com.facebook.presto.hive.rule

Class HiveParquetDereferencePushDown

java.lang.Object

com.facebook.presto.parquet.rule.ParquetDereferencePushDown

com.facebook.presto.hive.rule.HiveParquetDereferencePushDown

All Implemented Interfaces:

ConnectorPlanOptimizer

public class HiveParquetDereferencePushDown
extends ParquetDereferencePushDown

Extending Parquet dereference pushdown rule to work with Hive connector.

Constructor Summary

Constructors

Constructor and Description
HiveParquetDereferencePushDown(HiveTransactionManager transactionManager, RowExpressionService rowExpressionService)

Method Summary

Modifier and Type	Method and Description
protected ColumnHandle	createSubfieldColumnHandle(ColumnHandle baseColumnHandle, Subfield subfield, Type subfieldDataType, String subfieldColumnName)
protected String	getColumnName(ColumnHandle columnHandle)
protected boolean	isParquetDereferenceEnabled(ConnectorSession session, TableHandle tableHandle)

Methods inherited from class com.facebook.presto.parquet.rule.ParquetDereferencePushDown

optimize

Methods inherited from class java.lang.Object

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

Constructor Detail

HiveParquetDereferencePushDown

public HiveParquetDereferencePushDown(HiveTransactionManager transactionManager,
                                      RowExpressionService rowExpressionService)

Method Detail

isParquetDereferenceEnabled

protected boolean isParquetDereferenceEnabled(ConnectorSession session,
                                              TableHandle tableHandle)

Specified by:

isParquetDereferenceEnabled in class ParquetDereferencePushDown

getColumnName

protected String getColumnName(ColumnHandle columnHandle)

Specified by:

getColumnName in class ParquetDereferencePushDown

createSubfieldColumnHandle

protected ColumnHandle createSubfieldColumnHandle(ColumnHandle baseColumnHandle,
                                                  Subfield subfield,
                                                  Type subfieldDataType,
                                                  String subfieldColumnName)

Specified by:

createSubfieldColumnHandle in class ParquetDereferencePushDown