org.das2.client

Class StreamDataSetDescriptor

java.lang.Object

org.das2.dataset.DataSetDescriptor

org.das2.client.StreamDataSetDescriptor

All Implemented Interfaces:

Displayable

public class StreamDataSetDescriptor
extends DataSetDescriptor

Field Summary

Fields

Modifier and Type	Field and Description
protected StandardDataStreamSource	standardDataStreamSource

Fields inherited from class org.das2.dataset.DataSetDescriptor

properties

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	StreamDataSetDescriptor(java.util.Map properties) Creates a new instance of StreamDataSetDescriptor from the specified file
protected	StreamDataSetDescriptor(java.util.Map properties, boolean legacy)
	StreamDataSetDescriptor(StreamDescriptor sd, StandardDataStreamSource sdss)

Method Summary

Modifier and Type	Method and Description
protected DataSet	getDataSetFromStream(java.io.InputStream in, Datum start, Datum end, ProgressMonitor monitor)
protected DataSet	getDataSetImpl(Datum start, Datum end, Datum resolution, ProgressMonitor monitor) getDataSetImpl implements the getDataSet for this DataSetDescriptor implementation.
PacketDescriptor	getDefaultPacketDescriptor()
StandardDataStreamSource	getStandardDataStreamSource()
Units	getXUnits()
boolean	isRestrictedAccess()
boolean	isServerSideReduction()
protected byte[]	readBytes(java.io.InputStream in) Auxiliary method used by readDoubles(InputStream, Object, Datum, Datum); Read data for the given start and end dates and returns an array of bytes
protected void	setProperties(java.util.Map properties)
protected void	setProperties(java.util.Map properties, boolean legacy)
void	setServerSideReduction(boolean x)
void	setStandardDataStreamSource(StandardDataStreamSource sdss)
java.lang.String	toString()

Methods inherited from class org.das2.dataset.DataSetDescriptor

addDataSetUpdateListener, create, drawListIcon, fireDataSetUpdateEvent, getDataSet, getDataSetCache, getDataSetID, getListIcon, getListLabel, getProperty, removeDataSetUpdateListener, requestDataSet, requestDataSet, reset, setDefaultCaching

Methods inherited from class java.lang.Object

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

Field Detail

standardDataStreamSource

protected StandardDataStreamSource standardDataStreamSource

Constructor Detail

StreamDataSetDescriptor

protected StreamDataSetDescriptor(java.util.Map properties)

Creates a new instance of StreamDataSetDescriptor from the specified file

Parameters:

properties - the properties

StreamDataSetDescriptor

protected StreamDataSetDescriptor(java.util.Map properties,
                                  boolean legacy)

StreamDataSetDescriptor

public StreamDataSetDescriptor(StreamDescriptor sd,
                               StandardDataStreamSource sdss)

Method Detail

getXUnits

public Units getXUnits()

Specified by:

getXUnits in class DataSetDescriptor

Returns:

the x units of the DataSetDescriptor that parameterize the data. This is used to identify dataSet requests.

setStandardDataStreamSource

public void setStandardDataStreamSource(StandardDataStreamSource sdss)

getStandardDataStreamSource

public StandardDataStreamSource getStandardDataStreamSource()

setProperties

protected final void setProperties(java.util.Map properties,
                                   boolean legacy)

setProperties

protected final void setProperties(java.util.Map properties)

Overrides:

setProperties in class DataSetDescriptor

readBytes

protected byte[] readBytes(java.io.InputStream in)
                    throws DasException

Auxiliary method used by readDoubles(InputStream, Object, Datum, Datum); Read data for the given start and end dates and returns an array of bytes

Parameters:

in - the source

Returns:

the bytes.

Throws:

DasException - If there is an error getting data from the reader

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

getDataSetImpl

protected DataSet getDataSetImpl(Datum start,
                                 Datum end,
                                 Datum resolution,
                                 ProgressMonitor monitor)
                          throws DasException

Description copied from class: DataSetDescriptor

getDataSetImpl implements the getDataSet for this DataSetDescriptor implementation. The getDataSet call of the abstract DataSetDescriptor uses this routine to satisfy requests and fill its cache. This caching may be disabled via setDefaultCaching. To satisfy the request, a DataSet should be returned with an x tag range that contains start and end, with a resolution finer than that requested.

Specified by:

getDataSetImpl in class DataSetDescriptor

Parameters:

start - beginning of range for the request.

end - end of the range for the request.

resolution - the resolution requirement for the reqeust. null may be used to request the finest resolution available or intrinic resolution.

Throws:

DasException

getDataSetFromStream

protected DataSet getDataSetFromStream(java.io.InputStream in,
                                       Datum start,
                                       Datum end,
                                       ProgressMonitor monitor)
                                throws DasException

Throws:

DasException

isRestrictedAccess

public boolean isRestrictedAccess()

setServerSideReduction

public void setServerSideReduction(boolean x)

isServerSideReduction

public boolean isServerSideReduction()

getDefaultPacketDescriptor

public PacketDescriptor getDefaultPacketDescriptor()