edu.unh.sdb.datasource
Class VRDataSource

java.lang.Object
  edu.unh.sdb.datasource.DataCollection
      edu.unh.sdb.datasource.DataSource
          edu.unh.sdb.datasource.VRDataSource

All Implemented Interfaces:

Indexable

public class VRDataSource
extends DataSource

Field Summary

protected VRIndexable

vrIndexable

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

VRDataSource(java.lang.String dsname, DataSource theSource)

Method Summary

void	activate() Activate this datasource
void	datum(Datum dtm, IndexSpaceID did) Return the Datum corresponding to the given IndexSpaceID.
void	datum(Datum dtm, IndexSpaceID did, FieldIDMapper mp) PBR: Return by reference the Datum corresponding to the given IndexSpaceID.
void	datum(Datum dtm, IndexSpaceID did, RecordSpec recSpec) PBR: Return by reference the Datum corresponding to the given IndexSpaceID.
Datum	datum(IndexSpaceID did) Return the Datum corresponding to the given IndexSpaceID.
Datum	datum(IndexSpaceID did, RecordSpec spec) Return the Datum corresponding to the given IndexSpaceID.
void	deactivate() The DataSource will release any resources used during the readling or processing of data.
boolean	decr() Decrease Resolution Level by 1
DataSource	getDataSource()
boolean	incr() Increase Resolution Level by 1
void	subblock(DataBlock theBlock, ISBounds dstBounds, ISBounds srcBounds) Reads a subblock defined by srcBounds into the region of the Datablock argument defined by dstBounds.
void	subblock(DataBlock theBlock, ISBounds dstBounds, ISBounds srcBounds, FieldIDMapper mp) Reads a subblock defined by srcBounds into the region of the Datablock argument defined by dstBounds.
void	subblock(DataBlock theBlock, ISBounds dstBounds, ISBounds srcBounds, RecordSpec spec) Reads a subblock defined by srcBounds into the region of the Datablock argument defined by dstBounds.
DataBlock	subblock(Datum[] d, ISBounds db)
DataBlock	subblock(ISBounds db) Returns a DataBlock that is a spatial subset of the DataSource.Override parent method for inefficiency.
DataBlock	subblock(ISBounds isb, RecordSpec spec) Returns a DataBlock that is an attribute projection of a spatial subset of the DataSource.

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, 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, useBytesOnly, volume

Methods inherited from class java.lang.Object

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

Field Detail

vrIndexable

protected VRIndexable vrIndexable

Constructor Detail

VRDataSource

public VRDataSource(java.lang.String dsname,
                    DataSource theSource)

Method Detail

activate

public void activate()

Activate this datasource

Overrides:

activate in class DataSource

deactivate

public void deactivate()

The DataSource will release any resources used during the readling or processing of data.

Overrides:

deactivate in class DataSource

datum

public void datum(Datum dtm,
                  IndexSpaceID did)

Return the Datum corresponding to the given IndexSpaceID. The Datum will only contain attributes specified by the RecordSpec argument.

Specified by:

datum in interface Indexable

Overrides:

datum in class DataCollection

datum

public Datum datum(IndexSpaceID did)

Return the Datum corresponding to the given IndexSpaceID.

Specified by:

datum in interface Indexable

Overrides:

datum in class DataCollection

datum

public Datum datum(IndexSpaceID did,
                   RecordSpec spec)

Return the Datum corresponding to the given IndexSpaceID. The Datum will only contain attributes specified by the RecordSpec argument.

Specified by:

datum in interface Indexable

Overrides:

datum in class DataCollection

datum

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

PBR: Return by reference the Datum corresponding to the given IndexSpaceID. Only datum fields referred to by the FieldIDMapper are modified.

Specified by:

datum in interface Indexable

Specified by:

datum in class DataCollection

datum

public void datum(Datum dtm,
                  IndexSpaceID did,
                  RecordSpec recSpec)

PBR: Return by reference the Datum corresponding to the given IndexSpaceID. Only datum fields referred to by the RecordSpec are modified.

Specified by:

datum in interface Indexable

Overrides:

datum in class DataCollection

subblock

public DataBlock subblock(Datum[] d,
                          ISBounds db)

subblock

public DataBlock subblock(ISBounds isb,
                          RecordSpec spec)

Returns a DataBlock that is an attribute projection of a spatial subset of the DataSource.

Specified by:

subblock in interface Indexable

Overrides:

subblock in class DataCollection

subblock

public DataBlock subblock(ISBounds db)

Returns a DataBlock that is a spatial subset of the DataSource.Override parent method for inefficiency.

Specified by:

subblock in interface Indexable

Overrides:

subblock in class DataCollection

subblock

public void subblock(DataBlock theBlock,
                     ISBounds dstBounds,
                     ISBounds srcBounds)

Reads a subblock defined by srcBounds into the region of the Datablock argument defined by dstBounds.

Specified by:

subblock in interface Indexable

Specified by:

subblock in class DataCollection

subblock

public void subblock(DataBlock theBlock,
                     ISBounds dstBounds,
                     ISBounds srcBounds,
                     FieldIDMapper mp)

Reads a subblock defined by srcBounds into the region of the Datablock argument defined by dstBounds. The FieldIDMapper argument determines the mapping between datums in the datasource and datums in the DataBlock.

Specified by:

subblock in interface Indexable

Specified by:

subblock in class DataCollection

subblock

public void subblock(DataBlock theBlock,
                     ISBounds dstBounds,
                     ISBounds srcBounds,
                     RecordSpec spec)

Reads a subblock defined by srcBounds into the region of the Datablock argument defined by dstBounds. The RecordSpec argument specifies a subset of the DataSource attributes to be written into the DataBlock datums.

Specified by:

subblock in interface Indexable

Overrides:

subblock in class DataCollection

incr

public boolean incr()

Increase Resolution Level by 1

decr

public boolean decr()

Decrease Resolution Level by 1

getDataSource

public DataSource getDataSource()