uk.ac.starlink.util

Class ByteArrayDataSource

java.lang.Object

uk.ac.starlink.util.DataSource

uk.ac.starlink.util.ByteArrayDataSource

public class ByteArrayDataSource
extends DataSource

DataSource implementation that uses an internal byte buffer to store the data.

Since:

1 Feb 2007

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
ByteArrayDataSource(String name, byte[] buffer) Constructor.

Method Summary

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

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

close, forceCompression, getCompression, getHybridInputStream, getInputStream, getInputStream, getIntro, getIntroLimit, getLength, getMarkWorkaround, getPosition, 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

ByteArrayDataSource

public ByteArrayDataSource(String name,
                           byte[] buffer)

Constructor.

Parameters:

name - data source name

buffer - containing byte content of the source

Method Detail

getName

public String getName()

Description copied from class: DataSource

Returns a name for this source. This name is mainly intended as a label identifying the source for use in informational messages; it is not in general intended to be used to provide an absolute reference to the source. Thus, for instance, if the source references a file, its name might be a relative pathname or simple filename, rather than its absolute pathname. To identify the source absolutely, the DataSource.getURL() method (or some suitable class-specific method) should be used. If this source has a position, it should probably form part of this name.

Overrides:

getName in class DataSource

Returns:

a name

getRawInputStream

public InputStream getRawInputStream()

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

getRawLength

public long getRawLength()

Description copied from class: DataSource

Returns the length in bytes of the stream returned by getRawInputStream, if known. If the length is not known then -1 should be returned. The implementation of this method in DataSource returns -1; subclasses should override it if they can determine their length.

Overrides:

getRawLength in class DataSource

Returns:

the length of the raw input stream, or -1