle)