edu.unh.sdb.datasource
Class StatsDataSource

java.lang.Object
  edu.unh.sdb.datasource.DataCollection
      edu.unh.sdb.datasource.DataSource
          edu.unh.sdb.datasource.PhysicalDataSource
              edu.unh.sdb.datasource.StatsDataSource

All Implemented Interfaces:

Indexable

public class StatsDataSource
extends PhysicalDataSource

Field Summary

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

BIG_ENDIAN, bufferBounds, bufferDimension, bufferSteps, byteBuffers, directMemoryLimit, endian, LITTLE_ENDIAN, maxBufferSize, maxGapSize, readCounter, readLength, url

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

StatsDataSource()

StatsDataSource(FDLDescriptor fdld)

StatsDataSource(java.lang.String name, RecordDescriptor rd, ISBounds isb, AxisOrdering ordering, java.lang.String URL)

Method Summary

void	activate() The DataSource will perform any initialization required in order to begin reading/processing data.
void	datum(Datum dtm, IndexSpaceID did, FieldIDMapper mp) Given an IndexSpaceID and FieldIDMapper, copy the values of the Datum at that position to the argument Datum.
void	deactivate() The DataSource will release any resources used during the readling or processing of data.
void	printStats()
void	subblock(DSBlockStencil stencil) Fill the datablocks specified as "active" in the DSBlockStencil.

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

allocateBuffer, allocateBuffer, allocateBuffer, allocateBuffer, allocateBuffer, allocateBuffer, allocateBuffer, allocateBuffer, allocateBuffer, deleteBuffer, deleteBuffer, deleteBuffers, equals, getBuffer, getBuffer, getBufferSize, getBufferSize, getByteOrder, getDataFileString, getMaxBufferSize, getReadCounter, getReadLength, getURL, initializeBuffers, isBigEndian, main, makeBestBuffer, resetReadCounter, setBufferByteOrder, setMaxBufferSize, setMaxGapSize, subblock, subblock, subblock, toString, toString

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, getName, getValues, isActivated

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, 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, useBytesOnly, volume

Methods inherited from class java.lang.Object

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

Constructor Detail

StatsDataSource

public StatsDataSource(java.lang.String name,
                       RecordDescriptor rd,
                       ISBounds isb,
                       AxisOrdering ordering,
                       java.lang.String URL)

StatsDataSource

public StatsDataSource(FDLDescriptor fdld)

StatsDataSource

public StatsDataSource()

Method Detail

activate

public void activate()

Description copied from class: DataSource

The DataSource will perform any initialization required in order to begin reading/processing data. It is important that all child classes call super.activate()

Overrides:

activate in class DataSource

deactivate

public void deactivate()

Description copied from class: PhysicalDataSource

The DataSource will release any resources used during the readling or processing of data. It is important that all child classes call super.deactivate()

Overrides:

deactivate in class PhysicalDataSource

printStats

public void printStats()

datum

public void datum(Datum dtm,
                  IndexSpaceID did,
                  FieldIDMapper mp)

Given an IndexSpaceID and FieldIDMapper, copy the values of the Datum at that position to the argument Datum. TODO Define error conditions

Specified by:

datum in interface Indexable

Specified by:

datum in class DataCollection

subblock

public void subblock(DSBlockStencil stencil)

Description copied from class: DataCollection

Fill the datablocks specified as "active" in the DSBlockStencil. This method is meant to save latency costs across a network by filling several datablocks with a single query.

Overrides:

subblock in class DataCollection