Package com.illumon.iris.db.v2.join.dupcompact

Class CharDupCompactKernel

java.lang.Object

com.illumon.iris.db.v2.join.dupcompact.CharDupCompactKernel

All Implemented Interfaces:

DupCompactKernel, Context, SafeCloseable, AutoCloseable

public class CharDupCompactKernel
extends Object
implements DupCompactKernel

Method Summary

Modifier and Type	Method	Description
int	compactDuplicates(WritableChunk<? extends Attributes.Any> chunkToCompact, WritableLongChunk<Attributes.KeyIndices> keyIndices)	Remove all adjacent values from chunkToCompact, except the last value in any adjacent run.

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.illumon.iris.db.v2.sources.chunk.Context

close

Method Details

compactDuplicates

public int compactDuplicates(WritableChunk<? extends Attributes.Any> chunkToCompact,
 WritableLongChunk<Attributes.KeyIndices> keyIndices)

Description copied from interface: DupCompactKernel

Remove all adjacent values from chunkToCompact, except the last value in any adjacent run. The keyIndices are parallel to the chunkToCompact; and when a value is removed from chunkToCompact it is also removed from keyIndices Additionally, verify that the elements are properly ordered; returning the first position of an out of order element.

Specified by:

compactDuplicates in interface DupCompactKernel

Parameters:

chunkToCompact - the values to remove duplicates from

keyIndices - the key indices parallel to chunkToCompact

Returns:

the first position of an out-of-order element, or -1 if all elements are in order