edu.unh.sdb.datasource

Class CompositeDataSource

java.lang.Object

edu.unh.sdb.datasource.DataCollection

edu.unh.sdb.datasource.DataSource

edu.unh.sdb.datasource.CompositeDataSource

All Implemented Interfaces:

Indexable

Direct Known Subclasses:

AttributeJoinDataSource, BlockedDataSource, OverlapBlockedDataSource

public abstract class CompositeDataSource
extends DataSource

This class is a parent class for AttributeJoinDataSoure and BlockedDataSource. It provides access methods concerned with arrays of ComponentInfo objects.

Field Summary

Fields

Modifier and Type	Field and Description
protected ComponentInfo[]	componentInfos Information for every component.

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

Constructors

Constructor and Description
CompositeDataSource(java.lang.String aname, ComponentInfo[] cinfo) Create a CompositeDataSource defined by the ComponentInfo array.

Method Summary

Methods

Modifier and Type	Method and Description
void	activate() Calls the activate method of all component datasources.
protected abstract boolean	check(ComponentInfo[] cpnInfo) Check the array of componentInfo
void	deactivate() Calls the deactivate method of all component datasources.
boolean	equals(java.lang.Object obj) Return true if parameter equals this object, false otherwise.
ISBounds[]	getComponentBounds() Returns the array of component ISBoundses corresponding to the array this.componentInfos[].
DataSource[]	getComponentDataSources() Returns the array of component DataSources that are corresponding to the array this.componentInfos[].
int[][]	getComponentFieldIDs() Returns the array of componentFieldNumbers for each ComponentInfo's FieldIDMapper.
ComponentInfo[]	getComponentInfos() Returns the reference to the array this.componentInfos[].
ISBounds[]	getCompositeBounds() Returns the array of destination ISBoundses corresponding to the array this.componentInfos[].
int[][]	getCompositeFieldIDs() Returns the array of compositeFieldNumbers for each ComponentInfo's FieldIDMapper.
FieldIDMapper[]	getFIDMappers() Returns the array of FieldIDMappers that are corresponding to the array this.componentInfos[].
protected abstract void	initializeComponents(ComponentInfo[] cpnInfo)
static void	main(java.lang.String[] args)
java.lang.String	toString() Print the data members of the DataSource in an easy to read fashion.
void	useBytesOnly() When this method is called, the subblock methods of this collection will read data as bytes, without performing any type conversion.

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, getFDLDescriptor, getMetadataCollection, getName, getStatistics, getValues, isActivated, setMetadataCollection, 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, datum, datum, datum, dim, getAttributeNames, 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, getUpperBoundsArray, getValues, getValuesByAttribute, getValuesByPoint, longVolume, setAxisOrdering, setBounds, setRecordDescriptor, size, subblock, subblock, subblock, subblock, subblock, subblock, subblock, subblock, subblock, subblock, subblock, subblock, volume

Methods inherited from class java.lang.Object

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

Field Detail

componentInfos

protected ComponentInfo[] componentInfos

Information for every component.

Constructor Detail

CompositeDataSource

public CompositeDataSource(java.lang.String aname,
                   ComponentInfo[] cinfo)

Create a CompositeDataSource defined by the ComponentInfo array.

Method Detail

initializeComponents

protected abstract void initializeComponents(ComponentInfo[] cpnInfo)

check

protected abstract boolean check(ComponentInfo[] cpnInfo)

Check the array of componentInfo

getComponentInfos

public ComponentInfo[] getComponentInfos()

Returns the reference to the array this.componentInfos[].

useBytesOnly

public void useBytesOnly()

When this method is called, the subblock methods of this collection will read data as bytes, without performing any type conversion. This is meant to be used by servers, since they send raw bytes over the network anyway, and any conversion is wasted effort.

Overrides:

useBytesOnly in class DataCollection

activate

public void activate()

Calls the activate method of all component datasources.

Overrides:

activate in class DataSource

deactivate

public void deactivate()

Calls the deactivate method of all component datasources.

Overrides:

deactivate in class DataSource

getComponentDataSources

public DataSource[] getComponentDataSources()

Returns the array of component DataSources that are corresponding to the array this.componentInfos[]. The DataSources may or may not be distinct.

getFIDMappers

public FieldIDMapper[] getFIDMappers()

Returns the array of FieldIDMappers that are corresponding to the array this.componentInfos[].

getComponentFieldIDs

public int[][] getComponentFieldIDs()

Returns the array of componentFieldNumbers for each ComponentInfo's FieldIDMapper.

getCompositeFieldIDs

public int[][] getCompositeFieldIDs()

Returns the array of compositeFieldNumbers for each ComponentInfo's FieldIDMapper.

getComponentBounds

public ISBounds[] getComponentBounds()

Returns the array of component ISBoundses corresponding to the array this.componentInfos[].

getCompositeBounds

public ISBounds[] getCompositeBounds()

Returns the array of destination ISBoundses corresponding to the array this.componentInfos[].

equals

public boolean equals(java.lang.Object obj)

Return true if parameter equals this object, false otherwise.

Overrides:

equals in class DataSource

toString

public java.lang.String toString()

Print the data members of the DataSource in an easy to read fashion.

Overrides:

toString in class DataSource

main

public static void main(java.lang.String[] args)