Starting the application after that modifications ended up in an error (“[ERROR] Unable to find ‘<old module name>.gwt.xml’ on your classpath; could be a typo, or maybe you forgot to include a classpath entry for source?”) as the AppEngine tried loading the module by its old name.

Solution: Delete the launch profile for the project (by choosing “Run As…” -> “Run Configurations…” from the context menu).

Obviously the GWT does not check nor update the automatically generated launch profile thus you need to delete it to force the GWT to create a new profile from scratch taking the project changes into account. You might also adjust the profile according to the changes made, but deleting it is the safe and easy way.

After some research, but without success, I realized the *Advanced* section at the bottom of the Access Control tab for each content type. And now the magic trick: Increase the weight and you are done. So I guess the build in access management was fighting the Access Control module, so it is up to you to make your favorite module stronger by giving it more weight. — I doubt this is intuitive. Additionally, it is for sure difficult to simply find the tiny little select box down there in a section, which is by default folded.

First impression: perfect! Open and close branches by clicking (+) or (-) — view page by clicking menu item label. Even the few styling issues could be fixed easily by using CSS. But as soon, as someone clicks a label, the menu collapses to its default status. It does not remember its last status after loading a different page with the same menu.

Is this it? All module have critical downsides like this? I was quite disappointed!

But I taught JQuerymenu to remember!

As it is quite some code, I will not post it here directly, but added it to the tracker page for this “feature request” or you can download the two updated files (jquerymenu.js and jquerymenu.module) here and replace the once in your /sites/all/modules/jquerymenu folder.

But please be careful, it should be considered an alpha version, there are quite some weaknesses (see tracker page). Any feedback or suggestions are very welcome!

As all slides and there appearance are stored in a text file in my case, I started adding cue points with ActionScript. But as soon as the video can be controlled with a slider, allowing to shift for- and backwards, the event handler “cuePoint” was not triggered any more. Thus, the slides where not changed correctly as the user jumps ahead, as the cue points between the previous and the new position did not cause and cue point event.

Finally I wrote AdvCuePointManager, inheriting from CuePointManager, but which can deal with jumping back- and forward.

Copy it to “<your source folder>/net/svenbuschbeck/flex/video” and use it as follows:

<mx:VideoDisplay cuePointManagerClass="net.svenbuschbeck.flex.video.AdvCuePointManager" />

Memchached is a distributed hash map, which can be used for example to speed up any kind of web application, see website for details. In our case, we want to use it as temporary data store. I will report about the experiences in a latter post.

introduction

Always refer to this page for details, but I created a version with less text but including steps to really start from scratch.

All lines starting with # are command lines, i.e. you need to type into a linux shell.
Output of any kind is always surrounded by ” even if it is multiline output.

content

a. get libevent (needed to install memcached)
b. get memcached and verify installation
c. use and test memcached within Java with junit/ant

a. installing libevent 1.3

a.1. check for current version of libevent

a.1a.

Log in as root or get super user rights by calling su

# updatedb
# locate libevent

If there is output including “libevent1″ and/or “libevent-1″ (ignore package files like *.deb) -> a.1b, otherwise a.2

a.1b. removing old libevent version

# apt-get remove –purge libevent1
# Y

# updatedb
# locate libevent
Should now return nothing or package files only, i.e. you are ready for installation

a.2. installing libevent 1.3

a.2a downloading and unpacking

# cd /usr/local/src
# wget http://monkey.org/~provos/libevent-1.3b.tar.gz
# tar zxvf libevent-1.3b.tar.gz
# cd libevent-1.3b

a.2b. configuring

# ./configure
check the output, if it contains something like “configure: error: no acceptable C compiler found in $PATH” -> a.2c. otherwise a.2d.

a.2c. compiling

# apt-get install gcc

Redo a.2b.
I got output like “C compiler cannot create executables”, reading file ‘config.log’ did not help me at all. Googling finally did, as I found a forum entry, pointing out a missing lib.
So try this:

# apt-get install libc-dev

Redo a.2b.
If that did  not solve it… sorry … google on, there is no sense in going on without solving this issue. :-/

a.2d. make it!

# make && make install

If you get something like “-bash: make: command not found” -> A.2e, otherwise A.3.

a.2e.

# apt-get install make

Redo a.2d.

a.3. configuration

Press the Esc key as you read [esc] in the commands below.

# vim /etc/ld.so.conf.d/libevent-i386.conf
# i/usr/local/lib/[esc]:wq
# ldconfig

b. install memchached and verify installation

b.1. download, unpack and install memchached

# cd /usr/local/src
# wget http://danga.com/memcached/dist/memcached-1.2.2.tar.gz
# tar zxvf memcached-1.2.2.tar.gz
# cd memcached-1.2.2
# ./configure
# make && make install

After installing gcc and libc-dev in section a, this one went easily for me – if you skipped section a and run in problems here, please install gcc and libc-dev (see a.2c).

b.2. verify installation of memchached

b.2a. start memchached server

# memcached -u www-data -vv

Output should end with line “<3 server listening”. Perfect!

b.2b test server

I will refer to this shell in front of you as server shell below. Now, open another shell on the same machine, I will refer to it a client shell.

# telnet localhost 11211

You should see something like “<7 new client connection” on the server shell, switch back to client shell.

# set test1 1 10000 1
# a

You should see “STORED” on client shell and the two following lines on server shell
“<7 set test1 1 10000 1
>7 STORED”

Perfect!
You did it, your memcached is up and running

c. memcached and Java

I wrote a little test package using a Java client library for memcached from here, together with junit and ant. You can download it to have a look how simple using memcache is and to verify your installation with an included  junit test, automated with an ant build file.

The upper one represents me and the one below Stefano Bortoli, a friend and colleague of mine. Several dimensions have been used, like color, size, position and line-width. As a next step, besides improving creation speed, patterns and shapes could be introduced and even motion by exchanging the PNG image either with an old-fashioned animated GIF or a Flash animation. Integration is kept as simple as it can be, e.g. by simply inserting <img src=”http://okkam.dit.unitn.it/oidviz/?oid=[put your ID here]“/> into your XHTML page. The PHP script returns a bit stream, as if you would load an existing image directly from a server but instead it is created on-the-fly.

A new portal has been launched for the city of Augsburg. It is meant to be a central platform about all kind of information and events concerning education in and around Augsburg (Germany). Different layouts have been created in the course of a seminar, the one to be realized, has been chosen by a person in charge of the municipality. Two students of the “winning” team and myself, we formed a team, got a work contract by the municipality and implemented the website on the basis of the Typo3 CMS within one year, besides our studies.

» go to see the website »