groovy articles on del.icio.us

Since I'm using Groovy in the current project (thanks to Dierk and Marc) I'll start collect articles about groovy...

This might help some other beginners to start with a steeper learning curve as well :)Enjoy!

Read more at del.icio.us/TomiSchuetz...

Groovy: Parsing an XML file with Groovy

Groovy comes with a handy XML parser. With this parser you can load an XML file quickly and navigate it easy.

Currently I'm working with WebTest (http://webtest.canoo.com/) for testing functional aspects of an web application.

WebTest comes with a nice overview to present the results of the test runs. The report itself is transformed out of an XML file. For statistics reason, I'm using this XML file to extract specific data. This extraction is done with a little Groovy script.

To get an idea of the WebTest report XML file, have a look a the fragment below:

WebTestReport.xml:

  
      
          
    ...
      
          
              
              
                  
              
              
                  
                  
                  
                                        name="resultFilename" value="response_1156746643278_invoke.html"/>
                  
                  
                      
                  
              
              
                  
                  
                  
                  
                  
                  
                      
                  
              
          
    ...

This file can be parsed with the following code:

import java.text.SimpleDateFormat

FormatUS = new SimpleDateFormat('EEE MMM dd hh:mm:ss z yyyy', Locale.US)
FormatDE = new SimpleDateFormat('dd.MM.yyyy hh:mm:ss', Locale.GERMAN)

def folder = args?.size() ? args[0] : "data"
println "reading files from directory '$folder'"
def basedir = new File(folder)

// result files of the current run
files = basedir.listFiles().grep(~/.*xml$/)

List resultLines() {
List result = []
for (currentFile in files) {
println "  processing $currentFile"
def summary = new XmlParser().parse(currentFile)

 // List with all 'testresult' elements
def testresults = summary.testresult


testresults.each { testcase ->
     def entry  = [:]
entry.name = testcase.'@testspecname'.split(/\W/)[0]
entry.time = testcase.'@starttime'
entry.time = FormatUS.parse(entry.time)
        entry.time = FormatDE.format(entry.time)
entry.ok   = testcase.'@successful'

def rt = testcase.depthFirst().findAll { element ->
if (element.name() != 'parameter') return false
if (element.'@name' != 'taskName')   return false
def roundtripTags = 'clickLink clickButton clickElement'
roundtripTags.tokenize().contains(element.'@value')
}
entry.roundtrips = rt.size()

def fields = testcase.depthFirst().findAll { element ->
if (element.name() != 'parameter') return false
if (element.'@name' != 'taskName')   return false
def fieldsTags = 'selectForm setCheckbox setFileField setInputField setRadioButton'
fieldsTags.tokenize().contains(element.'@value')
}
entry.fields = fields.size()

def verifies = testcase.depthFirst().findAll { element ->
if (element.name() != 'parameter') return false
if (element.'@name' != 'taskName')   return false
def fieldsTags = 'verifyCheckbox verifyCookie verifyDocumentURL verifyElement'
fieldsTags.tokenize().contains(element.'@value')
}
entry.verifies = verifies.size()

if (testcase.results.error) {
entry.resultsError = testcase.results.error.'@exception'[0]
} else {
entry.resultsError = ''
}

     /*
     if (testcase.results.failure) {
entry.resultsFailure = testcase.results.failure.'@message'[0].replaceAll(/\W/, " ")
println "####" + entry.resultsFailure
} else {
entry.resultsFailure = ''
}
     */

def groupSteps = testcase.results.step.findAll { step ->
   step.parameter.any { param ->
       param.'@name' == 'taskName' && param.'@value' == 'group'
   }
}
      
     def goodSteps = groupSteps.findAll{ it.result?.completed }

     // assumed: there is always at least one group step, size() never 0
     if (groupSteps.size() != 0) {
     entry.complete_pct = goodSteps.size() / groupSteps.size()
     } else {
      entry.complete_pct = 0
     }

if (goodSteps) {
     entry.description = goodSteps[-1].parameter.findAll{it.'@name'=='description'}.'@value'[0]
     } else {
      entry.description = ''
     }

result <<>
writer <<
       "Testfall\t"    <<
       "Datum\t"     <<
       "Erfolgreich\t"    <<
       "Prozent\t"     <<
       "Error\t"       <<
       "Server Roundtrips\t" <<
       "Number of Fields\t"  <<
       "Verifications\t"  <<
       "Beschreibung\n"
for (entry in resultLines()) {
writer <<
     entry.name    << "\t" <<
     entry.time    << "\t" <<
     entry.ok    << "\t" <<
     entry.complete_pct << "\t" <<
     entry.resultsError   << "\t" <<
     entry.roundtrips     << "\t" <<
     entry.fields         << "\t" <<
     entry.verifies       << "\t" <<
     entry.description  << "\n"
}
}

Now you get a tab seperated file with the content of your result files from the web testing runs. I
import this file into Excel and create a pivot table to understand the results better.

I hope this helps :)

Groovy: Get all XML files from a directory tree

Currently I'm working in a project, where Groovy (a dynamic scripting language for the JVM) is used. One of the project members is Dierk König, which is a Groovy commiter and the author of Groovy in Action. This gives a real insight in the beauty of Groovy :)

Below you can see a nice solution for finding all XML files in a directory tree:

// pass a directory or use the current directory
def folder = args?.size() ? args[0] : "."
println "reading files from directory '$folder'"
def basedir = new File(folder)

// result files of the current run
files = basedir.listFiles().grep(~/.*xml$/)

List resultLines() {
    List result = []
    for (currentFile in files) { 
        println "  processing $currentFile"                
    }
    return result
}

GWT Widget Library

Google released a new version of GWT today, version 1.1.0. There were some API changes made that broke a few things in the GWT-WL, namely the FormPanel and SVG support. This release is to make the GWT-WL compatible with the latest GWT release. Below are a list of changes...

[from the site]

Read more at gwt-widget.sourceforge....

Eclipse Summit Europe 2006

The Eclipse Summit Europe will take place in Esslingen, Germany from October 11-12, 2006

Read more at www.eclipsecon.org/summ...

Eclipse 3.3 M1 - New and Noteworthy

It's amazing, how fast the Eclipse people work! Thanks to all of them :)

Read more at download.eclipse.org/ec...

Lint4j Maven Plugin - Lint4j

Lint4j comes with a Maven Plugin that simplifies generation of reports significantly.

I'll have to check this plugin with WebTestClipse ...

Read more at www.jutils.com/maven-pl...

dzone.com

An interesting site for developers. It's similar to del.icio.us and stumbleupon , but more focused on developers.

I like these community driven sites, because it allows me to find high quality sites.

Read more at www.dzone.com/

SourceForge.net: WebTestClipse

I added WebTestClipse as a project to Sourceforge.net ( http://sourceforge.net/projects/webtestclipse/ ). The idea is, to use Sourceforge.net as a portal and to redirect to http://webtestclipse.canoo.com/ where the project is hosted and developed...

Read more at sourceforge.net/project...

Setting up the master Maven 2 project for WebTestClipse - Install Maven 2

I'm setting up the master Maven 2 project for WebTestClipse . You can follow these steps to set up any kind of project.In this post I'll descripe the installation of Maven 2, based on links and some minor notes. It's not to be considered to be a complete installation guide.

1.) Download Maven 2

Download Maven 2 from http://maven.apache.org/download.html and chose the right distribution. I'm using http://www.apache.org/dyn/closer.cgi/maven/binaries/maven-2.0.4-bin.zip .

2.) Unpack Maven into a local directory

I've chosen C:\dev\maven-2.0.4 as my Maven 2 home directory.

3.) Environment Variable

Define a %MAVEN_HOME% variable and extend the %PATH% variable. This will make it possible to call Maven 2 commands from the command line

4.) Test your Installation

Testing the installation is fairly simple. Just call a Maven 2 command from the command shell:

mvn -v

As a result you should see:

Maven version: 2.0.4

Joined WebTestClipse

I joined the WebTestClipse project. The goal of the project is to provide a set of Eclipse features and plugins to develop tests for WebTest .

Read more at webtestclipse.canoo.com...

Daily IT Thoughts...

I'll start making daily notes about my work, this shall be a collection of impressions but also of small code fragments which help me on my daily projects...

Eclipse and Java on USB Memory Stick

I bought myself a memory stick a few days ago, mainly to store data which I download in a internet coffee shops. I find it quite annoying to transport my laptop every time I just would like to read some mails...

Somehow I found portableapps.com which has a nice collection of tools (Firefox, Thunderbird, etc.) which can be copied on the USB memory stick and started from there. This makes it easy to use my favorite browser and mail client...

For me the next question was: can I install Eclipse and Java on the memory stick and use it? Yes, you can :)

Here a short description on what I did:

1.) Copy a current installation of Java to the memory stick. I really copied it, I didn't install it!
2.) Copy Eclipse on the memory stick.
3.) Write a simple batch file to start Eclipse.

that's it!

My directory structure on the memory stick looks like this:

%USB_MEMORY_STICK_ROOT%
| Eclipse.bat
+---Applications
+---jdk1.5.0_05
| \---bin
| \---javaw.exe
|
+---eclipse
\---eclipse.exe

Eclipse.bat looks like this:

.\Applications\eclipse\eclipse.exe
-data .\Projects
-vm .\Applications\jdk1.5.0_05\bin\javaw.exe
-vmargs -Xmx256M


Enjoy :)

Maven 2 - How To: Where to put the properties?

1) The properties, in Maven 1 in build.properties and project.properties, are stored in settings.xml

2) Create the settings.xml in your user directory

Under Windows XP, this is:

C:\Documents and Settings\<user>\.m2\settings.xml

If you have to configure a proxy, it would look like this:

<?xml version="1.0" encoding="UTF-8"?>
<settings>
<proxies>
<proxy>
<active/>
<protocol>http</protocol>
<username>user</username>
<password>passwd</password>
<port>8080</port>
<host>proxy-url</host>
<id/>
</proxy>
</proxies>
</settings>

3) Since settings.xml is not part of your workspace and won't be stored in the project repository, you don't have it within your development environment. I'm using Eclipse for my development and I included the settings.xml in my project as a linked resource to the file system.

This approach gives you the advantage, that you can edit settings.xml easily within Eclipse and you don't have to leave your development environment :)

* * *

Reference:

http://maven.apache.org/maven-settings/settings.html

Maven 2 - How To: Multiple Module (flat project layout)

1) Create at least two Maven projects in a flat project layout...

%PROJECT_WORKSPACE%\%YOUR_PROJECT_MASTER%pom.xml
...

%PROJECT_WORKSPACE%\%YOUR_PROJECT_SLAVE%pom.xml
...

2) Define the <groupId> and <artifactId> of the modules...

%PROJECT_WORKSPACE%\%YOUR_PROJECT_MASTER%\pom.xml:

<project>
...
<groupId>somegroup.master</groupId>
<artifactId>master</artifactId>
...
</project>

%PROJECT_WORKSPACE%\%YOUR_PROJECT_SLAVE%\pom.xml:

<project>
...
<groupId>somegroup.slave</groupId>
<artifactId>slave</artifactId>
...
</project>

3) Define the modules in the master project...

Here I added first the artifactId, but it didn't work. I changed it to the directory and everything was fine.

%PROJECT_WORKSPACE%\%YOUR_PROJECT_MASTER%\pom.xml:

<project>
...
<modules>
<module>../%YOUR_PROJECT_SLAVE%</module>
</modules>
...
</project>

4) Add the <parent> and <dependency> element in the slave module...

%PROJECT_WORKSPACE%\%YOUR_PROJECT_SLAVE%\pom.xml:

<project>
...
<parent>
<groupId>somegroup.master</groupId>
<artifactId>master</artifactId>
<version>1.0-SNAPSHOT</version>
</parent>
...
<dependencies>
<dependency>
<groupId>somegroup.master</groupId>
<artifactId>master</artifactId>
<version>1.0-SNAPSHOT</version>
</dependency>
...
</dependencies>
...
</project>

5) Call mvn install...

First the master project will be called and than slaven... That's it :)

* * *

References:

- http://maven.apache.org/
- http://maven.apache.org/guides/introduction/introduction-to-dependency-mechanism.html
- http://maven.apache.org/guides/mini/guide-ide-eclipse.html

Maven 2 - How To: Add LICENSE.txt

1) Add LICENSE.txt to the root directory of your project...

%YOUR_PROJECT% pom.xml
LICENSE.txt
src site ...

2) Copy your license into LICENSE.txt

3) Include the <licenses> element in the pom.xml...

%YOUR_PROJECT%\pom.xml:

<project>
...
<licenses>
<license>
<name>The Apache Software License, Version 2.0</name>
<url>LICENSE.txt</url>
</license>
</licenses>
</project>

4) Inculde project ${reports} in site.xml

%YOUR_PROJECT%\src\site\site.xml:

<project>
...
${reports}
</body>
</project>

Maven 2 - Collection of How-To's

I'm currently migrating two projects to Maven 2 (http://maven.apache.org/) and decided that I'll document this within my blog.

Although the Maven documentation has grown a lot, I'm still having difficulties to find the right piece of documentation to get my things done. Often I have to check the Maven repository to see how the Maven guys did it. By the way - I think this is a great advantage of open source ;) I hope and I'm quite sure, that this will improve a lot within the next few weeks and months.

Since I forget very fast ;) (very-very short time memory), I'll write down a collection of How-To's, where I describe little tasks. Maybe this will be helpful for other people too...

Working Offline

Currently I'm spending many hours working offline and this wasn't very easy when I started doing it. I was used to have internet access 24x7. Since I'm in Thailand (see http://tomionthai.blogspot.com/) now and I don't have an internet access at the place I'm staying, I had to find a new way of working.

My first approach was saving the websites with Firefox (http://www.mozilla.org/) for offline reading and Google Desktop Search (http://desktop.google.com/) for indexing all the pages. After a while I switched from Firefox to HTTrack (http://www.httrack.com/) for downloading the pages, since it allows the download of a complete website with all the links and referenced pages. This approach was ok, but had its disadvantages like:

1) I had to come up with my own directory structure to save all the websites.
2) Using Firefox wasn't very comfortable since it tries to save the file with the URL file name. This is very unpleasant if you have a site providing dynamic content and it's using post - every URL looks exactly the same and you will have to rename each file you would like to save locally.
3) Some websites can't be downloaded with HTTrack (or at least I didn't find the right configuration). I spent hours to find the right configuration for downloading Maven (http://maven.apache.org/), but I wasn't very successful.
4) It took quite some time to start and configure HTTrack everytime I wanted to have a certain page for offline reading.
5) Often I downloaded much more than I wanted with HTTrack, which resultat in very long download times and waste of diskspace.

But the biggest drawback was, that this approach saved a lot of garbage on my laptop, which I dind't wanted. Most of the pages show headers, footers, menus and a lot of advertisement. By using Firefox or HTTrack all of this was downloaded as well and resultet in bad search results in Google Desktop Search, this because menus referenced to other pages with the actual content and this menu links contained my search key words, of course Google Desktop Search listed them too.

Finally I found a much nicer and even easier approach. My dream team is called PDFCreater (http://pdfcreator.sourceforge.net/, http:www.pdfcreator.de.vu/) and Google Desktop Search. Everytime I see a page, an article or some content I would like to read offline, I print it with PDFCreator and save the pdf file on my disk. First of all, many pages offer a printer-friendly version of the content which results in a nice print and in this case in a nice pdf file. I don't have to create complex directory structures anymore, I just created a simple structure with meta descriptions and I save all the pages/pdfs in these directories. Google Desktop Search has no problem indexing the pdf files and it's also nicer to read them in Acrobat Reader (http://www.adobe.com/) than in Firefox. The final advantage for me is, that I can easily backup all the files and I use them as my knowledgebase.

If you have to work a lot offline, but you still would like to read current articles from the internet, you might want to try this approach. If you have a better approach, I'm very interested in knowing it... thanks in advance :)

Java XML Binding

I'm working right now on CreateTree, a simple tool for reading and
creating directory and file structures, CreateTree is a part of the BDT
project (http://bdt.sf.net/).

The model is defined in a XML Schema and finally transformed with Apache
XML Beans into a Java model.

Before I decided to use Apache XML Beans, I had a look at
https://bindmark.dev.java.net/, a project which compares Java XML
Binding tools.

Since I don't have much experience with bind tools, Bindmark is very
helpful and provides a lot of information.

New Eclipse help plugin for eclipse-tutorial.dev.java.net available

New Eclipse help plugin for the tutorials at eclipse-tutorial.dev.java.net available

I developed a new Eclipse help plugin, containing all the tutorials from eclipse-tutorial.dev.java.net. With the new plugin, you can select the tutorials you would like to see and you don't have to download all of it at once.

This will help us to deliver new tutorials easier for the help plugin.

You can find the Eclipse help plugin under:

• https://eclipse-tutorial.dev.java.net/update

Enjoy :)

New visual tutorials available

I added four new tutorials to eclipse-tutorial.dev.java.net. The new tutorials are based on Eclipse 3.1.x and show some of the new features.

- Ant Code Templates
- Generating Ant Buildfile for Eclipse Java project
- Create a new Perspective
- How to use the Help System

https://eclipse-tutorial.dev.java.net/

Enjoy!

Great Ranking for eclipse-tutorial.dev.java.net

Today I had a look at http://community.java.net/projects/top.csp to see, what rank the eclipse-tutorial.dev.java.net project has and I was completely surprised!
Correct me if I'm wrong, but it looks to me, that the other 9 projects in the list have a very close relation to java.sun.com. If this is right, I think the 3rd rank is simply great :)

Joomla Developer

The Joomla community has a new development space provided by Sourceforge:

• http://developer.joomla.org/

It's amazing to see, what momentum is behind some people :) I wish them all the best in developing Joomla and increasing the community!

New Eclipse Plugin for Eclipse Tutorial

I have published a new Eclipse plugin for eclipse-tutorial.dev.java.net.

Update site: eclipse-tutorial.dev.java.net/update

Enjoy!

EclipseZone

New Eclipse Website available

http://www.eclipsezone.com/

Have fun!

Inversion of Control

Inversion of Control is a key part of what makes a framework different to a library. A library is essentially a set of functions that you can call, these days usually organized into classes. Each call does some work and returns control to the client.

A framework embodies some abstract design, with more behavior built in. In order to use it you need to insert your behavior into various places in the framework either by subclassing or by plugging in your own classes. The framework's code then calls your code at these points.

Martin Fowler - http://martinfowler.com/bliki/InversionOfControl.html

How To Remove An Obsolet Workspace From Eclipse 3.1

Sometimes you would like to remove an obsolet workspace from Eclipse. Suppose you have made a test workspace to try some things out and now you don't wont and don't need it anymore.

If you remove the workspace from your disk, it'll still appear in the workspace launcher, when you start up Eclipse.

So, how do you get rid of it?

Ecplise is storing the workspace information in a preferences file called "org.eclipse.ui.ide.prefs". This file is located under "%ECLIPSE_HOME%\configuration\.settings" and contains a key named "RECENT_WORKSPACES". The value of this key contains a comma seperated list of workspaces, more precisely the path to the workspaces. If you delete one of the entries, it'll disappear from the workspace launcher.

What you have to do is the following:

• exit Eclipse
• delete the workspace from your disk
• delete the path pointing to your obsolet workspace in the mentioned preferences file
• start Eclipse

You shouldn't see the workspace anymore in your workspace launcher :-)

German translation of eclipse-tutorial.dev.java.net

The first german translation of eclipse-tutorial.dev.java.net is done. I figured out, that it's not that easy to translate tutorials :-)

Open Source Java Applikationen entwickeln mit java.net und Eclipse

• Teil 1- Neues Projekt in Eclipse erstellen

Let me know, if there are some terrible translation mistakes!

Enjoy! :-)

When Maven encounters Eclipse

When Maven encounters Eclipse.

Subversion 1.2.0

Version 1.2.0 released. See Subversion