Package org.apache.iotdb.db.mpp.execution.operator.process.join.merge

Class SingleColumnMerger

java.lang.Object

org.apache.iotdb.db.mpp.execution.operator.process.join.merge.SingleColumnMerger

All Implemented Interfaces:

ColumnMerger

public class SingleColumnMerger
extends java.lang.Object
implements ColumnMerger

only has one input column

Constructor Summary

Constructors

Constructor	Description
SingleColumnMerger(InputLocation location, TimeComparator comparator)

Method Summary

Modifier and Type	Method	Description
void	mergeColumn(org.apache.iotdb.tsfile.read.common.block.TsBlock[] inputTsBlocks, int[] inputIndex, int[] updatedInputIndex, long currentTime, org.apache.iotdb.tsfile.read.common.block.column.ColumnBuilder columnBuilder)	merge columns belonging to same series into one column, merge just one row whose time is equal to currentTime
void	mergeColumn(org.apache.iotdb.tsfile.read.common.block.TsBlock[] inputTsBlocks, int[] inputIndex, int[] updatedInputIndex, org.apache.iotdb.tsfile.read.common.block.column.TimeColumnBuilder timeBuilder, long currentEndTime, org.apache.iotdb.tsfile.read.common.block.column.ColumnBuilder columnBuilder)	merge columns belonging to same series into one column, merge until each input column's time is larger than currentEndTime
static void	mergeOneColumn(org.apache.iotdb.tsfile.read.common.block.TsBlock[] inputTsBlocks, int[] inputIndex, int[] updatedInputIndex, long currentTime, org.apache.iotdb.tsfile.read.common.block.column.ColumnBuilder columnBuilder, InputLocation location)
static void	mergeOneColumn(org.apache.iotdb.tsfile.read.common.block.TsBlock[] inputTsBlocks, int[] inputIndex, int[] updatedInputIndex, org.apache.iotdb.tsfile.read.common.block.column.TimeColumnBuilder timeBuilder, long currentEndTime, org.apache.iotdb.tsfile.read.common.block.column.ColumnBuilder columnBuilder, InputLocation location, TimeComparator comparator)

Methods inherited from class java.lang.Object

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

Constructor Detail

SingleColumnMerger

public SingleColumnMerger(InputLocation location,
                          TimeComparator comparator)

Method Detail

mergeColumn

public void mergeColumn(org.apache.iotdb.tsfile.read.common.block.TsBlock[] inputTsBlocks,
                        int[] inputIndex,
                        int[] updatedInputIndex,
                        org.apache.iotdb.tsfile.read.common.block.column.TimeColumnBuilder timeBuilder,
                        long currentEndTime,
                        org.apache.iotdb.tsfile.read.common.block.column.ColumnBuilder columnBuilder)

Description copied from interface: ColumnMerger

merge columns belonging to same series into one column, merge until each input column's time is larger than currentEndTime

Specified by:

mergeColumn in interface ColumnMerger

Parameters:

inputTsBlocks - all source TsBlocks, some of which will contain source column

inputIndex - start index for each source TsBlock and size of it is equal to inputTsBlocks, we should only read from this array and not update it because others will use the start index value in inputIndex array

updatedInputIndex - current index for each source TsBlock after merging

timeBuilder - result time column, which is already generated and used to indicate each row's timestamp

currentEndTime - merge until each input column's time is larger than currentEndTime

columnBuilder - used to write merged value into

mergeOneColumn

public static void mergeOneColumn(org.apache.iotdb.tsfile.read.common.block.TsBlock[] inputTsBlocks,
                                  int[] inputIndex,
                                  int[] updatedInputIndex,
                                  org.apache.iotdb.tsfile.read.common.block.column.TimeColumnBuilder timeBuilder,
                                  long currentEndTime,
                                  org.apache.iotdb.tsfile.read.common.block.column.ColumnBuilder columnBuilder,
                                  InputLocation location,
                                  TimeComparator comparator)

mergeColumn

public void mergeColumn(org.apache.iotdb.tsfile.read.common.block.TsBlock[] inputTsBlocks,
                        int[] inputIndex,
                        int[] updatedInputIndex,
                        long currentTime,
                        org.apache.iotdb.tsfile.read.common.block.column.ColumnBuilder columnBuilder)

Description copied from interface: ColumnMerger

merge columns belonging to same series into one column, merge just one row whose time is equal to currentTime

Specified by:

mergeColumn in interface ColumnMerger

Parameters:

inputTsBlocks - all source TsBlocks, some of which will contain source column

inputIndex - start index for each source TsBlock and size of it is equal to inputTsBlocks, we should only read from this array and not update it because others will use the start index value in inputIndex array

updatedInputIndex - current index for each source TsBlock after merging

currentTime - merge just one row whose time is equal to currentTime

columnBuilder - used to write merged value into

mergeOneColumn

public static void mergeOneColumn(org.apache.iotdb.tsfile.read.common.block.TsBlock[] inputTsBlocks,
                                  int[] inputIndex,
                                  int[] updatedInputIndex,
                                  long currentTime,
                                  org.apache.iotdb.tsfile.read.common.block.column.ColumnBuilder columnBuilder,
                                  InputLocation location)