µjax (microjax or ujax) is a client sided javascript persistence layer that leverages the symbiosis of a (JCR compliant) Content Repository and the agilepatterns of browser based ajax development, to form a completely new wayof developing applications.
microjax is a part of Apache Sling which is currently in incubation.
As an important differentiator to other Ajax frameworks µjax focuses onadding an attractive server-sided persistence and does not focuson providing a rich application framework with components, widgets or visual effects.µjax can be combined with any Ajax framework of your choosing.
µjax uses XHR & JSON based AJAX techniques to retrieve contentand uses regular form input to write content.
Download, Register & Install
Prerequisites
Knowledge of Javascript and HTML are required.
An understanding of JCR is certainlyvery helpful to quickly start developing in µjax.
Download
The µjax pre-release can be downloaded attached (below) to this post pre-packed with the attached CRX builds.(Windows, Unix, Linux & macosx)
Keep in mind:
Nightly builds are intended to provide CRX Developers with the latestenhancements and bug fixes. A NIGHTLY BUILD IS NOT AN OFFICIAL RELEASEAND IT IS NOT TESTED BY QA. USE IT AT YOUR OWN RISK. IT IS RECOMMENDEDNOT TO USE A NIGHTLY BUILD ON A PRODUCTION SYSTEM, BUT TO USE IT FORDEVELOPMENT PURPOSES ONLY. DAY MANAGEMENT AG CANNOT BE HELD RESPONSIBLEFOR ANY DAMAGE THAT COULD BE CAUSED BY A NIGHTLY BUILD.
Register
To be able to install CRX you will have to get an evaluation license, which can beobtained by filling out the following form.
Install
µjax is only installed in the default installation of CRX, so pleaseselect that option in your downloaded CRX installer.
The installation is very straight forward and does not have dependencies beyonda JDK 1.4 or greater.
Mount your workspace
To be able to interact with the content repository for development purposesit is recommended to use webdav and connect to
http://localhost:7402/crx/repository/crx.default
On Windows use "My Network Places" / "Add new network place"
On macosx use "Go" / "Connect to Server" in Finder
Look around
Explore you content repository athttp://localhost:7402/crx, as soon as you start developing your applications you will find both your code and also the content your applicationscreate in the "Content Explorer".
First Steps
To get started please either use the test application below orjust extract the "firststeps.zip" (below) and drag and drop the "apps" folder into root folder of your webdav mount.
Test application:
Put the source code below into a test.html file and drag this into your mounted webdav drive:
<html><head><title>Hello World</title><script src="/ujax/ujax.js"></script></head><body><script>var welcomeNode=ujax.getContent("/content/welcome");</script><h1>Welcome String:<script>if(welcomeNode)
{ document.write(welcomeNode.hello); }
</script></h1><form action="/content/welcome" method="POST"><input name="hello" value="" /><input type="submit"></form><script>ujax.wizard();</script></body></html>
and hit http://localhost:7402/test.html
in your browser.
µjax Version of "Stefano's Linotype"
To get a feeling of a more real-life application feel free to downloadan µjax-ed version of Stefano's Linotypeyou can simply extract the "linotype.zip" (attached below)into the /apps folder of your webdav drive pointing at http://localhost:7402/
After the installation hit http://localhost:7402/content/linotype/posts/*.post.htmland hit the save button to create your first blogentry. After creating the post you can surf to http://localhost:7402/content/linotype.html
Please keep in mind that this is really just prototype to explain the µjaxbasic concepts and how they could be applied to existing web applicationswithout a lot of effort.
[1] http://incubator.apache.org/sling/site/project-information.html#ProjectInformation-lists
[2] http://tech.groups.yahoo.com/group/jcr-crx/
thanks for bringing that to our attention.
...using all these Apples actually led to issue that a broken installer was uploaded for windows and nobody noticed.
Sorry for that, we will fix that as soon as possible and keep you posted.
(.ps: the unix installer works ;)
after looking a little bit more detailed
into the issue I found out that the above microjax install requires JDK 1.5.
After installing 1.5 you can change the JVM by going to "Start / All Programs / Day CRX 1.3.2 / Start CRX 1.3.2" and double-click "CRX 1.3.2" and change the "Java VM" param to the javaw.exe in your JDK installation directory of 1.5
Sorry for the inconvenience.
regards,
david
and when i hit http://localhost:7402/
i have an http 404 error message
any idea?
after investigate
if i use the JDK 1.5., i can access http://localhost:7402/test.html
but i cannot access http://localhost:7402/crx
if i use JDK 1.4 from the installation of the crx i can access to http://localhost:7402/crx but cannot access to http://localhost:7402/test.html
is there any solution to test it ?
solutions?
Rene' Robinson (you know where to find me...)