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:

com.facebook.presto.spi.ConnectorPlanOptimizer

public class HiveParquetDereferencePushDown
extends com.facebook.presto.parquet.rule.ParquetDereferencePushDown

Extending Parquet dereference pushdown rule to work with Hive connector.

Constructor Summary

Constructors

Constructor and Description
HiveParquetDereferencePushDown(HiveTransactionManager transactionManager, com.facebook.presto.spi.relation.RowExpressionService rowExpressionService)

Method Summary

Modifier and Type	Method and Description
protected com.facebook.presto.spi.ColumnHandle	createSubfieldColumnHandle(com.facebook.presto.spi.ColumnHandle baseColumnHandle, com.facebook.presto.common.Subfield subfield, com.facebook.presto.common.type.Type subfieldDataType, String subfieldColumnName)
protected String	getColumnName(com.facebook.presto.spi.ColumnHandle columnHandle)
protected boolean	isParquetDereferenceEnabled(com.facebook.presto.spi.ConnectorSession session, com.facebook.presto.spi.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,
                                      com.facebook.presto.spi.relation.RowExpressionService rowExpressionService)

Method Detail

isParquetDereferenceEnabled

protected boolean isParquetDereferenceEnabled(com.facebook.presto.spi.ConnectorSession session,
                                              com.facebook.presto.spi.TableHandle tableHandle)

Specified by:

isParquetDereferenceEnabled in class com.facebook.presto.parquet.rule.ParquetDereferencePushDown

getColumnName

protected String getColumnName(com.facebook.presto.spi.ColumnHandle columnHandle)

Specified by:

getColumnName in class com.facebook.presto.parquet.rule.ParquetDereferencePushDown

createSubfieldColumnHandle

protected com.facebook.presto.spi.ColumnHandle createSubfieldColumnHandle(com.facebook.presto.spi.ColumnHandle baseColumnHandle,
                                                                          com.facebook.presto.common.Subfield subfield,
                                                                          com.facebook.presto.common.type.Type subfieldDataType,
                                                                          String subfieldColumnName)

Specified by:

createSubfieldColumnHandle in class com.facebook.presto.parquet.rule.ParquetDereferencePushDown