Package marauroa.common.io

Class Persistence

java.lang.Object

marauroa.common.io.Persistence

Direct Known Subclasses:

FileSystemPersistence, WebstartPersistence

public abstract class Persistence
extends Object

Allows transparent access to files. Subclasses implement Persistence for normal and webstart environment.

Author:

hendrik

Constructor Summary

Constructors

Constructor	Description
Persistence()

Method Summary

Modifier and Type	Method	Description
static Persistence	get()	Returns the Persistence manager for this environment
abstract InputStream	getInputStream(boolean relativeToHome, String basedir, String filename)	Gets an input stream to this "virtual" file
abstract OutputStream	getOutputStream(boolean relativeToHome, String basedir, String filename)	Gets an output stream to this "virtual" file

Methods inherited from class java.lang.Object

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

Constructor Details

Persistence

public Persistence()

Method Details

get

public static Persistence get()

Returns the Persistence manager for this environment

Returns:

Persistence

getInputStream

public abstract InputStream getInputStream(boolean relativeToHome,
 String basedir,
 String filename)
                                    throws IOException

Gets an input stream to this "virtual" file

Parameters:

relativeToHome - should this file be placed below the users home directory?

basedir - directory prefix which is ignore in webstart environment

filename - filename (without path)

Returns:

InputStream

Throws:

IOException - on IO error

getOutputStream

public abstract OutputStream getOutputStream(boolean relativeToHome,
 String basedir,
 String filename)
                                      throws IOException

Gets an output stream to this "virtual" file

Parameters:

relativeToHome - should this file be placed below the users home directory?

basedir - directory prefix which is ignore in webstart environment

filename - filename (without path)

Returns:

OutputStream

Throws:

IOException - on IO error