uk.ac.starlink.astrogrid

Class AcrDataSource

java.lang.Object

uk.ac.starlink.util.DataSource

uk.ac.starlink.astrogrid.AcrDataSource

public class AcrDataSource
extends DataSource

DataSource implementation which reads from MySpace using ACR.

Since:

9 Sep 2005

Author:

Mark Taylor

Field Summary

Fields inherited from class uk.ac.starlink.util.DataSource

DEFAULT_INTRO_LIMIT, MARK_WORKAROUND_PROPERTY

Constructor Summary

Constructors

Constructor and Description
AcrDataSource(AcrConnection connection, String uri) Constructor.

Method Summary

Modifier and Type	Method and Description
long	getLength() Returns the length of the stream returned by getInputStream in bytes, if known.
InputStream	getRawInputStream() Provides a new InputStream for this data source.

Methods inherited from class uk.ac.starlink.util.DataSource

close, forceCompression, getCompression, getHybridInputStream, getInputStream, getInputStream, getIntro, getIntroLimit, getMarkWorkaround, getName, getPosition, getRawLength, getSystemId, getURL, makeDataSource, makeDataSource, makeDataSource, setCompression, setIntroLimit, setMarkWorkaround, setName, setPosition, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

AcrDataSource

public AcrDataSource(AcrConnection connection,
                     String uri)

Constructor.

Parameters:

connection - connection object

uri - ivorn of remote file

Method Detail

getLength

public long getLength()

Description copied from class: DataSource

Returns the length of the stream returned by getInputStream in bytes, if known. A return value of -1 indicates that the length is unknown. The return value of this method may change from -1 to a positive value during the life of this object if it happens to work out how long it is.

Overrides:

getLength in class DataSource

Returns:

the length of the stream in bytes, or -1

getRawInputStream

public InputStream getRawInputStream()
                              throws IOException

Description copied from class: DataSource

Provides a new InputStream for this data source. This method should be implemented by subclasses to provide a new InputStream giving the raw content of the source each time it is called. The general contract of this method is that each time it is called it will return a stream with the same content.

Specified by:

getRawInputStream in class DataSource

Returns:

an InputStream containing the data of this source

Throws:

IOException