Package io.trino.plugin.hive

Class HiveUpdateProcessor

java.lang.Object

io.trino.plugin.hive.HiveUpdateProcessor

public class HiveUpdateProcessor
extends Object

Constructor Summary

Constructors

Constructor	Description
HiveUpdateProcessor(List<HiveColumnHandle> allDataColumns, List<HiveColumnHandle> updatedColumns)

Method Summary

Modifier and Type	Method	Description
Block	createMergedColumnsBlock(Page page, List<Integer> columnValueAndRowIdChannels)
Block	createUpdateRowBlock(Page page, List<Integer> nonUpdatedChannelNumbers, OrcDeletedRows.MaskDeletedRowsFunction maskDeletedRowsFunction)	Create a RowBlock containing four children: the three ACID columns - - originalTransaction, rowId, bucket - - and a RowBlock containing all the data columns not changed by the UPDATE statement.
RowBlock	getAcidRowBlock(Page page, List<Integer> columnValueAndRowIdChannels)
List<HiveColumnHandle>	getAllDataColumns()
List<HiveColumnHandle>	getNonUpdatedColumns()
List<HiveColumnHandle>	getUpdatedColumns()
static HiveColumnHandle	getUpdateRowIdColumnHandle(List<HiveColumnHandle> nonUpdatedColumnHandles)	Return the column UPDATE column handle, which depends on the 3 ACID columns as well as the non-updated columns.
List<Integer>	makeDependencyChannelNumbers(List<HiveColumnHandle> dependencyColumns)
List<Integer>	makeNonUpdatedSourceChannels(List<HiveColumnHandle> dependencyColumns)
List<HiveColumnHandle>	mergeWithNonUpdatedColumns(List<HiveColumnHandle> updateDependencies)	Merge the non-updated columns with the update dependencies, in allDataColumns order, and finally add the rowId column as the last dependency.
Page	removeNonDependencyColumns(Page page, List<Integer> dependencyChannels)	Project expects the page to begin with the update dependencies, followed by the "rowId" column.

Methods inherited from class java.lang.Object

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

Constructor Detail

HiveUpdateProcessor

public HiveUpdateProcessor(List<HiveColumnHandle> allDataColumns,
                           List<HiveColumnHandle> updatedColumns)

Method Detail

getAllDataColumns

public List<HiveColumnHandle> getAllDataColumns()

getUpdatedColumns

public List<HiveColumnHandle> getUpdatedColumns()

getNonUpdatedColumns

public List<HiveColumnHandle> getNonUpdatedColumns()

mergeWithNonUpdatedColumns

public List<HiveColumnHandle> mergeWithNonUpdatedColumns(List<HiveColumnHandle> updateDependencies)

Merge the non-updated columns with the update dependencies, in allDataColumns order, and finally add the rowId column as the last dependency.

createUpdateRowBlock

public Block createUpdateRowBlock(Page page,
                                  List<Integer> nonUpdatedChannelNumbers,
                                  OrcDeletedRows.MaskDeletedRowsFunction maskDeletedRowsFunction)

Create a RowBlock containing four children: the three ACID columns - - originalTransaction, rowId, bucket - - and a RowBlock containing all the data columns not changed by the UPDATE statement.

removeNonDependencyColumns

public Page removeNonDependencyColumns(Page page,
                                       List<Integer> dependencyChannels)

Project expects the page to begin with the update dependencies, followed by the "rowId" column. Remove columns from the page if they are not update dependencies.

getUpdateRowIdColumnHandle

public static HiveColumnHandle getUpdateRowIdColumnHandle(List<HiveColumnHandle> nonUpdatedColumnHandles)

Return the column UPDATE column handle, which depends on the 3 ACID columns as well as the non-updated columns.

getAcidRowBlock

public RowBlock getAcidRowBlock(Page page,
                                List<Integer> columnValueAndRowIdChannels)

createMergedColumnsBlock

public Block createMergedColumnsBlock(Page page,
                                      List<Integer> columnValueAndRowIdChannels)

Parameters:

page - The first block in the page is a RowBlock, containing the three ACID columns - - originalTransaction, bucket and rowId - - plus a RowBlock containing the values of non-updated columns. The remaining blocks are the values of the updated columns, whose offsets given by columnValueAndRowIdChannels

Returns:

The RowBlock for updated and non-updated columns

makeDependencyChannelNumbers

public List<Integer> makeDependencyChannelNumbers(List<HiveColumnHandle> dependencyColumns)

makeNonUpdatedSourceChannels

public List<Integer> makeNonUpdatedSourceChannels(List<HiveColumnHandle> dependencyColumns)