de.lmu.ifi.dbs.elki.result.textwriter

Class MultipleFilesOutput

java.lang.Object

de.lmu.ifi.dbs.elki.result.textwriter.MultipleFilesOutput

All Implemented Interfaces:

StreamFactory

public class MultipleFilesOutput
extends Object
implements StreamFactory

Manage output to multiple files.

Field Summary

Fields

Modifier and Type	Field and Description
private File	basename Base file name.
private PrintStream	defaultStream Default stream to write to when no name is supplied.
private static String	EXTENSION File name extension.
private static String	GZIP_EXTENSION GZip extra file extension
private static Logging	logger Logger for debugging.
private HashMap<String,PrintStream>	map HashMap of open print streams.
private boolean	usegzip Control gzip compression of output.

Constructor Summary

Constructors

Constructor and Description
MultipleFilesOutput(File base) Constructor
MultipleFilesOutput(File base, boolean gzip) Constructor

Method Summary

Methods

Modifier and Type	Method and Description
void	closeAllStreams() Close (and forget) all output streams.
private PrintStream	getDefaultStream() Retrieve/open the default output stream.
protected boolean	isGzipCompression() Get GZIP compression flag.
private PrintStream	newStream(String name) Open a new stream of the given name
PrintStream	openStream(String filename) Retrieve the output stream for the given file name.
protected void	setGzipCompression(boolean usegzip) Set GZIP compression flag.

Methods inherited from class java.lang.Object

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

Field Detail

EXTENSION

private static final String EXTENSION

File name extension.

See Also:

Constant Field Values

GZIP_EXTENSION

private static final String GZIP_EXTENSION

GZip extra file extension

See Also:

Constant Field Values

defaultStream

private PrintStream defaultStream

Default stream to write to when no name is supplied.

basename

private File basename

Base file name.

map

private HashMap<String,PrintStream> map

HashMap of open print streams.

usegzip

private boolean usegzip

Control gzip compression of output.

logger

private static final Logging logger

Logger for debugging.

Constructor Detail

MultipleFilesOutput

public MultipleFilesOutput(File base)

Constructor

Parameters:

base - Base file name (folder name)

MultipleFilesOutput

public MultipleFilesOutput(File base,
                   boolean gzip)

Constructor

Parameters:

base - Base file name (folder name)

gzip - Use gzip compression.

Method Detail

getDefaultStream

private PrintStream getDefaultStream()
                              throws IOException

Retrieve/open the default output stream.

Returns:

default output stream

Throws:

IOException

newStream

private PrintStream newStream(String name)
                       throws IOException

Open a new stream of the given name

Parameters:

name - file name (which will be appended to the base name)

Returns:

stream object for the given name

Throws:

IOException

openStream

public PrintStream openStream(String filename)
                       throws IOException

Retrieve the output stream for the given file name.

Specified by:

openStream in interface StreamFactory

Parameters:

filename - Output label.

Returns:

stream object for the given label

Throws:

IOException - on IO error

isGzipCompression

protected boolean isGzipCompression()

Get GZIP compression flag.

Returns:

if GZIP compression is enabled

setGzipCompression

protected void setGzipCompression(boolean usegzip)

Set GZIP compression flag.

Parameters:

usegzip - use GZIP compression

closeAllStreams

public void closeAllStreams()

Close (and forget) all output streams.

Specified by:

closeAllStreams in interface StreamFactory