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

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

All Implemented Interfaces:

ParallelIndexExecutor

public class ConcurrentParallelIndexExecutor
extends Object
implements ParallelIndexExecutor

Executes the indexing process using sevearl threads based on the partitioned list of index entities.

By default (with maxThreads set to -1) creates N threads during the indexing process where N is the number of partitioned index entities groups (one therad per group). If maxThreads is set to a positive integer number, the index executor will use it as the number of threads to create, regardless of the number of partitioned entities groups.

Author:

kimchy

Constructor Summary

ConcurrentParallelIndexExecutor()
Constructs a new concurrent index executor with maxThreads defaults to -1.

ConcurrentParallelIndexExecutor(int maxThreads)
Constructs a new concurrent index executor with the given max threads.

Method Summary

void	performIndex(IndexEntity[][] entities, IndexEntitiesIndexer indexEntitiesIndexer, CompassGpsInterfaceDevice compassGps) Performs the indexing process using the provided index entities indexer.

Methods inherited from class java.lang.Object

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

Constructor Detail

ConcurrentParallelIndexExecutor

public ConcurrentParallelIndexExecutor()

Constructs a new concurrent index executor with maxThreads defaults to -1.

ConcurrentParallelIndexExecutor

public ConcurrentParallelIndexExecutor(int maxThreads)

Constructs a new concurrent index executor with the given max threads.

Parameters:

maxThreads - The number of threads to use or -1 for dynamic threads

Method Detail

performIndex

public void performIndex(IndexEntity[][] entities,
                         IndexEntitiesIndexer indexEntitiesIndexer,
                         CompassGpsInterfaceDevice compassGps)

Performs the indexing process using the provided index entities indexer. Creates a pool of N threads (if maxThreads is set to -1, N is the numer of entities groups, otherwise N is the number of maxThreads).

Specified by:

performIndex in interface ParallelIndexExecutor

Parameters:

entities - The partitioned index entities groups and index entities to index

indexEntitiesIndexer - The entities indexer to use

compassGps - Compass gps interface for meta information