edu.unh.sdb.datasource

Class DataSink

java.lang.Object

edu.unh.sdb.datasource.DataSink

Direct Known Subclasses:

OneDDataSink

public class DataSink
extends java.lang.Object

Field Summary

Fields

Modifier and Type	Field and Description
protected long[]	axisWeights
protected ISBounds	bounds
protected int	datumSize
protected int	dimensionality
protected java.lang.String	filename
protected int	numFields
protected AxisOrdering	ordering
protected java.io.RandomAccessFile	raFile
protected RecordDescriptor	recordDescriptor

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	DataSink(java.lang.String filename, RecordDescriptor rd)
	DataSink(java.lang.String filename, RecordDescriptor rd, ISBounds bounds)

Method Summary

Methods

Modifier and Type	Method and Description
void	activate()
protected void	close()
protected int	computeOffset(IndexSpaceID dsid) Map the IndexSpaceID to a single integer that serves as as an Datum offset into the physical file or network source.
protected int	computeOffset(int[] coordArray) Maps an n-dimensional array of coordinates to an Datum offset in file or array.
void	deactivate()
ISBounds	getBounds()
protected void	open()
void	write(Datum d, IndexSpaceID id)

Methods inherited from class java.lang.Object

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

Field Detail

raFile

protected java.io.RandomAccessFile raFile

filename

protected java.lang.String filename

axisWeights

protected long[] axisWeights

recordDescriptor

protected RecordDescriptor recordDescriptor

ordering

protected AxisOrdering ordering

bounds

protected ISBounds bounds

dimensionality

protected int dimensionality

numFields

protected int numFields

datumSize

protected int datumSize

Constructor Detail

DataSink

public DataSink(java.lang.String filename,
        RecordDescriptor rd,
        ISBounds bounds)

DataSink

protected DataSink(java.lang.String filename,
        RecordDescriptor rd)

Method Detail

getBounds

public ISBounds getBounds()

activate

public void activate()

deactivate

public void deactivate()

write

public void write(Datum d,
         IndexSpaceID id)

open

protected void open()

close

protected void close()

computeOffset

protected final int computeOffset(IndexSpaceID dsid)

Map the IndexSpaceID to a single integer that serves as as an Datum offset into the physical file or network source.

Parameters:

IndexSpaceID - dsid

Returns:

int

computeOffset

protected final int computeOffset(int[] coordArray)

Maps an n-dimensional array of coordinates to an Datum offset in file or array.

Parameters:

int[] - coordArray

Returns:

int