org.compass.gps.device.support.parallel
Class SubIndexIndexEntitiesPartitioner

java.lang.Object
  org.compass.gps.device.support.parallel.SubIndexIndexEntitiesPartitioner

All Implemented Interfaces:

IndexEntitiesPartitioner

public class SubIndexIndexEntitiesPartitioner
extends Object
implements IndexEntitiesPartitioner

Partitions a list of IndexEntity into several groups of lists of index entities based on their sub indexes. Index entities that share the same sub index will be grouped into the same group since parallel indexing is best performed based on the sub index as Compass perfoms sub index level locking during indexing.

Author:

kimchy

Constructor Summary

SubIndexIndexEntitiesPartitioner()

Method Summary

IndexEntity[][]

partition(IndexEntity[] entities) Partitions a list of index entities into several groups of lists of index entities that can be indexed in parallel.

Methods inherited from class java.lang.Object

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

Constructor Detail

SubIndexIndexEntitiesPartitioner

public SubIndexIndexEntitiesPartitioner()

Method Detail

partition

public IndexEntity[][] partition(IndexEntity[] entities)
                          throws CompassGpsException

Description copied from interface: IndexEntitiesPartitioner

Partitions a list of index entities into several groups of lists of index entities that can be indexed in parallel.

Specified by:

partition in interface IndexEntitiesPartitioner

Parameters:

entities - The index entities to partition

Returns:

Groups of list of entities that can be indexed in

Throws:

CompassGpsException