The iiuf Java PackagePart II

Simon Schubiger and Oliver Hitz

DIUF, University of Fribourg

CVS

XML

Imaging

Utilities

Outline

Introduction CVS: Concurrent Versions System XML/DOM Java Imaging Utilities Conclusion

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Introduction

Goal: Share common source with minimal overhead through CVS.

21.02.2001: 1413 Classes 906 Source files 127141 lines of code

CVS

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Concurrent Versions System

Same source code, multiple developers Source code history management

No more manual versioning (file1, file2, file3...) Who made a given change? When? Why? What

other changes at the same time? Different development branches Remote access

Low bandwidth

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CVS Overview

One central file repository Every developer works on a local copy of the

files By default, no locking of files (contrary to RCS) Conflicts are resolved manually

Website: http://www.cvshome.org

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Repository Structure

/home/iiufdev/cvsroot java

iiufeduorg

rtsp grabx

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Unix Setup

Become a member of the group "iiufdev" (for file access privileges)

Setup CVSROOT: setenv CVSROOT

:pserver:<user>@iiuf00:/home/iiufdev/cvsroot Login to CVS:

cvs login Get a local copy of a project:

cvs checkout <directory>

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Common Tasks

Bring the local copy up to date: cvs update [filename(s)]

Add a file to the repository: cvs add <filename>

Commit changes: cvs commit [filename(s)]

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Common Tasks

View revision history of a file: cvs log [filename(s)]

View changes made to the local version: cvs diff [filename(s)]

Get an older version: cvs update -r <revision> [filename(s)]

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Conflicts

Problem: two developers change the same file at the same time

Conflicts occur at "commit" time Different portion in the source code:

changes are merged automatically Same portion:

user is asked to resolve the conflict manually, corresponding source code region is marked

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Other Clients

jCVS - Java CVS Client (http://www.jcvs.org)

CVS

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Other Clients

MacCVS & WinCVS (http://www.cvsgui.org)

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XML & DOM

DOM: object representation of XML data

wrapper for different XML parsers

iiuf.dom.DOMUtils provides access to elements within a DOM

structure

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Imaging

JAI: Java Advanced Imaging 100+ different image processing operations,

some native implementations add, subtract, composite... rotate, scale, warp... load/save on TIFF, GIF, JPEG... complex images, (I)FFT... extreme, histogram, mean... convolve, edge extract...

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Imaging

iiuf.jai provides extensions and utilities for JAI: DisplayImagePanel ImageViewer sample application

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Document Imaging

Document analysis operators for JAI: RLSA Connected components analysis Projection profiles

iiuf.das.ocr: Ready to use Java interface to the ScanWorX OCR program

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iiuf.log.Log

Replacement for System.out.println()-style debugging

Single debugging console for distributed applications

Output sent using the Syslog protocol to a standalone application on a specific machine

Also handles exceptions

CVS

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iiuf.log.Log

Servers List Overview

CVS

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iiuf.net.winnetou

Simple web server Extensible through plugins

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Conclusion

Use it and contribute!

Documentation: http://www-iiuf.unifr.ch/iiufdev/doc

3rd-party libraries: /home/iiufdev/distr