org.apache.druid.query.groupby.epinephelinae.vector

Class LongGroupByVectorColumnSelector

java.lang.Object

org.apache.druid.query.groupby.epinephelinae.vector.LongGroupByVectorColumnSelector

All Implemented Interfaces:

GroupByVectorColumnSelector

public class LongGroupByVectorColumnSelector
extends Object
implements GroupByVectorColumnSelector

Method Summary

Modifier and Type	Method and Description
int	getGroupingKeySize() Get the size in bytes of the key parts generated by this column.
void	writeKeys(org.apache.datasketches.memory.WritableMemory keySpace, int keySize, int keyOffset, int startRow, int endRow) Write key parts for this column, from startRow (inclusive) to endRow (exclusive), into keySpace starting at keyOffset.
void	writeKeyToResultRow(org.apache.datasketches.memory.Memory keyMemory, int keyOffset, ResultRow resultRow, int resultRowPosition) Write key parts for this column into a particular result row.

Methods inherited from class java.lang.Object

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

Method Detail

getGroupingKeySize

public int getGroupingKeySize()

Description copied from interface: GroupByVectorColumnSelector

Get the size in bytes of the key parts generated by this column.

Specified by:

getGroupingKeySize in interface GroupByVectorColumnSelector

writeKeys

public void writeKeys(org.apache.datasketches.memory.WritableMemory keySpace,
                      int keySize,
                      int keyOffset,
                      int startRow,
                      int endRow)

Description copied from interface: GroupByVectorColumnSelector

Write key parts for this column, from startRow (inclusive) to endRow (exclusive), into keySpace starting at keyOffset.

Specified by:

writeKeys in interface GroupByVectorColumnSelector

Parameters:

keySpace - key memory

keySize - size of the overall key (not just the part for this column)

keyOffset - starting position for the first key part within keySpace

startRow - starting row (inclusive) within the current vector

endRow - ending row (exclusive) within the current vector

writeKeyToResultRow

public void writeKeyToResultRow(org.apache.datasketches.memory.Memory keyMemory,
                                int keyOffset,
                                ResultRow resultRow,
                                int resultRowPosition)

Description copied from interface: GroupByVectorColumnSelector

Write key parts for this column into a particular result row.

Specified by:

writeKeyToResultRow in interface GroupByVectorColumnSelector

Parameters:

keyMemory - key memory

keyOffset - starting position for this key part within keyMemory

resultRow - result row to receive key parts

resultRowPosition - position within the result row for this key part