edu.unh.sdb.datasource
Class ThreadedSliceCacheDataSource

java.lang.Object
  edu.unh.sdb.datasource.DataCollection
      edu.unh.sdb.datasource.DataSource
          edu.unh.sdb.datasource.CacheDataSource
              edu.unh.sdb.datasource.BlockCacheDataSource
                  edu.unh.sdb.datasource.ThreadedSliceCacheDataSource

All Implemented Interfaces:

Indexable

public class ThreadedSliceCacheDataSource
extends BlockCacheDataSource

Field Summary

Fields inherited from class edu.unh.sdb.datasource.DataSource

fdlDescriptor, isActivated, name, wsName

Fields inherited from class edu.unh.sdb.datasource.DataCollection

attributeOrder, axisOrdering, axisWeights, bounds, dataOrder, dimensionality, numAttributes, pointOrder, recordDesc

Constructor Summary

ThreadedSliceCacheDataSource(java.lang.String name, DataSource ds, int sliceAxis, IndexSpaceID blockDimensions)
Creates a ThreadedSliceCacheDataSource that caches the specified DataSource.

ThreadedSliceCacheDataSource(java.lang.String name, DataSource ds, ISBounds iterationSpace, int sliceAxis, IndexSpaceID blockDimensions)
Creates a ThreadedSliceCacheDataSource that caches the specified DataSource.

Method Summary

void	activate() Calls activate() for the underlying datasource, and creates the actual cache, which allocates memory for the CacheBlocks.
void	deactivate() Calls super.deactivate() for the underlying datasource, and waits for any lingering IO threads to terminate.
protected void	halt() Any lingering IO threads will have terminated after this method completes.

Methods inherited from class edu.unh.sdb.datasource.BlockCacheDataSource

getCacheBlockBounds, getCacheBlockBounds, getCacheBlockBounds, getCacheBlockBoundsIterator, getCacheBlockBoundsIterator, getCacheBlockDimensions, getCacheMemoryUsage

Methods inherited from class edu.unh.sdb.datasource.CacheDataSource

datum, datum, datum, getIterationSpace, getSource, subblock, subblock

Methods inherited from class edu.unh.sdb.datasource.DataSource

checkActivated, clearCache, copyBestID, create, create, create, createRemote, createRemote, createRemoteClient, createRemoteClient, createRemoteDataSource, createRemoteDataSource, createRemoteDataSourceUDP, createRemoteUDP, createRemoteUDP, dumpData, equals, getName, getValues, isActivated, main, toString, toString

Methods inherited from class edu.unh.sdb.datasource.DataCollection

byteSize, computeOffset, computeOffset, copyBounds, createDataBlock, createDataBlock, createDataBlock, createDatum, createDatum, createDatum, createDatum, createDatum, createDatum, datum, datum, datum, datum, dim, getAxisOrdering, getAxisWeight, getAxisWeights, getBounds, getByte, getBytes, getBytes, getBytes, getBytes, getBytes, getBytes, getBytesByAttribute, getBytesByAttribute, getBytesByPoint, getBytesByPoint, getDataOrder, getDimensionsArray, getDouble, getDoubles, getDoubles, getDoubles, getDoubles, getDoubles, getDoubles, getDoublesByAttribute, getDoublesByAttribute, getDoublesByPoint, getDoublesByPoint, getFloat, getFloats, getFloats, getFloats, getFloats, getFloats, getFloats, getFloatsByAttribute, getFloatsByAttribute, getFloatsByPoint, getFloatsByPoint, getInt, getInts, getInts, getInts, getInts, getInts, getInts, getIntsByAttribute, getIntsByAttribute, getIntsByPoint, getIntsByPoint, getLowerBoundsArray, getNumAttributes, getRecordDescriptor, getShort, getShorts, getShorts, getShorts, getShorts, getShorts, getShorts, getShortsByAttribute, getShortsByAttribute, getShortsByPoint, getShortsByPoint, getStorageType, getValues, getValuesByAttribute, getValuesByPoint, longVolume, setAxisOrdering, setBounds, setRecordDescriptor, size, subblock, subblock, subblock, subblock, subblock, subblock, subblock, subblock, subblock, subblock, useBytesOnly, volume

Methods inherited from class java.lang.Object

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

Constructor Detail

ThreadedSliceCacheDataSource

public ThreadedSliceCacheDataSource(java.lang.String name,
                                    DataSource ds,
                                    ISBounds iterationSpace,
                                    int sliceAxis,
                                    IndexSpaceID blockDimensions)

Creates a ThreadedSliceCacheDataSource that caches the specified DataSource. The blocks used have dimensions specified by the blockDimensions argument. The cacheDimensions argument specifies the dimensions of the array containing the blocks.

ThreadedSliceCacheDataSource

public ThreadedSliceCacheDataSource(java.lang.String name,
                                    DataSource ds,
                                    int sliceAxis,
                                    IndexSpaceID blockDimensions)

Creates a ThreadedSliceCacheDataSource that caches the specified DataSource. The blocks used have dimensions specified by the blockDimensions argument. The cacheDimensions argument specifies the dimensions of the array containing the blocks.

Method Detail

activate

public void activate()

Calls activate() for the underlying datasource, and creates the actual cache, which allocates memory for the CacheBlocks.

Overrides:

activate in class BlockCacheDataSource

deactivate

public void deactivate()

Calls super.deactivate() for the underlying datasource, and waits for any lingering IO threads to terminate.

Overrides:

deactivate in class CacheDataSource

halt

protected void halt()

Any lingering IO threads will have terminated after this method completes.