alma.acs.util

Class AcsCWD

java.lang.Object

alma.acs.util.AcsCWD

public class AcsCWD
extends java.lang.Object

Class that gives access to the current working directory, effectively encapsulating the "user.dir" property. This feature was requested in Feb. 2005 by Lindsey, Brian, et.al.

Note that using files goes very much against ALMA's idea of location transparency of component locations, and against having a central archive to store data. This class should only be used in exceptional situations, such as for offline data reduction, or for other inevitable temporary file storage, where a component creates and deletes the files within its life cycle. Files should almost never be used for inter-component communication!

Note that on a diskless machine, the file created may well be located on a RAM disk and does not survive machine rebooting.

Since:

ACS 5.0

Author:

hsommer

Constructor Summary

Constructors

Constructor and Description
AcsCWD()

Method Summary

Modifier and Type	Method and Description
static java.io.File	createTempFileInCWD(java.lang.String prefix, java.lang.String suffix) Creates a temp file in the current working dir.
static java.io.File	getCWD() Gets the current working directory.
static void	setCWD(java.lang.String cwd) Sets the current working directory.

Methods inherited from class java.lang.Object

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

Constructor Detail

AcsCWD

public AcsCWD()

Method Detail

getCWD

public static java.io.File getCWD()

Gets the current working directory.

Returns:

File object which represents the directory.

setCWD

public static void setCWD(java.lang.String cwd)

Sets the current working directory.

Parameters:

cwd -

createTempFileInCWD

public static java.io.File createTempFileInCWD(java.lang.String prefix,
                                               java.lang.String suffix)
                                        throws java.io.IOException

Creates a temp file in the current working dir.

Parameters:

prefix - The prefix string to be used in generating the file's name; must be at least three characters long

suffix - The suffix string to be used in generating the file's name; may be null, in which case the suffix ".tmp" will be used

Returns:

a newly created file.

Throws:

java.io.IOException

See Also:

File.createTempFile(java.lang.String, java.lang.String, java.io.File)